Manual Tenaris z5h3w
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Running Manual
Index
5
7
10
Equipment Preparation Slips and Elevators Safety Clamps Strap Wrenches Single t Compensator Stabbing Guides Handling and Lifting Plugs Power Tongs
Pre-Running Operations Drifting Pipe Length Measurement Cleaning Visual Inspection of Threads Before Make-up Field Repair Field Repair on Coated Pipes Field Repair on Fiber Glass Lining Pipes Installation of Seal-Rings Pipes Lifting From Rack to Rig Floor
Running Operations on the Rig Floor Thread Compound Application Recommended Thread Running Compounds Thread Lock Application Stabbing Thread Engagement Connection Make-up Make-up Speed
13
Running Pipes With Automated Rigs Make-up Torque Curve Pattern
14
Make-up Acceptance Criteria
15
Make-up Rejection Criteria
18
Visual Inspection After Make-up Tubular Rig Returns
19
Connection Break-out Inspection Re-Running
20
Running and Pulling Recommendations
21
Specific Guidelines Tenaris BlueTM Tenaris MSTM, MS28TM, Tenaris ERTM and Tenaris PJDTM Special Care for Connections with Seal Ring Special Care for Connections with Fiber Glass Lining (FGL) Special Care for Connections with Corrosion Barrier (CB) Torque vs. Turns Monitoring System Tenaris 3SBTM, Tenaris HWTM, and Tenaris ELTM Sec Delta Torque Definition
This manual details the recommended practices to aid in the successful running and pulling of the Tenaris family of connections. It has been designed to provide an insight to avoid the most common causes of pipe and connection damages resulting from improper planning, incorrect rig operations, or inappropriate material handling procedures. The following sections detail the specific practices to be performed in each operation. This is a general manual that must be used together with the specific guidelines of the connection to be run.
Equipment Preparation All accessory and backup equipment, such as cross-overs, safety subs, float equipment and packer assemblies, should be inspected to ensure they are in proper condition. Since accessories are obtained from several sources, care should be taken to ensure they were threaded with the correct connection. Only accessories threaded by Tenaris or one of their licensed repair shop facilities should be used.
during the running of the first tubing and casing connections and during the pulling out of the last tubing and casing connection. Its condition should be inspected and worn parts replaced at the beginning of each operation.
Slips and Elevators
When making up corrosion resistant alloys (CRA) pipes, strap wrenches should be used after stabbing to make the pin up to the hand tight position or at minimum until a secure thread start has been achieved. All straps should be checked prior to start-up to ensure their proper diameter capability and their cleanness. Once straps become soiled and begin slipping, they should be replaced.
Either slip or collar type elevators may be used for casing and tubing strings. The inserts of the slips and slip type elevators must be clean and sharp. Extra long slips and slip type elevators shall be used on long and/or heavy strings. lf collar-type elevators are used, the bearing surface shall be carefully inspected to ensure a smooth flat bearing perpendicular to the pulling direction. An uneven bearing surface can damage the coupling and lead to a premature connection failure. Spider and elevator slips shall be examined to see that all the surfaces the pipe evenly. Uneven can dent the pipe or cause excess slip-cutting. The use of high-density inserts is recommended for critical service materials.
Safety Clamps The safety clamp is used to suspend the column in case of insufficient grip by the elevator. The safety clamp must be used
Strap Wrenches
Single t Compensator A single t compensator is recommended to be used during running and pulling of heavy wall casing and any CRA tubulars to reduce the compression loads on the threads that are normally incurred during the stabbing, make-up and pull out process. Care must be taken to properly adjust the tension value of this component prior to the first t being stabbed. This will minimize cross-thread damages and galling during the make-up and break out process.
Running Manual
5
Power tong torque 90º
90º
Load Cell
Close as practical
Short as practical
Power Tong - upper view
Stabbing Guides
Load Cell Installation - side view
operations, as well as in case of heavy impact in the lifting plug throughout the operation, the lifting plug must be inspected visually and replaced in case of damage.
Stabbing guides shall be used to guide the pin into the box and minimize damage to the connection if the t is misstabbed. The stabbing guide must be checked prior to running to ensure proper fit and condition of the elastomeric inserts.
Power Tongs
Handling and Lifting Plugs
The tongs should be in good condition, with jaws that correctly fit the pipe.
Handling plugs are not designed to more than a single stand of pipe. Handling plug threads must be cared for and maintained. Threads should be cleaned, inspected and handled so as to prevent damage. To ensure proper thread engagement, both the handling plug and the pipe box threads should be free of any dirt, paint, and storage compound. Plugs should be doped and fully made-up by hand, then tightened by pushing it with a bar. Handling plugs also provide protection of the box threads from damage by tools or test equipment, which may be run inside the pipe. Lifting plugs are designed to the entire weight of the string. The lifting plugs must be doped and fully made-up and power tight to shoulder to achieve full rated lift capacity. Proper handling practices and sound judgement must be used at all times to maintain the rated lift capacity of the plug. Damaged lifting plugs should not be used. At the beginning of each
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Running Manual
It is recommended to use tongs with back-up. Tongs shall be equipped with a rotation speed control and should de capable of operating at a minimum of 3 rpm. It is imperative that the makeup torque is accurately measured and controlled. Torque measuring equipment should be in good working order, cover the appropriate range, and a recent calibration certificate should be demanded from the power tong contractor prior to starting the job. When using tongs with built-in back-up, free motion should be possible between tong and back-up to ensure there is sufficient travel in the back-up to absorb the make-up loss and there is sufficient flexibility in the tong/back-up to compensate for a slight bend and the normal eccentricity between pin and box. If a snub line is used, it should be set at a 90-degree angle to the arm of the tong.
Pre-running Operations Drifting It is requested that each length of the tubulars (casing, tubing, accessories) be drifted for its entire length just before running. Before drifting, make sure that the internal surface is clean and free from foreign matter that can prevent the correct running of the drift and can be mixed with make-up compound during assembly. If compressed air is available, apply the air jet from box to pin.
API STANDARD DRIFT MANDREL SIZE (MIN.) PRODUCTS & SIZES (Ø”) Casing and Liners Smaller than 9 5/8” 9 5/8” to 13 3/8” Larger than 13 3/8” Tubing 27/8” and smaller 3 1/2” and larger
LENGTH
DIAMETER
in.
mm.
in.
mm.
6 12 12
152 305 305
d - 1/8 d - 5/32 d - 3/16
d - 3.18 d - 3.97 d - 4.76
42 42
1,067 1,067
d - 3/32 d - 1/8
d - 2.38 d - 3.18
d= Nominal pipe body internal diameter
The drift shall be handled with care when inserted and when extracted from the pipe, and drifting should be preferably performed from the box side to the pin side to avoid damage on threads, seals and shoulders. It is recommended to perform drifting while the pipe is on the rack. Tubulars that do not the drift mandrel shall be marked with a reject paint band, and laid aside for further investigation.
For CRA and coated material, it is recommended to use nonmetallic drift or a drift coated with plastic or with Teflon. Make sure that the drift mandrel OD conforms to the API 5CT specifications or to the customer´s special drift purchase specification. When specified by the purchaser, casing can be "Special Drifted". Sizes are shown in API RP 5A5 "Recommended Practice for Thread Inspection of new Casing, Tubing and Plain End Drill Pipe", or special drift purchase specifications.
Running Manual
7
Pipe Length Measurement The length of each piece of casing and tubing should be measured prior to running. A calibrated steel tape should be used. The measurement should be made from the outermost face of the coupling or box to the outermost face of the pin nose.
If running is to be delayed, an application of some corrosion protection over the threads should be considered. If the connection is cleaned until twelve hours before the t is run, a light oil should be applied by means of a brush or a spray applicator. If it will be more than twelve hours until a t is to be run, some storage compound and clean thread protectors should be re-applied.
The Effective Length (EL) of each t is the Total Length (TL) minus the Make-up loss (ML).
Care must be taken to ensure that the cleaning process does not cause environmental pollution.
Cleaning
Visual Inspection of Threads Before Make-up
It is essential that no hard foreign matter is present on the threads or seals during make-up. Cleaning should be performed just before running in the hole and after drift test, especially in corrosive atmosphere.
Before the make-up on the rig floor, all threads will be submitted to visual inspection.
Remove threads protectors from pin and box ends.
Pipe should be on a rack allowing enough space for 360° revolution for inspection to assure that each connection is:
Clean all thread or storage compounds with any suitable cleaning process, such as non-metallic bristle brushes and hot water or a quick-drying solvent-type cleaner (without chlorine). Do not use diesel or "oily solvent". Use of compressed air is advisable to dry pin and box.
• • • • •
Check and clean inside the tubulars to eliminate any foreign material that may fall into the box while stabbing. If compressed air is available, apply the air jet from box to pin.
Minor anomalies on thread and torque shoulder surfaces can be field repaired. Damage on seal surfaces, other than mild oxidation, is cause for rejection (see Field Repair). After repairing, threads must be re-cleaned and dried.
The most desirable approach would be to clean the connection at a temperature above 10°C (50°F) so as to remove all traces of moisture and/or extraneous matter. Clean and dry thread protectors.
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Running Manual
Well cleaned Free from rust due to a long and/or incorrect storage Free from handling damages Free from longitudinal cuts and scratches in the seal area Free from burrs or wear
Exposed seal surfaces, such as pin nose areas, are particularly susceptible to handling damage. Special care should be taken in inspection of these areas for dings, dents, and/or mashed ends.
Field Repair If necessary, slight thread repairs by # 400 emery cloth or file, can be performed by Tenaris personnel or by certified personnel of a thir party company. Slight repairs can be made only on the thread or on the shoulder area, but not on the seal area. Only mild oxidation is alloyed to be removed from the seal by means of a Scotch Brite. Repairs must not change the shape of the original surface. When the damages cannot be solved by field repair, the t must be rejected.
Field Repair on Coated Pipes Any damage on the coatings must be repaired either by the coating company or by certified personnel of a third party company.
Field Repair on Fiber Glass Lined Pipes When tubulars with fiber glass lining are to be run, no damages are allowed to be field repaired.
Installation of Seal Rings If required by the customer, seal rings can be installed in the mill prior to application of thread compound and protectors. Otherwise, seal rings must be securely packaged and forwarded to a location designated by the customer. Prior to installation, seal rings identification shall be verified. Appropriate seal rings shall be obtained through the Tenaris Licensee Group. Visually inspect the seal ring groove/location for cleanliness. Remove all grease, oil, metal shavings, or other contaminants before the installation of a seal ring. Dry the seal ring groove/location before installing the seal ring. For seal rings installation, compress the seal ring with the fingers, so that it partially collapses into the inside diameter of the pipe. Place the collapsed seal ring into the seal ring groove and release it. Firmly seat the seal ring into the groove by applying direct pressure to the face of the ring for the entire circumference (360 degrees).
Seal ring (Normal and Collapsed) A tool to seat the seal ring may be made from a hammer handle, an axe handle, or other similar device, depending on the OD of the connection. The end of the tool shall be shaped to the face of the seal ring squarely (metallic tools are not acceptable). Leverage the tool against the face of the box to apply pressure to the face of the seal ring. Seal rings installed in the seal ring grooves shall not protrude beyond the internal diameter of the coupling or the lining. This shall be verified with a straight edge placed on the internal diameter. If the seal ring pops out of the coupling internal diameter, the seal ring size and seal ring groove dimensions. The seal rings should be installed shortly before the pipe´s running. Seal rings and pipes should be aproximately at the same temperature before installation.
Pipes Lifting from Rack to Rig Floor During the transportation to the rig floor, the thread protectors must be kept installed. For CRA materials, the use of a pick-up/lay-down equipment with travelling basket coated with rubber or with other soft materials is requested. Metal to metal is not acceptable for CRA materials. For standard materials, load and unload using certified textile slings. Single t elevators are recommended for all materials. On the rig floor, the pipe string shall be sustained by a device that must not leave incisions or dents on the external surface of the pipe.
Running Manual
9
Running Operations on the Rig Floor
Thread Compound Application
While the pipe is in the travel basket or laid on the "V" door, remove the thread protector of the box/coupling, wipe with a clean cloth the box/coupling or blow it with a jet of compressed air and apply the proper amount of thread compound as per pipe manufacturer recommendations.
Thread storage compound shall be thoroughly removed from the connection before applying running thread compound.
While the pin is lifted up in vertical position, remove the protector and wipe the thread with a jet of compressed air. Inspect the thread to assure that it has not been damaged and it has been properly cleaned.
Apply an even coat of manufacturer recommended connection thread compound (see Recommended Thread Running Compound) filling the full thread area and covering the seal surface and torque shoulder of pin or box (as per connection manufacturer recommendation). Do not overdope, the thread pattern should still be evident after doping.
Apply the proper amount and type of thread compound as per the pipe manufacturer recommendations. Stab the pin into the box of the previous pipe, make them up and run them into the hole.
Dope
Thread
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Running Manual
Recommended Thread Running Compounds RUNNING THREAD COMPOUND* TYPE
APPROVED TRADE MARK
API Modified
Any certified API modified Thread
Thread Compound
Compound.
Environmentally Safe
Jet-Lube-Enviro-Safe Best-O-Life PTC Total Compound
that quantity of dope does not exceed the maximum specified. Excessive thread dope may affect the connection performance.
Thread Lock Application When thread lock is required, both pin and box connections must be cleaned, dried, and free of contaminants. Apply thread lock compound only on the first two thirds of the pin threads near the pipe end, excluding the seal area of the pin. A uniform coat should be applied, a full 360 degrees.
Shell Malleus 0459 *For other running thread compounds, please consult us.
Keep the dope well mixed, and stir it very well before using. If the compound is too thick because of the low external temperature, it can be warmed up to a maximum of 30°C and mixed up. Never use oil or solvent to dilute the thread compound. Keep the dope container covered in order to avoid contamination from dust, water, or other dangerous elements. Use new brushes with clean and soft bristle; never use metallic brushes or spatulas. Use mustache type brush for box end and plain type bruch for pin end. Apply thread compound in a continuous film all over the surface of threads and seals as per the connection manufacturer recommendations. When automatic dope applicator is used, try to check the dope weight sprayed by collecting it and putting it on a scale. Set up the dope applicator until the minimum weight is reached. When a brush is used, weigh the minimum requested quantity of dope with a scale, to have an idea of the dope volume. Special care should be taken to make sure
Then, apply thread compound to the internal seal of the box, covering 360 degrees. The connection shall be made-up as soon as possible after the thread lock and thread compound have been applied. A torque in excess of the maximum make-up torque may be required to shoulder the connections.
Stabbing Stabbing and initial thread engagement is the most critical aspect of running connections. A stabbing guide shall be used on the pipe box thread to prevent damage to thread and seal surfaces. The pipe must be properly positioned and under complete control before stabbing is conducted. The pipe must be in true vertical alignment over the box. Movement or sway of the pipe should be limited to the minimum extent possible. Personnel on the rig floor and the stabbing board should always control stability and movement of the pipe. Only after the pipe is stabilized and properly positioned, lower the pipe slowly to avoid thread damage. Once the face of the pin is even with the face of the box, the pin connection should be lowered very slowly into the box. This process will allow the stab flank of the pin threads to align with the flank threads of the box and reduce the possibility of misstabbing, or cross threading.
Running Manual
11
Hydraulic Tong Position
Backup Tong Position Yes
No
Align the pipe with the coupling axis
The stabbing operation is particularly critical with high alloy steels that have a tendency to gall.
Thread Engagement Remove stabbing guide after stabbing. Then rotate the pipe by hand or manual wrench for a couple of turns. If the weight of the pipe prohibits turning by hand, turn it very slowly with tongs (connection should be free running without torque required) to ensure proper thread engagement. Crossthreading and misalignment may be corrected now. The stabber must not rock the pipe during initial stab or make-up. In case of a misstab, rotating the connection counterclockwise 1/4 to 1/2 turns will correct the misalignment and give proper thread engagement. Re make-up following the previous indications. When making up corrosion resistant alloys (CRA) pipes, strap wrenches should be used after stabbing to make the pin up to the hand tight position or at minimum until a secure thread start has been achieved.
Connection Make-up Power tongs are required. Pipe wrenches, rig tongs or spinning chain make-up are not recommended. A back-up tong may be required until sufficient string weight is developed to prevent the t from turning in the slips. Set the power tong and the back-up tong as close as possible to prevent bending during make-up. The back-up tong should be of a sufficient width to prevent crushing the pipe body. Do not set the backup tong over the box threads. Do not latch the elevators on the pipe until the connection is made-up completely. During power make-up operations, the torque shall be continuously monitored. The usage of Torque vs Turns make-up
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Running Manual
monitoring system with a valid calibration is requested. The accuracy of turn measurement shall be higher than 1/100 of a turn. A computer display is required to monitor the make-up, and shall be capable of printing hard copies of make-up graphs to be kept on file. A make-up torque graph shall be generated for every connection. In the event a graph is not produced or is lost, the connection shall be considered as rejected. When combining different weights (i.e. 5” x 15 lb/ft with 5” x 18 lb/ft) or different grades (i.e. L80 and P110), use the torque corresponding to the lightest weight and the lowest grade. Before starting the running, the equipment must be set up with the following values provided by the connection manufacturer: • • • • • •
Minimum make-up torque Optimum make-up torque Maximum make-up torque Minimum shoulder torque Maximum shoulder torque Reference torque
The initial recommended value for the reference torque is 5% of the minimum recommended torque. While running, the reference torque value shall be adjusted to have 1.0 to 1.5 turn in the display, but it shall remain between 2% to 10% of the minimum recommended torque.
Make-up Speed After stabbing, the first 1 or 2 turns must be performed at low speed to assure proper made-up. Then a higher rotation speed can be applied, and at the last 1 or 2 turns, the speed must be reduced again to a low value.
Running Pipes with Automated Rigs When the strings are run by means of automated rigs, the running procedure varies due to the lack of people operating around the rotary area. Tongs are remotely operated from a safe distance from the working area. Besides the pre-running operations (thread cleaning, drifting, visual inspection, seal ring installation, pipe length measurement), the thread compound (or thread lock) must be applied while ts are on the racks.
After that, the arm of the automatic equipment will pick each t up and it will deposit them on the tray to be transported to the rotary area. There is no need for performing any manual operation from this point, as the officer in charge of driving the automatic equipment will position the pipe in a vertical way and will make-up the connection according to the desired rotary speed and torque value.
Make-up Torque Curve Pattern TYPICAL MAKE UP CURVE GENERATED FOR EACH T
TORQUE
MAXIMUM MAKE UP TORQUE OPTIMUM MAKE UP TORQUE MINIMUM MAKE UP TORQUE
Final Torque
MAXIMUM SHOULDER TORQUE
Shoulder Torque Thread Interference
Seal Interference MINIMUM SHOULDER TORQUE REFERENCE TORQUE
TURNS
Running Manual
13
Make-up Acceptance Criteria The make-up shall be accepted whenever the curve resulting from the make-up operation adjusts to the patterns shown below:
TYPICAL CURVE
TORQUE
MAXIMUM MAKE UP TORQUE Final Torque MINIMUM MAKE UP TORQUE
MAXIMUM SHOULDER TORQUE
Shoulder Torque Ok MINIMUM SHOULDER TORQUE REFERENCE TORQUE
TURNS
CURVE WITH SLIGHT OSCILATIONS
TORQUE
MAXIMUM MAKE UP TORQUE MINIMUM MAKE UP TORQUE
MAXIMUM SHOULDER TORQUE
Shoulder Torque Ok MINIMUM SHOULDER TORQUE REFERENCE TORQUE
TURNS
Slight oscilations in thread interference length are acceptable.
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Running Manual
Make-up Rejection Criteria Make-up Torque Under Minimum or Over Maximum Specified Value
TORQUE
MAXIMUM MAKE UP TORQUE OPTIMUM MAKE UP TORQUE
If the minimum specified make-up torque is not reached, or the maximum specified make-up torque is exceeded, the the connection shall be broken out, cleaned, inspected and if it is not damaged, redoped and re-madeup.
MINIMUM MAKE UP TORQUE MAXIMUM SHOULDER TORQUE
Shoulder Torque
MINIMUM SHOULDER TORQUE
REFERENCE TORQUE
TURN
Torque Shoulder not Defined
• • • • •
Possible reasons Misalignment between pin and box Threads not clean Wrong torque Not enough thread compound Torque cell not properly calibrated
Consequences • Risk of leaking • Risk of accidental unscrewing
MAXIMUM MAKE UP TORQUE TORQUE
There is high thread/seal interference before shoulders get in touch.
OPTIMUM MAKE UP TORQUE MINIMUM MAKE UP TORQUE MAXIMUM SHOULDER TORQUE
MINIMUM SHOULDER TORQUE
REFERENCE TORQUE
TURN
The connection shall be broken out, cleaned, inspected, and if it is not damaged, redoped and re-madeup.
Running Manual
15
Torque Shoulder Below or Above the Specified Window There is low or high thread/seal interference.
TORQUE
MAXIMUM MAKE UP TORQUE OPTIMUM MAKE UP TORQUE MINIMUM MAKE UP TORQUE MAXIMUM SHOULDER TORQUE
Possible reasons • Wrong torque • Wrong thread compound • Torque cell not properly calibrated
High Shoulder Torque
MINIMUM SHOULDER TORQUE
Consequences • Risk of leaking • Risk of accidental unscrewing
Low Shoulder Torque REFERENCE TORQUE
TURN
The connection shall be broken out, cleaned, inspected, and if there is no damage, redoped and re-madeup.
Connection’s Plastic Deformation This may happen when the final torque exceeds the connection yield torque. MAXIMUM MAKE UP TORQUE TORQUE
The connection shall be broken out and the pin and box connection shall be rejected and marked accordingly.
OPTIMUM MAKE UP TORQUE MINIMUM MAKE UP TORQUE MAXIMUM SHOULDER TORQUE
MINIMUM SHOULDER TORQUE
REFERENCE TORQUE
TURN
Aborted Make-up MAXIMUM MAKE UP TORQUE OPTIMUM MAKE UP TORQUE
TORQUE
Make-up process shall not be interrupted before reaching the minimum make-up torque value.
MINIMUM MAKE UP TORQUE
The connection shall be broken out, cleaned, inspected, and if there is no damage, redoped and re-madeup.
MAXIMUM SHOULDER TORQUE Aborted
Possible Result if not Aborted
MINIMUM SHOULDER TORQUE
REFERENCE TORQUE
TURN
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Running Manual
General Note Connections that do not produce an acceptable graph within three make-ups shall be rejected and identified accordingly. Connections that show visible damage and that can not be field repaired shall be rejected and identified accordingly.
Severe Deviations Prior to Shouldering
MAXIMUM MAKE UP TORQUE MINIMUM MAKE UP TORQUE Hump
MAXIMUM MAKE UP TORQUE OPTIMUM MAKE UP TORQUE
TORQUE
TORQUE
OPTIMUM MAKE UP TORQUE
MINIMUM MAKE UP TORQUE
MAXIMUM SHOULDER TORQUE
MAXIMUM SHOULDER TORQUE
MINIMUM SHOULDER TORQUE
MINIMUM SHOULDER TORQUE
REFERENCE TORQUE
REFERENCE TORQUE
TURN
TURN
Possible cause: excesive dope amount or dope contamination.
Possible cause: galling or crossthread.
If the maximum hump torque is higher than the maximum shoulder torque, the connection shall be broken out, cleaned, inspected and if it is not damaged, redoped and remade-up.
Tong or Backup Dies Slipping on Pipe Body
TORQUE
MAXIMUM MAKE UP TORQUE OPTIMUM MAKE UP TORQUE MINIMUM MAKE UP TORQUE
Possible reasons • Non-suitable dies on tong or backup • Dirty or worn dies • Hydraulic pressure in backup too low
MAXIMUM SHOULDER TORQUE
Jaws Slip MINIMUM SHOULDER TORQUE
Possible consequences • Damage on pipe body • Wrong diagrams even with correct make-up
REFERENCE TORQUE
TURN
The connection shall be broken out, cleaned, inspected, and if there is no damage, redoped and re-madeup.
Possible cause: dies slipping.
Running Manual
17
Visual Inspection after Make-up Subsequent to each make-up, the area of the pipe/coupling that was gripped by the power tongs/back-up device, as well as the slip area, shall be visually inspected to determine if the pipe/coupling has been damaged. lf there are excessive tong gouges on either the pipe or couplings, the gouges shall be evaluated in accordance with API Spec 5CT (see table).
PERMISSIBLE DEPTH OF IMPERFECTIONS IN COUPLINGS (API 5CT) DIAMETER PRODUCTS & SIZES
Tubing Smaller than 3 1/2” 3 1/2” to 4 1/2" Smaller than 6 5/8” Casing 6 5/8” to 7 5/8” Larger than 7 5/8”
G1, G2 (EXCEPT C90 AND T95) & G3 PITS AND ROUNDED MARKS
G2 (C90 AND T95) & G4
GRIP MARKS AND SHARP PATTERN
ALL
in.
mm.
in.
mm.
in.
mm.
0.030 0.045 0.035
0.76 1.14 0.89
0.025 0.030 0.030
0.64 0.76 0.76
0.030 0.035 0.030
0.76 0.89 0.76
0.045 0.060
1.14 1.52
0.040 0.040
1.02 1.02
0.035 0.035
0.89 0.89
G1: All casing and tubing in Grades H, J, K and N. G2: All casing and tubing in Grades C, L, M and T. G3: All casing and tubing in Grade P. G4: All casing in Grade Q.
Tubular Rig Returns On those pipes that are not used or returned to stock, al connections should be washed and dried to remove any corrosive contaminants, then greased and clean protectors installed. No connections should be left witohut storage dope and protectors installed. Pipes´ stock should be periodically inspected every 6-8 months in places with gentle weather and more often in places with extreme weather conditions.
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Running Manual
Connection Break-out To break out the Tenaris family of connections, the same equipment used to make them up will be required.
be stopped before additional turning of the connection is continued.
If string has been in service for some time, the break-out torque will likely be higher than the torque required to makeup the connections.
Maintain a steady, controlled speed until the pin jumps inside the box. A single t elevator is recommended to reduce misalignment during the lifting process. A weight compensator is recommended to be used to reduce thread galling during break-out.
For coupled connections, the back-up tong should always be set on the coupling central area during breaking-out, so it is necessary to prepare the back-up tong die for the coupling size. Hammering the cupling or connection is not allowed.
Stop rotation immediately when the pin jumps inside the box. A stabbing guide shall be used prior to lifting the pin out of the box. The pin must be carefully lifted out of the box to avoid damage. This is critical on heavy weight pipe or when pulling double or triple stands. Remove the power tong before lifting the pin out of the box. Do not lift the exposed pin threads through the tong. Before moving the pipe further, protect the threads by installing a clean, dry thread protector or lift plug as appropriate. For flush connections, the use of safety clamps is highly recommended.
Backup Tong Position During Break-out
Inspection Once the connection is broken, a brief inspection of seal and threads of both pin and box should be conducted. All connections should be broken out and rotated out in low gear only. To break-out the connections, unlatch the elevators before breakout. Locate the connection to be broken out at a comfortable working height above the slips. Set the power tong and the backup tong or slips as close as possible to prevent bending during breakout. Maintain vertical alignment and control of pipe. This is accomplished by a man on the stabbing board. Slowly apply the torque required to break the connection. (Never use a hammer or other hard object to beat on a connection. The resultant damage could lead to a failure.) Depending on the torque required, the upper end of the pipe may start moving. Pipe movement shall
Particular attention must be paid to: • • • • •
Seals for evidence of galling Threads for evidence of galling Pipe for damage caused by power tong or back-up tong dies Pipe for damage caused by elevator or slip dies Any foreign material in the threads or in the torque shoulder/seal area of the box member
Re-Running To re-run a string of Tenaris Connections, the same procedure as in the initial running should be followed.
Running Manual
19
Running and Pulling General Recommendations - Summary
Running
Pulling
• Remove thread protectors from pin and coupling ends. • Clean the connection with a non-metallic bristle brush and steam or a quick drying solvent type cleaner (without chlorine). • Clean and dry thread protectors. Reject damaged protectors. • Make sure that the internal surface of the pipes is clean and free from foreign material. • Check and clean (by air jet) inside the tubulars to eliminate any foreign material. • drift from the coupling or box end to the pin end avoiding damages on threads and shoulders. • Tubulars that do not the drift mandrel shall be marked with a reject paint band and laid aside. • For CRA and coated material, use a non-metallic drift or a drift coated with plastic or Teflon. • Measure the Total Length of each piece of casing / tubing / accessory. • Calculate the Effective Length of each t by deducting the Make-up Loss from the Total Length. • Visually inspect the connection to assure they are:
• Use of weight compensator system is requested, specially in the case of CRA grades. • For coupled connections break-out, the back-up tong shall be set on the coupling middle position. • The break-out torque will likely be higher than the torque required to make up the connections. • All connections should be broken out and rotated out in low gear only. • Never use a hammer or other hard object to beat on a connection. • Maintain a steady, controlled speed until the pin jumps inside the coupling (avoid bumping). • Stop rotation immediately when the pin jumps inside the coupling. • A stabbing guide shall be used prior to lifting the pin out of the coupling. • The pin must be carefully lifted out of the box avoiding to damage it. • Before moving the pipe further, protect the threads by installing a clean and dry thread protector. • Once the connection is broken out, a brief visual inspection of both pin and coupling should be conducted. Particular attention must be paid to:
- Free from dust due to a long and/or incorrect storage. - Free from handling and transport damages. - Free from burrs or wear. • Never attempt to repair the seal area of the connections. • Slight repairs can be made by # 400 emery cloth or file only on the threads or on the shoulder area. • After repairing, threads must be cleaned again and dried. • During pipe moving to the rig floor, thread protectors must be kept installed. • Use of weight compensator system is requested, specially in the case of CRA grades.
- Threads for evidence of galling. - Pipe body for damages caused by power tong, backup tong, elevator or slip dies. - Any foreign material in the threads or in the torque shoulder of the coupling. • If the string is pulled out in stands, pin thread protectors should be on straight and tight. • Stands should be properly tied with a band to prevent bending.
Note: this section does not replace the Tenaris Running Manual. It shall be used together with it.
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Running Manual
Specific Guidelines TenarisBlue™ THREAD COMPOUND RECOMMENDED AMOUNT SIZE OD in.
ANY RECOMMENDED DOPE TYPE cu. cm min.
2 3/8 2 7/8 3 1/2 4 4 1/2 5 5 1/2 6 6 5/8 7 7 5/8 8 5/8 9 5/8 9 7/8 10 3/8 10 3/4 11 3/4 13 3/8 13 5/8
API MODIFIED THREAD COMPOUND SPECIFIC GRAVITY = 1,85
cu. cm max.
gr min.
7 9 11 12 14 15 17 27 30 32 34 39 43 44 47 48 53 60 61
9 11 13 15 17 19 20 39 43 45 49 56 62 64 67 70 76 87 88
5 6 7 8 9 10 11 21 23 25 27 30 34 35 36 38 41 47 48
gr max. 13 16 19 22 25 28 31 50 55 58 63 72 80 82 86 89 98 111 113
In order to define running compound by weight, its Specific Gravity shall be used: Running Compound Weight = Volume (cu.cm) x Specific Gravity (gr/cu.cm)
THREAD COMPOUND DISTRIBUTION GRADE
CRA
Condition
Mandatory
Recom.
OTHERS
Pin
30%
30%
0%
Box
70%
70%
100%
Optional
Note: Do not fill the dope pocket with thread compound during its application.
Running Manual
21
Tenaris MS™, MS28™, Tenaris ER™ and Tenaris PJD™ THREAD COMPOUND RECOMMENDED AMOUNT SIZE OD in.
ANY RECOMMENDED DOPE TYPE
API MODIFIED THREAD COMPOUND SPECIFIC GRAVITY = 1.85
cu. cm
gr
5 6 8 9 10 16 18 19 22 23 25 28 31 32 34 35 38 43 44 53 57 61 71 76 91 93
10 12 14 16 18 30 33 36 40 42 46 52 58 59 62 65 71 80 82 98 105 112 131 141 169 172
2 3/8 2 7/8 3 1/2 4 4 1/2 5 5 1/2 6 6 5/8 7 7 5/8 8 5/8 9 5/8 9 7/8 10 3/8 10 3/4 11 3/4 13 3/8 13 5/8 14 15 16 18 5/8 20 24 24 1/2
In order to define running compound by weight, its Specific Gravity shall be used: Running Compound Weight = Volume (cu. cm) x Specific Gravity (gr/cu. cm)
THREAD COMPOUND DISTRIBUTION
22
Running Manual
GRADE
CRA
Condition
Mandatory
Recom.
OTHERS
Pin
30%
30%
0%
Box
70%
70%
100%
Optional
Special Care for Connections with Seal Ring For seal ring models always dope the box area between the seal ring and the shoulder.
Special Care for Connections with Fiber Glass Lining (FGL) When installing seal rings of FGL Models, assure that the seal ring is properly placed in the space between the flange and the coupling. Avoid any misalignment.
Coupling
Pin Lining ERFV Seal Ring
Flange
Apply thread compound only on pin . Do not apply thread compound on the protruding nose of the connection.
Do not apply dope in this area
Never run a pipe with damages in the ERFV lining
Running Manual
23
Special Care for Connections with Corrosion Barrier (CB) Use Shell HTHP 72732 thread compound for make up. The use of compound with different properties may result in low or over torque of the connection, galling and/or leaking. Environmental friendly compounds may be used with Tenaris approval. Apply thread compound only on pin . The use of Molykote (Molybdenum disulphide) is recommended to cover the seal area (Part B). Use the recommended thread compound to cover the threaded area (Part A).
Part B Part A
Note: Thread compound could be used to cover the seal area instead of Molykote, in this case a thin, uniform film covering the seal along the circumference (360°) should be applied. Avoid doping the small protruding nose outside Part B. In this case each made up connection must be checked with a “Teflon drift” to the seal ring has not been damaged during make up. If pipe or coupling coated area is damaged, it must be repaired before running the string. This activity can be performed by the coating company or by authorized and certified personnel of a third part company.
Torque vs. Turns Monitoring System For the making up of the Tenaris ER connection the use of a Torque vs. Turns Monitoring System is not required.
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Running Manual
Tenaris 3SB™, Tenaris HW™, and Tenaris EL™ THREAD COMPOUND RECOMMENDED AMOUNT SIZE
ANY RECOMMENDED DOPE TYPE
API MODIFIED THREAD COMPOUND SPECIFIC GRAVITY = 1,85
OD
TENARIS 3SBTM
TENARIS HWTM
TENARIS ELTM
in.
cu. cm
cu. cm
cu. cm
2 3/8 2 7/8 3 1/2 4 4 1/2 5 5 1/2 6 6 5/8 7 7 5/8 8 5/8 9 5/8 9 7/8 10 3/8 10 3/4 11 3/4 13 3/8
6 8 10 11 12 16 19 22 24 27 32 38 34
TENARIS 3SBTM
TENARIS HWTM
gr.
gr.
9 11 14 15 17
12 14 18 20 23 30 35 40 45 50 60 70 62
24 27 32 32 38 43 49 54
43 54 65
TENARIS ELTM gr. 17 20 25 28 32
45 50 60 60 70 80 90 100
80 100 120
70
130
In order to define running compound by weight, its Specific Gravity shall be used: Running Compound Weight = Volume (cu. cm) x Specific Gravity (gr/cu. cm)
THREAD COMPOUND DISTRIBUTION GRADE
CRA
Condition
Mandatory
Recom.
OTHERS
Pin
30%
30%
0%
Box
70%
70%
100%
Optional
Note: Special care shall be taken to not over-dope the connection. Over-doping can lead to excessive dope pressure built up and abnormal Torque vs. Turns curves.
Running Manual
25
Sec THREAD COMPOUND RECOMMENDED AMOUNT SIZE OD in.
ANY RECOMMENDED DOPE TYPE cu. cm min.
2 3/8 2 7/8 3 1/2 4 4 1/2 5 5 1/2 6 6 5/8 7 7 5/8 8 5/8 9 5/8 9 7/8 10 3/8 10 3/4 11 3/4 13 3/8 13 5/8
API MODIFIED THREAD COMPOUND SPECIFIC GRAVITY = 1,85
cu. cm max.
gr min.
14 17 21 24 27 35 38 42 46 49 54 61 68 69 72 75 82 94 95
18 21 26 30 33 46 51 56 61 65 71 80 9 91 96 99 109 124 126
10 11 14 16 18 25 28 30 33 35 38 43 48 49 52 54 59 67 68
gr max. 26 32 39 44 50 65 71 78 86 91 99 112 125 128 134 139 152 173 176
In order to define running compound by weight, its Specific Gravity shall be used: Running Compound Weight = Volume (cu. cm) x Specific Gravity (gr/cu. cm)
THREAD COMPOUND DISTRIBUTION GRADE
CRA
Condition
OTHERS
Mandatory
Recom.
Pin
30%
30%
Optional 0%
Box
70%
70%
100%
Note: Special care shall be taken to not over-dope the connection. Over-doping can lead to excessive dope pressure built up and abnormal Torque vs. Turns curves.
Delta Torque Definition Delta Torque % =
Final Torque – Shoulder Torque Final Torque
x 100
Tenaris makes available this Manual for informational purposes only and in no way assumes responsibility or liability for any loss, damage, or injury resulting from the use of information and data herein. The technical information contained herein should not be construed as a recommendation. Although reasonable efforts have been made to maintain the accuracy and reliability of its content you should only rely on its conclusions at your own risk. You should not rely on descriptive product data or other information in this Manual without professional engineering advice.
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Running Manual
Managing Director Jim Aivalis [email protected] www.tenarisconnections.com
ARGENTINA Buenos Aires Rolando Lange [email protected] (86) 10 6437 6744 tel (86) 10 6437 6746 fax
COLOMBIA Bogota Sergio Chamorro [email protected] (603) 216 48115 tel (603) 216 48117 fax
www.tenarisconnections.com Version 02 / April 2004. ©Tenaris. All rights reserved.
MEXICO Veracruz Luis Conde [email protected] (971) 4 2725 394 tel (971) 4 2725 392 fax
UK Aberdeen John Mennie [email protected] (58) 212 902 3969 tel (58) 212 902 3937 fax
Tenaris Marketing Communications [email protected]
Index
5
7
10
Equipment Preparation Slips and Elevators Safety Clamps Strap Wrenches Single t Compensator Stabbing Guides Handling and Lifting Plugs Power Tongs
Pre-Running Operations Drifting Pipe Length Measurement Cleaning Visual Inspection of Threads Before Make-up Field Repair Field Repair on Coated Pipes Field Repair on Fiber Glass Lining Pipes Installation of Seal-Rings Pipes Lifting From Rack to Rig Floor
Running Operations on the Rig Floor Thread Compound Application Recommended Thread Running Compounds Thread Lock Application Stabbing Thread Engagement Connection Make-up Make-up Speed
13
Running Pipes With Automated Rigs Make-up Torque Curve Pattern
14
Make-up Acceptance Criteria
15
Make-up Rejection Criteria
18
Visual Inspection After Make-up Tubular Rig Returns
19
Connection Break-out Inspection Re-Running
20
Running and Pulling Recommendations
21
Specific Guidelines Tenaris BlueTM Tenaris MSTM, MS28TM, Tenaris ERTM and Tenaris PJDTM Special Care for Connections with Seal Ring Special Care for Connections with Fiber Glass Lining (FGL) Special Care for Connections with Corrosion Barrier (CB) Torque vs. Turns Monitoring System Tenaris 3SBTM, Tenaris HWTM, and Tenaris ELTM Sec Delta Torque Definition
This manual details the recommended practices to aid in the successful running and pulling of the Tenaris family of connections. It has been designed to provide an insight to avoid the most common causes of pipe and connection damages resulting from improper planning, incorrect rig operations, or inappropriate material handling procedures. The following sections detail the specific practices to be performed in each operation. This is a general manual that must be used together with the specific guidelines of the connection to be run.
Equipment Preparation All accessory and backup equipment, such as cross-overs, safety subs, float equipment and packer assemblies, should be inspected to ensure they are in proper condition. Since accessories are obtained from several sources, care should be taken to ensure they were threaded with the correct connection. Only accessories threaded by Tenaris or one of their licensed repair shop facilities should be used.
during the running of the first tubing and casing connections and during the pulling out of the last tubing and casing connection. Its condition should be inspected and worn parts replaced at the beginning of each operation.
Slips and Elevators
When making up corrosion resistant alloys (CRA) pipes, strap wrenches should be used after stabbing to make the pin up to the hand tight position or at minimum until a secure thread start has been achieved. All straps should be checked prior to start-up to ensure their proper diameter capability and their cleanness. Once straps become soiled and begin slipping, they should be replaced.
Either slip or collar type elevators may be used for casing and tubing strings. The inserts of the slips and slip type elevators must be clean and sharp. Extra long slips and slip type elevators shall be used on long and/or heavy strings. lf collar-type elevators are used, the bearing surface shall be carefully inspected to ensure a smooth flat bearing perpendicular to the pulling direction. An uneven bearing surface can damage the coupling and lead to a premature connection failure. Spider and elevator slips shall be examined to see that all the surfaces the pipe evenly. Uneven can dent the pipe or cause excess slip-cutting. The use of high-density inserts is recommended for critical service materials.
Safety Clamps The safety clamp is used to suspend the column in case of insufficient grip by the elevator. The safety clamp must be used
Strap Wrenches
Single t Compensator A single t compensator is recommended to be used during running and pulling of heavy wall casing and any CRA tubulars to reduce the compression loads on the threads that are normally incurred during the stabbing, make-up and pull out process. Care must be taken to properly adjust the tension value of this component prior to the first t being stabbed. This will minimize cross-thread damages and galling during the make-up and break out process.
Running Manual
5
Power tong torque 90º
90º
Load Cell
Close as practical
Short as practical
Power Tong - upper view
Stabbing Guides
Load Cell Installation - side view
operations, as well as in case of heavy impact in the lifting plug throughout the operation, the lifting plug must be inspected visually and replaced in case of damage.
Stabbing guides shall be used to guide the pin into the box and minimize damage to the connection if the t is misstabbed. The stabbing guide must be checked prior to running to ensure proper fit and condition of the elastomeric inserts.
Power Tongs
Handling and Lifting Plugs
The tongs should be in good condition, with jaws that correctly fit the pipe.
Handling plugs are not designed to more than a single stand of pipe. Handling plug threads must be cared for and maintained. Threads should be cleaned, inspected and handled so as to prevent damage. To ensure proper thread engagement, both the handling plug and the pipe box threads should be free of any dirt, paint, and storage compound. Plugs should be doped and fully made-up by hand, then tightened by pushing it with a bar. Handling plugs also provide protection of the box threads from damage by tools or test equipment, which may be run inside the pipe. Lifting plugs are designed to the entire weight of the string. The lifting plugs must be doped and fully made-up and power tight to shoulder to achieve full rated lift capacity. Proper handling practices and sound judgement must be used at all times to maintain the rated lift capacity of the plug. Damaged lifting plugs should not be used. At the beginning of each
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Running Manual
It is recommended to use tongs with back-up. Tongs shall be equipped with a rotation speed control and should de capable of operating at a minimum of 3 rpm. It is imperative that the makeup torque is accurately measured and controlled. Torque measuring equipment should be in good working order, cover the appropriate range, and a recent calibration certificate should be demanded from the power tong contractor prior to starting the job. When using tongs with built-in back-up, free motion should be possible between tong and back-up to ensure there is sufficient travel in the back-up to absorb the make-up loss and there is sufficient flexibility in the tong/back-up to compensate for a slight bend and the normal eccentricity between pin and box. If a snub line is used, it should be set at a 90-degree angle to the arm of the tong.
Pre-running Operations Drifting It is requested that each length of the tubulars (casing, tubing, accessories) be drifted for its entire length just before running. Before drifting, make sure that the internal surface is clean and free from foreign matter that can prevent the correct running of the drift and can be mixed with make-up compound during assembly. If compressed air is available, apply the air jet from box to pin.
API STANDARD DRIFT MANDREL SIZE (MIN.) PRODUCTS & SIZES (Ø”) Casing and Liners Smaller than 9 5/8” 9 5/8” to 13 3/8” Larger than 13 3/8” Tubing 27/8” and smaller 3 1/2” and larger
LENGTH
DIAMETER
in.
mm.
in.
mm.
6 12 12
152 305 305
d - 1/8 d - 5/32 d - 3/16
d - 3.18 d - 3.97 d - 4.76
42 42
1,067 1,067
d - 3/32 d - 1/8
d - 2.38 d - 3.18
d= Nominal pipe body internal diameter
The drift shall be handled with care when inserted and when extracted from the pipe, and drifting should be preferably performed from the box side to the pin side to avoid damage on threads, seals and shoulders. It is recommended to perform drifting while the pipe is on the rack. Tubulars that do not the drift mandrel shall be marked with a reject paint band, and laid aside for further investigation.
For CRA and coated material, it is recommended to use nonmetallic drift or a drift coated with plastic or with Teflon. Make sure that the drift mandrel OD conforms to the API 5CT specifications or to the customer´s special drift purchase specification. When specified by the purchaser, casing can be "Special Drifted". Sizes are shown in API RP 5A5 "Recommended Practice for Thread Inspection of new Casing, Tubing and Plain End Drill Pipe", or special drift purchase specifications.
Running Manual
7
Pipe Length Measurement The length of each piece of casing and tubing should be measured prior to running. A calibrated steel tape should be used. The measurement should be made from the outermost face of the coupling or box to the outermost face of the pin nose.
If running is to be delayed, an application of some corrosion protection over the threads should be considered. If the connection is cleaned until twelve hours before the t is run, a light oil should be applied by means of a brush or a spray applicator. If it will be more than twelve hours until a t is to be run, some storage compound and clean thread protectors should be re-applied.
The Effective Length (EL) of each t is the Total Length (TL) minus the Make-up loss (ML).
Care must be taken to ensure that the cleaning process does not cause environmental pollution.
Cleaning
Visual Inspection of Threads Before Make-up
It is essential that no hard foreign matter is present on the threads or seals during make-up. Cleaning should be performed just before running in the hole and after drift test, especially in corrosive atmosphere.
Before the make-up on the rig floor, all threads will be submitted to visual inspection.
Remove threads protectors from pin and box ends.
Pipe should be on a rack allowing enough space for 360° revolution for inspection to assure that each connection is:
Clean all thread or storage compounds with any suitable cleaning process, such as non-metallic bristle brushes and hot water or a quick-drying solvent-type cleaner (without chlorine). Do not use diesel or "oily solvent". Use of compressed air is advisable to dry pin and box.
• • • • •
Check and clean inside the tubulars to eliminate any foreign material that may fall into the box while stabbing. If compressed air is available, apply the air jet from box to pin.
Minor anomalies on thread and torque shoulder surfaces can be field repaired. Damage on seal surfaces, other than mild oxidation, is cause for rejection (see Field Repair). After repairing, threads must be re-cleaned and dried.
The most desirable approach would be to clean the connection at a temperature above 10°C (50°F) so as to remove all traces of moisture and/or extraneous matter. Clean and dry thread protectors.
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Running Manual
Well cleaned Free from rust due to a long and/or incorrect storage Free from handling damages Free from longitudinal cuts and scratches in the seal area Free from burrs or wear
Exposed seal surfaces, such as pin nose areas, are particularly susceptible to handling damage. Special care should be taken in inspection of these areas for dings, dents, and/or mashed ends.
Field Repair If necessary, slight thread repairs by # 400 emery cloth or file, can be performed by Tenaris personnel or by certified personnel of a thir party company. Slight repairs can be made only on the thread or on the shoulder area, but not on the seal area. Only mild oxidation is alloyed to be removed from the seal by means of a Scotch Brite. Repairs must not change the shape of the original surface. When the damages cannot be solved by field repair, the t must be rejected.
Field Repair on Coated Pipes Any damage on the coatings must be repaired either by the coating company or by certified personnel of a third party company.
Field Repair on Fiber Glass Lined Pipes When tubulars with fiber glass lining are to be run, no damages are allowed to be field repaired.
Installation of Seal Rings If required by the customer, seal rings can be installed in the mill prior to application of thread compound and protectors. Otherwise, seal rings must be securely packaged and forwarded to a location designated by the customer. Prior to installation, seal rings identification shall be verified. Appropriate seal rings shall be obtained through the Tenaris Licensee Group. Visually inspect the seal ring groove/location for cleanliness. Remove all grease, oil, metal shavings, or other contaminants before the installation of a seal ring. Dry the seal ring groove/location before installing the seal ring. For seal rings installation, compress the seal ring with the fingers, so that it partially collapses into the inside diameter of the pipe. Place the collapsed seal ring into the seal ring groove and release it. Firmly seat the seal ring into the groove by applying direct pressure to the face of the ring for the entire circumference (360 degrees).
Seal ring (Normal and Collapsed) A tool to seat the seal ring may be made from a hammer handle, an axe handle, or other similar device, depending on the OD of the connection. The end of the tool shall be shaped to the face of the seal ring squarely (metallic tools are not acceptable). Leverage the tool against the face of the box to apply pressure to the face of the seal ring. Seal rings installed in the seal ring grooves shall not protrude beyond the internal diameter of the coupling or the lining. This shall be verified with a straight edge placed on the internal diameter. If the seal ring pops out of the coupling internal diameter, the seal ring size and seal ring groove dimensions. The seal rings should be installed shortly before the pipe´s running. Seal rings and pipes should be aproximately at the same temperature before installation.
Pipes Lifting from Rack to Rig Floor During the transportation to the rig floor, the thread protectors must be kept installed. For CRA materials, the use of a pick-up/lay-down equipment with travelling basket coated with rubber or with other soft materials is requested. Metal to metal is not acceptable for CRA materials. For standard materials, load and unload using certified textile slings. Single t elevators are recommended for all materials. On the rig floor, the pipe string shall be sustained by a device that must not leave incisions or dents on the external surface of the pipe.
Running Manual
9
Running Operations on the Rig Floor
Thread Compound Application
While the pipe is in the travel basket or laid on the "V" door, remove the thread protector of the box/coupling, wipe with a clean cloth the box/coupling or blow it with a jet of compressed air and apply the proper amount of thread compound as per pipe manufacturer recommendations.
Thread storage compound shall be thoroughly removed from the connection before applying running thread compound.
While the pin is lifted up in vertical position, remove the protector and wipe the thread with a jet of compressed air. Inspect the thread to assure that it has not been damaged and it has been properly cleaned.
Apply an even coat of manufacturer recommended connection thread compound (see Recommended Thread Running Compound) filling the full thread area and covering the seal surface and torque shoulder of pin or box (as per connection manufacturer recommendation). Do not overdope, the thread pattern should still be evident after doping.
Apply the proper amount and type of thread compound as per the pipe manufacturer recommendations. Stab the pin into the box of the previous pipe, make them up and run them into the hole.
Dope
Thread
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Running Manual
Recommended Thread Running Compounds RUNNING THREAD COMPOUND* TYPE
APPROVED TRADE MARK
API Modified
Any certified API modified Thread
Thread Compound
Compound.
Environmentally Safe
Jet-Lube-Enviro-Safe Best-O-Life PTC Total Compound
that quantity of dope does not exceed the maximum specified. Excessive thread dope may affect the connection performance.
Thread Lock Application When thread lock is required, both pin and box connections must be cleaned, dried, and free of contaminants. Apply thread lock compound only on the first two thirds of the pin threads near the pipe end, excluding the seal area of the pin. A uniform coat should be applied, a full 360 degrees.
Shell Malleus 0459 *For other running thread compounds, please consult us.
Keep the dope well mixed, and stir it very well before using. If the compound is too thick because of the low external temperature, it can be warmed up to a maximum of 30°C and mixed up. Never use oil or solvent to dilute the thread compound. Keep the dope container covered in order to avoid contamination from dust, water, or other dangerous elements. Use new brushes with clean and soft bristle; never use metallic brushes or spatulas. Use mustache type brush for box end and plain type bruch for pin end. Apply thread compound in a continuous film all over the surface of threads and seals as per the connection manufacturer recommendations. When automatic dope applicator is used, try to check the dope weight sprayed by collecting it and putting it on a scale. Set up the dope applicator until the minimum weight is reached. When a brush is used, weigh the minimum requested quantity of dope with a scale, to have an idea of the dope volume. Special care should be taken to make sure
Then, apply thread compound to the internal seal of the box, covering 360 degrees. The connection shall be made-up as soon as possible after the thread lock and thread compound have been applied. A torque in excess of the maximum make-up torque may be required to shoulder the connections.
Stabbing Stabbing and initial thread engagement is the most critical aspect of running connections. A stabbing guide shall be used on the pipe box thread to prevent damage to thread and seal surfaces. The pipe must be properly positioned and under complete control before stabbing is conducted. The pipe must be in true vertical alignment over the box. Movement or sway of the pipe should be limited to the minimum extent possible. Personnel on the rig floor and the stabbing board should always control stability and movement of the pipe. Only after the pipe is stabilized and properly positioned, lower the pipe slowly to avoid thread damage. Once the face of the pin is even with the face of the box, the pin connection should be lowered very slowly into the box. This process will allow the stab flank of the pin threads to align with the flank threads of the box and reduce the possibility of misstabbing, or cross threading.
Running Manual
11
Hydraulic Tong Position
Backup Tong Position Yes
No
Align the pipe with the coupling axis
The stabbing operation is particularly critical with high alloy steels that have a tendency to gall.
Thread Engagement Remove stabbing guide after stabbing. Then rotate the pipe by hand or manual wrench for a couple of turns. If the weight of the pipe prohibits turning by hand, turn it very slowly with tongs (connection should be free running without torque required) to ensure proper thread engagement. Crossthreading and misalignment may be corrected now. The stabber must not rock the pipe during initial stab or make-up. In case of a misstab, rotating the connection counterclockwise 1/4 to 1/2 turns will correct the misalignment and give proper thread engagement. Re make-up following the previous indications. When making up corrosion resistant alloys (CRA) pipes, strap wrenches should be used after stabbing to make the pin up to the hand tight position or at minimum until a secure thread start has been achieved.
Connection Make-up Power tongs are required. Pipe wrenches, rig tongs or spinning chain make-up are not recommended. A back-up tong may be required until sufficient string weight is developed to prevent the t from turning in the slips. Set the power tong and the back-up tong as close as possible to prevent bending during make-up. The back-up tong should be of a sufficient width to prevent crushing the pipe body. Do not set the backup tong over the box threads. Do not latch the elevators on the pipe until the connection is made-up completely. During power make-up operations, the torque shall be continuously monitored. The usage of Torque vs Turns make-up
12
Running Manual
monitoring system with a valid calibration is requested. The accuracy of turn measurement shall be higher than 1/100 of a turn. A computer display is required to monitor the make-up, and shall be capable of printing hard copies of make-up graphs to be kept on file. A make-up torque graph shall be generated for every connection. In the event a graph is not produced or is lost, the connection shall be considered as rejected. When combining different weights (i.e. 5” x 15 lb/ft with 5” x 18 lb/ft) or different grades (i.e. L80 and P110), use the torque corresponding to the lightest weight and the lowest grade. Before starting the running, the equipment must be set up with the following values provided by the connection manufacturer: • • • • • •
Minimum make-up torque Optimum make-up torque Maximum make-up torque Minimum shoulder torque Maximum shoulder torque Reference torque
The initial recommended value for the reference torque is 5% of the minimum recommended torque. While running, the reference torque value shall be adjusted to have 1.0 to 1.5 turn in the display, but it shall remain between 2% to 10% of the minimum recommended torque.
Make-up Speed After stabbing, the first 1 or 2 turns must be performed at low speed to assure proper made-up. Then a higher rotation speed can be applied, and at the last 1 or 2 turns, the speed must be reduced again to a low value.
Running Pipes with Automated Rigs When the strings are run by means of automated rigs, the running procedure varies due to the lack of people operating around the rotary area. Tongs are remotely operated from a safe distance from the working area. Besides the pre-running operations (thread cleaning, drifting, visual inspection, seal ring installation, pipe length measurement), the thread compound (or thread lock) must be applied while ts are on the racks.
After that, the arm of the automatic equipment will pick each t up and it will deposit them on the tray to be transported to the rotary area. There is no need for performing any manual operation from this point, as the officer in charge of driving the automatic equipment will position the pipe in a vertical way and will make-up the connection according to the desired rotary speed and torque value.
Make-up Torque Curve Pattern TYPICAL MAKE UP CURVE GENERATED FOR EACH T
TORQUE
MAXIMUM MAKE UP TORQUE OPTIMUM MAKE UP TORQUE MINIMUM MAKE UP TORQUE
Final Torque
MAXIMUM SHOULDER TORQUE
Shoulder Torque Thread Interference
Seal Interference MINIMUM SHOULDER TORQUE REFERENCE TORQUE
TURNS
Running Manual
13
Make-up Acceptance Criteria The make-up shall be accepted whenever the curve resulting from the make-up operation adjusts to the patterns shown below:
TYPICAL CURVE
TORQUE
MAXIMUM MAKE UP TORQUE Final Torque MINIMUM MAKE UP TORQUE
MAXIMUM SHOULDER TORQUE
Shoulder Torque Ok MINIMUM SHOULDER TORQUE REFERENCE TORQUE
TURNS
CURVE WITH SLIGHT OSCILATIONS
TORQUE
MAXIMUM MAKE UP TORQUE MINIMUM MAKE UP TORQUE
MAXIMUM SHOULDER TORQUE
Shoulder Torque Ok MINIMUM SHOULDER TORQUE REFERENCE TORQUE
TURNS
Slight oscilations in thread interference length are acceptable.
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Running Manual
Make-up Rejection Criteria Make-up Torque Under Minimum or Over Maximum Specified Value
TORQUE
MAXIMUM MAKE UP TORQUE OPTIMUM MAKE UP TORQUE
If the minimum specified make-up torque is not reached, or the maximum specified make-up torque is exceeded, the the connection shall be broken out, cleaned, inspected and if it is not damaged, redoped and re-madeup.
MINIMUM MAKE UP TORQUE MAXIMUM SHOULDER TORQUE
Shoulder Torque
MINIMUM SHOULDER TORQUE
REFERENCE TORQUE
TURN
Torque Shoulder not Defined
• • • • •
Possible reasons Misalignment between pin and box Threads not clean Wrong torque Not enough thread compound Torque cell not properly calibrated
Consequences • Risk of leaking • Risk of accidental unscrewing
MAXIMUM MAKE UP TORQUE TORQUE
There is high thread/seal interference before shoulders get in touch.
OPTIMUM MAKE UP TORQUE MINIMUM MAKE UP TORQUE MAXIMUM SHOULDER TORQUE
MINIMUM SHOULDER TORQUE
REFERENCE TORQUE
TURN
The connection shall be broken out, cleaned, inspected, and if it is not damaged, redoped and re-madeup.
Running Manual
15
Torque Shoulder Below or Above the Specified Window There is low or high thread/seal interference.
TORQUE
MAXIMUM MAKE UP TORQUE OPTIMUM MAKE UP TORQUE MINIMUM MAKE UP TORQUE MAXIMUM SHOULDER TORQUE
Possible reasons • Wrong torque • Wrong thread compound • Torque cell not properly calibrated
High Shoulder Torque
MINIMUM SHOULDER TORQUE
Consequences • Risk of leaking • Risk of accidental unscrewing
Low Shoulder Torque REFERENCE TORQUE
TURN
The connection shall be broken out, cleaned, inspected, and if there is no damage, redoped and re-madeup.
Connection’s Plastic Deformation This may happen when the final torque exceeds the connection yield torque. MAXIMUM MAKE UP TORQUE TORQUE
The connection shall be broken out and the pin and box connection shall be rejected and marked accordingly.
OPTIMUM MAKE UP TORQUE MINIMUM MAKE UP TORQUE MAXIMUM SHOULDER TORQUE
MINIMUM SHOULDER TORQUE
REFERENCE TORQUE
TURN
Aborted Make-up MAXIMUM MAKE UP TORQUE OPTIMUM MAKE UP TORQUE
TORQUE
Make-up process shall not be interrupted before reaching the minimum make-up torque value.
MINIMUM MAKE UP TORQUE
The connection shall be broken out, cleaned, inspected, and if there is no damage, redoped and re-madeup.
MAXIMUM SHOULDER TORQUE Aborted
Possible Result if not Aborted
MINIMUM SHOULDER TORQUE
REFERENCE TORQUE
TURN
16
Running Manual
General Note Connections that do not produce an acceptable graph within three make-ups shall be rejected and identified accordingly. Connections that show visible damage and that can not be field repaired shall be rejected and identified accordingly.
Severe Deviations Prior to Shouldering
MAXIMUM MAKE UP TORQUE MINIMUM MAKE UP TORQUE Hump
MAXIMUM MAKE UP TORQUE OPTIMUM MAKE UP TORQUE
TORQUE
TORQUE
OPTIMUM MAKE UP TORQUE
MINIMUM MAKE UP TORQUE
MAXIMUM SHOULDER TORQUE
MAXIMUM SHOULDER TORQUE
MINIMUM SHOULDER TORQUE
MINIMUM SHOULDER TORQUE
REFERENCE TORQUE
REFERENCE TORQUE
TURN
TURN
Possible cause: excesive dope amount or dope contamination.
Possible cause: galling or crossthread.
If the maximum hump torque is higher than the maximum shoulder torque, the connection shall be broken out, cleaned, inspected and if it is not damaged, redoped and remade-up.
Tong or Backup Dies Slipping on Pipe Body
TORQUE
MAXIMUM MAKE UP TORQUE OPTIMUM MAKE UP TORQUE MINIMUM MAKE UP TORQUE
Possible reasons • Non-suitable dies on tong or backup • Dirty or worn dies • Hydraulic pressure in backup too low
MAXIMUM SHOULDER TORQUE
Jaws Slip MINIMUM SHOULDER TORQUE
Possible consequences • Damage on pipe body • Wrong diagrams even with correct make-up
REFERENCE TORQUE
TURN
The connection shall be broken out, cleaned, inspected, and if there is no damage, redoped and re-madeup.
Possible cause: dies slipping.
Running Manual
17
Visual Inspection after Make-up Subsequent to each make-up, the area of the pipe/coupling that was gripped by the power tongs/back-up device, as well as the slip area, shall be visually inspected to determine if the pipe/coupling has been damaged. lf there are excessive tong gouges on either the pipe or couplings, the gouges shall be evaluated in accordance with API Spec 5CT (see table).
PERMISSIBLE DEPTH OF IMPERFECTIONS IN COUPLINGS (API 5CT) DIAMETER PRODUCTS & SIZES
Tubing Smaller than 3 1/2” 3 1/2” to 4 1/2" Smaller than 6 5/8” Casing 6 5/8” to 7 5/8” Larger than 7 5/8”
G1, G2 (EXCEPT C90 AND T95) & G3 PITS AND ROUNDED MARKS
G2 (C90 AND T95) & G4
GRIP MARKS AND SHARP PATTERN
ALL
in.
mm.
in.
mm.
in.
mm.
0.030 0.045 0.035
0.76 1.14 0.89
0.025 0.030 0.030
0.64 0.76 0.76
0.030 0.035 0.030
0.76 0.89 0.76
0.045 0.060
1.14 1.52
0.040 0.040
1.02 1.02
0.035 0.035
0.89 0.89
G1: All casing and tubing in Grades H, J, K and N. G2: All casing and tubing in Grades C, L, M and T. G3: All casing and tubing in Grade P. G4: All casing in Grade Q.
Tubular Rig Returns On those pipes that are not used or returned to stock, al connections should be washed and dried to remove any corrosive contaminants, then greased and clean protectors installed. No connections should be left witohut storage dope and protectors installed. Pipes´ stock should be periodically inspected every 6-8 months in places with gentle weather and more often in places with extreme weather conditions.
18
Running Manual
Connection Break-out To break out the Tenaris family of connections, the same equipment used to make them up will be required.
be stopped before additional turning of the connection is continued.
If string has been in service for some time, the break-out torque will likely be higher than the torque required to makeup the connections.
Maintain a steady, controlled speed until the pin jumps inside the box. A single t elevator is recommended to reduce misalignment during the lifting process. A weight compensator is recommended to be used to reduce thread galling during break-out.
For coupled connections, the back-up tong should always be set on the coupling central area during breaking-out, so it is necessary to prepare the back-up tong die for the coupling size. Hammering the cupling or connection is not allowed.
Stop rotation immediately when the pin jumps inside the box. A stabbing guide shall be used prior to lifting the pin out of the box. The pin must be carefully lifted out of the box to avoid damage. This is critical on heavy weight pipe or when pulling double or triple stands. Remove the power tong before lifting the pin out of the box. Do not lift the exposed pin threads through the tong. Before moving the pipe further, protect the threads by installing a clean, dry thread protector or lift plug as appropriate. For flush connections, the use of safety clamps is highly recommended.
Backup Tong Position During Break-out
Inspection Once the connection is broken, a brief inspection of seal and threads of both pin and box should be conducted. All connections should be broken out and rotated out in low gear only. To break-out the connections, unlatch the elevators before breakout. Locate the connection to be broken out at a comfortable working height above the slips. Set the power tong and the backup tong or slips as close as possible to prevent bending during breakout. Maintain vertical alignment and control of pipe. This is accomplished by a man on the stabbing board. Slowly apply the torque required to break the connection. (Never use a hammer or other hard object to beat on a connection. The resultant damage could lead to a failure.) Depending on the torque required, the upper end of the pipe may start moving. Pipe movement shall
Particular attention must be paid to: • • • • •
Seals for evidence of galling Threads for evidence of galling Pipe for damage caused by power tong or back-up tong dies Pipe for damage caused by elevator or slip dies Any foreign material in the threads or in the torque shoulder/seal area of the box member
Re-Running To re-run a string of Tenaris Connections, the same procedure as in the initial running should be followed.
Running Manual
19
Running and Pulling General Recommendations - Summary
Running
Pulling
• Remove thread protectors from pin and coupling ends. • Clean the connection with a non-metallic bristle brush and steam or a quick drying solvent type cleaner (without chlorine). • Clean and dry thread protectors. Reject damaged protectors. • Make sure that the internal surface of the pipes is clean and free from foreign material. • Check and clean (by air jet) inside the tubulars to eliminate any foreign material. • drift from the coupling or box end to the pin end avoiding damages on threads and shoulders. • Tubulars that do not the drift mandrel shall be marked with a reject paint band and laid aside. • For CRA and coated material, use a non-metallic drift or a drift coated with plastic or Teflon. • Measure the Total Length of each piece of casing / tubing / accessory. • Calculate the Effective Length of each t by deducting the Make-up Loss from the Total Length. • Visually inspect the connection to assure they are:
• Use of weight compensator system is requested, specially in the case of CRA grades. • For coupled connections break-out, the back-up tong shall be set on the coupling middle position. • The break-out torque will likely be higher than the torque required to make up the connections. • All connections should be broken out and rotated out in low gear only. • Never use a hammer or other hard object to beat on a connection. • Maintain a steady, controlled speed until the pin jumps inside the coupling (avoid bumping). • Stop rotation immediately when the pin jumps inside the coupling. • A stabbing guide shall be used prior to lifting the pin out of the coupling. • The pin must be carefully lifted out of the box avoiding to damage it. • Before moving the pipe further, protect the threads by installing a clean and dry thread protector. • Once the connection is broken out, a brief visual inspection of both pin and coupling should be conducted. Particular attention must be paid to:
- Free from dust due to a long and/or incorrect storage. - Free from handling and transport damages. - Free from burrs or wear. • Never attempt to repair the seal area of the connections. • Slight repairs can be made by # 400 emery cloth or file only on the threads or on the shoulder area. • After repairing, threads must be cleaned again and dried. • During pipe moving to the rig floor, thread protectors must be kept installed. • Use of weight compensator system is requested, specially in the case of CRA grades.
- Threads for evidence of galling. - Pipe body for damages caused by power tong, backup tong, elevator or slip dies. - Any foreign material in the threads or in the torque shoulder of the coupling. • If the string is pulled out in stands, pin thread protectors should be on straight and tight. • Stands should be properly tied with a band to prevent bending.
Note: this section does not replace the Tenaris Running Manual. It shall be used together with it.
20
Running Manual
Specific Guidelines TenarisBlue™ THREAD COMPOUND RECOMMENDED AMOUNT SIZE OD in.
ANY RECOMMENDED DOPE TYPE cu. cm min.
2 3/8 2 7/8 3 1/2 4 4 1/2 5 5 1/2 6 6 5/8 7 7 5/8 8 5/8 9 5/8 9 7/8 10 3/8 10 3/4 11 3/4 13 3/8 13 5/8
API MODIFIED THREAD COMPOUND SPECIFIC GRAVITY = 1,85
cu. cm max.
gr min.
7 9 11 12 14 15 17 27 30 32 34 39 43 44 47 48 53 60 61
9 11 13 15 17 19 20 39 43 45 49 56 62 64 67 70 76 87 88
5 6 7 8 9 10 11 21 23 25 27 30 34 35 36 38 41 47 48
gr max. 13 16 19 22 25 28 31 50 55 58 63 72 80 82 86 89 98 111 113
In order to define running compound by weight, its Specific Gravity shall be used: Running Compound Weight = Volume (cu.cm) x Specific Gravity (gr/cu.cm)
THREAD COMPOUND DISTRIBUTION GRADE
CRA
Condition
Mandatory
Recom.
OTHERS
Pin
30%
30%
0%
Box
70%
70%
100%
Optional
Note: Do not fill the dope pocket with thread compound during its application.
Running Manual
21
Tenaris MS™, MS28™, Tenaris ER™ and Tenaris PJD™ THREAD COMPOUND RECOMMENDED AMOUNT SIZE OD in.
ANY RECOMMENDED DOPE TYPE
API MODIFIED THREAD COMPOUND SPECIFIC GRAVITY = 1.85
cu. cm
gr
5 6 8 9 10 16 18 19 22 23 25 28 31 32 34 35 38 43 44 53 57 61 71 76 91 93
10 12 14 16 18 30 33 36 40 42 46 52 58 59 62 65 71 80 82 98 105 112 131 141 169 172
2 3/8 2 7/8 3 1/2 4 4 1/2 5 5 1/2 6 6 5/8 7 7 5/8 8 5/8 9 5/8 9 7/8 10 3/8 10 3/4 11 3/4 13 3/8 13 5/8 14 15 16 18 5/8 20 24 24 1/2
In order to define running compound by weight, its Specific Gravity shall be used: Running Compound Weight = Volume (cu. cm) x Specific Gravity (gr/cu. cm)
THREAD COMPOUND DISTRIBUTION
22
Running Manual
GRADE
CRA
Condition
Mandatory
Recom.
OTHERS
Pin
30%
30%
0%
Box
70%
70%
100%
Optional
Special Care for Connections with Seal Ring For seal ring models always dope the box area between the seal ring and the shoulder.
Special Care for Connections with Fiber Glass Lining (FGL) When installing seal rings of FGL Models, assure that the seal ring is properly placed in the space between the flange and the coupling. Avoid any misalignment.
Coupling
Pin Lining ERFV Seal Ring
Flange
Apply thread compound only on pin . Do not apply thread compound on the protruding nose of the connection.
Do not apply dope in this area
Never run a pipe with damages in the ERFV lining
Running Manual
23
Special Care for Connections with Corrosion Barrier (CB) Use Shell HTHP 72732 thread compound for make up. The use of compound with different properties may result in low or over torque of the connection, galling and/or leaking. Environmental friendly compounds may be used with Tenaris approval. Apply thread compound only on pin . The use of Molykote (Molybdenum disulphide) is recommended to cover the seal area (Part B). Use the recommended thread compound to cover the threaded area (Part A).
Part B Part A
Note: Thread compound could be used to cover the seal area instead of Molykote, in this case a thin, uniform film covering the seal along the circumference (360°) should be applied. Avoid doping the small protruding nose outside Part B. In this case each made up connection must be checked with a “Teflon drift” to the seal ring has not been damaged during make up. If pipe or coupling coated area is damaged, it must be repaired before running the string. This activity can be performed by the coating company or by authorized and certified personnel of a third part company.
Torque vs. Turns Monitoring System For the making up of the Tenaris ER connection the use of a Torque vs. Turns Monitoring System is not required.
24
Running Manual
Tenaris 3SB™, Tenaris HW™, and Tenaris EL™ THREAD COMPOUND RECOMMENDED AMOUNT SIZE
ANY RECOMMENDED DOPE TYPE
API MODIFIED THREAD COMPOUND SPECIFIC GRAVITY = 1,85
OD
TENARIS 3SBTM
TENARIS HWTM
TENARIS ELTM
in.
cu. cm
cu. cm
cu. cm
2 3/8 2 7/8 3 1/2 4 4 1/2 5 5 1/2 6 6 5/8 7 7 5/8 8 5/8 9 5/8 9 7/8 10 3/8 10 3/4 11 3/4 13 3/8
6 8 10 11 12 16 19 22 24 27 32 38 34
TENARIS 3SBTM
TENARIS HWTM
gr.
gr.
9 11 14 15 17
12 14 18 20 23 30 35 40 45 50 60 70 62
24 27 32 32 38 43 49 54
43 54 65
TENARIS ELTM gr. 17 20 25 28 32
45 50 60 60 70 80 90 100
80 100 120
70
130
In order to define running compound by weight, its Specific Gravity shall be used: Running Compound Weight = Volume (cu. cm) x Specific Gravity (gr/cu. cm)
THREAD COMPOUND DISTRIBUTION GRADE
CRA
Condition
Mandatory
Recom.
OTHERS
Pin
30%
30%
0%
Box
70%
70%
100%
Optional
Note: Special care shall be taken to not over-dope the connection. Over-doping can lead to excessive dope pressure built up and abnormal Torque vs. Turns curves.
Running Manual
25
Sec THREAD COMPOUND RECOMMENDED AMOUNT SIZE OD in.
ANY RECOMMENDED DOPE TYPE cu. cm min.
2 3/8 2 7/8 3 1/2 4 4 1/2 5 5 1/2 6 6 5/8 7 7 5/8 8 5/8 9 5/8 9 7/8 10 3/8 10 3/4 11 3/4 13 3/8 13 5/8
API MODIFIED THREAD COMPOUND SPECIFIC GRAVITY = 1,85
cu. cm max.
gr min.
14 17 21 24 27 35 38 42 46 49 54 61 68 69 72 75 82 94 95
18 21 26 30 33 46 51 56 61 65 71 80 9 91 96 99 109 124 126
10 11 14 16 18 25 28 30 33 35 38 43 48 49 52 54 59 67 68
gr max. 26 32 39 44 50 65 71 78 86 91 99 112 125 128 134 139 152 173 176
In order to define running compound by weight, its Specific Gravity shall be used: Running Compound Weight = Volume (cu. cm) x Specific Gravity (gr/cu. cm)
THREAD COMPOUND DISTRIBUTION GRADE
CRA
Condition
OTHERS
Mandatory
Recom.
Pin
30%
30%
Optional 0%
Box
70%
70%
100%
Note: Special care shall be taken to not over-dope the connection. Over-doping can lead to excessive dope pressure built up and abnormal Torque vs. Turns curves.
Delta Torque Definition Delta Torque % =
Final Torque – Shoulder Torque Final Torque
x 100
Tenaris makes available this Manual for informational purposes only and in no way assumes responsibility or liability for any loss, damage, or injury resulting from the use of information and data herein. The technical information contained herein should not be construed as a recommendation. Although reasonable efforts have been made to maintain the accuracy and reliability of its content you should only rely on its conclusions at your own risk. You should not rely on descriptive product data or other information in this Manual without professional engineering advice.
26
Running Manual
Managing Director Jim Aivalis [email protected] www.tenarisconnections.com
ARGENTINA Buenos Aires Rolando Lange [email protected] (86) 10 6437 6744 tel (86) 10 6437 6746 fax
COLOMBIA Bogota Sergio Chamorro [email protected] (603) 216 48115 tel (603) 216 48117 fax
www.tenarisconnections.com Version 02 / April 2004. ©Tenaris. All rights reserved.
MEXICO Veracruz Luis Conde [email protected] (971) 4 2725 394 tel (971) 4 2725 392 fax
UK Aberdeen John Mennie [email protected] (58) 212 902 3969 tel (58) 212 902 3937 fax
Tenaris Marketing Communications [email protected]
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