6. INSTALLATION AND OPERATING PROCEDURES
6.8 Complete Downhole Work per Operator Procedures
6.9.1 Equipment Required
Description Part Number Qty.
Bore Protector Run/Retrieval Tool 2027776-01 1 6.9.2 Prepare Bore Protector Running / Retrieval Tool
(1) Ensure that the torque pins (item 2) are removed.
(2) Extend the spring loaded retrieving dogs by rotating the four cams to the OUT position.
6.9.3 Retrieve Bore Protector
(1) Verify that the SCM valve is OPEN and AWV is CLOSED. Vent AMON/SCM line via IWOCS.
(2) Make up the bore protector running tool to the drill string and run in to the hole.
(3) Land the tool on the bore protector and set off 5,000 lbs.
(4) Equalize pressure on the SCM line with the completion fluid. Pressure may be increased slowly to assist in removing the bore protector.
(5) Overpull 25,000 lbs. to shear the 04 (four) pins in the bore protector.
Note: The maximum theoretical load to shear the 04 (four) pins is 45,000Lbs. The secondary release overpull has to be as high as 116,000 Lbs to shear the 06 (six) pins.
(6) Retrieve the bore protector and close the SCM valve.
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6.10 Tubing Hanger Installation 6.10.1 Required Equipment
A. Cameron Supplied Equipment
Description Part Number Qty.
Tubing Hanger (TH) 2216525-01 1
5.25" SSR Wireline Plug 2156076-01 1 TH Handling/Test Tool (THHTT) 2142721-01 1 TOOLS FOR WIRELINE PLUG
Running Tool 2748031-01 1
Pulling Tool (4” GS) 2748035-01 1
Isolation Sleeve 2748152-01 1
Protection Sleeve (short) 2730423 1
GS Pull/Run Tool (5” GS) 2748036-01 1
Wireline Centralizer 2748156-01 1
TH Running Tool (THRT) 2141700-01 1 (w/ Production Stab Mounted) 2155994-02 1 THRT Handling/Test Tool (THRTT) 2142736-01 1 THRT Pressure Test Skid/Stand 2142094-01 1
Stand for THRT 2142930-01 1
Stand for TH 2142851-01 1
Redress Tools for TH Control Stabs 2142858-01 1
Pup Joint Cap N/A 1
B. Customer Supplied Equipment
4-1/2” IF Lift Cap N/A 1
C. Spares (TH and Plug)
Verify availability of spare parts listed in Section 14.
D. Controls
Description Part Number Qty.
Workover Utility Reel (UTP) 1
Adapter joint, slick joint, and 1
Subsea Test Tree (SSTT)
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6.10.2 Run Tubing per Operator Procedures
6.10.3 Prepare the Tubing Hanger Running Assembly for Installation
NOTE: The following procedures are written for the two different types of SSTT. The Tubing Hanger Running Tool Latch Assist function may be open to the riser (in the case of a direct hydraulic multi-line umbilical system) or ganged together with the Latch function (in the case of an electro-hydraulic system). The procedures refer to ‘LATCH’ only and are applicable to either type of SSTT.
NOTE: Before the tubing string is run, make up the tubing hanger running tool, adapter joint, slick joint, and safety tree assembly. Flush the line using the THRT stand and test the production bore connections and the control line connections using the THRT test skid. This is normally done at System Integration Testing with the SSTT.
-JHA- Perform JHA for handling of the THRT / SSTT.
A. Make up SSTT to THRT assembly if not previously made up (normally done onshore prior to shipping).
(1) Inspect control stabs provided with SSTT. Replace seals as required. Grease seals with control fluid compatible grease (ref Oceanic ACL).
(2) WARNING: When making up the THRT to the SSTT, remove the vent stab at the top of the THRT.
(3) Test SSTT and Control System per SSTT supplier procedures.
(4) Verify that the THRT / SSTT has been drift tested.
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B. Flushing THRT (normally done onshore)
(1) Remove the flushing port plugs (1/4” NPT) from the THRT piston.
(2) Flush all THRT hydraulic functions to remove any trapped air.
(3) Re-install flushing port plugs into THRT.
C. Function & Flush THRT with Optional Pressure Test
(1) Inspect the Lock Monitor poppet assembly on the side of the THRT and ensure proper function.
(2) Function the THRT using the SSTT and control system.
(1) Function the Tubing Hanger Lock / Unlock and THRT Latch / Unlatch a minimum of three times each.
(2) Each function should be operated without pressure on any other function.
(3) Finish with the tool in the Unlatched and Locked position.
(3) The THRT functions may be pressure tested as follows (5 minute hold period on each function):
LATCH or LATCH/LATCH ASSIST 3,000 psi
UNLOCK 3,000 psi
LOCK 3,000 psi
LOCK MONITOR / LOCK 3,000 psi
SOFT LAND 2,500 psi
PRODUCTION BORE (Tool must be in skid) 10,000 psi max.
UNLATCH 3,000 psi
(4) To verify the cleanliness level of the downhole lines through the SSTT/THRT, install the THRT into the THRT Test Skid.
NOTE: Flushing is recommended when the downhole control lines are made up to the hanger prior to installing the THRT/SSTT to the Tubing Hanger.
(1) Vent the THRT functions and ensure the THRT is in the Unlatched and Locked position.
(2) Align the THRT key with the skid slot and lower the assembly into the THRT test skid.
(3) Latch the THRT to the test skid.
(4) A pressure test up to 10,000 psi may be done on the downhole lines to test the stab connections.
(5) Fluid samples are taken from the side ports of the THRT test skid. Flush through the downhole lines until the proper cleanliness levels are obtained.
(6) Remove the SSTT/THRT from the skid and return the tool to the Unlatched and Locked position.
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6.10.4 Prepare the Tubing Hanger for Installation
(1) While on the working deck of the rig prior to running tubing, suspend the tubing hanger in the tubing hanger stand over a hole in the rig deck.
(2) Check the following items:
A. Verify the control lines were flushed as required.
B. If equipped, verify “RLH” seals are in place.
C. Inspect all seals. Replace if necessary.
D. Inspect the wireline plug sealing area.
E. Verify the pup joint was tested as required.
F. Tubing Hanger is in the "Unlock" position.
G. Verify that the wireline isolation sleeve is installed and tested.
Installation is per SSR International procedures (Section 13).
NOTE: Verify the wireline isolation sleeve lock ring is installed right side up. The lock ring should be below flush and tight fitting around the sleeve.
-JHA- Perform JHA for installation of the THHTT.
(3) Lubricate the THHTT seals and install the THHTT in the tubing hanger.
i. Make up a 4-1/2 API IFTJ lift cap to elevator sub.
ii. Back up the three short jack screws (item 11) until they are flush with the bottom of the actuator ring. Verify hanger is Unlocked.
iii. Carefully align the Control Stabs and anti-rotation key with the tubing hanger seal pockets and slot. Land the THHTT in the tubing hanger on the handling ring (item 8) of the TH assembly.
iv. Screw down the three long screws (item 10) until tight to actuate the latch ring in the hanger actuator ring groove.
v. The THHTT latch ring is visible through the two holes in the hanger vi. Ensure that the Autoclave blind plugs are installed on the bottom of
TH. Using the tubing hanger handling and test tool, test each downhole line to 10,000 psig for 5 minutes (this test is to verify TH pressure integrity before it is on rig floor).
NOTE: this test is optional since the lines and connections will be tested again with the THRT.
(4) Flush the downhole control lines through the THHTT to the appropriate cleanliness levels.
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6.10.5 Make up Tubing Hanger to Tubing String
-JHA- Perform JHA for handling and moving the tubing hanger to the drill floor.
(1) If available, the split landing bowl clamp may be installed to protect the hanger seals during transport.
(2) Run the tubing completion and support the final joint in the tubing slips.
(3) The tubing hanger is transported to the drill floor with the THHTT installed. The tubing hanger is lifted horizontally through the V-door with one strap placed on the end of the tubing hanger pup joint and the other connected to the lift cap.
NOTE: Ensure that the pup joint protector cap or saver sub is installed to avoid damaging the pup joint threads during handling.
(4) Make up the tubing hanger pup joint to the production tubing string.
(5) Connect the drill pipe elevator to the THHTT and pick up weight, lift the string to remove the tubing slips and record the completion weight.
Weight of Tubing and Tubing Hanger Completion Assembly (lbs.)
(6) Test the tubing string as appropriate per Operator procedures.
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6.10.6 Install THRT and Make up Control Lines to Tubing Hanger
The following two procedures (Procedure A and Procedure B) are used to accommodate two different options for making up the downhole lines and installing the THRT/SSTT to the tubing hanger. The procedural order should be followed for the particular option.
Option 1: A split landing bowl is not used OR it is preferred to make up the downhole lines with the THRT/SSTT in place.
Follow Procedure A then Procedure B
Option 2: A split landing bowl is used and the downhole lines are to be made up prior to installing the THRT/SSTT.
Follow Procedure B then Procedure A
Procedure A – Make up the THRT/SSTT to the Tubing Hanger
(1) Land the tubing hanger pup joint in the tubing slips. If a landing bowl is available, place the master bushing over the rotary table and land the tubing hanger on the split landing bowl clamp on the master bushing.
Set off entire string weight before removing the THHTT.
(2) Remove the THHTT from the tubing hanger.
a. Back up the (3) actuator energizer screws (item 10) approx. 1 inch and screw in the (3) jack screws to unlatch the THHTT from the TH.
b. Remove the tool from the tubing hanger and store away.
(3) Inspect the TH production and control line stab pockets for debris and wipe clean.
-JHA- Perform JHA for handling and installation of the THRT / SSTT.
(4) Pick up the THRT and SSTT assembly and hook up umbilical jumper to the SSTT. Refer to the SSTT supplier’s procedure.
FUNCTION THRT SUBSEA TREE
TH LOCK 13
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(5) Lift the running assembly to a convenient working level and remove the stab protector ring. Inspect all stabs and o-rings and coat them with control fluid or Oceanic ACL to prevent contamination.
(6) Ensure the running tool/SSTT functions have been flushed and tested and that the THRT is in the Unlatched and Locked positions.
(7) Ensure SSTT has been tested per the SSTT supplier’s procedures.
(8) Ensure downhole lines communications with the correct ports have been verified.
(9) Isolate TH Lock Monitor. Inspect the THRT’s Lock Monitor poppet.
(10) Remove the TH shear pin cartridges from the side of the Tubing Hanger lock actuator ring.
(11) Vent the THRT Vent function.
(12) Lock in 3,000 psi on the Lock and Unlatch THRT functions.
(13) Move the THRT/SSTT assembly directly above the Tubing Hanger.
Align the THRT key with the slot in the TH. Lower the running
assembly onto the TH and set off enough weight (10,000 to 15,000 lbs.) to make up o-rings and push down the hanger actuator into the locked position. The TH lock ring will expand.
(14) Vent the TH Lock and Unlock functions.
WARNING: Failure to vent the Lock function will prevent proper latching of the THRT to the TH.
(15) With 10,000 lbs weight on the hanger, function THRT Latch with 3,000 psig, and observe the latch ring move approximately 1.5 inches down.
Observe engagement of the THRT lock dogs through the holes in the TH lock actuator ring.
CAUTION: Maintain and monitor pressure (3,000 psi) on the
“Latch” function throughout this running procedure until hanger is landed and locked into the spool body.
(16) Function TH Unlock. Verify movement of the TH actuator ring and the THRT outer sleeve moves upward allowing the TH lock ring to contract.
(17) Function TH Lock. Verify the TH lock ring expands properly. Verify pressure increase on Lock Monitor line. Open the isolated Lock
Monitor line to purge air and check returns. Vent the Lock function and verify the Lock Monitor gage reads 0 psig. Isolate the Lock Monitor.
CAUTION: The Lock Monitor should remain isolated during the complete operation of the tubing hanger running sequence. Pressure build up will be monitored on the Lock Monitor gage.
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(18) Apply operator specified pressure to a maximum of 8,000 psig down the THRT Vent function. Hold pressure for 5 minutes, bleed to 0 psig and repeat. This will test the following:
a. THRT to TH interface connection (properly latched)
b. Pressure integrity of the production stabs, downhole control line stabs, and o-rings on the THRT.
c. THRT to SSTT interface (vent stab is removed)
CAUTION: Do not apply pressure to “Vent” function in any situation where tubing weight is suspended by THRT.
(19) Bleed pressure from the THRT Vent function. Keep vented through remainder of installation.
(20) Pressure test each downhole line through the SSTT by applying
customer specified running pressure and hold for 5 minutes. Ensure no leakage.
(21) Function TH Unlock. Verify upward movement of the TH actuator ring and the THRT outer sleeve. Verify TH lock ring contracts until flush with the OD of the TH.
(22) Ensure any trapped air is removed from the soft land system.
a. With the soft landing piston in the fully retracted position (collapsed mode) remove the NPT plug on the side of the soft landing piston to allow leakage to occur.
b. Slowly apply pressure to the soft landing piston to purge air through the NPT plug. DO NOT stroke the soft landing piston.
c. Cut off pressure and with fluid still flowing from the NPT port, reinstall the NPT plug.
(23) Apply 2,500 psig to TH soft landing piston and lock in pressure. Verify piston strokes downward approximately 4.0 inches. Hold for 5 minutes.
Verify no leakage is occurring around the NPT plug or any other visible area on the THRT. Then, reduce pressure to approximately 1000 psig plus completion fluid differential head at depth, 3000 psig maximum.
a. Example: Density (lb/cu.in.)=fluid density (Sp.Gr) x .0361 b. Differential = fluid density x Water Depth (ft) x 12
c. Soft land pressure = Riser Differential – Control Differential + 1000 d. Example: If riser fluid is 1.33 Sp.Gr., control fluid is 1.07 Sp.Gr.,
and water depth is 1000 ft, soft land pressure is:
(1.33 -1.07) x .0361 x (1000 x 12) + 1000 = 1113 psi
(24) Install the TH shear cartridges in the Tubing Hanger lock actuator ring.
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Procedure B – Make Up the Downhole Control Lines to the Tubing Hanger
-JHA- Perform JHA for lifting of the completion and control line terminations.
(1) Pick up the Tubing Hanger at a level to view the bottom of the TH.
(2) Place (2) 7/8-9 UNC lifting eyes into the side of the helix. Remove the (4) torque screws which hold the orientation helix on the hanger body.
Lower the helix from the tubing hanger.
(3) Feed the control lines through the helix. Each control line should be wrapped around the tubing per customer's specification to allow for extra play in the control lines in case of re-termination of the lines.
(4) Remove the plugs from the tubing connections in the bottom of hanger.
(5) Flow through each downhole line and take fluid samples to verify conformance to the required NAS cleanliness levels.
(6) Cut and prep each downhole control line and terminate each line at the tubing hanger bulkhead per customer instruction. Refer to Figure below for pictorial representation of the tubing hanger prep location.
PORT FUNCTION CONNECTION
A NOT APPLICABLE NOT APPLICABLE
B SV1 9/16” MED. PRESS. AUTOCLAVE
C SV2 9/16” MED. PRESS. AUTOCLAVE
D NOT APPLICABLE NOT APPLICABLE
E NOT APPLICABLE NOT APPLICABLE
F NOT APPLICABLE NOT APPLICABLE
G NOT APPLICABLE NOT APPLICABLE
ELECTRIC NOT APPLICABLE NOT APPLICABLE
(7) Pressure test each line by applying pressure per customer specification and verify there are no leaks at the bottom of the tubing hanger per customer's requirements for downhole equipment. If applicable, note that F and G are ported together in the TH circuit ring.
(8) For hangers with electrical lines, terminate the electrical line at the underside of the Tubing Hanger and perform electrical tests as required.
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(9) Reattach the helix to the bottom of the tubing hanger with the (4) torque screws. Ensure there is no contact between the helix and the control lines. Remove helix lifting eyes.
6.10.7 Run and Test the Tubing Hanger
(1) When running the tubing hanger, the control lines should be set as follows:
a. Isolation pressure on all downhole lines as specified by the customer.
b. Verify pressure is locked in on the THRT soft landing piston.
NOTE: The TH Soft Landing Piston pressure is affected by the difference of the hydrostatic heads of the completion fluid (acting outside of the piston) and the control fluid (acting inside of the piston). Maintain Soft Landing Pressure considering the fluid pressure differential.
CAUTION: Monitor the soft landing piston pressure while running completion down hole. Pressure increases over soft landing pressure (48,000 lbs per 1000 psi) will indicate that the completion has hung up. Soft land pressure must be exceeded to see the pressure build up.
Halt all downward motion immediately and take corrective action.
c. Verify THRT Latch is at 3,000 psig.
d. Verify THRT Unlock is at 3,000 psig.
e. Verify THRT Vent line is vented.
f. Verify THRT Lock Monitor function is isolated.
g. If applicable, verify the Electrical penetrator at the tree is retracted.
h. If applicable, verify any protective covers for the Electrical Connector on the side of the hanger have been removed.
i. Ensure the BOP’s are full open.
j. Verify the spacers in between the running circuit ring and the Tubing Hanger body have been removed.
k. Verify that the TH circuit ring shear pins and Actuator ring shear pin cartridges are installed.
-JHA- Perform JHA for running the completion string.
(2) Pick up the running assembly and TH. Remove the tubing slips and master bushing or the split landing bowl.
(3) Lower the running assembly through the rotary.
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(4) Run the tubing hanger downhole using the completion string. Monitor the THRT functions for pressure changes and take corrective action. Run the completion 45-70 degrees out of position either direction to visually monitor turning due to helix rotation. Rotation may not be visible at large depths. Note the helix capture angle to assist in engaging the helix when landing the hanger.
NOTE: Great care must be taken to run umbilicals at same rate as the running string and ensure they are properly clamped.
(5) Prior to entering the flex joint on the LMRP, land completion tubing in slips.
(6) Engage motion compensator to 20,000 lbs. Check that riser flex joint is less than 1/2 degree and rig heave is 4 ft. max.
Record total string weight (landing riser, safety tree, THRT, TH and tubing, heave, and flex joint angle).
Total Weight of
Completion (lbs) Rig Heave (ft) Estimated Flex Joint Angle (degrees)
(7) Open AMV and AAV to ensure that a hydraulic lock does not occur.
(8) Increase and lock in soft land pressure to 3,000 psig.
(9) Lower the completion assembly slowly until the THRT soft landing piston ‘hard lands’ on the shoulder in the spool body. Hard land the completion assembly with 20,000 lbs. down. Look for rotation of the string to verify orientation helix engagement. If rotation is not seen, the string may be rotated and torque built up to verify position.
CAUTION: Do not set more than 20,000 lbs. down on the soft landing piston during hard land. Maximum capacity of the soft landing sleeve on the THRT is 100,000 lbs.
(10) Bleed down the SCSSV pressure and equalize pressure inside all the downhole control lines to the differential pressure between the
(10) Bleed down the SCSSV pressure and equalize pressure inside all the downhole control lines to the differential pressure between the