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WetPark Way Forward #5 25/09/2024 Land ESPH onto MOBO and Pre-Commission MOBO WP#1 North of ALM-3 Rev 2.0 Page 1 of 9 SECTION OBJECTIVES • Goal Zero Operations. • Install new ESP completion in the MOBO structure • Continue Demob’ng PREPARATION • MB Hub Seal Test done OFFLINE w/ 3,200psi x 15min. TFMC • MIT inspected & latched to ESP Hanger. TFMC • ESP Hanger test flange removed or loosen without seals. TFMC • MOBO Wear Bushing is in the MOBO housing. TFMC • MOBO is hydraulically supplied via Compensated or Test MQC. TFMC • MOBO pipes wall thickness verified, as per TFMC procedure. TFMC • MOBO connector unlocked, MB hub Soft land retracted offline. TFMC • EFLs connected to MOBO SCM on EC1 and EC2 and communications successfully established. TFMC • MOBO gate valves successfully tested. TFMC • Ensure sufficient N2 bottles available on the skid. Halliburton Well Test KEY RISKS MOBO Intervention and Swap Main Ri0sks Risk 3 Fall by working at heights in moonpool area and well test plant Responsible Mitigation Tie off points available in moonpool, appropriate PPE, work baskets available in moonpool. Maintenance Supervisor Risk 3 Inspect, maintain, and repair Fall Protection Equipment; Maintenance Supervisor Risk 5 Unplanned failure of Launching Bridge seafastening to the XT trolley while Caisson is landed. Responsible Mitigation NDE Inspection/Certification Maintenance Supervisor Constant visual inspection and weather forecast monitoring TFMC Risk 6 Fall from heights due to access to ROV panel on the rig moonpool is too high Responsible Mitigation Use moon pool work basket whenever possible TFMC Safety Harness/ Fall protection equipment and tie off points available in moonpool; Inspect, maintenance or repair Fall Protection Equipment; Maintenance Supervisor Risk 7 Plugged Piping causing loss of containment / Oil spill pm deck and personnel injuries Responsible WetPark Way Forward #5 25/09/2024 Land ESPH onto MOBO and Pre-Commission MOBO WP#1 North of ALM-3 Rev 2.0 Page 2 of 9 Mitigation Flushing and pressure testing all lines prior to operation Halliburton Check compliance to TPW standard WSV Risk 8 Removing or Installing EFL from SCM prior to powering down the SCM Responsible Mitigation TFMC operational procedure (check if equipment is energized upon arrival - performed by a person different from the initiating event) TFMC Include a note in JSA and PTW to remember to power down the SCM prior to removing the EFL TFMC/Toolpusher Risk 9 Working at heights - on top of slippery MOBO (when installing wear bushing). Responsible Mitigation Use proper Fall protection PPE - 100% tie off TFMC Address this risk in TBT/JSAs/PTW TFMC Have absorbent pads readily available at moonpool area to deal with residual oil on top of MOBO Top end assembly Maintenance Supervisor Risk 11 Mishandling tools and equipment/ Handling equipment failure Responsible Mitigation Use Lanyards, tool checklists and have a proper housekeeping when working on top of the MOBO or close to the rotary table Third Party Companies Address this risk in TBT/JSAs/PTW Third Party Companies Follow the rig and vendor’s lifting and handling Procedures Third Party Companies Sheaves on the rig floor to have the proper secondary retention equipment installed and to be secured with tuggers Baker/Halliburton Use two-hole covers – one on the rig floor and the other on top of the MOBO Third Party Companies Risk 12 MAMUT/ Bootstrap tools operation, equipment assembly. Awkward lifting. Responsible Mitigation Establish clear communication protocol between TFMC and rig crew and address it in addition to Weather criteria in TBT/JSAs TFMC WetPark Way Forward #5 25/09/2024 Land ESPH onto MOBO and Pre-Commission MOBO WP#1 North of ALM-3 Rev 2.0 Page 3 of 9 Wear proper PPE (high impact gloves, helmets etc) TFMC Risk 13 Fall from heights when working on the MOBO or work basket on ESP hanger Responsible Mitigation Use safety harness and proper fall protection equipment when performing this operation. TFMC Address this risk in TBT/JSAs TFMC DETAILED OPERATIONAL PROCEDURE LAND ESP HANGER ON MOBO 1. P/U MIT stand from pipe rack, run through rotary and land it on ESPH 2. TFMC to go in the rig floor basket and lock MIT with hotstab applying 2000psi. • Record hump pressure: ______psi. 3. PU Completion OFF slips: • Check PU, Slack Off and Neutral weight: i. __________ lbs. ii. __________ lbs. iii. − __________ lbs. 4. Remove the Baker bushing from Rotary Table. 5. RIH ESPH and MIT through rotary table, avoiding damaging ESPH and lines. • Offline: TFMC to Open following valves: GSDV, ISDV, OSDV, CIT5, CIT6, CIT7, CIT 9 and CIT10. • Offline: TFMC to Vent couplers #13 and #7 on SFL MQC 6. Install rig’s split bushing and master bushing. 7. RIH until the ESP Hanger is approximate 2m above the MOBO Housing • Stop all crane operations until the ESP hanger is fully landed on MOBO. 8. Confirm alignment between ESP Hanger key and key slot in the MOBO Housing. • If not aligned, rotate the string CW to align at this point. 9. Manually remove seals protector from ESPH. 10. Manually remove Wear Bushing from MOBO Housing, as per TechnipFMC document #ICP70038733. 11. Confirm string is centralized in the MOBO Housing for landing. WetPark Way Forward #5 25/09/2024 Land ESPH onto MOBO and Pre-Commission MOBO WP#1 North of ALM-3 Rev 2.0 Page 4 of 9 12. Continue RIH until the ESP hanger lands inside Housing. 13. Slack off MIT + 1st stand of drill pipe weight – confirm elevators floating. 14. Visually confirm ESP Hanger has fully landed. 15. Perform a 500psi x 5min test on the upper and lower ESP hanger S-seals to ensure they were NOT damaged during landing operation. • SBMS seal test port shall be vented • No need to chart this test 16. Perform a 100psi x 5min test on Hanger SBMS test port to ensure the SBMS and S-seals NOT damaged during the landing operation. • Upper S-Seal test port shall be vented • Do NOT exceed 100psi, otherwise the ESP Hanger may unseat from the Housing • No need to chart this test 17. Unlatch MIT from ESP Hanger w/ 2,000psi, as per TechnipFMC procedure, PU and set on slips and keep elevator latched. ESP HANGER HOOKUPS 18. Move XT trolley all the way portside • From this point on, offline perform the following: i. POOH MIT and R/B ii. Move Inspection stand to rotary table. iii. P/U MIT stand and position on top of inspection stand iv. TFMC to perform MIT inspection v. R/B MIT stand in setback vi. Remove Baker Reels from the rig floor. vii. Demob Weatherford equipment from rig floor (only after Closing Clamp and one subsea HV Test). 19. TFMC to stop communications w/ SCM and Power off. 20. TFMC to connect ESPI and LS diver mate connectors to the ESPH. 21. TFMC to power the SCM on and restart communications with it. 22. TFMC to perform electrical and communications tests. Refer to the following: a) TechnipFMC document #ICP70038733 Appendix A b) TechnipFMC document #ICP70038733 WetPark Way Forward #5 25/09/2024 Land ESPH onto MOBO and Pre-Commission MOBO WP#1 North of ALM-3 Rev 2.0 Page 5 of 9 23. OneSubsea to connect a test HV Connector to the ESP Hanger, perform electrical test and record results, as per TechnipFMC and Baker ALS Procedures. 24. OneSubsea to connect test HV-EFL to the MOBO IR and continuity. 25. TFMC to R/U MAMUT using gantry crane. 26. TFMC to close MOBO Upper Clamp Connector as per TFMC procedure OPR70035008 (MAMUT). • OFFLINE: i. TFMC to close GSDV, ISDV & OSDV (wait 2.5min between them)ii. TFMC to close CIT 5, CIT 6, CIT 7, CIT 8 and CIT 10 – Keep CIT 9 open iii. TFMC to record gauge pressures prior to N2 pressurization (table at the end of this WF). 27. TFMC to R/D MAMUT using gantry crane. 28. OneSubsea to repeat test of step 24. WetPark Way Forward #5 25/09/2024 Land ESPH onto MOBO and Pre-Commission MOBO WP#1 North of ALM-3 Rev 2.0 Page 6 of 9 PERFORM ESP HANGER INTERFACE TESTS 29. TFMC to perform the following tests: • Test #2 (Lower S-Seals) and Test #3 (SBMS Seal) shall be done together. a) Test #1: Upper S-Seals. I. Apply 1,000 psi increments II. Test Pressure: 3,200psi III. Hold Period: 15min IV. Monitor: SBMS Seal test port and around Clamp Connector V. Acceptance criteria: 3% drop over 1 hour (or ratio) as long as the pressure doesn’t go below nominal test pressure. VI. Do NOT exceed 5% over the nominal test pressure, during pressurization b) Test #2: Lower S-Seals. I. Apply 1,000 psi increments II. Test Pressure: 8,000psi III. Hold Period: 15min IV. Monitor: Outlet and Caisson V. Acceptance criteria: 3% drop over 1 hour (or ratio) as long as the pressure doesn’t go below nominal test pressure. VI. Do NOT exceed 5% over the nominal test pressure, during pressurization In parallel: • Rig Floor o P/U MIT stand, and run through RT. o Set slips and keep elevator on with MIT just below diverter housing. c) Test #3: SBMS Seal. I. Apply 1,000 psi increments II. Test Pressure: 8,000psi III. Hold Period: 15min IV. Monitor: Upper and Lower Seal test ports WetPark Way Forward #5 25/09/2024 Land ESPH onto MOBO and Pre-Commission MOBO WP#1 North of ALM-3 Rev 2.0 Page 7 of 9 V. Acceptance criteria: 3% drop over 1 hour (or ratio) as long as the pressure doesn’t go below nominal test pressure. VI. Do NOT exceed 5% over the nominal test pressure, during pressurization d) Test #4: Blind Flange – NOTE: Offline Perform TBT prior to N2 Pressurization (TFMC, Shell, Halliburton, Subsea) required minimum 4 radios. 1 for Shell in the connex, 1 for the subsea, 1 for TFMC at moonpool and 1 for Halliburton. – Request them in advance and radio-check. I. Install test ports blind flange on ESP Hanger, as per TechnipFMC document #ICP70038733 II. Perform Blind Flange BX gasket external test III. Apply 1,000 psi increments IV. Test Pressure: 3,200psi V. Hold Period: 15min VI. Monitor: Around flange for leaks VII. Acceptance criteria: 3% drop over 1 hour (or ratio) as long as the pressure doesn’t go below nominal test pressure. VIII. Do NOT exceed 5% over the nominal test pressure, during pressurization WetPark Way Forward #5 25/09/2024 Land ESPH onto MOBO and Pre-Commission MOBO WP#1 North of ALM-3 Rev 2.0 Page 8 of 9 PRESSURIZE CAISSON WITH NITROGEN Objective: Pressurize the Caisson to 70 psi to protect pressure rate of change over ESP equipment when starting up the system subsea • Verify personnel involved in this operation have radios to communicate – Halliburton N2, Shell, Driller/Toolpusher and TFMC (connex and moonpool). • At the end, we will leave 70psig (~84.5 psiA) of N2 pressure in the caisson. 30. If not previously accomplished, hook up N2 hoses from rig Halliburton N2 skid into MQC Coupler 13 (CIT 9). 31. If not previously accomplished, close all MOBO valves (OSDV, GSDV, ISDV and CITs) and all Halliburton manifold valves. 32. Confirm CIT9 valve is open. 33. Open IN-01 at N2 skid. 34. Open Halliburton bottles of N2 slowly to maximum 1,500psi at N2 manifold. 35. Monitor pressure readings at P1, P2 and P3 from SCM. 36. Closely monitor gauges and stop injecting once pressures match what has been calculated: Gauge Depth Below ESPH (ft) Actual Pressure psiA bar P1 Pa DPT Pth P2 IPT P3 37. Close CIT 9 valve via SCM. 38. Halliburton to close any open bottles and IN-01 valve at N2 skid. 39. Halliburton bleed off pressure on N2 hoses to zero. 40. TFMC MOBO: a) Ensure OSDV, ISDV and GSDV are closed. b) Ensure CIT5, CIT6, CIT7, CIT8, CIT9, and CIT10 are closed. 41. Rig down N2 hoses/connections from MQC plate and Hall N2 Manifold 42. Ensure needle valves configuration on Compensated MQC are as per below: • NV1 → CLOSED • NV2 / NV3 / NV4 → OPEN WetPark Way Forward #5 25/09/2024 Land ESPH onto MOBO and Pre-Commission MOBO WP#1 North of ALM-3 Rev 2.0 Page 9 of 9 NOTE: By the end of this step, following valves are to be closed: • MOBO Valves: CIT5, CIT 6, CIT, 7, CIT8, CIT 9 and CIT10. Next operation: Deploy and Install MOBO at ALM