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Well control stack for CT operations

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Proceedings Papers

Paper presented at the Offshore Technology Conference Asia, November 2–August 19, 2020
Paper Number: OTC-30408-MS
...-in to 2.5-in, having brass insert with inner diameter (ID) 2.06-in as depicted in Fig. 1. The cold water is pumped from top to bottom ensuring no steam inflow in PCE stack With limited coiled tubing (CT) operations in high-temperature, large-diameter geothermal wells across the world, planning...
Proceedings Papers

Paper presented at the Offshore Technology Conference Asia, November 2–August 19, 2020
Paper Number: OTC-30347-MS
... motion and operating loads. There is risk of compressive loads in the stack up that can buckle the CT riser joints and create uplift forces that can dislodge or topple the jacking tower. The wells hosted on the DTU were conventionally drilled and completed using a tender assist drilling unit or TAD...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, August 27–29, 2018
Paper Number: SPE-191013-MS
... The challenge was that the 4-1/2-in. tubing buckled or bent/twisted due to weight on PBR during the well completion phase. This can cause an unsuccessful fishing operation. The solution was to remove the helical buckling by rigging up Stack #2 after fishing the CT until the well could...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing and Well Intervention Conference and Exhibition, March 25–26, 2014
Paper Number: SPE-168263-MS
... A and Project B projects respectively, to allow the passage of full-bore mills. Figure 5 and Figure 6 illustrates the approved well control stacks utilized on Project A and Project B respectively. For the 7 1/16" BOP additional accumulator units were required to operate the BOP stack by using the CT...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing and Well Intervention Conference and Exhibition, March 21–22, 2017
Paper Number: SPE-184768-MS
... planning and management CT operation CT string Well control stack masp An operator drilled but did not complete two wells in a remote Alaska field in 2009 and 2010. The operator agreed to an initial development plan for the field in 2012. The operator planned a project to complete these two...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing and Well Intervention Conference and Exhibition, March 25–26, 2014
Paper Number: SPE-168246-MS
... be realized: Faster rig-up and rig-down of CT equipment—with the preassembled well control stack, the number of flange connections that would require to be made up onsite could be drastically reduced. The requirement to make up a minimum of 84 bolts could be removed from the operation onsite, removing...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing and Well Intervention Conference and Exhibition, March 25–26, 2014
Paper Number: SPE-168248-MS
... control stack subsea well intervention service company production enhancement best practice operation pressure testing Completion Installation and Operations Upstream Oil & Gas CT string operator ct service company CTLF injector head spe 168248 personnel crane In addition...
Proceedings Papers

Paper presented at the SPE/ICoTA Well Intervention Conference and Exhibition, March 26–27, 2019
Paper Number: SPE-194234-MS
...% of the operational time ( Fig. 11 ). Unsurprisingly, the most feet of CT per hour was realized on wells where the fish could be recovered to the BOP stack and then jacked out or recovered with the crane ( Fig. 12 ). Figure 11 Percentage CT fish recovery method Figure 12 CT fish recovery times...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing and Well Intervention Conference and Exhibition, March 27–28, 2018
Paper Number: SPE-189931-MS
..., this is rare for operations that call for CT intervention and will not be discussed further thereafter. The problem with using the section-by-section technique in underbalanced wells lies in making the connection between the BHA section that is already deployed into the well (called the lower BHA...
Journal Articles
J Pet Technol 73 (07): 51–52.
Paper Number: SPE-0721-0051-JPT
Published: 01 July 2021
... elements rated to high temperatures (400°F). To prevent high- temperature steam from entering the wellhead stack, the blowout preventer, and other surface- equipment elements, an efficient HER system was designed wherein, while the CT is still in the well performing CT operations, the cold water can...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing and Well Intervention Conference and Exhibition, March 25–26, 2014
Paper Number: SPE-168302-MS
... of the rig-up. High-pressure CT operations on the F-11 well required that redundant 15,000 psi – rated pressure control equipment had to be deployed. The height (39ft) and weight (25,000 lbs) of the CT wellhead stack required a robust solution to minimize stress loading on its components and the 25-year...
Proceedings Papers

Paper presented at the SPE Electric Submersible Pump Symposium, April 24–28, 2017
Paper Number: SPE-185146-MS
... the rigless CDESP deployment process. As a new alternative ESP deployment technology, rigless CDESP operations have undergone very strict scrutiny in the area of well control. In review of a rig-based operation and rigless CT operation, a hybrid BOP stack is developed to meet the company's well control...
Proceedings Papers

Paper presented at the SPE/CSUR Unconventional Resources Conference, October 20–22, 2015
Paper Number: SPE-175962-MS
... on a conventional CT spread was designed to improve safety and increase efficiency by reducing the overall TBW on multi-well pads. Completion Installation and Operations injector Upstream Oil & Gas injector stack Efficiency drilling operation CT operation Coiled tubing operations conventional ct...
Proceedings Papers

Paper presented at the SPE/ICoTA Well Intervention Conference and Exhibition, March 24–25, 2020
Paper Number: SPE-199837-MS
..., based on CT material properties that could lead to problems, including well control and personnel exposure to H 2 S during retrieval operation Surface equipment condition Hanger seal and slip release mechanism Fishing technique for initial string retrieval There are several distinct...
Proceedings Papers

Paper presented at the SPE/ICoTA Coiled Tubing & Well Intervention Conference and Exhibition, March 31–April 1, 2009
Paper Number: SPE-121749-MS
... Abstract BP Exploration in Alaska were planning Coiled Tubing (CT) operations on wells that have components in the wellhead stack with 2–9/16", 5,000 psi components at the bottom of the stack. There was a concern that the CT intervention stack and associated equipment could damage these small...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, March 23–April 1, 2021
Paper Number: IPTC-21238-MS
... to purpose for wells in late field life without jeopardizing the well barrier requirement. Compared to conventional jointed-tubing ESP, TTESP combined with CT-ISV can be installed in a similar way to any wireline well intervention operation without the need of a Workover rig. This implementation leads...
Proceedings Papers

Paper presented at the SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition, April 24–27, 2017
Paper Number: SPE-188020-MS
... procedure cable saudi arabia Efficiency assembly power cable rigless operation operation annular BOP electrical submersible pump installation well control situation seal stack assembly Completion Installation and Operations salinity coiled tubing bowl protector society of petroleum...
Proceedings Papers

Paper presented at the SPE/ICoTA Well Intervention Conference and Exhibition, March 26–27, 2019
Paper Number: SPE-194244-MS
... by the blue arrows at the bottom of the image. Conventional VSP products were created from the vertical portion of the well. Figure 5 Stacked, correlated, and common-mode noise-rejected zero-offset shot record for DAS VSP acquired with a CT-conveyed fiber optic cable deployed in both vertical...
Proceedings Papers

Paper presented at the SPE/ICoTA Well Intervention Conference and Exhibition, March 22–25, 2021
Paper Number: SPE-204419-MS
.... It was decided that an installation of TT screens across the existing completion would be a permanent solution to continue producing the well. However, conventional CT intervention also faced several challenges such as limited stack up height, congested working area and adverse weather conditions...

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