Coiled tubing
Each of these papers presented at SPE conferences exemplifies the continued progress of industry solutions to maximize commercial value of basins within ever-changing oil and gas dynamics.
This paper details a trial involving the deployment of a transportable coiled tubing (CT) unit capable of holding 30,000 ft of high-strength 2⅞-in. CT.
This paper presents a novel approach to overcoming extended-reach limitations in coiled tubing interventions by using a split-string system, demonstrating measurable improvements in reach and operational speed in laterals exceeding 3 miles.
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This paper details the planning, design, and execution of a project involving the core drilling of three wellbores using coiled-tubing directional drilling along the future Rogfast tunnel route on the Norwegian coast. -
The installation of flowlines in ever-deeper and -more-remote areas requires specific technologies for precommissioning. Coiled tubing can be a solution, but long durations may affect tubing stress and fatigue.
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Larger-diameter coiled tubing recently has been used to perform millouts because of its improved set-down force and increased annular velocities for cleanout purposes. Service companies and operators have reduced the number of wiper trips when using larger-diameter CT, to save time and money.
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A study done to find the root cause of coiled tubing string failures in Montney indicated microbial-induced corrosion, leading the CT service provider to create a biocide treatment program.
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This paper presents the challenges and obstacles faced in the use of a new technology for the plugging and deoiling of sections of unpiggable flowlines before decommissioning.
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The oil industry has responded rapidly to the decline in oil prices of these last few months.
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Today, there is a need for higher-strength coiled-tubing (CT) grades with better resistance to severe environments and better fatigue performance in both the tube body and the bias weld.
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Microbial-influenced corrosion (MIC) has been implicated in few corrosion-related challenges in the well-service industry in the past.
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A common problem in oil and gas wells is excess free gas or water production from only certain portions of the completed interval.
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The gas-producing carbonate zones of the Ghawar field in eastern Saudi Arabia have been affected by extensive iron sulfide (FeS) scale deposition, reducing overall gas production and increasing risks during well interventions.
