COILED TUBING - Conclusion: BP develops guidelines for 16Cr CT

This second of two articles reports on a study by BP Exploration (Alaska) of the behavior of 16Cr coiled tubing in field tests on the North Slope that led to the development of guidelines and operating procedures for continued work.Published last week, Part 1 documents the testing and results of the lab and field studies, including general notes on handling and running 16Cr coiled tubing (CT). This part discusses metal-to-metal friction, coil life, pressure loss while pumping, acid treatments, failure analysis, conclusions about working with chrome CT, and ongoing testing.Metal-to-metal frictionChrome tubulars can damage carbon steel completions, and friction also develops between 16Cr an...

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