Engineered high-pressure coiled tubing cleanouts

Described in this article are important inputs to job design engineering for a high-pressure, coiled-tubing sand cleanout in a deep South Texas well. Circulation, force and stress analysis design criteria, and fluid selection are discussed, plus determination of fatigue analysis – the final step in job planning. Beginning in April 2002, the well was successfully cleaned out and a cast-iron bridge plug was installed to abandon a bottom- water zone.

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