Application of Torque-Position Assembly Technology for API Connections

摘要

American Petroleum Institute (API) threaded casing and tubing connections are expected to maintain structural integrity and sealability performance throughout the life of the well. Current industry standards specify thread dimensions and tolerances, but the critical makeup operation is specified with either torque only or standoff (position) control. One operator developed, and for the last 20 years has been using, a quality-control process for makeup that combines torque monitoring and a measurement of final assembly position. This assembly method, called "torque position," has provided gas-tight strings for critical well applications worldwide.