دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: the procedure whereby one threaded piece (such as a pipe) is unscrewed from another.

v: To disconnect a string of pipe by unscrewing one threaded piece from another.

unscrewing a tool or equipment. In pipe recovery, back-off of a joint precedes recovery of the upper section in a well. Common in plug and abandonment or sidetrack operations.

separating a pipe string with a explosive cutter.

a linear explosive cutter that is designed the cut linearly through the pin and box connection during pipe recovery.