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.

abbr: plug and abandon.

plug and abandonment.

v: (P&A) to place cement plugs into a dry hole and abandon it.

P&A. Setting cement and mechanical plugs to seal off pays, potential leak points, fresh water zones and the surface.