دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

a workover using a small diameter tubing inside the existing tubing. Usually done with a hydraulic workover rig or coiled tubing. Commonly used with a positive surface well pressure and seals on the smaller tubing in a live-well workover.

hydraulic workover, usually working under pressure. Some HWO units are set up with pipe handling capacity as are snubbing units.

hydraulic workover unit.

n: a series of hydraulic rams to restrain and pull tubing under well pressure, temporarily attached to the wellhead for workover

n: a series of hydraulic rams to restrain and pull tubing under well pressure, temporarily attached to the wellhead for workover.

a hydraulic workover/snubbing tubing running term – when the weight of the pipe is sufficient to pull the pipe into a well against the surface pressure.

hydraulic workover/snubbing tubing running term – when the weight of the pipe is not sufficient to pull the pipe into a well against the surface pressure and additional force (snubbing) is required.