دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

flow cutting of equipment downhole.

an enlarged area of the wellbore caused by removal of formation grains during drilling or circulation.

n: the operation during which stuck drill stem or tubing is freed using washover pipe.

n: see washover pipe. washover back-off connector n: a fishing tool that is made up in a length of washover pipe connected to the top of the fish once the washover is completed, and then backed off the fish, thus enabling the washed-over part of the fish to be retrieved. The tool permits washover, back-off, and pulling to be carried out in one round trip.

n: In fishing operations, a large-diameter pipe fitted with an internal grappling device and tungsten carbide cutting surfaces on the bottom. The washover pipe can be lowered over a fish in the wellbore and to latch onto and retrieve the fish. Since the wash

n: A kind of fishing tool fixed in the washover pipe.

using a overshot tool and circulation to remove debris above and from around a fish and grip the fish with the overshot.

n: an accessory used in fishing operations to go over the outside of tubing or drill pipe stuck in the hole because of cuttings, mud, and so forth, that have collected in the annulus. The washover pipe cleans the annular space and permits recovery of the pipe. It is sometimes called washpipe.

n: In fishing operations, a large-diameter pipe fitted with an internal grappling device and tungsten carbide cutting surfaces on the bottom. The washover pipe can be lowered over a fish in the wellbore and to latch onto and retrieve the fish. Since the wash

a recovery tool that fits over the OD of the lost pipe.

n: It be used to join the drilling string and washover string.

n: see burn shoe.

n: A downhole tool routinely used in fishing operations to prepare the top and outside surface of a fish, generally to allow an overshot or similar fishing tool to engage cleanly on the fish. In some cases, the outer portion of a fish may be milled out to al