دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

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

n: the assembly of tools run into the hole during fishing to perform a wash- over. A typical wash- over string consists of a washover back-off connector, several joints of washover pipe, and a rotary shoe.

n: the depth of free water in a container over and above the dip plate.

n: The measure used to seal the water layer in the drilling process or workover,for example,squeeze cement.

purposely injecting water below and/or into the reservoir to drive the oil towards the producing wellbore. This is a secondary recovery mechanism.

n: a well into which water is pumped to dispose of the water or to recover oil in a waterflood.