دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a large, cylindrical tank in which water that is slightly oil-contaminated is circulated to be cleaned before it is disposed of overboard or into a disposal well. Since oil droplets cling to rapidly rising gas, a device such as a bubble tower is usually installed in the cell to permit the introduction of gas into the water.

n: one of the earliest methods for bending pipe. The joint was first placed over a small bonfire and, when the heat had rendered it sufficiently malleable, it was placed against a tree and pressure was applied until the desired benk was achieved. Fire bends significantly weakened the pipe. A cold-work process is less damaging.

a tertiary recovery method involving injection of air into the formation and igniting the oil. Under the right conditions, the heat produced from combustion of the heavy ends that are trapped on the sand grains lowers the oil viscosity and liberates light

n: a structure erected to contain petroleum or a petroleum-fed fire in case a storage vessel ruptures or collapses. Usually a dike is built around the petroleum storage tank and a steel or stone wall is put up between the prime movers and the oil pumps in a pipeline pumping station.

n: in pipeline construction. the welding crew that takes over after the root pass and the hot pass have been made. The firing line is responsible for the filler pass and the cap bead, which complete the joint.

n: an object that is left in the wellbore during drilling or workover operations and that must be recovered before work can proceed. It can be anything froo1 a piece of scrap metal to a part of the drill stem. v: 1. to recover from a well any equipment left there during drilling operations, such as a lost bit or drill collar or part of the drill string. 2. to remove from an older well certain pieces of equipment (such as packers. liners, or screen liner) to allow reconditioning of the well.

n: Any object in a well that obstructs drilling or operation;usually pipe or junk.

a lost piece of equipment in the well.

a upward turning horizontal well – usually over 90o.

n: the procedure of recovering lost or stuck equipment in the wellbore. See fish. fishing assembly n: seefishing string.

n: The application of tools, equipment, and techniques for the removal of junk, debris, or fish from a wellbore. The key elements of a fishing operation include an understanding of the dimensions and nature of the fish to be removed, the wellbore conditions,

n: a specialised fixture on a downhole tool that will allow the tool to be fished out after its use downhole. See fish. fishing magnet n: a powerful permanent magnet designed to recover metallic objects lost in a well.

n: the specially made acron of downhole tools ,able to fish the junks with the coordinate of fishing tools

n: refer tohelraser

a magnet, usually run on wireline, used to recover lighter metal components from the well.