دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a small vent in an otherwise airtight enclosure for maintaining equality of pressure inside and outside.

n: a conglomerate rock composed largely of angular fragments greater than 0.08 inch (2 millimetres) in diameter.

fragmented (not wear rounded) grains. Rock along moving faults may have this texture.

n: a major area of oil production in the British sector of the North Sea.

a North Sea field with a light crude oil used for cost comparisons.

n: 1. an obstruction in the borehole, usually caused by the caving in of the well or the borehole or by the intrusion of a large boulder.2.a tool placed in the hole to retain cement or other material;it may later be removed, drilled out, or left permanently.

n: An obstruction in the borehole, caused by a buildup of material such as scale, wellbore fill, or cuttings that can restrict wellbore access or, in severe cases, eventually close the wellbore . In open hole a bridge usually caused by the caving in of the w

a blockage in the wellbore caused by a mass of particles that lock together and prevent pipe movement or flow.

n: See bridged hole, ball up.

n: The blinding phenomenon that the cutting whose size is smaller than mesh bridges in the mesh.

n: a phenomenon that sometimes occurs when a well blows out. Rocks, sand, clay, and other debris clog the hole and stop the blowout.

n: The wellbore blinding due to borehole wall sloughing.

n: a downhole tool, composed primarily of slips, a plug mandrel, and a rubber sealing element, that is run and set in casing to isolate a lower zone while an upper section is being tested or cemented.

n: A kind of down hole tool. Mainly made by slip, mandril and rubber closely element.

a permanent or retrievable plug set typically on wireline to isolate a section of the well.