دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a reduction unit between a prime mover and a beam pumping unit that reduces the prime movers output speed by means of a series of chains.

n: a test standardised by the American Gas Association and the Gas Processor Association for determining the natural gasoline content of a given natural gas. The gasoline is adsorbed from the gas on activated charcoal and then recovered by distillation. The test is described in Testing Code 101-43, a joint AGA and GPA publication.

n: a length of pipe fitted over a wrench handle to increase the leverage of the wrench. Use of a larger wrench is usually preferred. Also called a snipe.

n: A pipe used to increase arm of force. Installed in the wrench or pipe tongs.

a length of pipe used on a wrench to extend the leverage. (HSE risk).

determines formation seismic wave velocities over specific intervals. Measurement is made of travel time from surface to downhole geophones.

n: see alkaline (caustic) flooding, micellarpolymer flQoding.

one of several methods involving injecting a chemical into a formation to improve the production of hydrocarbon. May be from an injection well to a production well or injection into a producer with a soak period before recovery.

an overshot fishing tool with a bottom cutter surface to allow milling the top slips or all the slips prior to retrieving a packer.

a clay type marked by high iron content. Usually not water sensitive and only slowly acid soluble. Very occasionally existing as fragile, free standing rims following sand grain dissolution over geologic time.

n: a pipe attached to the blowout preventer stack out of which kick fluids and mud can be pumped to the choke manifold when a blowout preventer is closed in on a kick.

n: A high-pressure pipe leading from an outlet on the BOP stack to the backpressure choke and associated manifold. During well-control operations, the fluid under pressure in the wellbore flows out of the well through the choke line to the choke, reducing th

a drilling and workover pressure control device. A line that attached to the BOP stack and through which kick fluids can be circulated when the BOP is closed.

n: Schlumberger wireline tool that can recover up 90 core samples per trip. An explosive charge fires a hollow bullet into the formation, which is attached to the tool with wires. When the tool is moved, the bullet and sample are pulled out of the formation.

n: an external gripping tool that allows direct circulation through the tool and the fish to keep the wellbore lubricated during fishing. See overshot.