دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

the oldest terrain from the Cretaceous period.

n: a device that secures, or fastens, equipment. In producing wells with sucker rod pumps, a gas anchor is a special section of perforated pipe installed below the pump. It provides a space for gas to break out of the oil. In offshore drilling, floating drilling vessels are often secured over drill sites by large anchors like those used on ships. For pipelines, a device that secures pipe in a ditch.

n: Means of holding the deadline to the derrick or substructure. Usually this is the primary element of the weight indicator

a device with slips that holds equipment in the wellbore.

n: A kind of wash over fishing tool. The slip grip which is used to wash over and fish the pipe stick in the wellbore is installed in the washover pipe.

n: a large valve, usually installed above the ram preventers, that forms a seal in the annular space between the pipe and the wellbore or, if no pipe is present, in the wellbore itself. Compare ram blowout preventet:

n: See annular blowout preventer.

a device installed above or below the BOP that is capable of sealing around any device, and even on itself if the wellbore is empty.

n: A large BOP (q.v.) valve that forms a seal in the annular space between the wellbore and the drill pipe. It is usually installed above the ram type preventers in the BOP stack.

a elastomer bag or donut type seal, pushed into contact with the pipe or tools in the blow out preventer (BOP). It is designed to seal around pipe or any other irregular surface tool (packers, guns, pumps, etc.) that may be in the BOP. May also be called

n: the space between two concentric circles. In the petroleum industry, it is usually the space surrounding a pipe in the wellbore, or the space between tubing and casing, or the space between tubing and the well bore;sometimes termed the annulus.

n: The space between a pipe and a hole. The space between drillstring and hole or casing is an Annulus.

n: The resistivity recorded by electrical logging. It is different from the real resistivity due to the influence of cake, invaded zone and surrounding rock.

resistivity recording where the measured value differs from the true or defined state by the influence of the mud column, invasion of a zone by fluids, or wellbore anomalies.

n: The technique used in drilling in order to explore and exploit reservoir. Mainly including wellbore designing, bit choosing, drilling parameter optimization, deviation controling, drilling fluid choosing and drilling hydraulics.

n pi: hydrocarbons derived from or containing a benzene ring. Many have an odour. Singlering aromatic hydrocarbons are the benzene series (benzene, ethylbenzenes, and toluene). Aromatic hydrocarbons also include naphthalene and anthracene. Compare aliphatic hydrocarbons.