دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. a derrick or crane shaped like the letter A and used to handle heavy loads. 2. an A-shaped openwork structure that is the stationary and supporting component of the mast of a jackknife rig and to which the mast is anchored when it is in an upright or drilling position. 3. the uppermost section of a standard derrick, shaped like the letter A and used as a support in lifting objects such as the crown block to the water table.

n: A kind of "A" frame gin pole, used to elevate heavy object.

v: to cease producing oil and gas from a well when it becomes unprofitable or to cease further work on a newly drilled well when it proves not to contain profitable quantities of oil or gas. Several steps are involved: part of the casing may be removed and salvaged;one or more cement plugs are placed in the borehole to prevent migration of fluids between the different formations penetrated by the borehole;and the well is abandoned. In most oil-producing states, it is necessary to secure permission from official agencies before a well may be abandoned.

to cease efforts to produce or inject fluids in a wells and to plug the well sufficiently to protect the environment and the ability to redrill and develop other reserves at a later date.

n: Generally The power is supplied by electric power net. The working machine is drived by AC motor. It belongs to the drilling rig which has no self-sustaining ability.

n: a joint to connect blowout preventers of different sizes or pressure ratings to the casing head.

n: A joint used to connect BOPs with different sizes or working pressures and casing head.

n: 1. in general, a substance added in small amounts to a larger amount of another substance to change some characteristic of the latter. In the oil industry, additives are used in lubricating oil, fuel, drilling mud, and cement. 2. in cementing, a substance added to cement to change its characteristics to satisfy specific conditions in die well. A cement additive may work as an accelerator, retarder, dispersant, or other reactant.

n: The agent put into the drilling fluid in order to change some performances of the drilling fluid or slurry.

a compound incorporated into a gas, liquid, or solid system to alter the properties for a particular purpose.

abbr: authority for expenditure. affiant n: the person who makes a sworn statement.

Authority for Expenditure on a well (authorized funds for drilling or workover).

n: a written affirmation of fact made and sworn to before a notary public or other authorised official. The official signs a certificate called a jurat, which states that the affidavit was signed and sworn to before him or her.

n: The gas-holder tank connected with discharge line of reciprocal pump. It is a air cushion aerated by compressive air, used to absorb or decrease fluctuation of pressure and delivery capacity disproportion when reciprocal pump works.

n: A rig whose every clutch and drawworks brakestaff are controled by compressive air. Usually assisted with hydraulic brake and dynamic brake.