دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a mechanical refrigeration system in which the refrigerant is absorbed by a suitable liquid or solid. The most CODlD1only used refrigerant is ammonia;the most commonly used absorbing medium is water. Compare compressionrefrigeration cycle.

n: a tubing sub made of abrasionresistant material. It is used in a tubing string where high-velocity flow through perforations may cause external erosion.

an abrasion and erosion resistant tube that is run where ever direct sand impingement is a problem.

n: (CERCLA) a congressional act that gives the government the authority to clean up any site where there is an unremedied release of a hazardous substance. Frequent]y, these sites, which are referred to as Superfund" sites, are areas where hazardous waste has been disposed of improperly.

a group of unrelated companies working on a specific venture.

n: unrefined liquid petroleum. It ranges in gravity from 9. API to 55. API and in colour from yellow to black. and may have a paraffin, asphalt, or mixed base. If a crude oil, or crude, contains a sizeable amount of sulphur or sulphur compounds, it is called a sour crude;if it has little or no sulphur, it is called a sweet crude. In addition, crude oils may be referred to as heavy or light according to API gravity, the lighter oils having the higher gravities.

n: The petroleum which is not being processed.

a wireline or tubing run into a well with a dummy piece of equipment of the same size, shape and stiffness of a valuable or unrecoverable piece of equipment to make sure the equipment can be placed.

n: the process of running an electric log. See electric well log.

n: Electric logs run on a wire line to obtain information concerning the porosity, permeability, density, and/or fluid content of the formations drilled. The drilling-fluid characteristics may need to be altered to obtain good logs.



a method of rock and fluid identification or evaluation that began in 1927. The first log was run by Conrad Schlumberger.

n: (EOR) 1. the introduction of artificial drive and displacement mechanisms into a reservoir to produce a portion of the oil unrecoverable by primary recovery methods. To restore formation pressure and fluid flow to a substantial portion of a reservoir, fluid or heat is introduced through injection wells located in rock that has fluid communication with production wells. See alkaline (caustic) flooding, gas injection, micellar-polymer flooding, primary recovery, secondary recovery, tertiary recovery, thermal recovery, waterflooding. 2. the use of certain recovery methods that not only restore formation pressure but also improve oil displacement or fluid flow in the reservoir. These methods may include chemical flooding, gas injection, and thermal recovery.

one or more of a variety of processes that seek to improve recovery of hydrocarbon from a reservoir after the primary production phase.

n: the most important function of drilling fluids inrotary drilling is to bring cuttings from bottom of the hole to the surface. Some other important functions are :control subsurface pressures, cool and lubricate the bit and drilling string, deposition of a