دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a device that uses the principle of induction to convert variations of current in a primary circuit into variations of current and voltage in a secondary circuit. It typically consists of two coils with different numbers of turns about a single iron core.

n: 1. a high-voltage line used to transmit electric power from one place to another. 2. a pipeline used to transmit natural gas or other fluids.

n: a body of permeable oil-bearing rock surrounded or overlain by an impermeable barrier that prevents oil from escaping. The types of traps are structural, stratigraphic, or a combination of these.

n: A configuration of rocks suitable for containing hydrocarbons and sealed by a relatively impermeable formation through which hydrocarbons will not migrate. Traps are described as structural traps (in deformed strata such as folds and faults) or stratigrap

n: 1. in meteorology, a zone or belt of relatively low pressure. 2. in oceanography, the lowest point of the water surface level between crests.

n: a method of producing a well in which only production casing is set through the pay zone, with no tubing or inner production string used to bring formation fluids to the surface. This type of completion has its best application in low-pressure, dry-gas reservoirs.

n: A completion design in which the reservoir fluids are produced through small-diameter casing. The absence of a separate tubing string significantly limits the operating and contingency options available for the well.

a low cost completion or multiple completion in which the tubing strings are cemented directly in the hole. There is no outer casing. Due to the small tubing diameters, potential to repair or re-enter the well for repairs is limited.

n: the treeless plain characteristic of much of the Arctic. Although the tundra remains frozen for much of the year, it is highly sensitive to environmental disturbance, and special pipeline construction techniques are required there.

n: a fine, very hard, gray crystalline powder, a compound of tungsten and carbon. This compound is bonded with cobalt or nickel in cemented carbide compositions and used for cutting tools, abrasives, and dies.

n: The gray stiff powder,cannt dissolve in the water, but can dissolve preferablly in the nitric acid and hydrofluoric acid.

a hard, abrasion resistant compound used in cutting tools such as mills and bits.

n: a very hard, and relatively small, cylinder made of tungsten carbide bonded with nickel or cobalt. One end of the insert is rounded or tapered;the other end is truncated (cut oft) and inserted into a bit cone. The round or tapered end contacts the formation and drills it. Several inserts make up the cutters on a tungsten carbide insert bit.