دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the maintenance work performed on an oil or gas well to improve or maintain the production from a formation already producing. It usually involves repairs to the pump, rods, gas-lift valves, tubing, packers, and so forth.

n: measures the time needed for a sound pulse generated at the surface to reach successive selected depths in the borehole. Used to correct problems in downhole acoustic logs caused by filtrate invasion of the formation and borehole irregularities. Also used to calibrate depths on seismic sections.

n: interprets information transmitted from the downhole sonde to make corrections for downhole conditions, make complex calculations, and print out various log formats. Also keeps track of the depth at which the logs are being obtained and warns of malfunctions.

n: an acidizing treatment in which the acid is placed in the wellbore and allowed to react by merely soaking. It is a relatively slow process, because very little of the acid actually comes in contact with the formation. Also called wellbore cleanup. See matrix acidizing. Compare acidfracture.

the after flow, created by wellbore volume, into a wellbore after the surface valve has been closed.

n: the equipment installed at the surface of the wellbore. A wellhead includes such equipment as the casinghead and tubing head. adj: pertaining to the wellhead (e.g., wellhead pressure).

the mechanical connection between the tree and the casing. May house tubular hangers, annular access valves. It is connected to the casing by welding, threads, hydraulic forming or set screws.

the total energy transferred as heat in an ideal combustion reaction of a water saturated gas at a standard temperature and pressure in which all water formed appears as a liquid.

n pi: land or areas containing much soil moisture. Wetland areas include areas that support vegetation typically found in saturated soils;that are saturated, flooded, or ponded enough during the growing season to result in an absence of oxygen in their upper parts;or that are subject to wetland hydrology, which results in saturated soil conditions on at least a seasonal basis.

water flood regulation valve.

n: 1. a well drilled in an area where no oil or gas production exists. 2. (nautical) the geared sheave of a windlass used to pull anchor chain. v: to drill wildcat wells.

n: An exploration well. The significance of this type of well to the drilling crew and well planners is that by definition, little if anything about the subsurface geology is known with certainty, especially the pressure regime. This higher degree of uncerta

a well in a previously undrilled area. An exploratory well.