دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

screens where the filtration layer is largely layers of woven screenwire.

n: 1. in mud terminology, refers to the density of a drilling fluid. 2. of a measurement, expresses degree of confidence in result of measurement of a certain quantity compared with result of another measurement of the same quantity.

n: a material that has a high specific gravity and is used to increase the density of drilling fluids or cement slurries.

n: A high-specific gravity and finely divided solid material used to increase density of a drilling mud. (Dissolved salts that increase fluid density, such as calcium bromide in brines, are not called weighting materials.) Barite is the most common, with min

n: The filtrate and clay of drilling fluid intruding into the formation in drilling and completion,then degrade the permeability and production capacity.

n: the recording of information about subsurface geologic formations, including records kept by the driller and records of mud and cutting analyses, core analysis, drill stem tests, and electric, acoustic, and radioactivity procedures. See acoustic log, core analysis, drillers log, drill stem test, electric well log, mud analysis, and radioactivity log.

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

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

n: the detailed results of a well test that present all test data, the calculations drawn from the data, and conclusions pertaining to the wells production potential.

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: the simultaneous or alternate injection of water and air into a formation during an in situ combustion operation. The water reduces heat loss by transmitting heat that would otherwise be left behind in the formation, reduces the amount of required air, and increases the rate of advance of the fire flood. Also called COFCAW (combination of forward combustion and waterflooding). Compare dry combustion.

injecting air and water into a reservoir during a fireflood.

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.