دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. the underground accumulation of oil and gas in geological traps. 2. the accumulation in rock pores of large polymer or surfactant molecules unable to move because of small exit openings. The coiled-up molecules reduce the permeability of pores to water but permit oil to pass through the pores.

n: an exploration method in which an instrument that measures the intensity of the natural magnetic forces existing in the earths subsurface is passed over the surface or through the water. The instrumentation detects deviations in magnetic forces, and such deviations may indicate the existence of underground formations that favour the entrapment of hydrocarbons.

n: in waterflooding, the entrapment of oil in rocks of lower permeability, where gas space has developed during primary production. The resaturated oil is bypassed by the waterflood as the water seeks the path of highest permeability.