دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: Schlumberger wireline tool that measures phase shift and attenuation of a 1100 MHz wave. Used for Hydrocarbon identification independent of formation water salinity, thin bed detection, Hydrocarbon saturation and mobility and to evaluate invaded zones.

n: The resistivity recorded by electrical logging. It is different from the real resistivity due to the influence of cake, invaded zone and surrounding rock.

resistivity recording where the measured value differs from the true or defined state by the influence of the mud column, invasion of a zone by fluids, or wellbore anomalies.

measurement of formation properties far enough from the wellbore to minimize the effects of the invaded zone.

an induction log with dual and deep measurements of resistivity. Shallow measurements are indicative of severely invaded zone and the deepest measurements are most reflective of actual formation fluids.

n: an area within a permeable rock adjacent to a wellbore into which a filtrate (usually water) from the drilling mud has passed, with consequent partial or total displacement of the fluids originally present in the zone.

n: The volume close to the borehole wall in which some or all of the moveable fluids have been displaced by mud filtrate. It consists of the flushed zone and the transition zone or annulus. In simple models, the invaded zone and the flushed zone are consider

the part of the rock next to the wellbore into which wellbore fluid has leaked.

water saturation of the uninvaded zone.

corrected water saturation of the uninvaded zone.

water saturation of the uninvaded zone.