دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: Schlumberger wireline tool that records a Spontaneous Potential log and three resistivity curves at different depths. Used to deduce true formation resistivity Rt, invasion profiles and quicklook Hydrocarbon detection.

typically a resistivity log.

a focused resistivity log that uses a pad contact with the borehole wall.

n: 1. water that has little or no salt dissolved in it.2. underground water, generally located near the surface, that does not contain a large amount of salt and from which most underground drinking water supplies are drawn.3. inland surface water, such as lakes, streams, and ponds, that is not salty.

n: Formation water with low salinity. Water is considered fresh when its low conductivity makes the interpretation of resistivity logs difficult. The salinity at which this becomes important depends on temperature and clay content, among other factors, but i

water with less than about 600 ppm total dissolved solids. Suitable for drinking.

n: a resistivity log taken with a sonde that focuses an electrical current laterally, away from the wellbore, and into the formation being logged. Allows more precise measurement than was possible with earlier sondes. The lateral focus log is a useful means of distinguishing thin rock layers. Also called LaterologTM.

n: trade name for a Schlumberger guard or lateral focus resistivity log, but so commonly used as to be almost a generic term.

a pad contact micro resistivity log. Useful for assessing the flushed zone fluid in contact with the pad.

n: heavy-duty paper perforated with several very small holes (pores). Folded in accordion pleats, micropore paper often serves as a secondary filter element in an engines fuel system. Fuel passes through the pores, while the unperforated part of the paper stops dirt. microresistivity log n: a resistivity logging tool consisting of a spring device and a pad. While the spring device holds the pad firmly against the borehole sidewall, electrodes in the pad measure resistivities in mud cake and nearby formation rock. See resistivity well logging.

n: a record of the resistivity of a formation. Usually obtained when an electric log is run. See resistivity well logging.

one of various logs that measure some component of resistivity.

spherically focused resistivity log. Measures the resistivity of the flushed zone (Rxo). In a hydrocarbon zone, the curve may report higher resistivity than deep (ILD) or medium (ILM) induction curves because the flushed zone contains mud filtrate and res