دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the process of running an electric log. See electric well log.

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



a method of rock and fluid identification or evaluation that began in 1927. The first log was run by Conrad Schlumberger.

n: a type of radioactivity well log that records natural radioactivity around the wellbore. Shales generally pr0- duce higher levels of gamma radiation and can be detected and studied with the gamma ray tool. In holes where salty drilling fluids are used, electric logging tools are less effective than gamma ray tools. See radioactivity well logging.

n: in conventional electric logging. the curve drawn on the log by a device on an electric logging tool that is designed to measure formation resistivity about 36 feet (11 metres) from the wellbore.

n: a resistivity curve made by a conventional electric logging device.

n: in conventional electric logging, measures resistivity in the formation only a short distance from the borehole. Used for shallow investigation of the formation.

n: in conventional electric logging, measures resistivity in the formation a long distance from the borehole. Used for deep investigation of the borehole.