دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

bottom hole televiewer – a sonic caliper tool, not a television.

n: A kind of device. When downhole instrument is lifted through wellbore, the wall is scaned by impulsive sonar with dense spiral. The picture of wall can be produced by converting echo of TV screen. The picture can disclose split and cavern.

a sonic caliper, developed in the late 1960’s, which generated a sonar picture of the wellbore.

n: an instrument with two legs or jaws that can be adjusted for measuring linear dimensions, thickness, or diameters.

n: Used for measuring the diameter of wellbore or internal diameter of pipe (casing).

n: a record showing variations in wellbore diameter by depth, indicating undue enlargement due to caving in, washout, or other causes. The caliper log also reveals corrosion, scaling, or pitting inside tubular goods.

n: A tool run on wireline that measures the diameter of the wellbore. It may be used for detecting washouts, calculating cement volumes, or detecting internal corrosion of casing.

a recording of the diameter changes in a well made by a tool with mechanical arms that touch the wellbore or a sonic signal bouncing off the borehole wall.

n: See caliper log.

n: Borehole diameter value of every well depth obtained from borehole diameter chart.

n: See caliper logging.

n: Logging in the cased hole, for example, cement bond log, casing caliper log, casing coupling log and other well loggings.