دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

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.

critical pitting temperature.

a corrosion, abrasion or erosion measure of penetration through the walls of the measured material. MPY reports the material loss as an average across a surface and does not accurately reflect penetration by localized pitting.

Extremely localized attack that results in holes in the metal. Will accelerate after start.

a relative measure of a material’s pitting resistance in corrosive service.

pitting resistance equivalent number.