دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a bladed tool used to scrape away junk or debris from inside casing;it is usually run into the casing on drill pipe or tubing.

n: A tool for cleaning crud of inside wall of casing. The blade with sword is installed in the cavity of cage. The blade clings the pipe wall because of leaf spring.

a downhole tool with scraping teeth and brushes that is used to remove perforating burrs, “lipped down” areas in connection pins and remove mill scale, dried mud or cement, pipe dope and other well completion debris.

n: a lubricant for the threads of oilfield tubular goods. v: to apply thread lubricant.

n: A generic term applied to all types of thread lubricants. For casing, tubing and line pipe use lubricants specified in API Bulletin 5A. For tool joints and drill collars less than 7 inches OD, use a thread lubricant containing not less than 40-60% by weig

pipe thread dope used to lubricate and seal the threaded connection.

n: the container in which dope is stored on the rig floor.

n: a portable container used to melt coal tar enamel and maintain it at the temperature required by a pipe-coating operation.

n: 1. the process of adding certain impurities to an element. 2. applying lubricant (dope) to a tool joint or other threaded connection.

n: a cylindrical or spherical device that is affixed to the end of a wireline just above the hook to keep the line straight and to provide weight. v: to soak metal pieces in a chemical solution to remove dirt and scale from the metals surface.

a chemical treatment of the tubulars to remove pipe dope, mill scale and mud or cement residue.

n: tar asphalt paint , it prvents from corruption.


a lubricant, anti-gall and sealer applied to the pin threads when making a connection in the pipe.

n: see dope.

n: A kind of plastic substance that be used to lubricate the thread of joint of drill collar,drill pipe and other drill tool.

n: see dope.