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 tray type scraper with extend axises

n: the tools which can shave off the mud cake when the pipe rotates and whose doctor blades can extend toward borehole well under the pump pressure

n: a ordinary scraper without holes on the disk shaped surface except the center bore

n: 1. a device that is inserted into a pipeline for the purpose of cleaning;a line scraper. Also called a pig. 2. a device that is lowered into the borehole of a well for various purposes such as enclosing surveying instruments, detonating instruments, and the like. v: to drop or pump a device down the borehole, usually through drill pipe or tubing.

n: a device that is dropped down a borehole,usually through the drill pipe or tubing.

n: the collection of dirt, paraffin, oil, mill scale, rust, and other debris that is cleaned out of a pipeline when a scraper or a pig is put through the line.

n: a term used to describe a mixture of diesel oil,bentonite,and sometimes cement,that is used to combat lost circulation.

n: a scraper device run below retainers or packers to clean away debris from casing ID.

n: see pig.

n: a tube with guides around it to keep it centered in the hole, and a cylindrical piece with blades attached. Spaces between the blades allow drilling fluid to pass through and carry away the scrapings.