دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a chemical additive that reduces the setting time of cement. See cement, cementing materials.

n: A downhole tool used in conjunction with a jar to store energy that is released suddenly when the jar operates.

locks slips, mandrels or cones in place in a downhole tool.

n: a downhole tool, composed primarily of slips, a plug mandrel, and a rubber sealing element, that is run and set in casing to isolate a lower zone while an upper section is being tested or cemented.

n: A kind of down hole tool. Mainly made by slip, mandril and rubber closely element.

a permanent or retrievable plug set typically on wireline to isolate a section of the well.

v: to use a mill to remove the outside area of a permanent downhole tool.

n: a tool composed of a mandrel on which are mounted several heavy-duty rollers with eccentric roll surfaces. It is used to restore buckled, collapsed, or dented casing in a well to normal diameter and roundness. Made up on tubing or drill pipe and run into the well to the depth of the deformed casing, the tool is rotated slowly, allowing the rollers to contact all sides of the casing and restore it to roughly its original condition.

n: The tool for repairing and maintaining casing. Consisted by arbor and a set of bias gyro wheel.

a downhole tool, commonly run on pipe to try to reform the casing after a partial collapse.

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 finger like device used to lock or position certain tool components by manipulating the tubing string or downhole tool.

n: a small hydraulic line used to run fluid from the surface to a downhole tool, such as a subsurface safety valve.

a small diameter line, usually attached to the outside of tubing, which controls the ScSSV or other downhole tools.

n: the downhole tools whose ownership doesnt belong to the user who must pay the lessor for the right to use

n: downhole appliance used to carry out the missions and brought out of the well after all operations,such as the bit,puller and bullet gun and so on