دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a material that has a high specific gravity and is used to increase the density of drilling fluids or cement slurries.

n: A high-specific gravity and finely divided solid material used to increase density of a drilling mud. (Dissolved salts that increase fluid density, such as calcium bromide in brines, are not called weighting materials.) Barite is the most common, with min

n: the methods used to control a kick and prevent a well from blowing out. Such techniques include, but are not limited to, keeping the borehole completely filled with drilling mud of the proper weight or density during all operations, exercising reasonable care when tripping pipe out of the hole to prevent swabbing, and keeping careful track of the amount of mud put into the hole to replace the volume of pipe removed from the hole during a trip.

using barriers to prevent unwanted flow of hydrocarbons to surface.

abbr: weight on bit.

weight on bit.

n: 1. in drilling, the string of drill pipe or tubing suspended in a well to which is attached a special tool or device that is used to carry out a certain task, such as squeeze cementing or fishing. 2. in pipe- line construction, the string of washpipe that replaces the pilot string in a directionally drilled river crossing. The work string remains in place under the river until the actual pipeline is made up and is ready to be pulled back across the river.

The drill pipe or tubing string with special tool ,which can fishing, snubbing cementing,etc.






a special, often large string of tubulars that are used during the completion of the well. Usually higher pressure capacity or allow higher weights than the production tubing.

The reasonable match of bit weight and rate of drilling in the process of drilling .