دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a process used to repair a hole in the casing by pumping cement down tubing or drill pipe. First. the casinghead, or bradenhead, is closed to prevent fluid from moving up the casing. Then the rigs pumps are started. Pump pressure moves the cement out of the tubing or pipe and, since the top of the casing is closed, the cement goes into the hole in the casing. The tubing or pipe is pulled from the well and the cement allowed to harden. The hardened cement seals the hole in the casing. Although the term bradenhead squeezing" is still used, the term ,."bradenhead" is obsolete. See annular space. casinghead, squeeze.

n: the part of the brake that presses on the brake drum. On the drawworks, the circular series of brake blocks are bolted to the brake bands with counter- sunk brass bolts;the lining is the frictional, or gripping, element of a mechanical brake.

n: Refers to the lining of brake staple which is consisted of a set of brake blocks. Fixed in the inner surface of brake staple with head aluminium screw. Brake lining stops when the surface of brake holds the brake drum.

n: The voltage when emulsion begins to demulsify under the certain condition. A target used to measure stability of emulsion.

n: a conglomerate rock composed largely of angular fragments greater than 0.08 inch (2 millimetres) in diameter.

fragmented (not wear rounded) grains. Rock along moving faults may have this texture.

n: the breaking of solid rock into coarse, angular fragments by faulting or crushing.

n: a forged or cast steel fitting for a wire rope or a strand. It has a basket with adjustable bolts that secure rope ends. bridging materials n pI: the fibrous, flaky, or granular material added to a cement slurry or drilling fluid to aid in sealing formations in which lost circulation has occurred. See lost circulation, lost circulation material.

n: water that has a large quantity of salt, especially sodium chloride, dissolved in it;salt water.

n: Dissolving a great quantity of salt, especailly sodium chloride. Usually used to make up salt water drilling fluid.

a mixture of water and a soluble salt. Most common brines are sodium chloride NaCl, potassium chloride KCl and calcium chloride CaCl2. Brine densities may range from 8.33 to > 19 lb/gal (1 to >2.28 g/cc). The USGS definition of a brine is a salinity of mo

n: (BLM) an agency within the Department of the Interior (DOI) that is responsible for managing the nations public lands and resources in a combination of ways that best serves the needs of the American people. The resources on public lands under BLM authority include recreation;forestry;fish and wildlife;range;timber;minerals;water-shed;wilderness;and natural, scientific, and cultural values. Address: Dept. of the Interior, Main Interior Bldg.;Washington, DC 20240;Directors Office (202) 452- 5125.