rotary mud
31Drill string — A drill string on a drilling rig is a column, or string, of drill pipe that transmits drilling fluid (via the mud pumps) and torque (via the kelly drive or top drive) to the drill bit. The term is loosely applied as the assembled collection of… …
32Corrected d-exponent — Contents 1 Description 2 Theory 3 Calculation 4 Caveats Description The Corrected d exponent, also known as cd exponent or more correctly dc exp …
33brick and tile — ▪ building material Introduction structural clay products, manufactured as standard units, used in building construction. The brick, first produced in a sun dried form at least 6,000 years ago and the forerunner of a wide range of… …
34List of Dirty Jobs episodes — Dirty Jobs is a program on the Discovery Channel, produced by Pilgrim Films Television, in which host Mike Rowe is shown performing difficult, strange, disgusting, or messy occupational duties alongside the typical employees. The show premiered… …
35Charles Stepney — Birth name Charles Stepney Born 26 March 1931 Chicago, Illinois, United States Origin Chicago, Illinois, United States Died May 17, 1976(1976 05 17) (aged  …
36Tractor — This article is about a vehicle used in agriculture or construction. For the power unit of a semi trailer truck (articulated lorry), see tractor unit. For other uses, see Tractor (disambiguation) …
37Depth in a well — In the oil and gas industry, depth in a well is the measurement, for any point in that well, of the distance between a reference point or elevation, and that point. It is the most common method of reference for locations in the well, and… …
38Rotating locomotion in living systems — A passive wheel Rotating locomotion encompasses two distinct modes of …
39List of problems solved by MacGyver — This is a list of problems that have been solved by the fictional character MacGyver from the television series of the same name. (This list is not yet comprehensive.) MacGyver employs his resourcefulness and his knowledge of chemistry,… …
40Drill line — …
