- 産業: Education; Oil & gas
- Number of terms: 4495
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- Company Profile:
The Petroleum Extension Service (PETEX) is a unit of the Division of Continuing Education at The University of Texas at Austin and has been training companies and individuals since 1944.
the mass or weight of a substance per unit volume. For instance, the density of a drilling mud may be 10 pounds per gallon, 74.8 pounds/cubic foot, or 1,198.2 kilograms/cubic meter. Specific gravity, relative density, and API gravity are other units of density.
Industry:Oil & gas
a rig mounted on a wheeled and towed trailer. It has a mast, a rotary, and one or two engines.
Industry:Oil & gas
a special radioactivity log for open-hole surveying that responds to variations in the specific gravity of formations. It is a contact log (i.e., the logging tool is held against the wall of the hole). It emits neutrons and then measures the secondary gamma radiation that is scattered back to the detector in the instrument. The density log is an excellent porosity-measure device, especially for shaley sands. Some trade names are Formation Density Log, Gamma-Gamma Density Log, and Densilog.
Industry:Oil & gas
a work shift that generally begins at or near midnight. See graveyard tour.
Industry:Oil & gas
the gear or chain arrangement by which power is transmitted from the prime mover to the drawworks, the mud pump, or the rotary table of a drilling rig.
Industry:Oil & gas
a large load-bearing structure, usually of bolted construction. In drilling, the standard derrick has four legs standing at the corners of the substructure and reaching to the crown block. The substructure is an assembly of heavy beams used to elevate the derrick and provide space to install blowout preventers, casingheads, and so forth.
Industry:Oil & gas
the crew member on a rotary drilling rig, who is responsible for the care and operation of drilling engines. Also called motorman.
Industry:Oil & gas
an arrangement of pulleys, or sheaves, through which drilling cable is reeved, which moves up or down in the derrick or mast.
Industry:Oil & gas
