- Industry: Education; Oil & gas
- Number of terms: 4495
- Number of blossaries: 0
- 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.
Pertaining to a well in which production of oil has decreased and production of water has increased (for example, “the well has gone to water”).
Industry:Oil & gas
In drilling, to assemble the blowout preventer stack on the wellhead at the surface.
Industry:Oil & gas
The recording of the resistance of formation water to natural or induced electrical current. The mineral content of subsurface water allows it to conduct electricity. Rock, oil, and gas are poor conductors. Resistivity measurements can be correlated to formation lithology, porosity, permeability, and saturation and are very useful in formation evaluation.
Industry:Oil & gas
A bit whose outside diameter is worn to the point at which it is smaller than it was when new. A hole drilled with an undergauge bit is said to be undergauge.
Industry:Oil & gas
An employee of an operating company who supervises the operations at a drilling site or well site and who may coordinate the hiring of logging, testing, service, and workover companies. Also called company hand, operator's representative, or company man.
Industry:Oil & gas
The curved connexion between the rotary hose and the swivel. See swivel.
Industry:Oil & gas
A formation-stimulation process first used about 100 years ago in Pennsylvania. Nitroglycerine is placed in a well and exploded to fracture.
Industry:Oil & gas
A packer that can be pulled out of the well to be repaired or replaced.
Industry:Oil & gas
The course of drilling fluid downward through the annulus and upward through the drill stem, in contrast to normal circulation in which the course is downward through the drill stem and upward through the annulus. Seldom used in open hole, but frequently used in workover operations.
Industry:Oil & gas
