- Industry: Education; Oil & gas
- Number of terms: 4495
- Number of blossaries: 0
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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.
1. a small portion of a formation obtained by using a core barrel and core bit in an existing wellbore. See core bit. 2. a spot sample of the contents of an oil or oil product storage tank usually obtained with a thief, or core sampler, at a given height in the tank.
Industry:Oil & gas
To create holes through the casing with a shaped charge of high explosives instead of a gun that fires projectiles. The loaded charges are lowered into the hole to the desired depth. Once detonated, the charges emit short, penetrating jets of high-velocity gases that make holes in the casing and cement for some distance into the formation. Formation fluids then flow into the wellbore through these perforations. See bullet perforator, gun-perforate.
Industry:Oil & gas
A measuring instrument run inside casing to obtain an indication of the presence or absence of hydrocarbons outside the casing, to determine water saturation in a reservoir behind casing, to detect water movement in the reservoir, to estimate porosity, and to estimate water salinity.
Industry:Oil & gas
The process of cutting a vertical, cylindrical sample of the formations encountered as a well is drilled.
Industry:Oil & gas
A special cased hole logging method that uses radioactivity reaction time to obtain measurements of water saturation, residual oil saturation, and fluid contacts in the formation outside the casing of an oil well.
Industry:Oil & gas
The performance of one or more of a variety of remedial operations on a producing well to try to increase production. Examples of workover jobs are deepening, plugging back, pulling and resetting liners, and squeeze cementing. See recompletion.
Industry:Oil & gas
A bit that does not drill out the centre portion of the hole, but allows this centre portion (the core) to pass through the round opening in the centre of the bit and into the core barrel.
Industry:Oil & gas
A machine part in which a rotating shaft (a journal) revolves or slides. Also called a plain bearing.
Industry:Oil & gas
A device that increases the pressure on a fluid or raises it to a higher level. Various types of pumps include the bottom hole pump, centrifugal pump, hydraulic pump, jet pump, mud pump, reciprocating pump, rotary pump, sucker rod pump, and submersible pump.
Industry:Oil & gas
