- Industria: 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.
An instrument that reports the performance of a control device or signals if unusual conditions appear in a system.
Industry:Oil & gas
A tool used in drilling to smooth the wall of a well, enlarge the hole to the specified size, help stabilise the bit, straighten the wellbore if kinks or doglegs are encountered, and drill directionally.
Industry:Oil & gas
A survey that uses a radioactive tracer such as a gas, liquid, or solid having a high gamma ray emission. When the material is injected into any portion of the wellbore, the point of placement or movement can be recorded by a gamma ray instrument. The tracer log is used to determine channelling or the travel of squeezed cement behind a section of perforated casing.
Industry:Oil & gas
A fluid used in the fracturing process (for example, a method of stimulating production by opening new flow channels in the formation surrounding a production well). Under extremely high hydraulic pressure, frac fluids (such as distillate, diesel fuel, crude oil, dilute hydrochloric acid, water, or kerosene) are pumped downward through production tubing or drill pipe and forced out below a packer or between two packers. The pressure causes cracks to open in the formation, and the fluid penetrates the formation through the cracks. Sand grains, aluminium pellets, walnut shells, or similar materials (propping agents) are carried in suspension by the fluid into the cracks. When the pressure is released at the surface, the fracturing fluid returns to the well but leaves behind the propping agents to hold open the formation cracks.
Industry:Oil & gas
The derrickhand’s working platform. As pipe or tubing is run into or out of the hole, the derrickhand must handle the top end of the pipe, which may be as high as 90 feet (27 meters) or higher in the derrick or mast.
Industry:Oil & gas
A pump with an impeller or rotor, an impeller shaft, and a casing, which discharges fluid by centrifugal force. An electric submersible pump is a centrifugal pump.
Industry:Oil & gas
A crack or crevice in a formation, either natural or induced. See hydraulic fracturing.
Industry:Oil & gas
A procedure by which acid is forced into a formation under pressure high enough to cause the formation to crack. The acid acts on certain kinds of formations, usually carbonates, to increase the permeability of the formation. Also called acid fracturing.
Industry:Oil & gas
A work shift that generally begins at or near midnight. See graveyard tour.
Industry:Oil & gas
A hand tool used to tighten or loosen pipe, consisting of a handle and chain that resembles the chain on a bicycle.
Industry:Oil & gas
