- Industria: 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 adherence of casing to cement and cement to formation. When casing is run in a well, it is set, or bonded, to the formation by means of cement.
Industry:Oil & gas
a survey used to determine the injection profile, that is, to assign specific volumes or percentages to each of the formations taking fluid in an injection well. The injection log is also used to check for casing or packer leaks, proper cement jobs, and fluid migration between zones.
Industry:Oil & gas
a record of the resistivity of a formation. Usually obtained when an electric log is run. See resistivity well logging.
Industry:Oil & gas
an acoustic survey or sonic-logging method that records the quality or hardness of the cement used in the annulus to bond the casing and the formation. Casing that is well bonded to the formation transmits an acoustic signal quickly; poorly bonded casing transmits a signal slowly. See acoustic survey, acoustic well logging.
Industry:Oil & gas
water that is introduced into a reservoir to help drive hydrocarbons to a producing well.
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
to fill the annulus between the casing and wall of the hole with cement to support the casing and prevent fluid migration between permeable zones.
Industry:Oil & gas
a well through which fluids are injected into an underground stratum to increase reservoir pressure and to displace oil. Also called input well.
Industry:Oil & gas
a packer that can be pulled out of the well to be repaired or replaced.
Industry:Oil & gas
reaction with water that begins when water is added to powdered cement. The cement gradually sets to a solid.
Industry:Oil & gas
