- 産業: Oil & gas
- Number of terms: 8814
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A transform from raw log data chosen so that a log recorded in these units will give the correct porosity of the formation, providing the matrix is pure calcite and the pores are filled with fresh water. The unit, which may be in vol/vol or p. U. , is most commonly used for neutron porosity logs but may also be used for density and acoustic logs. The definition is strictly true only if all borehole and other environmental corrections have been applied.
Industry:Oil & gas
A transform from raw log data chosen so that a log recorded in these units will give the correct porosity of the formation providing the matrix is pure quartz and the pores are filled with fresh water. The unit, which may be in vol/vol or p. U. , is most commonly used for neutron porosity logs but may also be used for density and acoustic logs. The definition is strictly true only if all borehole and other environmental corrections have been applied.
Industry:Oil & gas
A tool-string component used with a burn shoe for washover operations. The wash pipe is a relatively large internal-diameter tubular that can be washed over a fish in preparation for engaging and retrieving the fish.
Industry:Oil & gas
A tool run on wireline to obtain fluid samples and measure formation pressures. This device is also called a wireline formation tester.
Industry:Oil & gas
A tool run on an electric logging cable that pushes a probe into the formation, which then allows production into a small closed chamber. The tool is primarily used to obtain formation pressures at chosen locations in an interval, and, with an accurate quartz gauge, permeability estimates may be obtained. Modern variations on this tool have been developed to acquire formation-fluid samples.
Industry:Oil & gas
A tool or assembly used to retrieve samples of fluids or fill material from the wellbore. Used as a treatment design aid, the retrieved samples can be checked for compatibility with the selected treatment fluid to verify performance or identify any undesirable reactions.
Industry:Oil & gas
A threaded adapter used to connect a circulating line to a casing or tubing string. A casing or tubing swage generally is required as a contingency option to enable any obstruction or fill to be circulated clear during the running process.
Industry:Oil & gas
A threaded coupling used to join two lengths of pipe such as production tubing, casing or liner. The type of thread and style of collar varies with the specifications and manufacturer of the tubing.
Industry:Oil & gas
A thread profile used on casing or liner tubulars. Buttress threads are square-cut and create a hydraulic seal through the interference fit of the mating threads.
Industry:Oil & gas
A thin, perforated pipe placed around the internal circumference of a tank. The purpose of the roll line is to agitate the contents of a tank.
Industry:Oil & gas
