- Industry: Oil & gas
- Number of terms: 8814
- Number of blossaries: 0
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A valve that is connected to the work string in the event that the well starts to flow when running or retrieving the string. A stabbing valve generally is kept on the rig floor as a contingency against unexpected well flow. On snubbing operations, a stabbing valve, or safety valve, is kept in the workbasket to protect against tubing plug or backpressure valve failure.
Industry:Oil & gas
A valve located on the side of a Christmas tree or temporary surface flow equipment, such as may be used for a drillstem test. Two wing valves are generally fitted to a Christmas tree. A flowing wing valve is used to control and isolate production, and the kill wing valve fitted on the opposite side of the Christmas tree is available for treatment or well-control purposes. The term wing valve typically is used when referring to the flowing wing.
Industry:Oil & gas
A valve located on the Christmas tree that controls all flow from the wellbore. A correctly functioning master valve is so important that two master valves are fitted to most Christmas trees. The upper master valve is used on a routine basis, with the lower master valve providing backup or contingency function in the event that the normal service valve is leaking and needs replacement.
Industry:Oil & gas
A valve installed in the wellhead assembly to provide access to the casing annulus of non-producing casings.
Industry:Oil & gas
A value that reflects the number of perforations per unit of length (usually feet) that are producing, or injecting, efficiently. Perforation efficiency may be compromised by gun failure or charge misfire, perforation debris, excessive standoff or poor orientation, or by combinations of these. The effective shot density may be used in treatment design models or to calculate likely productivity response.
Industry:Oil & gas
A unit used to remove minute water particles from natural gas if dehydration was not attained using separators. A glycol dehydrator unit is usually composed of an absorber and a reboiler. <br><br>The wet gas enters at the bottom of the absorber. As the wet gas percolates upward, it releases its water into the glycol solution and dry gas is obtained at the top of the absorber. <br><br>When the glycol solution becomes saturated with water, the glycol solution is pumped through a reboiler, also called a reconcentrator, which boils the glycol-water mixture and separates the glycol from the water. After separation, the glycol can return to the absorber to contact additional wet gas.
Industry:Oil & gas
A unit of measurement for the corrosion rate of a coupon, abbreviated as mpy. A mil is one thousandth of an inch.
Industry:Oil & gas
A unit of measurement for large volumes of natural gas, abbreviated Bcf.
Industry:Oil & gas
A unit equal to the percentage of a given fluid in the total volume of a pore space. The term is abbreviated to s. U. And lies between 0 and 100.
Industry:Oil & gas
A unit equal to the percentage of pore space in a unit volume of rock. It is abbreviated to p. U. And lies between 0 and 100.
Industry:Oil & gas
