دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a very short piece of pipe threaded its entire length.

n: A piece of nipple which is bited with thread in full length. Used for double flange device to adjust the distance between flanges.

testing the well into a chamber open at the bottom, but closed at the surface. Fluid entering the wellbore is equal to the fluid production minus the gas volume charge. A material balance approach.

n: I. the vertical distance between the top of an anticline., or dome, and the bottom, an indication of the amount of producing formation that may be expected. 2. the process of closing down a site, such as plugging and abandoning a well or filling in a pit.

n: the shortest horizontal distance from a particular survey station back to the reference point

n: The component installed in the vibrosieve used to filter solid particle from drilling fluid.

n: a coupling used to connect and disconnect a driving and a driven part of a mechanism, especially a coupling that permits the former part to engage the latter gradually and without shock. In the oilfield, a clutch permits gradual engaging and disengaging of the equipment driven by a prime mover. v: to engage or disengage a clutch.

secondary recovery technique for oil. The carbon dioxide gas is injected and alternated with water. CO2 lowers the viscosity of most oils, but may trigger severe asphaltene and scale precipitates.

n: a gap or flaw in pipe coating. Coating flaws, which must be repaired to prevent corrosion problems, are detected through mechanical or visual inspections of the line. Also called holiday.

n: the increment in volume of a unit volume of solid, liquid, or gas for a rise of temperature of I at constant pressure. Also called coefficient of cubical expansion, coefficient of thermal expansion, expansion coefficient, expansivity.

n: the attractive force between the same kinds of molecules (i.e., the force that holds the molecules of a substance together). exchangers. In more complex installations, a tube bundle is used instead of a coil.

n: The attractive forces between molecules of the same kind, that is, the force that holds the molecules of a substance together.


a force that holds fluids and sand grains together. The force is generated by attraction at the molecular level. Cohesion is often used to describe sand grains stuck together by a low viscosity fluid such as oil or water, although this is better explained