دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the prevent sticking joint that connected the top of fishing tool.

chemicals which prevent hydrate crystals from sticking together and forming a larger mass.

n: This schlumberger module provides direct measurements of wellbore fluid resistivity and temperature, also cable tension below the toolstring head. Useful to run in poor hole condition;should allow differentiation of differential sticking and keyseat stic

n: A kind of explosive package used for breakouting pack of dynamic. It is sent by cable to first thread above the sticking point. Pull the drill stem and rotate left the

n: The operation that joins the driving stem to pick up drill stem and circulate the drilling fluid when touch sticking

n: jamming or wedging of the drill string in the borehole by sand or shale that is driven uphole by formation fluids during a blowout.

n: a device made up in the drill string that, when actuated, de- livers a heavy downward blow to the string. A bumper jar has a hollow body that moves upward when the drill string is picked up. When the string is dropped quickly, the jar body produces a sharp downward blow on the tubing or pipe made up below the jar. If downward blows can free a fish, a bumper jar can be very effective.

n: Made by upwardness, lower part of the body and joint. The upwardness and lower part of the body are connected with plain bearing. The operating principle of it is the same with bumper sub. Used to handle sticking when the drill bit is not at the bottom.

n: see flocculation.

n: In drilling-fluid terminology, a synonym for Flocculation


forming a larger mass from smaller ones by collision and sticking together.