دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the temperature-sensing (detecting) element of a temperature-measuring device.

n: a tubular device that, when lowered to a selected depth within a well, fires bullets through the casing to provide holes through which the formation fluids may enter the wellbore.

n: A kind of tubing device, tripped in to the predetermined depth, ejecting bullet and breaking through cement stone and casing to form a passage of oil and gas.

n: 1. forcing gas back into a formation by pumping into the annulus from the surface.2. any pumping procedure in which fluid is pumped into the well against pressure.

forcing fluids in the pipe into the formation at a pressure higher than the pore pressure and sometimes higher than the fracturing breakdown pressure. Used to displace a kick out of the pipe when wellbore and wellhead pressure limits permits.

the weight of a string or piece of equipment immersed in the wellbore fluid. It is strongly dependent of the density of the wellbore fluid.

n: A kind of tool for handling downhole accident. Used to mill the casing and drill pipe which are stuck in the wellbore. See drill mill.

n: The valves that make vibrosieve short out. The drill fluid which returns from wellbore enters into circulating system directly without sieving handling.

n: The tool for fishing the junk in the wellbore in cable drilling.

n: A cylindrical barrel of which the valve is installed in the bottom. Bailing the cuttings and drilling fluid in the bottom by tripped into the wellbore by wire rope.

n: an instrument with two legs or jaws that can be adjusted for measuring linear dimensions, thickness, or diameters.

n: Used for measuring the diameter of wellbore or internal diameter of pipe (casing).

n: a record showing variations in wellbore diameter by depth, indicating undue enlargement due to caving in, washout, or other causes. The caliper log also reveals corrosion, scaling, or pitting inside tubular goods.

n: A tool run on wireline that measures the diameter of the wellbore. It may be used for detecting washouts, calculating cement volumes, or detecting internal corrosion of casing.

a recording of the diameter changes in a well made by a tool with mechanical arms that touch the wellbore or a sonic signal bouncing off the borehole wall.