دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: A tool for fishing casing.

n: see casing-patch tool.

any of several repair systems designed to set a patch over a leak in a well.

n: a short threaded nipple screwed into the open end of the coupling and over the threaded end of casing to protect the threads from dirt accumulation and damage. It is made of steel or plastic. Also called thread protector.

n: The nipple connected at casing collar to prevent pipe junction damaged.

n: a casing sub containing a seal bore and a left-handed thread;it is run as a crossover sub between casing sizes and to provide a tubing anchor.

n: the entire length of all the joints of casing run in a well. Most casing joints are manufactured to specifications established by API, although non-API specification casing is available for special situations. Casing manufactured to API specifications is available in three length ranges. A joint of range 1 casing is 16 to 25 feet (4.8 to 7.6 metres) long;a joint of range 2 casing is 25 to 34 feet (7.6 to 10.3 metres) long;and a joint of range 3 casing is 34 to 48 feet (10.3 to 14.6 metres) long. The out- side diameter of a joint of API casing ranges from 4Yz to 20 inches (11.43 to 50.8 centimetres).

n: The entire length of all the casing joints run into the borehole. Several different sizes of casing string may be required.

a continuous string of casing, usually cemented over at least part of its length and usually extending back to surface from the set point.

n: a special tool with a rubber packer or lead seal that is used to repair casing. When casing is damaged downhole, a cut is made below the damaged casing, the damaged casing and the casing above it are pulled from the well, and the damaged casing is removed from the casing string. The tool is made up and lowered into the well on the casing until it engages the top of the casing that remains in the well, and a rubber packer or lead seal in the tool forms a seal with the casing that is in the well. The casing-patch tool is an overshot1ike device and is sometimes called a casing overshot.

n: A kind of tool for casing with rubber packer or sealing. Used for repairing casing.

n: the height above the ground up to the base of the lowest layer of clouds when over half the sky is obscured.

formation binding agents (calcite, clay, silica overgrowth, heavy oil, etc.) that hold the formation grains together.

. abbr: the correction for pressure on liquid;a factor used during a proving run to adjust for pressure on the liquid in the prover and pipe.