دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a device machined internally to receive the movable locking devices used to position. lock. and seal subsurface production controls in tubing. A landing nipple provides a seat at a known depth into which various types of retrievable flow control equipment can be set. Also called a seating nipple.

n: 1.Any short piece of pipe, especially if threaded at both ends with male threads. 2.A completion component fabricated as a short section of heavy wall tubular with a machined internal surface that provides a seal area and a locking profile. Landing nipple

a nipple profile that contains a specific profile with a lock and a polished bore for sealing.

n: a dial-indicating temperature instrument with an automatic locking device for the indicator, which ensures that the indication cannot change until the reading has been taken and the instrument reset.

n: see rotary locking device. locking mandrels n pi: slickline tools with slips and rubber cups to contain pressure and pack-off tubing in wells not equipped with landing nipples.

n: notches or slots machined into the table part of a rotary table assembly into which a bar on the rotary table assemblys locking device fits to keep the table from turning. See rotary locking device, rotary table assembly.

n: on a rotary table, a steel pin, often spring-loaded, that, when engaged, fits into one of several notches machined onto the perimeter of the rotary assemblys turntable. When engaged, the lock prevents the turntable from turning.

n: a rotating machine housed primarily inside a rectangular steel box with an opening in the middle for the kelly and the drill pipe that creates and transfers the turning motion for rotary drilling;parts of the assembly include the base, rotary table, master bushing, driveshaft assembly, drawworks sprockets, driveshaft sprockets, and locking devices.

n: a small mechanical brake for the rotary table made of an iron rod and a notched wheel;its function is to stop the turning movement of the rotary table and hold it securely while the crew makes or breaks a connection or performs other jobs.

n: a special threadless tool joint for large-diameter pipe, especially conductor pipe, sometimes used on offshore drilling rigs. When the box is brought down over the pin and weight is applied, a locking device is actuated to seat the joints. Because no rotation is required to make up these joints, their use can save time when the conductor pipe is being run. Squnch Joint is a registered trademark of the manufacturer.