دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: A kind of wash over fishing tool. The slip grip which is used to wash over and fish the pipe stick in the wellbore is installed in the washover pipe.

a backlash of tongs that results in a grip in the wrong direction.

n: an expandable, cylindrically shaped gripping mechanism that is fitted into an overshot to retrieve fish from the borehole. See grapple.

a conditional surface pressure barrier often consisting of a set of hydraulically operated rams containing equipment designed to grip pipe, seal around pipe, shear off pipe or seal an open hole during drilling or a workover. It may also contain an annular

n: a part of the brake mechanism consisting of a flexible steel band lined with a material that grips a drum when tightened. On a drilling rig, the brake band acts on the flanges of the drawworks drum to control the lowering of the travelling block and its load of drill pipe, casing, or tubing.

n: Bourdon plate whose inner surface is installed with several brake blocks at definite interval.

n: the part of the brake that presses on the brake drum. On the drawworks, the circular series of brake blocks are bolted to the brake bands with counter- sunk brass bolts;the lining is the frictional, or gripping, element of a mechanical brake.

n: Refers to the lining of brake staple which is consisted of a set of brake blocks. Fixed in the inner surface of brake staple with head aluminium screw. Brake lining stops when the surface of brake holds the brake drum.

n: a perforating gun run into the casing string. Most perforating guns are run into the well through the tubing string. casing hanger n: a circular device with a frictional gripping arrangement of slips and packing rings used to suspend casing from a casinghead in a well.

n: A device installed with shaped charge or bulletfor, used for casing perforating.

a large perforating gun, run into a well without tubing.

n: an external gripping tool that allows direct circulation through the tool and the fish to keep the wellbore lubricated during fishing. See overshot.

a wireline set plug without a profile. It is set in a coupling and grips with packer-like slips.

n: a manually operated device that is used to tighten guy wires or move heavy loads. Usually, a come-along is a gripping tool with two jaws attached to a ring so that, when the ring is pulled, the jaws close.

n: A kind of manual operated clamping apparatus used to tighten derrick guy wire.