دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

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: See casing gun.

n: See drill collar perforator.

n: a kind of perforating tool for drill collar with a thick wall,using the chemical called BrF3

n: a kind of flexible bullet gun which is made form glass,aluminium or ceramics and whose charge strip is fixed on the two parallel steel wire

n: a previously common method of completion a well was to set casing is the oil bearing formation and cement it at depth. The casing is the gun perforated by a device that is lowered in the hole and fires steel projectiles through the casing and into the pay

n: the shoot that using high explosional dynamical shoot to instead of the common shoot.

v: to pierce the casing wall and cement of a wellbore to provide holes through which formation fluids may enter or to provide holes in the casing so that materials may be introduced into the annulus between the casing and the wall of the borehole. Perforating is accomplished by lowering into the well a perforating gun, or perforator, which fires electrically detonated bullets or shaped charges. See bullet perforator;jet-perforate, perforating gun.

n: to pierce the casing wall and cement,allowing formation fluids to enter the wellbore and flow to surface. This is a critical stage in the completion of a well. Perforating may also be carried out during workover operations.