دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

a vent in the tubing or treating string open by a drop bar used to fire a perforating gun.

a detonating cap between two detonating cords in a series of perforating guns.

a device in a perforating gun that signals through a delayed shot or sound that the detonating cord has fired to the bottom of a gun.

n pI: the devices loaded into perforating guns to penetrate casing and cement and for some distance into the formation when the guns are fired. See gunperforate.

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: a powerful, highly explosive material (cyclo-trimethylene-trinitramine) used as the main charge in jet perforating guns. Also called RDX. See jet-perforate.

another name for RDX explosive.

explosive wrapped with elastomer in the shape of a cord. Used to link and detonate charges in perforating guns.

n: a perforating gun that consists of a metal strip on which are mounted shaped charges in special capsules. After firing, nothing remains of the gun but debris. See gun-perforate.

n: a perforating gun that consists of a hollow, cylindrical carrier into which are placed shaped charges. On detonation, debris created by the exploded charges falls into the carrier and is retrieved when the gun is pulled out of the hole;however, the gun cannot be re-used. See gun-perforate.

a perforating gun with exposed charge capsules.