دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

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.

v: to create holes in casing and cement set through a productive formation. A common method of completing a well is to set casing through the oil-bearing formation and cement it. A perforating gun is then lowered into the hole and fired to detonate high-powered jets or shoot steel projectiles (bullets) through the casing and cement and into the pay zone. The formation fluids flow out of the reservoir through the perforations and into the wellbore. See jetperforate, perforating gun.

v: to create holes through the casing with a shaped charge of high explosives instead of a gun that fires projectiles. The loaded charges are lowered into the hole to the desired depth. Once detonated, the charges emit short, penetrating jets of high- velocity gases that make holes in the casing and cement for some distance into the formation. Formation fluids then flow into the wellbore through these perforations. See bullet perforato1;gun-perforate.

n: a perforating gun that consists of a metallic strip OIl which encapsulated shaped charges are mounted. After the gun is fired, the strip is retrieved. See gun-perforate.

n: There has a metal ribben belt in the gun perforator,the belt can recovery after be used.