Gun-perforate:

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 perforating gun.

Terms Related to Gun-perforate

• Perforating gun

  A device fitted with shaped charges or bullets that is lowered to the desired depth in a well and fired to create penetrating holes in ...

• Perforate

  To pierce the casing wall and cement to provide holes through which formation fluids may enter or to provide holes in the casing so that ...

• Perforation

  A hole made in the casing, cement, and formation through which formation fluids enter a wellbore. Usually several perforations are made at a time.

• Shaped charge

  A relatively small container of high explosive that is loaded into a perforating gun. On detonation, the charge releases a small, high-velocity stream of particles ...

• Bullet perforator

  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 ...

• Bradenhead squeeze

  A process used to repair a hole in the casing by pumping cement down tubing or drill pipe. First, the casinghead, or bradenhead, is closed ...

• Casing pack

  A means of cementing casing in a well so that the casing may, if necessary, be retrieved with minimum difficulty. A special mud, usually an ...