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US 9,068,441 B2Granted
Perforating stimulating bullet
AssigneeBaker Hughes Incorporated
InventorTimothy Sampson
Life of this patent
Estimating the term…
Abstract
A method and device for fracturing a subterranean formation by projecting a bullet assembly into the formation and then reacting energetic material within the bullet assembly. The bullet assembly can be part of a charge device that is in a perforating gun. A delay fuse can be included so the energetic material reaction begins after the bullet assembly reaches the end of its travel in the formation.
Claims14
A charge device for use in fracturing formation adjacent a wellbore comprising:
- a housing;
- an explosive in the housing;
- and
- a bullet assembly in the housing comprising
- a jacket having a forward end, a rearward end, and sidewalls between the forward end and rearward end that define a cavity within,
- energetic material disposed in the cavity and energetic energy that is disposed within material of the jacket, and
- a delay fuse in selective communication with the energetic material, so that a detonation wave forms and directs the bullet assembly into the formation when the explosive in the housing is detonated and a reaction of the energetic material is initiated by the delay fuse when the bullet assembly is in the formation to form a fracture in the formation.
4 more elements
A method of fracturing a subterranean formation comprising:
- a. providing a bullet assembly comprising a jacket made from a material that comprises an energetic material, a cavity in the jacket, energetic material in the cavity, and a delay fuse;
- b. disposing the bullet assembly in a wellbore;
- c. detonating an explosive to launch the bullet assembly from the wellbore a distance into the formation thereby producing a perforation in the formation;
- and
- d. reacting the energetic material after the bullet assembly is launched a distance into the wellbore to generate pressure within the formation to generate an elongated fracture in the formation that extends past an end of the perforation.
2 more elements
Dependencies are inferred from the claim text.