Localized fracturing system and method
AssigneeBaker Hughes Incorporated
InventorsTom Butler, Daniel Alberts, Jeff Honekamp, Martin Craighead
Life of this patent
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Abstract
A method and apparatus useful for fracturing subterranean formations with ultra high fluid pressure. The apparatus is capable of producing isolated pressure in a formation surrounding a primary wellbore, sufficient pressure is included within the formation for creating a fracture at the edge of the perforation. The apparatus is comprised of a motor, pump, and nozzle, where the entire apparatus can be disposed within the borehole. The apparatus can be conveyed within the borehole via wireline, coil tubing, slickline, or other tubing. Alternatively, a drill bit can be included for creating the perforation just prior to the fracturing procedure.
Claims22
A method of introducing a fluid into a subterranean formation comprising:
- deploying a pressurizing system within a wellbore on a wireline, wherein the pressurizing system comprises a housing, motor in the housing, a pump in the housing and coupled to the motor;
- sealing a region of the wellbore;
- driving the pump by actuating the motor;
- pressurizing wellbore fluid within the wellbore with the pump;
- discharging the pressurized fluid into the sealed region of the wellbore;
- and
- pressurizing the sealed region of the wellbore with the discharge of pressurized fluid to fracture the subterranean formation.
A well fracturing system comprising:
- a housing disposable in the well;
- a wireline attached to the housing;
- a seal selectively set between the housing and the well, so that when the seal is set a sealed region is defined in the well;
- an electric motor in the housing;
- and
- a pump connected to the motor, the pump comprising;
- an inlet in fluid communication with wellbore fluid in the well;
- and
- a discharge in fluid communication with the sealed region and at a pressure at least as great as the pressure for fracturing a subterranean formation.
A method of creating a fracture within a wellbore comprising:
- (a) providing a fracturing system comprising, a housing, an electric motor in the housing, a pump in the housing and coupled to the motor, a fluid inlet and outlet on the pump;
- (b) disposing the fracturing system within the wellbore on a wireline;
- (c) pressurizing fluid in the wellbore by driving the pump with the motor, receiving fluid in the wellbore at the pump inlet, pressurizing the fluid to a pressure sufficient to fracture a subterranean formation, and discharging pressurized fluid from the pump outlet;
- (d) storing said pressurized fluid in an accumulator;
- (e) discharging said stored pressurized fluid from the accumulator into the wellbore;
- and
- (f) fracturing a formation adjacent the wellbore with the pressurized fluid.
Dependencies are inferred from the claim text.