Frac pulser system and method of use thereof

Patent metadata

Field	Value
Publication number	US-10914156-B2
Application number	US-201916426694-A
Country	US
Kind code	B2
Filing date	May 30, 2019
Priority date	May 30, 2019
Publication date	Feb 9, 2021
Grant date	Feb 9, 2021

Abstract

Provided is a downhole fracturing tool assembly, and a method for fracturing an oil/gas formation. The downhole fracturing tool assembly, in one aspect, includes a tool body, and a localized fracking system located within the tool body. In accordance with this aspect, the localized fracking system is designed to create a localized initial pulse of pressure sufficient to initiate a fracture of a subterranean zone of interest.

First claim

What is claimed is:

1. A downhole fracturing tool assembly, comprising:
a downhole fracturing tool including:
a tool body; and
a localized fracturing system located within the tool body, the localized fracturing system including a current initiated solid state propulsion device and configured to create a localized initial pulse of pressure sufficient to initiate a fracture of a subterranean zone of interest, wherein the localized fracturing system is further configured to create one or more localized subsequent pulses of pressure sufficient to extend the fracture of the subterranean zone of interest by varying an amount and a duration of a current provided to the current initiated solid state propulsion device.

2. The downhole fracturing tool assembly of claim 1 , further including an isolation assembly radially deployable from the tool body.

3. The downhole fracturing tool assembly of claim 1 , further including a perforator coupled to the tool body.

4. The downhole fracturing tool assembly of claim 3 , wherein the downhole fracturing tool assembly is deployed to the subterranean zone of interest via a wireline, and the perforator is a perforating gun assembly.

5. The downhole fracturing tool assembly of claim 3 , wherein the downhole fracturing tool assembly is deployed to the subterranean zone of interest via tubing, and the perforator is a hydrajet perforating assembly.

6. The downhole fracturing tool assembly of claim 1 , wherein the one or more localized subsequence pulses of pressure are created at varying frequencies that correspond with natural frequencies of the fracture as the fracture extends into the subterranean zone of interest.

7. The downhole fracturing tool assembly of claim 6 , further including a pressure sensor positioned proximate the tool body.

8. The downhole fracturing tool assembly of claim 7 , wherein the pressure sensor is a fiber-optic pressure sensor.

9. The downhole fracturing tool assembly of claim 7 , wherein the pressure sensor is configured to detect the natural frequencies of the fracture as the fracture extends into the subterranean zone of interest.

10. A method for fracturing an oil/gas formation, comprising:
deploying a downhole fracturing tool assembly within a wellbore to a subterranean zone of interest, the downhole fracturing tool assembly including a downhole fracturing tool having a tool body and a localized fracturing system located within the tool body, wherein the localized fracturing system includes a current initiated solid state propulsion device;
creating a localized initial pulse of pressure sufficient to initiate a fracture of the subterranean zone of interest; and
creating one or more localized subsequent pulses of pressure sufficient to extend the fracture of the subterranean zone of interest by varying an amount and a duration of a current provided to the current initiated solid state propulsion device.

11. The method of claim 10 , wherein the downhole fracturing tool assembly further includes an isolation assembly radially deployable from the tool body, and further including isolating a portion of the wellbore below the subterranean zone of interest using the isolation assembly.

12. The method of claim 10 , wherein the downhole fracturing tool assembly further includes a perforator coupled to the tool body, and further including perforating the subterranean zone of interest using the perforator prior to creating the localized initial pulse of pressure.

13. The method of claim 12 , wherein the deploying the downhole fracturing tool assembly includes deploying the downhole fracturing tool assembly via a wireline, and the perforator is a perforating gun assembly.

14. The method of claim 10 , wherein the deploying the downhole fracturing tool assembly includes deploying the downhole fracturing tool assembly via tubing, and the perforator is a hydrajet perforating assembly.

15. The method of claim 10 , wherein the one or more localized subsequence pulses of pressure are created at varying frequencies that correspond with natural frequencies of the fracture as the fracture extends into the subterranean zone of interest.

16. The method of claim 15 , wherein the downhole fracturing tool assembly further includes a pressure sensor positioned proximate the tool body, and further including detecting the natural frequencies of the fracture as the fracture extends into the subterranean zone of interest using the pressure sensor.

17. A downhole fracturing tool assembly, comprising:
a downhole fracturing tool including:
a tool body; and
a localized fracturing system located within the tool body, wherein the localized fracturing system is a ball-release fluid hammer actuator device configured to create a localized initial pulse of pressure sufficient to initiate a fracture of a subterranean zone of interest.

18. The downhole fracturing tool assembly of claim 17 , wherein the ball-release fluid hammer actuator device is further configured to create one or more localized subsequent pulses of pressure to extend the fracture of the subterranean zone of interest.

19. The downhole fracturing tool assembly of claim 18 , wherein the one or more localized subsequent pulses of pressure are created at varying frequencies that correspond with natural frequencies of the fracture as the fracture extends into the subterranean zone of interest.

20. The downhole fracturing tool assembly of claim 18 , further including a pressure sensor positioned proximate the tool body.

21. The downhole fracturing tool assembly of claim 20 , wherein the pressure sensor is configured to detect the natural frequencies of the fracture as the fracture extends into the subterranean zone of interest.

22. A method for fracturing an oil/gas formation, comprising:
deploying a downhole fracturing tool assembly within a wellbore to a subterranean zone of interest, the downhole fracturing tool assembly including a tool body and a localized fracturing system located within the tool body, wherein the localized fracturing system is a ball-release fluid hammer actuator device; and
creating a localized initial pulse of pressure sufficient to initiate a fracture of the subterranean zone of interest using the ball-release fluid hammer actuator device.

23. The method of claim 22 further comprising creating one or more localized subsequent pulses of pressure sufficient to extend the fracture of the subterranean zone of interest using the ball-release fluid hammer actuator device.

24. The method of claim 23 , wherein the one or more localized subsequence pulses of pressure are created at varying frequencies that correspond with natural frequencies of the fracture as the fracture extends into the subterranean zone of interest.

25. The method of claim 24 , wherein the downhole fracturing tool assembly further includes a pressure sensor positioned proximate the tool body, and further including detecting the natural frequencies of the fracture as the fracture extends into the subterranean zone of interest using the pressure sensor.

Assignees

• Halliburton Energy Services Inc

Inventors

• Coats Alan
• Stephenson Stanley V
• Hunter Tim H
• Surjaatmadja Jim Basuki

Classifications

• E21B47/06

  Measuring temperature or pressure · CPC title

• E21B43/263 Primary

  using explosives · CPC title

• E21B43/261

  Separate steps of (1) cementing, plugging or consolidating and (2) fracturing or attacking the formation · CPC title

• E21B43/114

  Perforators using direct fluid action {on the wall to be perforated}, e.g. abrasive jets · CPC title

• E21B43/267 Primary

  reinforcing fractures by propping · CPC title