Title:
SYSTEM AND METHOD OF FRACTURING WHILE DRILLING
Document Type and Number:
WIPO Patent Application WO/2013/096378
Kind Code:
A3
Abstract:
A system 20 for a drilling and fracturing a wellbore 22 in a single trip includes a drill string 26, drill bit 40, and a fluid flow means for delivering fluid through the string and drill bit 40. The drill bit 40 includes a body with cutting blades 42. and nozzles 46 between the cutting blades 42 for washing away drilling generated cuttings. A packer 62 on the drill bit 40 selectively seals with an inner surface of the wellbore 22 to form a space 64. Deploying the packer 62 at a designated spot in the wellbore 22 defines a fracturing zone Z in the wellbore 22. Closing the nozzles 46 while opening side ports on the body, delivers fracturing fluid into the space 64, A pressurizing system 20 can be included to pressurize the fluid so that pressure in the space 64 overcomes the formation strength and fractures the formation adjacent the enclosed space 64. The packer 62 can be released, drilling can resume, and fracturing can occur at a different depth in the wellbore 22.
Inventors:
ZHOU SHAOHUA (SA)
Application Number:
PCT/US2012/070481
Publication Date:
April 10, 2014
Filing Date:
December 19, 2012
Export Citation:
Assignee:
SAUDI ARABIAN OIL CO (SA)
ARAMCO SERVICES CO (US)
ARAMCO SERVICES CO (US)
International Classes:
E21B10/60; E21B7/00; E21B43/26
Foreign References:
| US20090145660A1 | 2009-06-11 | |||
| US20050230107A1 | 2005-10-20 | |||
| US20090151938A1 | 2009-06-18 | |||
| US20090095474A1 | 2009-04-16 | |||
| US20050011678A1 | 2005-01-20 |
Attorney, Agent or Firm:
RHEBERGEN, Constance, Gall (Bracewell & Giuliani LLPP.O.box 6138, Houston TX, US)
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