[12] Patent
[11] Patent No.:GC0007574  
[45] Date of Publishing the Grant of the Patent: 30/Apr /2018                48/2018  
Number of the Decision to Grant the Patent:2018/126007
Date of the Decision to Grant the Patent:15/Apr/2018

[21] Application No.:GC 2014-28370

[22] Filing Date:23/11/2014

[30] Priority:

[33] State [32] Priority date [31] Priority No.
US
27/11/2013
14/091,677

[72] Inventors:1- Harold D. Brannon،2- Jimie DeVon Lemons

[73] Owner: Baker Hughes Incorporated, 2929 Allen Parkway, Suite 2100Texas 77019 , Houston, USA

[74] Agent: Saba & Co. T.M.P

  

 

  

[51]IPC:
Int. Cl.: E21B 43/247, 43/26 (2006.01)

[56] Cited Documents:

-US 5273115 A (SPAFFORD, STEPHEN D.) 28 December 1993
-US 2011-0220363 A1 (GUPTA et al.) 15 September 2011
-US 2013-0186625 A1 (O‘MALLEY, EDWARD J.) 25 July 2013
-US 2008-0200352 A1 (WILLBERG et al.) 21 August 2008
-US 2013-0146291 A1 (O‘MALLEY, EDWARD J.) 13 June 2013

 
Examiner: Eng. Mohammed A. AlShamrani

[54] SYSTEM AND METHOD FOR RE-FRACTURING MULTIZONE HORIZONTAL WELLBORES
[57] Abstract: A packer on a tubing string and diverting material pumped down the tubing string may be used isolate a fracture cluster in a multizone horizontal wellbore that has been previously hydraulically fractured. Once hydraulically isolated, fluid may be pumped down the tubing string to re-fracture the previously fractured fracture cluster in an effort to increase hydrocarbon production from the horizontal wellbore. The tubing string may include a testing device used to determine whether a specific fracture cluster within the horizontal wellbore should be re-fractured. Diverting material may be pumped down the tubing string and positioned adjacent a fracture cluster to hydraulically isolate the fracture cluster during the re-fracturing process. The diverting material may be cleaned out of the horizontal wellbore after all desired fracture clusters along the horizontal wellbore have been individually re-fractured.
No. of claims: 20     No. of figures: 11


 

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