The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9328600 B1

PDF
Full Text
Expired
Date of Patent:
May. 03, 2016

Filed:

Oct. 19, 2011
Applicants:

Robert D. Kaminsky, Houston, TX (US);

Abdel Wadood M. El-rabaa, Plano, TX (US);

Inventors:

Robert D. Kaminsky, Houston, TX (US);

Abdel Wadood M. El-Rabaa, Plano, TX (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 43/267 (2006.01);
U.S. Cl.
CPC ...
E21B 43/267 (2013.01);
Abstract

A method for hydraulically fracturing subterranean formations in a manner resulting in improved propping of fractures, particularly in ductile rock formations such as gas-containing shales having a high clay content. The method allows for improved hydrocarbon production. The method involves injecting a first fluid having a first proppant concentration into the subsurface formation to form a fracture, reducing the pressure in the fracture and allowing the fracture to substantially close, and injecting a second fluid having a second proppant concentration into the fracture to re-open the fracture. The second proppant concentration is greater than the first proppant concentration. A portion of the proppant is effectively retained in the reopened fracture.


Find Patent Forward Citations

Kaminsky, Robert. (2016). Double hydraulic fracturing methods (U.S. Patent No. 9328600). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9328600

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