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.:
Date of Patent:
Nov. 27, 2018
Filed:
Aug. 31, 2015
Applicant:
Geodynamics, Inc., Millsap, TX (US);
Inventors:
Raymond C. Shaffer, Burleson, TX (US);
John T. Hardesty, Weatherford, TX (US);
Assignee:
GEODYNAMICS, INC., Millsap, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/10 (2006.01); E21B 43/116 (2006.01); E21B 37/00 (2006.01); E21B 34/06 (2006.01); E21B 34/00 (2006.01);
U.S. Cl.
CPC ...
E21B 34/108 (2013.01); E21B 34/063 (2013.01); E21B 37/00 (2013.01); E21B 43/116 (2013.01); E21B 2034/007 (2013.01);
Abstract
An apparatus and method for providing a time delay in injection of pressured fluid into a geologic formation. In one aspect the invention is a toe valve activated by fluid pressure that opens ports after a predetermined time interval to allow fluid to pass from a well casing to a formation. The controlled time delay enables casing integrity testing before fluid is passed through the ports. This time delay also allows multiple valves to be used in the same well casing and provide a focused jetting action to better penetrate a concrete casing lining.