Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
David S. Wesson0
Kevin R. George0
John T. Hardesty0
James A. Rollins0
Date of Patent
May 16, 2017
0Patent Application Number
148404730
Date Filed
August 31, 2015
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An apparatus and method for providing a time delay in injection of pressured fluid into a geologic formation. The apparatus comprises 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.
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