HYDRAULIC DELAY TOE VALVE SYSTEM AND METHOD

(19)

(11)

EP 3 138 993 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	19.04.2017 Bulletin 2017/16

(43)	Date of publication A2:
	08.03.2017 Bulletin 2017/10

(21)	Application number: 16185314.8

(22)	Date of filing: 23.08.2016

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International Patent Classification (IPC):

E21B 34/06^(2006.01)
E21B 34/14^(2006.01)

E21B 34/10^(2006.01)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
	Designated Extension States:
	BA ME
	Designated Validation States:
	MA MD

(30)

Priority:

31.08.2015 US 201514840473

(71)	Applicant: Geodynamics, Inc.
	Millsap, TX 76066 (US)

(72)	Inventors:
	George, Kevin R. Millsap, TX Texas 76066 (US) Rollins, James A. Millsap, TX Texas 76066 (US) Hardesty, John T. Millsap, TX Texas 76066 (US) Wesson, David S. Millsap, TX Texas 76066 (US)

(74)	Representative: Gosnall, Toby
	Barker Brettell LLP 100 Hagley Road Edgbaston Birmingham B16 8QQ Edgbaston Birmingham B16 8QQ (GB)

(54)	HYDRAULIC DELAY TOE VALVE SYSTEM AND METHOD

(57) 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.

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