Window milling systems with expandable blades for securing a whipstock assembly and method of use

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9556696
APP PUB NO 20140251615A1
SERIAL NO

14172011

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A window milling system can include a window mill having selectively retractable and extendable blades, and a whipstock assembly having a receptacle therein, the window mill being secured relative to the whipstock assembly the blades are received in the receptacle. A method of cutting a window through a wellbore lining can include cutting through the lining with a window mill, then retracting blades of the window mill, and then outwardly extending the blades in a whipstock assembly, thereby securing the whipstock assembly to the window mill. A window mill can include multiple blades adapted for cutting through a wellbore lining, the blades being outwardly extendable relative to a body of the window mill in a well. Another method of cutting a window through a wellbore lining can include a window mill drilling a wellbore outward a substantial distance from the window after the window mill cutting through the lining.

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Patent Owner(s)

  • HALLIBURTON ENERGY SERVICES, INC.

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dancer, William W Little Elm, US 3 16
Donovan, Stacey B Fort Worth, US 2 9

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