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US 2019/0316435 A1Published application
Whipstock assembly for forming a window
AssigneeWeatherford Technology Holdings, LLC
InventorJames H. TAYLOR, JR.
Life of this patent
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Abstract
A whipstock assembly includes an inner body having a bore and an inclined surface at an upper portion; and an outer body disposed around the inner body and releasably attached to the inner body, the outer body having an inclined surface and an upper portion closed to fluid communication.
Claims20
A whipstock assembly, comprising:
- an inner body having a bore and an inclined surface at an upper portion;
- and
- an outer body disposed around the inner body and releasably attached to the inner body, the outer body having an inclined surface and an upper portion closed to fluid communication.
A method for forming a window in a wellbore, comprising:
- lowering a work string having a drilling member, a whipstock assembly, a sealing element, and an anchor, wherein the whipstock assembly includes an outer body releasably attached to an inner body.
- setting the sealing element and the anchor;
- releasing the drilling member from the whipstock assembly;
- moving the drilling member along an inclined surface of the outer body to form the window;
- releasing the outer body from the inner body;
- and
- moving a downhole tool along an inclined surface of the inner body.
4 more elements
A downhole tool for use in forming a lateral wellbore, comprising:
- a whipstock assembly, having:
- an inner body having a bore and an inclined surface at an upper portion;
- and
- an outer body disposed around the inner body and releasably attached to the inner body, the outer body having an inclined surface;
- a sealing element coupled to the whipstock assembly;
- and
- an anchor coupled to the whipstock assembly, the anchor having a bore in fluid communication with the bore of the inner body.
4 more elements
Dependencies are inferred from the claim text.