Method and system for accessing subterranean deposits from the surface and tools therefor
4 Assignments
0 Petitions
Accused Products
Abstract
According to one embodiment, a system for accessing a subterranean zone from the surface includes a well bore extending from the surface to the subterranean zone, and a well bore pattern connected to the junction and operable to drain fluid from a region of the subterranean zone to the junction.
132 Citations
30 Claims
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1-5. -5. (canceled)
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6. A system for accessing a subterranean zone from the surface, comprising:
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a substantially vertical well bore extending from the surface to the subterranean zone; an articulated well bore extending from the surface to the subterranean zone, the articulated well bore horizontally offset from the substantially vertical well bore at the surface and intercepting the substantially vertical well bore at a junction proximate to the subterranean zone; a substantially horizontal drainage pattern extending from the junction into the subterranean zone; and the subterranean zone comprising shale. - View Dependent Claims (7, 8, 9, 10)
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11. A system for accessing a subterranean zone from the surface, comprising:
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a first well bore extending from the surface to the subterranean zone; a second well bore extending from the surface to the subterranean zone; the first and second well bores coupled to each other at a junction proximate the subterranean zone; a drainage well bore coupled to the junction in the subterranean zone; and the subterranean zone comprising shale. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for accessing a subterranean shale zone from the surface, comprising:
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drilling a substantially vertical well bore extending from the surface to the subterranean shale zone; drilling an articulated well bore from the surface to the subterranean shale zone, the articulated well fore intercepting the substantially vertical well bore at a junction proximate to the subterranean shale zone; and drilling a substantially horizontal drainage pattern extending from the junction into the subterranean shale zone. - View Dependent Claims (21, 22, 23, 24, 25)
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26. A system for accessing a subterranean zone from the surface, comprising:
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a substantially vertical well bore extending from the surface to the subterranean zone; an articulated well bore extending from the surface to the subterranean zone, the articulated well bore horizontally offset from the substantially vertical well bore at the surface and intercepting the substantially vertical well bore at a junction proximate to the subterranean zone; a substantially horizontal drainage pattern extending from the junction into the subterranean zone; and the subterranean zone comprising a low permeability zone. - View Dependent Claims (27, 28, 29, 30)
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Specification