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US 6,668,918 B2Granted
Method and system for accessing subterranean deposit from the surface
AssigneeCDX Gas, LLC
InventorJoseph A. Zupanick
Life of this patent
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Abstract
Improved method and system for accessing subterranean deposits from the surface that substantially eliminates or reduces the disadvantages and problems associated with previous systems and methods. In particular, the present invention provides an articulated well with a drainage pattern that intersects a horizontal cavity well. The drainage patterns provide access to a large subterranean area from the surface while the vertical cavity well allows entrained water, hydrocarbons, and other deposits to be efficiently removed and/or produced.
Claims14
A subterranean drainage pattern for accessing an area of a subterranean zone, comprising:
- a first well bore extending substantially horizontally from a first end of the area in the subterranean zone to a second end of the area;
- a first plurality of three or more lateral well bores extending in spaced apart relation to each other from the first well bore to the periphery of the area on a first side of the first well bore;
- a second plurality of three or more lateral well bores extending in spaced apart relation to each other from the first well bore to the periphery of the area on a second, opposite side of the first well bore;
- and
- wherein the length of the lateral well bores progressively shorten on each side of the first well bore as a distance from the first end of the area increases.
2 more elements
Dependencies are inferred from the claim text.