Method and system for accessing subterranean deposits from the surface
First Claim
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1. A system for surface production of gas from a coal seam, comprising:
- a well bore;
a substantially horizontal well bore formed through the well bore, the substantially horizontal well bore in a coal seam and operable to conduct water and gas from the coal seam to a well bore junction;
the well bore junction proximate to the coal seam and horizontally offset from the well bore, the well bore junction operable to collect water from the substantially horizontal well bore for production to the surface; and
a pump operable to pump water from the well bore junction to the surface.
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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.
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Citations
18 Claims
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1. A system for surface production of gas from a coal seam, comprising:
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a well bore; a substantially horizontal well bore formed through the well bore, the substantially horizontal well bore in a coal seam and operable to conduct water and gas from the coal seam to a well bore junction; the well bore junction proximate to the coal seam and horizontally offset from the well bore, the well bore junction operable to collect water from the substantially horizontal well bore for production to the surface; and a pump operable to pump water from the well bore junction to the surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for surface production of gas from a coal seam, comprising:
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forming a well bore; forming a substantially horizontal well bore through the well bore, the substantially horizontal well bore in a coal seam and operable to conduct water and gas from the coal seam to a well bore junction horizontally offset from the well bore; conducting water and gas from a coal seam through the substantially horizontal well bore to the well bore junction, the well bore junction coupled to a portion of a well bore at least partially disposed below the substantially horizontal well bore; collecting water from the substantially horizontal well bore in the fluid collection area for production to the surface; pumping water from the well bore junction to the surface; and producing gas from the well bore junction to the surface. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification