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US 2014/0318805 A1Published application
Coal bed gas well apparatus and method with minable non-sparking tubular and valve components
AssigneeHalliburton Energy Services, Inc.
InventorsAlan Brian WEBB, John Todd BROOME, Karl Michael Tunstall
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Abstract
Disclosed is a wellbore configuration for use in coal bed gas production comprising tubing and down hole equipment made from non-sparking materials which can be mined out with the coal.
Claims20
A method of drilling, treating, and recovering gas from a coal bed formation prior to mining the formation, comprising the steps of:
- drilling a wellbore to extend horizontally in the coal bed formation;
- providing tubing and a plurality of valves:
- installing the tubing and a plurality of valves in the wellbore with the plurality of valves spaced along the wellbore;
- selectively opening the valves and pumping treatment fluids from the tubing, through the valves and into the coal bed formation;
- producing gas through the tubing from the coal bed formation;
- and
- thereafter, mining the materials, tubing and valves located in the coal bed without creating sparks.
4 more elements
A valve for use in subterranean well assembly, comprising:
- a tubular body comprising an axially extending bore, means for connection the body to a tubing string and a radially extending port in the body providing a flow path between bore and the exterior of the body;
- a cylindrical sleeve mounted in the bore to axially reciprocate in the body between a closed position blocking flow through the port and an open position wherein flow through the port is not blocked;
- and
- the valve consists of minable non-sparking material.
1 more element
Dependencies are inferred from the claim text.