Adjustable window liner
AssigneeCDX Gas, LLC
InventorsChristopher Pratt, Bruno Walter
Life of this patent
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Abstract
A system for lining a junction between a main bore and an auxiliary bore includes a first tubing adapted to line at least a portion of the main bore. The first tubing has a lateral opening therein. A second tubing has a junction shield extending outward therefrom. The junction shield has a larger transverse dimension than the lateral opening and is adapted to contract to a smaller transverse dimension to pass through the lateral opening into the auxiliary bore.
Claims24
A system for lining a junction between a main bore and an auxiliary bore, comprising:
- a first tubing adapted to line at least a portion of the main bore, the first tubing having a lateral opening therein;
- and
- a second tubing having a junction shield extending outward therefrom, the junction shield having a larger transverse dimension than the lateral opening and adapted to contract to a smaller transverse dimension to pass through the lateral opening into the auxiliary bore.
A system for lining a junction between a main bore and an auxiliary bore, comprising:
- a first tubing adapted to line at least a portion of the main bore, the first tubing having a lateral opening therein;
- a second tubing having a junction shield flange extending outward therefrom, the junction shield flange adapted to at least partially span a gap between the second tubing and an edge of the lateral opening when the second tubing resides in the auxiliary bore;
- and
- a cover on the lateral opening changeable between a closed position covering more of the lateral opening than is covered in an open position.
A method of lining a transition between a main bore and an auxiliary bore, comprising:
- receiving a main liner in the main bore;
- receiving an auxiliary liner in the auxiliary bore, the auxiliary bore at least partially coinciding with a coal seam;
- and
- receiving a junction liner between the auxiliary liner and the main liner, the junction liner positioned in relation to the main liner in a manner that would allow passage of sand between the main liner and the junction liner.
Dependencies are inferred from the claim text.