Adjustable window liner
First Claim
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1. 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 wherein the junction shield contracts to smaller transverse dimension to pass through the lateral opening into the auxiliary bore.
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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.
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Citations
18 Claims
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1. A system for lining a junction between a main bore and an auxiliary bore, comprising:
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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 wherein the junction shield contracts to smaller transverse dimension to pass through the lateral opening into the auxiliary bore. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of lining a transition between a main bore and an auxiliary bore, comprising:
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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 contracting from a first transverse dimension to a smaller transverse dimension to pass through a lateral opening into the auxiliary bore. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification