E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/08 (2006.01) E21B 43/10 (2006.01)
Patent
CA 2628983
A liner for inserting into a drain hole, comprising a resilient tubular member with a central bore; wherein the tubular member is formed from a first continuous helically wound wire provided with a passageway to allow fluid communication across the member.
Schlumberger Canada Limited
Smart & Biggar
LandOfFree
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