E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/12 (2006.01) E21B 33/127 (2006.01)
Patent
CA 2482137
The present invention provides for a seal assembly that maintains a seal under various conditions by providing a source of stored energy that can be used to insure contact forces are maintained.
Schlumberger Canada Limited
Smart & Biggar
LandOfFree
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