E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 47/12 (2006.01) E21B 47/18 (2006.01)
Patent
CA 2361263
A system that is usable with a subterranean well includes a downhole assembly and an apparatus. The downhole assembly is adapted to respond to a command that is encoded in a stimulus that is communicated downhole. The apparatus is adapted to change a pressure of a gas in communication with the well to generate the stimulus.
Goodman Kenneth R.
Hansen Merlin D.
Herrmann Wolfgang E.
Vaynshteyn Vladimir
Schlumberger Canada Limited
Smart & Biggar
LandOfFree
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