E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 47/00 (2006.01) E21B 23/10 (2006.01) E21B 23/14 (2006.01) E21B 34/06 (2006.01)
Patent
CA 2290894
The well logging tool comprises differential valve means allowing passage of fluid through said tool during logging operations on when the tool becomes jammed inside a drillpipe.
Milne Alex Watson
Spencer Michael Charles
Borden Ladner Gervais Llp
Reeves Wireline Technologies Ltd.
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