E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
73/139, 340/140,
E21B 47/00 (2006.01) E21B 47/10 (2006.01) G01P 5/02 (2006.01) G01P 13/00 (2006.01) H01H 35/40 (2006.01)
Patent
CA 1042782
Abstract of the Invention. Apparatus for sensing the flow from a pumped well and for generating signals indicative of that flow includes an orifice flow sensing system adapted to be placed into the flowline of a pumped well and being operably con- nected to an electro-mechanical signal switch. 1a
247288
Irby Richard E.
Jackson Jay W.
Jett Marion B.
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