E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/4
E21B 49/00 (2006.01) E21B 27/02 (2006.01) E21B 47/10 (2006.01) G01F 1/704 (2006.01)
Patent
CA 1292427
ABSTRACT METHOD OF LOCATING HYDROCARBON PRODUCING STRATA AND THE INSTRUMENT THEREFOR A cylinder is mounted to descend a borehole for purposes of measuring the mass flow rate of gas flowing upward in the borehole. Within the cylinder is a source of tracer gas which is ejected at a constant mass flow rate from near the lower end of the cylinder. A tracer gas concentration measuring means near the top of the cylinder will measure the degree of concentration of the tracer gas and thereby provide a measurement of the mass flow rate of other gases flowing upwardly around the cylinder
587311
Bennett Richmond
Gustafson Todd D.
Schettler Paul D.
Columbia Natural Resources Inc.
Deeth Williams Wall Llp
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