Measuring and testing – Borehole or drilling – Downhole test
Patent
1975-01-31
1976-05-04
Myracle, Jerry W.
Measuring and testing
Borehole or drilling
Downhole test
E21B 4710
Patent
active
039540065
ABSTRACT:
In the several representative embodiments of the new and improved methods disclosed herein, a cable-suspended spinner-type flowmeter is successively lowered and raised at selected speeds in a well bore containing one or more flowing fluids whose velocity or flow rate are to be determined. In one manner of practicing the invention, the flowmeter is passed back and forth through a lower static well bore interval for establishing the response of the tool at zero flow rates. In this way the output measurements obtained from the runs through the higher or dynamic intervals can be uniquely correlated for accurately determining the velocity and flow rate of the well bore fluids in each dynamic interval independently of differences in fluid viscosity. In another manner of practicing the invention, output measurements obtained upon passing the flowmeter back and forth through a dynamic well bore zone in which the fluids are flowing at a known rate are used for accurately determining the velocity and flow rate in the other dynamic well bore intervals.
REFERENCES:
patent: 2652720 (1953-09-01), Piety
patent: 2706406 (1955-04-01), Vincent et al.
Anderson Ronald A.
Smolen James J.
Archambeau, Jr. Ernest R.
Moore Stewart F.
Myracle Jerry W.
Schlumberger Technology Corporation
Sherman William R.
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