Differential pressure fluid density instrument

Details Differential pressure fluid density instrument Differential pressure fluid density instrument

1996-02-08

1996-09-03

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Well logging

367912, 175 48, 175 50, 7315205, 7315218, E21B 4910

Patent

active

055530346

ABSTRACT:
The present invention is a differential pressure fluid density production logging tool. The tool comprises an elongated housing adapted to traverse a wellbore. The housing has ports in hydraulic communication with the wellbore at spaced apart locations. The tool also comprises a differential pressure transducer having two inputs, a selective valve, and a reference tube filled with a liquid having a known density. The valve is selectively operable to shunt the inputs of the transducer, to connect the reference tube across the inputs of the transducer to calibrate the transducer, and to connect the ports across the inputs of the transducer to enable measurement of the fluids in the wellbore.

REFERENCES:
patent: 3616688 (1971-11-01), Roussin et al.
patent: 4703664 (1987-11-01), Kirkpatrick et al.
patent: 4805449 (1989-02-01), Das
patent: 4860580 (1989-08-01), Da Rocher

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