Method for detecting gas influx in wellbores and its...

Details Method for detecting gas influx in wellbores and its... Method for detecting gas influx in wellbores and its...

2008-08-27

2011-12-13

Keith, Jack (Department: 3663)

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Well logging

Reexamination Certificate

active

08077545

ABSTRACT:
A method for identifying gas in a wellbore includes imparting acoustic energy into the wellbore at a first selected position and detecting the acoustic energy at a second position in the wellbore spaced apart from the first position. Acoustic velocity of fluid in the wellbore from the detected acoustic energy. Presence of gas in the fluid is determined from the velocity.

REFERENCES:
patent: 4628725 (1986-12-01), Gouilloud et al.
patent: 7660195 (2010-02-01), Mandal et al.

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