Radiant energy – Geological testing or irradiation – Well testing apparatus and methods
Patent
1977-09-23
1979-08-28
Willis, Davis L.
Radiant energy
Geological testing or irradiation
Well testing apparatus and methods
250356, G01V 500
Patent
active
041662156
ABSTRACT:
In the representative embodiments of the new and improved methods and apparatus disclosed herein, a well tool incorporating the principles of the present invention is arranged for selectively discharging discrete minor quantities of a first radioactive tracer and of a second radioactive tracer. When the tool is stationed in a production well, upon discharge of whichever one of the two tracers that is believed to be miscible in the continuous-phase fluid at that depth location, radiation detectors arranged at spaced locations on the tool respond to provide one or more measurements of the level of radioactivity in the well bore fluids from which one or more dynamic flow characteristics of the continuous-phase fluid at that depth location may be determined.
REFERENCES:
patent: RE27272 (1972-01-01), Young
patent: 2617941 (1952-11-01), Craggs
patent: 4035640 (1977-07-01), Arnold et al.
Schlumberger Technology Corporation
Willis Davis L.
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