Radiant energy – Geological testing or irradiation – Well testing apparatus and methods
Patent
1995-06-26
1996-07-02
Hannaher, Constantine
Radiant energy
Geological testing or irradiation
Well testing apparatus and methods
25039001, G01V 510
Patent
active
055324827
ABSTRACT:
A method of determining a characteristic of an underground formation including the steps of irradiating the formation with high energy neutrons and detecting neutrons scattered by the formation having energies above epithermal to determine the nature of the formation matrix. Epithermal neutrons can also be detected to determine formation porosity. Apparatus includes a high energy neutron source, typically a D-T accelerator producing 14 MeV neutrons, and detectors such as .sup.4 He filled proportional counters for detecting neutrons having energies above epithermal and .sup.3 He filled proportional counters for detecting epithermal neutrons.
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Hannaher Constantine
Hyden Martin D.
Pojunas Leonard W.
Schlumberger Technology Corporation
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