Radiant energy – Geological testing or irradiation – Well testing apparatus and methods
Patent
1981-12-09
1986-03-18
Howell, Janice A.
Radiant energy
Geological testing or irradiation
Well testing apparatus and methods
250256, G01V 510
Patent
active
045771022
ABSTRACT:
Method and apparatus for distinguishing oil from fresh water in situ in a subsurface geological formation are proposed which utilize the anomalous response of a neutron porosity tool to some oils. Apparent porosity derived from a neutron porosity investigation tool which measures spatial neutron flux distribution is compared to the porosity derived from a second investigating tool whose response is not or at least is less sensitive to the hydrogen density of the formation fluid than is the neutron porosity tool. Where a real difference is evident, oil rather than fresh water is indicated.
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Sherman Harold
Ullo John J.
Borst Stephen L.
Coker David G.
Gordon David P.
Hannaher Constantine
Howell Janice A.
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