Radiant energy – Geological testing or irradiation – Well testing apparatus and methods
Patent
1982-08-05
1985-06-18
Howell, Janice A.
Radiant energy
Geological testing or irradiation
Well testing apparatus and methods
250262, G01V 510
Patent
active
045242747
ABSTRACT:
In the illustrative embodiment of the invention disclosed, a neutron porosity logging tool adapted to log a mud-filled borehole includes one or more pairs of epithermal and/or thermal neutron detectors. The detector count rates are corrected to the effective count rates for fresh water in the borehole by applying thereto empirically-derived correction terms that are functionally related to the hydrogen index of the mud and, in the case of thermal detectors, also to the thermal neutron absorption properties in the mud.
REFERENCES:
patent: 3483376 (1969-12-01), Locke et al.
patent: 3508438 (1970-04-01), Alger et al.
patent: 3538329 (1970-11-01), Niven
patent: 3566117 (1971-02-01), Tixier
patent: 3567935 (1971-03-01), Nagel
patent: 3662172 (1972-05-01), Youmans
patent: 4035639 (1977-07-01), Boutemy et al.
patent: 4423323 (1983-12-01), Ellis et al.
John C. Stick, Jr., Gilbert Swift, Ralph Hartline, "A Review of Current Techniques in Gamma-Ray and Neutron Log Interpretation", Journal of Petroleum Technology, (Mar. 1962), pp. 233-241.
An article from: Fourth Annual Logging Symposium Transactions on May 23-24, 1963, Oklahoma City, OK, "Formation Evaluation with Nuclear and Acoustic Logs", by F. Lebreton, A. H. Youmans, H. I. Oshry and B. F. Wilson.
Hannaher Constantine
Howell Janice A.
Schlumberger Technology Corporation
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