Logging subsurface formations for porosity

Details Logging subsurface formations for porosity Logging subsurface formations for porosity

1975-09-24

1977-01-18

Borchelt, Archie R.

Radiant energy

Geological testing or irradiation

Well testing apparatus and methods

250262, G01V 500

Patent

active

040041476

ABSTRACT:
A borehole logging tool includes a source of fast neutrons and two thermal neutron detectors. A count rate meter is connected to each thermal neutron detector. A ratio detector provides a first signal indicative of the ratio of the count rates of the two thermal neutron detectors. A first comparator provides a signal indicative predominantly of the macroscopic absorption cross section of the formation by combining both such ratio signal and the count rate from one of the thermal neutron detectors. A second comparator provides a signal indicative predominantly of the porosity of the formation by combining both such ratio signal and such macroscopic absorption cross-section signal.

REFERENCES:
patent: 2776378 (1957-01-01), Youmans
patent: 3373280 (1968-03-01), Mills, Jr.
patent: 3532884 (1970-10-01), Dewan
patent: 3906224 (1975-09-01), Scott et al.

Affiliated with

Also associated with

Rating

Logging subsurface formations for porosity does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Logging subsurface formations for porosity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Logging subsurface formations for porosity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-74265