Method of correlating a core sample with its original position i

Details Method of correlating a core sample with its original position i Method of correlating a core sample with its original position i

1983-12-29

1985-09-24

Myracle, Jerry W.

Measuring and testing

Borehole or drilling

Downhole test

E21B 4900

Patent

active

045426481

ABSTRACT:
A method of correlating a core sample with its original position in a borehole. The borehole is logged to determine the bulk density of the formation surrounding the borehole. The core sample is scanned with a computerized axial tomographic scanner (CAT) to determine the attenuation coefficients at a plurality of points in a plurality of cross sections along the core sample. The bulk density log is then compared with the attenuation coefficients to determine the position to which the core sample correlates in the borehole. Alternatively, the borehole can be logged to determine the photoelectric absorption of the formation surrounding the borehole, and this log can be compared with data derived from scanning the core sample with a CAT at two different energy levels.

REFERENCES:
patent: 4029963 (1977-06-01), Alvarez et al.
patent: 4263509 (1981-04-01), Fertl et al.
patent: 4312040 (1982-01-01), Tinch et al.

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