| US 7,432,500 B2 | ||
| Azimuthal binning of density and porosity data | ||
| Matthew J. Sale, Houston, Tex. (US) | ||
| Assigned to Baker Hughes Incorporated, Houston, Tex. (US) | ||
| Filed on Feb. 22, 2005, as Appl. No. 11/63,153. | ||
| Claims priority of provisional application 60/547838, filed on Feb. 26, 2004. | ||
| Prior Publication US 2005/0189483 A1, Sep. 01, 2005 | ||
| Int. Cl. G01V 5/12 (2006.01) | ||
| U.S. Cl. 250—269.3 [250/256; 250/266] | 18 Claims |
| 1. A method of logging of an earth formation comprising:
(a) irradiating an earth formation using a radiation source on a logging tool in a borehole in the earth formation;
(b) making measurements with a pair of spaced-apart radiation detectors during continued rotation of the tool;
(c) partitioning the measurements made by two spaced-apart detectors over a selected time interval into a plurality of azimuthal
sectors;
(d) identifying one of the plurality of azimuthal sectors for which a function of the partitioned measurements attains a minimum
value;
(e) determining a property of the earth formation using the measurements within the one of the plurality of azimuthal sectors,
the determination being based at least in part on comparing the function of the partitioned measurements within the one sector
to a threshold; and
(f) recording the determined property on a suitable medium.
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