| US 7,491,929 B2 | ||
| Method and related system of pulsed neutron logging | ||
| Jerome Truax, Houston, Tex. (US) | ||
| Assigned to Halliburton Energy Services, Inc., Houston, Tex. (US) | ||
| Filed on May 01, 2006, as Appl. No. 11/380,963. | ||
| Prior Publication US 2007/0252080 A1, Nov. 01, 2007 | ||
| Int. Cl. G01V 5/10 (2006.01) | ||
| U.S. Cl. 250—269.6 | 20 Claims |
| 1. A method comprising:
releasing neutrons from a neutron source of a logging tool within a borehole;
detecting gamma rays by a sensor on the logging tool, the gamma rays produced by capture of at least some of the neutrons;
distinguishing borehole-sourced gamma rays from formation-sourced gamma rays based on a point in time at which production
of borehole-sourced gamma rays reaches a predetermined threshold; and
using the formation-sourced gamma rays to determine a parameter of a formation surrounding the borehole.
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