Patent ID: 11892589
Assignee: CHINA PETROLEUM & CHEMICAL CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  E | IPC E  G

Claim 10:
11. The method of claim 1, wherein a first detector, a second detector, and a third detector are disposed in the pulsed neutron tool, and, wherein the method comprises:
obtaining a neutron count rate and a capture gamma count rate from each of the first detector, the second detector, and the third detector;
calculating a first ratio of neutron count rate and a first ratio of capture gamma ray count rate between the first detector and the second detector, a second ratio of neutron count rate and a second ratio of capture gamma ray count rate between the second detector and the third detector, and a third ratio of neutron count rate and a third ratio of capture gamma ray count rate between the first detector and the third detector;
calculating three neutron porosities using the first ratio of neutron count rate, the second ratio of neutron count rate, and the third ratio of neutron count rate, respectively; and/or
calculating three capture gamma ray porosities using the first ratio of gamma ray count rate, the second ratio of capture gamma ray count rate, and the third ratio of capture gamma ray count rate, respectively.