Title:
SYSTEMS AND METHODS FOR PULSED NEUTRON LOGGING IN A SUBTERRANEAN WELLBORE
Document Type and Number:
WIPO Patent Application WO/2020/096837
Kind Code:
A3
Abstract:
Methods and associated systems are disclosed for performing a logging operation within a subterranean wellbore extending within a subterranean reservoir. In an embodiment, the method includes (a) emitting neutrons into the subterranean wellbore or the subterranean reservoir, and (b) detecting gamma rays emitted from atoms disposed within the subterranean wellbore or the subterranean reservoir. In addition, the method includes (c) determining a first gamma ray count within a first energy window of the gamma rays detected at (b), and (d) determining a second gamma ray count within a second energy window of the gamma rays detected at (b). The second energy window is different than the first energy window. Further, the method includes (e) calculating a ratio of the first gamma ray count to the second gamma ray count.
Inventors:
HAN XIAOGANG (US)
ZETT ADRIAN (US)
GALVAN AMAYA JEANINE (US)
LANCLOS BRADY (US)
ZETT ADRIAN (US)
GALVAN AMAYA JEANINE (US)
LANCLOS BRADY (US)
Application Number:
PCT/US2019/058850
Publication Date:
July 23, 2020
Filing Date:
October 30, 2019
Export Citation:
Assignee:
BP CORP NORTH AMERICA INC (US)
International Classes:
G01V5/10
Domestic Patent References:
| WO2015167433A1 | 2015-11-05 |
Foreign References:
| US4524272A | 1985-06-18 | |||
| US20040020646A1 | 2004-02-05 | |||
| US20160003969A1 | 2016-01-07 |
Attorney, Agent or Firm:
SULLIVAN, Kristian R. et al. (US)
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