US 11,774,630 B2
Systems and methods for determining clean inelastic and capture spectra
Feyzi Inanc, Houston, TX (US); Maxim Vasilyev, Houston, TX (US); Toyli Anniyev, Houston, TX (US); and Ezzatollah Esfandiari, Houston, TX (US)
Assigned to Baker Hughes Oilfield Operations LLC, Houston, TX (US)
Filed by Baker Hughes Oilfield Operations LLC, Houston, TX (US)
Filed on Mar. 12, 2021, as Appl. No. 17/199,979.
Prior Publication US 2022/0291415 A1, Sep. 15, 2022
Int. Cl. G01V 5/10 (2006.01)
CPC G01V 5/105 (2013.01) 18 Claims
OG exemplary drawing
 
1. A downhole nuclear measurement tool, comprising:
a housing;
a neutron source, arranged within the housing;
a first detector positioned at a distance away from the neutron source, the first detector receiving backscatter radiation, from a formation, in response to neutron emission from the neutron source, and the first detector being a gamma ray detector; and
a second detector, positioned radially outward from and circumferentially surrounding at least a portion of the first detector, the second detector receiving the backscatter radiation, the second detector being a neutron detector, wherein the backscatter radiation at the second detector corresponds to a neutron flux incident on the first detector.