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1. (WO2017039968) DETERMINATION OF RADIATION TRACER DISTRIBUTION USING NATURAL GAMMA RAYS

Pub. No.:    WO/2017/039968    International Application No.:    PCT/US2016/046040
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Tue Aug 09 01:59:59 CEST 2016
IPC: E21B 47/00
G01V 5/04
G01V 5/12
Applicants: HALLIBURTON ENERGY SERVICES, INC.
Inventors: GUO, Qingzhen
GUO, Weijun
Title: DETERMINATION OF RADIATION TRACER DISTRIBUTION USING NATURAL GAMMA RAYS
Abstract:
Various apparatus or methods are arranged to operate a tool downhole in a well, where the tool has a detection package operable to detect gamma rays. Spectra peaks of the detected gamma rays can be determined in each of selected energy windows. Distribution of radiation tracer can be determined in one or more regions around the tool from ratios of the spectra peaks. Additional apparatus, systems, and methods having a gamma ray detection package can operate in a variety of applications.