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Proposed Correction and Influence of Drilling Fluids in X‐Ray Fluorescence Logging
Author(s) -
Ge Liangquan,
Zhang Ye,
Cheng Yeshun,
Zhou Sichun,
Xie Tingzhou,
Hou Shengli
Publication year - 1997
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/(sici)1097-4539(199709)26:5<303::aid-xrs201>3.0.co;2-d
Subject(s) - logging , drilling fluid , petroleum engineering , drilling , fluorescence , x ray fluorescence , geology , computer science , environmental science , materials science , optics , physics , metallurgy , ecology , biology
Abstract The drilling fluid in wet boreholes is a key problem in the process of XRF logging work, limiting the accuracy, precision and limit of in situ determination of the concentrations of elements. A combination of the mechanics in the drill hole probe (hardware) with technical methods (software) has been adopted for overcoming the influence of drilling fluids, which makes it possible for XRF logging to operate in wet holes for determining the concentration of lower atomic number elements. For the hardware, a short arm with a proportional counter detector (45 cm) divided from the drill hole probe (300 cm) has been designed and constructed which can be pushed automatically to the hole wall in the process of XRF logging work. For the software, a new technical method can be used to correct successfully the influence of a 0–6 mm water layer on the results of XRF logging for a set of Pb–Zn wall models. © 1997 John Wiley & Sons, Ltd.