Research on lithology and mudcake correction method based on X-ray density logging measurement

IF 1.6 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Applied Radiation and Isotopes Pub Date : 2025-03-28 DOI:10.1016/j.apradiso.2025.111803

Guobin Liu , Quanying Zhang , Qian Chen , Guangjun Xing , Ningchao Li

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引用次数: 0

Abstract

X-ray density logging technology is extremely important for the sustainable development of the petroleum industry. However, due to the difference in photon energy and intensity between the X-ray source and the Cs137 source, X-ray density logging is more easily affected by mudcake and lithology. Based on the Monte Carlo simulation method, the influence of the lithology and mudcake on the X-ray density logging was analyzed, and a set of lithology and mudcake correction method suitable for X-ray density logging were established. Research shows that, the lithology has an obvious impact on the entire energy spectrum of the X-ray density logging, as a result, it is difficult to reduce the lithology influence on density results by adopting a special energy-window. The count combination of high and low energy-windows can reduce the most lithology influence and can be used to obtain a more accurate density. In terms of mudcake, the spine-rib plot of the X-ray density logging is very different from that of traditional density logging, especially in the thick mudcake (both heavy and light) zone, and a single compensation formula cannot fit most mudcake situations. It is an effective method to solve the mudcake influence of X-ray density logging by establishing compensation formulas for different mudcake zones. This study can provide a theoretical guidance for data processing of X-ray density logging.

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来源期刊

Applied Radiation and Isotopes 工程技术-核科学技术

CiteScore

3.00

自引率

12.50%

发文量

406

审稿时长

13.5 months

期刊介绍： Applied Radiation and Isotopes provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and peaceful application of nuclear, radiation and radionuclide techniques in chemistry, physics, biochemistry, biology, medicine, security, engineering and in the earth, planetary and environmental sciences, all including dosimetry. Nuclear techniques are defined in the broadest sense and both experimental and theoretical papers are welcome. They include the development and use of α- and β-particles, X-rays and γ-rays, neutrons and other nuclear particles and radiations from all sources, including radionuclides, synchrotron sources, cyclotrons and reactors and from the natural environment. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. Papers dealing with radiation processing, i.e., where radiation is used to bring about a biological, chemical or physical change in a material, should be directed to our sister journal Radiation Physics and Chemistry.