LAPSE:2024.1325
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LAPSE:2024.1325
Research on Inversion Log Evaluation Method of Special Mineral in Alkali Lake Shale Oil Reservoir—A Case Study of the Fengcheng Formation in the Mahu Sag, China
June 24, 2024
The Fengcheng Formation in the Mahu Sag of the Junggar Basin, China, is characterized by alkaline lake deposits, featuring abundant alkaline minerals. The content of alkaline minerals affects the physical properties and oil-bearing properties of the reservoir, and existing mineral inversion methods cannot calculate the content of alkaline minerals. Based on Litho Scanner Log data, we can calculate the dry weight of elements using the oxide closure model. By improving the rock volume physical model; adding trona, shortite, eitelite, and reedmergnerite to the rock volume physical model; and combining with the least squares method, the mineral content calculation was carried out, using the inversion method of combination models (Shortite Model, Eitelite Model, Reedmergnerite Model, and Trona Model) to achieve mineral inversion of alkali-bearing shale oil reservoirs. Litho Scanner Log is expensive, and its widespread application will increase exploration costs. This article scales the mineral inversion results of Litho Scanner Log into conventional log data, improves the rock volume physical model of conventional log, and uses a combination model to achieve mineral inversion of alkali-bearing shale oil reservoirs in conventional log. Compared with the results of X-ray diffraction experiments, the average absolute error of all minerals except for trona and feldspar is less than 10%, and the inversion results are consistent with the core test results. The research results of this article can provide theoretical and technical support for the log evaluation of alkali-bearing shale oil reservoirs.
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Keywords
alkaline minerals, combining model, Fengcheng Formation, Junggar Basin, Litho Scanner Log, Mahu Sag, mineral inversion
Subject
Suggested Citation
Zhao L, Mao R, Deng X, Feng Z, Chen J, Zong X, Feng C. Research on Inversion Log Evaluation Method of Special Mineral in Alkali Lake Shale Oil Reservoir—A Case Study of the Fengcheng Formation in the Mahu Sag, China. (2024). LAPSE:2024.1325
Author Affiliations
Zhao L: Faculty of Petroleum, China University of Petroleum-Beijing at Karamay, Karamay 834000, China; School of Geophysics, China University of Petroleum-Beijing, Beijing 102249, China
Mao R: Research Institute of Exploration and Development, PetroChina Xinjiang Oilfield Company, Karamay 834000, China
Deng X: Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China
Feng Z: School of Geophysics, China University of Petroleum-Beijing, Beijing 102249, China
Chen J: Faculty of Petroleum, China University of Petroleum-Beijing at Karamay, Karamay 834000, China
Zong X: Faculty of Petroleum, China University of Petroleum-Beijing at Karamay, Karamay 834000, China
Feng C: Faculty of Petroleum, China University of Petroleum-Beijing at Karamay, Karamay 834000, China
Mao R: Research Institute of Exploration and Development, PetroChina Xinjiang Oilfield Company, Karamay 834000, China
Deng X: Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China
Feng Z: School of Geophysics, China University of Petroleum-Beijing, Beijing 102249, China
Chen J: Faculty of Petroleum, China University of Petroleum-Beijing at Karamay, Karamay 834000, China
Zong X: Faculty of Petroleum, China University of Petroleum-Beijing at Karamay, Karamay 834000, China
Feng C: Faculty of Petroleum, China University of Petroleum-Beijing at Karamay, Karamay 834000, China
Journal Name
Processes
Volume
12
Issue
1
First Page
105
Year
2024
Publication Date
2024-01-01
Published Version
ISSN
2227-9717
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PII: pr12010105, Publication Type: Journal Article
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LAPSE:2024.1325
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doi:10.3390/pr12010105
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Jun 24, 2024
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