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Global Geology 2023, 26(1) 57-62 DOI:
ISSN: 1673-9736 CN: 22-1371/P |
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Parameters of new three-water model based on nuclear magnetic experiment and optimization algorithm |
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KANG Nan1 , HONG Xin1 , ZHANG Lihua2* , PAN Baozhi2 , TANG Lei1 and ZHANG Pengji2 |
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1. Engineering Technology Branch of CNOOC Energy Development Co., Ltd., Tianjin 300452, China;
2. College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China |
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Abstract:
Clastic rock reservoir is the main reservoir type in the oil and gas field. Archie formula or various conductive models developed on the basis of Archie’s formula are usually used to interpret this kind of reservoir, and the three-water model is widely used as well. However, there are many parameters in the threewater model, and some of them are difficult to determine. Most of the determination methods are based on the statistics of large amount of experimental data. In this study, the authors determine the value of the parameters of the new three-water model based on the nuclear magnetic data and the genetic optimization algorithm. The relative error between the resistivity calculated based on these parameters and the resistivity measured experimentally at 100% water content is 0.902 4. The method studied in this paper can be easily applied without much experimental data. It can provide reference for other regions to determine the parameters of the new three-water model. |
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Keywords:
new three-water model
optimization algorithm
NMR
water saturation
rock electric parameters
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