[an error occurred while processing this directive] | Global Geology 2020, 23(3) 191-198 DOI: 10.3969/j.issn.1673-9736.2020.03.07 ISSN: 1673-9736 CN: 22-1371/P | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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论文 |
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Influence of wettability of shaly sandstone on rock electricity parameters | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ZHAO Yongqiang1, PAN Baozhi1, SI Zhaowei2, LIN Fawu2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1. College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China; 2. Petro China Jidong Oil Field Company, Tangshan 063000, China | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
摘要: It has been found that the existence of chlorite and illite will lead to the rock wettability of oil affinity. Chlorite and illite are developed in shaly sandstone of Yingcheng Formation in Longfengshan area, the saturation index n of 7 rock samples is very high, with the highest of 14.57, whereas the cementation index m is low. The X-ray diffraction of clay and whole rock analysis of 7 shaly sandstone samples are carried out, and the relationship between chlorite and illite content vs. m and n is established. It is concluded that the low m value and high n value are caused by the wettability of rock. In order to verify the influence of wettability on the parameters of rock electricity, this paper discusses the method of making artificial shaly sandstone and the control of wettability. This study provides certain reference for determining the saturation model of shaly sandstone and improving the logging interpretation accuracy of shaly sandstone reservoirs. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
关键词: wettability rock electricity parameters chlorite illite shaly sandstone | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Influence of wettability of shaly sandstone on rock electricity parameters | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ZHAO Yongqiang1, PAN Baozhi1, SI Zhaowei2, LIN Fawu2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1. College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China; 2. Petro China Jidong Oil Field Company, Tangshan 063000, China | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Abstract: It has been found that the existence of chlorite and illite will lead to the rock wettability of oil affinity. Chlorite and illite are developed in shaly sandstone of Yingcheng Formation in Longfengshan area, the saturation index n of 7 rock samples is very high, with the highest of 14.57, whereas the cementation index m is low. The X-ray diffraction of clay and whole rock analysis of 7 shaly sandstone samples are carried out, and the relationship between chlorite and illite content vs. m and n is established. It is concluded that the low m value and high n value are caused by the wettability of rock. In order to verify the influence of wettability on the parameters of rock electricity, this paper discusses the method of making artificial shaly sandstone and the control of wettability. This study provides certain reference for determining the saturation model of shaly sandstone and improving the logging interpretation accuracy of shaly sandstone reservoirs. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Keywords: wettability rock electricity parameters chlorite illite shaly sandstone | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
收稿日期 2020-02-26 修回日期 2020-04-20 网络版发布日期 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
DOI: 10.3969/j.issn.1673-9736.2020.03.07 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
基金项目:
Supported by projects of Science and Technology Development Excellent Young Talents of Jilin Province(No. 20190103150JH)and Science and Technology Development Plan of Jilin Province (No. 20170201001SF). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
通讯作者: PAN Baozhi | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
作者简介: | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
作者Email: panbaozhi@jlu.edu.cn | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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参考文献: | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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