Electrical properties of Longmaxi organic-rich shale and its potential applications to shale gas exploration and exploitation
文献类型：期刊论文
| 作者 | Wang, Xuben1,2; Zhang, Bing2; He, Zhangxiang3; He, Lanfang4; Yang, Kai2; Huang, Tao2; Luo, Fangbing2; Tang, Jialin2; Gan, Lu2 |
| 刊名 | JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
 |
| 出版日期 | 2016-11-01 |
| 卷号 | 36页码:573-585 |
| 关键词 | Organic shale Electrical properties Porosity Clay minerals Total organic carbon Hydrofracturing monitoring |
| DOI | 10.1016/j.jngse.2016.10.027 |
| 文献子类 | Article |
| 英文摘要 | This paper mainly discussed the experimental relationships between electrical properties and geological parameters such as brittle mineral content, total organic carbon (TOC) content and microscopic pore structure, with examples from Longmaxi organic shale in Sichuan province of China. With results derived from X-ray diffraction, organic geochemical measurements, nitrogen adsorption method and tests of rock electrical parameters, we came to the conclusions as follows: (1) Shale samples dominated by organic pores have the lowest resistivity, medium resistivity was found in samples mainly containing intra-particle pores and intergranular pores, and intercrystal pore dominated samples have the highest resistivity. (2) Brittle mineral content has positive correlation with rock's resistivity, as well as porosity and connectivity of intergranular pores. Low brittle mineral content suppresses electric double layers where ions exchange with clay minerals, ultimately resulting in increasing rock resistivity and decreasing rock polarizability. (3) High TOC content (>3%) is the most critical factor contributing to low organic shale resistivity, as increasing TOC content improves pore structure and reduces resistivity. The isomorphic substitution of the organic matter also serves to enhance shale conductivity and polarization. (4) Pyrite content has negative correlation with resistivity, while positive correlation with polarizability. Our study thus provides a series of basic parameters for shale gas exploration and exploitation, and discusses the geological features of significance for shale gas development in the Longmaxi Formation of this area. This is achieved by the determination of rock electrical parameters, which can be used to judge organic carbon and brittle mineral content to delineate shale areas as 'brittle shale sweet spots'. In addition, in the process of monitoring hydrofracturing, the electrical characteristics of the low resistivity anomaly correspond to the possible existence of a fracture or fracture zone, which could provide more reliable geological structure information for the later exploitation of shale gas. (C) 2016 Published by Elsevier B.V. |
| WOS关键词 | INDUCED POLARIZATION ; CONDUCTIVITY |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000390734800053 |
| 资助机构 | National Natural Science Foundation of China(U1262206 ; National Natural Science Foundation of China(U1262206 ; 41502111) ; 41502111) ; National Natural Science Foundation of China(U1262206 ; National Natural Science Foundation of China(U1262206 ; 41502111) ; 41502111) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53168]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 作者单位 | 1.Chengdu Univ Technol, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610059, Sichuan, Peoples R China 2.Chengdu Univ Technol, Minist Educ, Key Lab Earth Explorat & Informat Tech, Chengdu 610059, Sichuan, Peoples R China 3.China Natl Petr Corp, BGP, Zhuozhou 072750, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xuben,Zhang, Bing,He, Zhangxiang,et al. Electrical properties of Longmaxi organic-rich shale and its potential applications to shale gas exploration and exploitation[J]. JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,2016,36:573-585. |
| APA | Wang, Xuben.,Zhang, Bing.,He, Zhangxiang.,He, Lanfang.,Yang, Kai.,...&Gan, Lu.(2016).Electrical properties of Longmaxi organic-rich shale and its potential applications to shale gas exploration and exploitation.JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,36,573-585. |
| MLA | Wang, Xuben,et al."Electrical properties of Longmaxi organic-rich shale and its potential applications to shale gas exploration and exploitation".JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING 36(2016):573-585. |
入库方式： OAI收割
来源：地质与地球物理研究所
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