[1]孙中良,王芙蓉,何生,等.潜江凹陷古近系盐间典型韵律层页岩孔隙结构[J].深圳大学学报理工版,2019,(No.3(221-346)):295-303.[doi:10.3724/SP.J.1249.2019.03229]
 SUN Zhongliang,WANG Furong,HE Sheng,et al.The pore structures of the shale about typical inter-salt rhythm in the Paleogene of Qianjiang depression[J].Journal of Shenzhen University Science and Engineering,2019,(No.3(221-346)):295-303.[doi:10.3724/SP.J.1249.2019.03229]
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潜江凹陷古近系盐间典型韵律层页岩孔隙结构
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
期数:
2019年No.3(221-346)
页码:
295-303
栏目:
【环境与能源】
出版日期:
2019-05-30

文章信息/Info

Title:
The pore structures of the shale about typical inter-salt rhythm in the Paleogene of Qianjiang depression
作者:
孙中良1王芙蓉1何生1郑有恒2吴世强2罗京1
1)中国地质大学构造与油气资源教育部重点实验室,湖北武汉 430074;2)中国石化江汉油田分公司勘探开发研究院,湖北武汉 430223
Author(s):
SUN Zhongliang1 WANG Furong1 HE Sheng1 ZHENG Youheng2 WU Shiqiang2 and LUO Jing1
1) Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geoscience, Wuhan 430074, Hubei Province, P.R.China2) Research Institute of Exploration and Development,SINOPEC Jianghan Oilfield Branch Company, Wuhan 430223, Hubei Province, P.R.China
关键词:
地质学江汉盆地盐间页岩油盐韵律矿物成分孔隙结构含油性
Keywords:
geology Jianghan Basin inter-salt shale oil salt rhythm mineral composition pore structure oiliness
分类号:
P618.12
DOI:
10.3724/SP.J.1249.2019.03229
文献标志码:
A
摘要:
为精细刻画江汉盆地潜江凹陷潜江组34段第10韵律(简称Eq3410韵律)页岩的矿物组成、岩性岩相组合、孔隙类型和孔径分布,判断孔隙结构的影响因素,寻找最有利的页岩油勘探目标,采用X射线衍射、低温氮气吸附、薄片观察、扫描电镜和能谱分析等方法进行研究.结果发现,潜江凹陷Eq3410韵律的矿物成分主要有白云石、方解石和黏土矿物,不等量的钙芒硝、石英、长石、石盐和黄铁矿等,主要岩相有泥质云岩相、云质泥岩相、灰质泥岩相和泥质灰岩相;主要孔隙类型为白云石晶间孔、粘土矿物晶间孔和碎屑粒间孔,泥质云岩相和云质泥岩相的页岩孔隙结构较好,主要受白云石、黏土矿物和钙芒硝含量的影响.页岩油储层的总有机碳质量分数和含油性也与这些地质因素密切相关,黏土矿物质量分数在20%左右、白云石质量分数在60%左右的泥质云岩相为最好的页岩油勘探目标.
Abstract:
X-ray diffraction (XRD), low temperature nitrogen adsorption, rock pyrolysis, thin section observation, scanning electrochemical microscopy and X-ray energy dispersive spectrometer are used to determine the mineral composition, lithological characteristics, pore types and size distribution, and the influencing factors on pore structures of the 10 rhythm of the third (Eq3) members (Eq3410 for short) of the Qianjiang in the Jianghan Basin. The results show that the mineral compositions of the Eq3410 rhythm are mainly dolomite, calcite, clay minerals, and anisometric glauberite, quartz, feldspar, rock salt, and pyrite. The lithofacies include argillaceous dolomite facies, dolomitic mudstone facies, calcareous mudstone facies and argillaceous limestone facies. Intercrystalline pores of dolomite and clay minerals, and detrital intergranular pores commonly developed in the shales of Eq3410 rhythm. Better pore structures mostly exist in the argillaceous dolomite facies and dolomitic mudstone facies,and their characteristics are mainly affected by dolomite, clay minerals and glauberite, so are the total organic carbon and oil content of shale oil reservoir. The shale with 20% clay minerals and 60% dolomite in argillaceous dolomite facies is the best exploration target for inter-salt shale oil reservoir.
更新日期/Last Update: 2019-04-22