沾化凹陷渤南洼陷沙一段湖相富有机质烃源岩岩石学与孔隙结构特征:以罗63井和义21井取心段为例

doi:10.13278/j.cnki.jjuese.20160278

吉林大学学报(地球科学版) ›› 2018, Vol. 48 ›› Issue (1): 39-52.doi: 10.13278/j.cnki.jjuese.20160278

沾化凹陷渤南洼陷沙一段湖相富有机质烃源岩岩石学与孔隙结构特征:以罗63井和义21井取心段为例

李志明^1,2,3,4, 张隽^1,2,3,4, 鲍云杰^1,2,3,4, 曹婷婷^1,2,3,4, 徐二社^1,2,3,4, 芮晓庆^1,2,3,4, 陈红宇^1,2,3,4, 杨琦^1,2,3,4, 张庆珍^1,2,3,4

1. 中国石化石油勘探开发研究院无锡石油地质研究所, 江苏无锡 214126;
2. 页岩油气富集机理与有效开发国家重点实验室, 江苏无锡 214126;
3. 国家能源页岩油研发中心, 江苏无锡 214126;
4. 中国石化油气成藏重点实验室, 江苏无锡 214126

收稿日期:2016-12-26 出版日期:2018-01-26 发布日期:2018-01-26
作者简介:李志明(1968-),男,研究员,主要从事油气地球化学、油气地质综合评价研究,E-mail:lizm.syky@sinopec.com
基金资助:
国家重点基础研究发展计划（“973”计划）项目（2014CB239101）；中国石油化工股份有限公司科技开发部项目（P12012，P14157）

Characteristics of Petrology and Pore Configuration of Lacustrine Source Rock Rich in Organic Matter from the First Member of Shahejie Formation in Bonan Sag, Zhanhua Depression: A Case Study on Well Luo 63 and Yi 21 Cored Interval

Li Zhiming^1,2,3,4, Zhang Jun^1,2,3,4, Bao Yunjie^1,2,3,4, Cao Tingting^1,2,3,4, Xu Ershe^1,2,3,4, Rui Xiaoqing^1,2,3,4, Chen Hongyu^1,2,3,4, Yang Qi^1,2,3,4, Zhang Qingzhen^1,2,3,4

1. Wuxi Research Institute of Petroleum Geology, RIPEP, SINOPEC, Wuxi 214126, Jiangsu, China;
2. State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Wuxi 214126, Jiangsu, China;
3. State Energy Center for Shale Oil Research and Development, Wuxi 214126, Jiangsu, China;
4. Key Laboratory of Petroleum Accumulation Mechanisms, SINOPEC, Wuxi 214126, Jiangsu, China

Received:2016-12-26 Online:2018-01-26 Published:2018-01-26
Supported by:
Supported by National Key Basic Research Program("973" Program) of China (2014CB239101)and Projects of Science and Technology Development Section, SINOPEC(P12012, P14157)

摘要/Abstract

摘要： 以沾化凹陷渤南洼陷罗63井和义21井沙一段取心段为例，依据研究样品的热解、全岩与黏土矿物X射线衍射、有机岩石学、孔隙度、氩离子抛光+扫描电镜以及微孔隙结构等分析结果，开展了沙一段湖相富有机质烃源岩岩石学与孔隙结构特征研究，结果表明：罗63井和义21井沙一段取心段富有机质烃源岩主要由碳酸盐矿物、黏土矿物和石英组成，另含少量长石、黄铁矿和石膏，其中黏土矿物主要由伊/蒙混层、伊利石组成，由取心段顶部至底部，碳酸盐矿物质量分数明显增高，而黏土矿物和石英则显著降低，呈现由钙质或灰质泥岩至演变为泥质灰岩的特征，岩石构造类型包括层状、纹层状和块状3类；罗63井和义21井沙一段取心段富有机质烃源岩平均孔隙度分别为2.09%和4.43%，具纹层状构造的烃源岩具有相对高的孔隙度；主要发育矿物基质孔隙（即粒间孔隙和粒内孔隙）和裂缝型孔隙两大类，而有机质孔隙不发育，孔隙半径从十几微米至几纳米的孔隙均有分布，以发育孔径50 nm以上的宏孔为主。

关键词: 矿物组成, 孔隙结构, 富有机质烃源岩, 罗63井, 义21井, 沙一段, 渤南洼陷

Abstract: The paper focuses on the petrology and pore configuration of lacustrine source rock rich in organic matter, on the basis of the analysis of whole rock and clay mineral X-ray diffraction, organic petrology, maturity, porosity, argon ion polishing+SEM, and MP, through a case study of the First Member of Shahejie Formation from Well Luo 63 and Yi 21 cored interval in Bonan sag, Zhanhua depression. The results show that the source rock rich in organic matter is mainly composed of carbonate minerals, clay minerals and quartz, with a little feldspar, pyrite and gypsum, and the clay minerals are consisted of mixed layer of illite/smectite, and illite. From the top to the bottom of the cored interval, the contents of carbonate minerals increase, the clay minerals and quartz decrease, and the lithologic character changes from the calcareous mudstone to the argillaceous limestone. The source rocks are layered, or laminar and block like. The average porosity of the source rocks from the Well Yi 21 and Luo 63 is 2.09% and 4.43% respectively, and the porosity of the source rock with laminar structure is relatively high. The pore types of the source rock rich in organic matter are dominated by mineral matrix pores (inter-particleand intra-particle) and fracture pores with no organic-matter pores. The pore radius is from several nanometers to several micrometers, dominated by macro-pore with its pore diameter larger than 50 nanometers.

Key words: mineral component, pore configuration, source rock rich in organic matters, Well Luo 63, Well Yi 21, First Member of Shahejie Formation, Bonan sag

中图分类号:

P618.13

李志明, 张隽, 鲍云杰, 曹婷婷, 徐二社, 芮晓庆, 陈红宇, 杨琦, 张庆珍. 沾化凹陷渤南洼陷沙一段湖相富有机质烃源岩岩石学与孔隙结构特征:以罗63井和义21井取心段为例[J]. 吉林大学学报(地球科学版), 2018, 48(1): 39-52.

Li Zhiming, Zhang Jun, Bao Yunjie, Cao Tingting, Xu Ershe, Rui Xiaoqing, Chen Hongyu, Yang Qi, Zhang Qingzhen. Characteristics of Petrology and Pore Configuration of Lacustrine Source Rock Rich in Organic Matter from the First Member of Shahejie Formation in Bonan Sag, Zhanhua Depression: A Case Study on Well Luo 63 and Yi 21 Cored Interval[J]. Journal of Jilin University(Earth Science Edition), 2018, 48(1): 39-52.

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沾化凹陷渤南洼陷沙一段湖相富有机质烃源岩岩石学与孔隙结构特征:以罗63井和义21井取心段为例

Characteristics of Petrology and Pore Configuration of Lacustrine Source Rock Rich in Organic Matter from the First Member of Shahejie Formation in Bonan Sag, Zhanhua Depression: A Case Study on Well Luo 63 and Yi 21 Cored Interval

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