Diagenesis and porosity-permeability evolution of low permeability reservoirs: A case study of Jurassic Sangonghe Formation in Block 1, central Junggar Basin, NW China

被引：0

作者：

Xi, Kelai ^{[1
,2
]}

Cao, Yingchang ^{[1
]}

Wang, Yanzhong ^{[1
]}

Girma, Haile Beyene ^{[2
]}

Zhang, Xiangxiang ^{[3
]}

Zhang, Jianghua ^{[4
]}

Jin, Jiehua ^{[1
]}

机构：

[1] School of Geosciences, China University of Petroleum, Qingdao

[2] Department of Geosciences, University of Oslo, Oslo

[3] PetroChina Research Institute of Petroleum Exploration and Development, Beijing

[4] Xinchun Oil Production Plant of Shengli Oilfield, Sinopec, Dongying

来源：

Shiyou Kantan Yu Kaifa/Petroleum Exploration and Development | 2015年 / 42卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Diagenesis; Hydrocarbon accumulation history; Junggar Basin; Low permeability reservoir; Porosity-permeability evolution;

D O I：

10.1016/s1876-3804(15)30040-9

中图分类号：

学科分类号：

摘要：

Based on core observation, thin section examination, cathode luminescence analysis, scanning electron microscopy, fluid inclusions, carbon and oxygen isotope, mercury penetration, porosity-permeability test and other analytical methods, combined with the histories of burial evolution, organic matter thermal evolution and hydrocarbon charge, the diagenesis and porosity-permeability evolution are studied of low-permeability reservoirs of Jurassic Sangonghe Formation in Block 1 of central Junggar Basin. The matching relation between reservoir porosity-permeability evolution and hydrocarbon accumulation history is analyzed. The diagenetic environment evolution of the reservoir in the study area is early alkaline, interim acid and late alkaline, forming the diagenetic sequence of chlorite membrane precipitation, early calcite cementation, feldspar dissolution accompanied by quartz overgrowth and authigenic kaolinite precipitation, anhydrite cementation, late period ferrocalcite and ankerite cementation, a small amount of pyrite cementation. Generally, compaction occurs throughout the whole burial process. According to the matching relation between reservoir porosity-permeability evolution and hydrocarbon accumulation history, the Jurassic Sangonghe Formation has three genetic types of low permeability reservoirs: densification after hydrocarbon accumulation, with the best exploration potential; densification during the hydrocarbon accumulation, with medium exploration potential; densification before the hydrocarbon accumulation, with the poorest exploration potential. ©, 2015, Shiyou Kantan Yu Kaifa/Petroleum Exploration and Development. All right reserved.

引用

页码：434 / 443

页数：9

共 23 条

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