Formation mechanism of Chang 6 tight sandstone reservoir in Jiyuan Oilfield, Ordos Basin

被引：8

作者：

Ren D. ^{[1
,2
]}

Sun W. ^{[1
]}

Huang H. ^{[2
]}

Liu D. ^{[1
]}

Qü X. ^{[3
]}

Lei Q. ^{[3
]}

机构：

[1] State Key Laboratory for Continental Dynamics and Department of Geology, Northwest University, Xi'an

[2] Engineering Research Cener of Western Low & Ultra-Low Permeability Oilfield Development & Management, Ministry of Education, Xi'an

[3] National Engineering Laboratory for Exploration and Development of Low-Permeability Oil & Gas Fields, Xi'an

来源：

Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2016年 / 41卷 / 10期

关键词：

Chang6; reservoir; Diagenesis; Geologic simulation; Jiyuan Oilfield; Petroleum geology; Porosity evolution;

D O I：

10.3799/dqkx.2016.124

中图分类号：

学科分类号：

摘要：

Despite the abundance of crude oil reserves of Chang 6 reservoir in Jiyuan oilfield, Ordos Basin, its tightness restricts the exploration and development potential and evaluating precision. The physical property, grading analysis, casting thin slice, X-ray-diffraction, the SEM and mercury injection experiments are adopted for the study of reservoir features. Taking the time as the main axis, combining diagenetic history, burial history, paleotemperature history and tectonics, the diagenetic modeling and geologic simulation are adopted to work out pore evolution model and computational method for the tight reservoir's formation mechanism. The results show that low and ultra-low porosity and permeability tight sandstone reservoir with micro-nano pore-throat system was due to strong evolution of transformation. The porosity evolution in H53 Well shows that porosity increased and decreased has an impact on hydrocarbon filling. The difference and quality of the tight reservoir's formation were studied by comparing porosity evolution path and oil saturation in maximum intergranular pore, dissolution, compaction and cementation samples. © 2016, Editorial Department of Earth Science. All right reserved.

引用

页码：1735 / 1744

页数：9

共 23 条

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