Characteristics of Tight Sandstone Reservoirs and Their Controlling Factors of He-1 Member in Hangjinqi Block, Ordos Basin

被引：0
|
作者：
Qin S. [1 ]
Shi W. [1 ,2 ]
Wang R. [1 ,2 ]
Liu K. [1 ,2 ]
Zhang W. [3 ]
Qi R. [3 ]
Xu Q. [4 ]
机构：
[1] School of Earth Resources, China University of Geosciences, Wuhan
[2] Key Laboratory of Tectonics and Petroleum Resources, Ministry of Education, China University of Geosciences, Wuhan
[3] Exploration and Development Research Institute, SINOPEC North China Company, Zhengzhou
[4] School of Geosciences, Yangtze University, Wuhan
来源：
Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2022年 / 47卷 / 05期
关键词：
Hangjinqi block; Main controlling factor; Ordos basin; Petroleum geology; Reservoir characteristic; Tight sandstone reservoir;
D O I：
10.3799/dqkx.2022.007
中图分类号：
学科分类号：
摘要：
The He-1 Member of Hangjinqi block in Ordos basin is rich in natural gas, but the reservoir is dense and heterogeneous which restricts the increase of natural gas storage and production in this area. In this paper it makes full use of cores, casting thin section observation, field emission scanning electron microscopy (FE-SEM) observation, porosity and permeability test, X-ray diffraction (XRD) analysis, high-pressure mercury injection and constant-rate mercury injection analysis to illustrate the reservoir characteristics and controlling factors of He-1 Member in the study area. Based on that, the reservoirs are divided into superior reservoirs and poor reservoirs. The superior reservoirs are mainly composed of coarse-grained sublitharenite and litharenite developed in diara with less matrix and developed dissolution pores. The poor reservoirs are mainly composed of fine-grained litharenite developed with much matrix and undeveloped pores. The difference of provenance resulted in higher quartz content in the west than in the east. The strength of hydrodynamic condition is the initial condition that determines the quality of reservoir. Early argillaceous filling results in lower original porosity in poor reservoirs. The superior reservoir is more resistant to overburden pressure due to the less matrix. And the pore fluid is more active in superior reservoir which is benefitial to the formation of disolutionpore. © 2022, Editorial Department of Earth Science. All right reserved.
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页码：1604 / 1618
页数：14
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