EXPERIMENTAL STUDY ON THE INFLUENCE OF PORE STRUCTURES AND DIAGENESIS ON THE PETROPHYSICAL PROPERTIES OF TIGHT SANDSTONE RESERVOIRS
文献类型:期刊论文
作者 | Zhao, Yonggang1,2; Zhang, Chunyu3; Lei, Tao4; Si, Shanghua1,2; Lai, Shenghua1,2; Li, Lei5; Shi, Liuqi6 |
刊名 | FRESENIUS ENVIRONMENTAL BULLETIN |
出版日期 | 2022 |
卷号 | 31期号:3页码:2871-2880 |
ISSN号 | 1018-4619 |
关键词 | Tight sandstone reservoirs mercury injection flakes physical property testing pore structure |
通讯作者 | Zhao, Yonggang(ygzh@xsyu.edu.cn) |
英文摘要 | The microscopic pore structures and their diagenetic evolution process of tight reservoirs have a significant impact on hydrocarbon enrichment. In this paper, the micro-geological properties of tight sandstone reservoirs in the Yanchang Formation in the northwestern Ordos Basin were systematically studied, using a large number of cores, thin sections, particle size tests, petrophysical properties tests, and mercury intrusion experiments. The research results show that the lithology of the target layer is mainly medium-fine sandstone and siltstone. The particle size of sandstone is between 0.04-0.24 mm, and the content of quartz particles is between 25% and 75%, with an average of 50%. The main types of feldspar minerals arc potash feldspar and albite, with a content ranging from 25% to 75%, with an average of 38%. The particle size probability curve shows that the curves of most samples show jumping and suspension characteristics. The particle size probability test also shows that the total suspended content of the Chang 8 Member from low to top gradually decreases, and the overall jump gradually increases, so the overall hydrodynamic conditions gradually weaken. Block bedding, parallel bedding, horizontal bedding, and cross bedding are often observed in the tight sandstone of Chang 8 Member. The main diagenesis of the Chang 8 Member are: compaction-pressure solution, cementation, dissolution, and elastic clayization. According to the mercury intrusion experiment, the tight sandstone reservoir types of the Yanchang Formation were divided into three types. Different types of sedimentary microfacies have different pore structures, which in turn affect the petrophysical properties of the reservoir. The comparison results show that the pore structures and reservoir petrophysical properties of the underwater distributary channel microfacies are the best, followed by the estuary bar microfacies and the sheet sand microfacies. Early compaction and cementation have a destructive effect on the petrophysical properties of the target layer, and the dissolution has significantly improved the petrophysical properties of the reservoir. The dissolution rate is mainly distributed in 2%-7%. |
WOS关键词 | DEPOSITIONAL FACIES ; YANCHANG FORMATION ; ORDOS BASIN ; HETEROGENEITY |
资助项目 | Natural Science Foundation of Shaanxi province, China[2019JM-381] ; National Science and Technology Major Project of China[2016ZX05050006] |
WOS研究方向 | Environmental Sciences & Ecology |
语种 | 英语 |
出版者 | PARLAR SCIENTIFIC PUBLICATIONS (P S P) |
WOS记录号 | WOS:000766411400060 |
资助机构 | Natural Science Foundation of Shaanxi province, China ; National Science and Technology Major Project of China |
源URL | [http://ir.igsnrr.ac.cn/handle/311030/173773] |
专题 | 中国科学院地理科学与资源研究所 |
通讯作者 | Zhao, Yonggang |
作者单位 | 1.Xian Shiyou Univ, Sch Earth Sci & Engn, Xian 710065, Shaanxi, Peoples R China 2.Xian Shiyou Univ, Shaanxi Key Lab Petr Accumulat Geol, Xian 710065, Shaanxi, Peoples R China 3.Southwest Petr Univ, Sch Geosci & Technol, Chengdu 610500, Sichuan, Peoples R China 4.North China Oil & Gas Co, SINOPEC, Explorat & Dev Res Inst, Zhengzhou 450000, Henan, Peoples R China 5.China Univ Petr, Coll Geosci, Beijing 102249, Peoples R China 6.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
推荐引用方式 GB/T 7714 | Zhao, Yonggang,Zhang, Chunyu,Lei, Tao,et al. EXPERIMENTAL STUDY ON THE INFLUENCE OF PORE STRUCTURES AND DIAGENESIS ON THE PETROPHYSICAL PROPERTIES OF TIGHT SANDSTONE RESERVOIRS[J]. FRESENIUS ENVIRONMENTAL BULLETIN,2022,31(3):2871-2880. |
APA | Zhao, Yonggang.,Zhang, Chunyu.,Lei, Tao.,Si, Shanghua.,Lai, Shenghua.,...&Shi, Liuqi.(2022).EXPERIMENTAL STUDY ON THE INFLUENCE OF PORE STRUCTURES AND DIAGENESIS ON THE PETROPHYSICAL PROPERTIES OF TIGHT SANDSTONE RESERVOIRS.FRESENIUS ENVIRONMENTAL BULLETIN,31(3),2871-2880. |
MLA | Zhao, Yonggang,et al."EXPERIMENTAL STUDY ON THE INFLUENCE OF PORE STRUCTURES AND DIAGENESIS ON THE PETROPHYSICAL PROPERTIES OF TIGHT SANDSTONE RESERVOIRS".FRESENIUS ENVIRONMENTAL BULLETIN 31.3(2022):2871-2880. |
入库方式: OAI收割
来源:地理科学与资源研究所
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