Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1306/0130191608617115 |
Natural fractures in tight-oil sandstones: A case study of the Upper Triassic Yanchang Formation in the southwestern Ordos Basin, China | |
Lyu, Wenya1,2; Zeng, Lianbo1,2; Zhou, Sibin3; Du, Xiaosheng3; Xia, Dongling4; Liu, Guoping1,2; Li, Jian1,2; Weng, Jianqiao1,5 | |
2019-10-01 | |
发表期刊 | AAPG BULLETIN |
ISSN | 0149-1423 |
EISSN | 1558-9153 |
出版年 | 2019 |
卷号 | 103期号:10页码:2343-2367 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Natural fractures are important storage spaces and fluid-flow channels in tight-oil sandstones. Intraformational open fractures are the major channels for fluid flow in tight-oil sandstones. Small faults may provide fluid-flow channels across different layers. According to analogous outcrops, cores, and borehole image logs, small faults and intraformational open fractures are developed in the tight-oil sandstones of the Upper Triassic Yanchang Formation in the southwestern Ordos Basin, China. Among them, high dip-angle intraformational open fractures are the most abundant. Northeast-southwest-trending fractures are the principal fractures for fluid flow because that is the present-day maximum horizontal compressive stress direction. Combined with production data, horizontal wells, striking normal to or at a large angle relative to the major flow pathways, are beneficial for tight-oil production improvement. Fractures with high dip angles are the main factor that influences initial oil production. Linkage and tip damage zones are more favorable for oil production improvement than wall damage zones. This study provides an example of natural fracture characterization and unravels fracture contributions to reservoir physical properties and oil production of tight-oil sandstones, which could provide a geological basis for oil exploration and development in tight sandstones. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000489899900004 |
WOS关键词 | PICEANCE BASIN ; DAMAGE ZONES ; IMAGE LOGS ; EXTENSIONAL FAULTS ; DEFORMATION BANDS ; GAS-RESERVOIRS ; FLUID-FLOW ; PERMEABILITY ; STRESS ; FIELD |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/187159 |
专题 | 地球科学 |
作者单位 | 1.China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing, Peoples R China; 2.China Univ Petr, Coll Geosci, Beijing, Peoples R China; 3.Sinopec, Huabei Branch Co, Res Inst Petr Explorat & Dev, Zhengzhou, Henan, Peoples R China; 4.Sinopec, Petr Explorat & Prod Res Inst, Beijing, Peoples R China; 5.Sichuan Key Lab Shale Gas Evaluat & Exploitat, Chengdu, Sichuan, Peoples R China |
推荐引用方式 GB/T 7714 | Lyu, Wenya,Zeng, Lianbo,Zhou, Sibin,et al. Natural fractures in tight-oil sandstones: A case study of the Upper Triassic Yanchang Formation in the southwestern Ordos Basin, China[J]. AAPG BULLETIN,2019,103(10):2343-2367. |
APA | Lyu, Wenya.,Zeng, Lianbo.,Zhou, Sibin.,Du, Xiaosheng.,Xia, Dongling.,...&Weng, Jianqiao.(2019).Natural fractures in tight-oil sandstones: A case study of the Upper Triassic Yanchang Formation in the southwestern Ordos Basin, China.AAPG BULLETIN,103(10),2343-2367. |
MLA | Lyu, Wenya,et al."Natural fractures in tight-oil sandstones: A case study of the Upper Triassic Yanchang Formation in the southwestern Ordos Basin, China".AAPG BULLETIN 103.10(2019):2343-2367. |
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