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DOI	10.1306/10261816501
	Flow pathway and evolution of water and oil along reverse faults in the northwestern Sichuan Basin; China
	Fan C.; Braathen A.; Wang Z.; Zhang X.; Chen S.; Feng N.; Wang A.; Huang L.
发表日期	2019
ISSN	0149-1423
起始页码	1153
结束页码	1177
卷号	103 期号:5
英文摘要	As a three-dimensional geological body, a fault zone has a complex internal structure. Disputes remain over flow pathways of fluids within fault zones. Well and seismic data cannot be used to effectively identify the internal structures of a fault zone. Furthermore, continuous core sampling in fault zones is commonly limited. Fewer studies of flow pathways along reverse faults are done in a sedimentary basin. Through extensive outcrop observations, sampling, and measurements in the northwestern Sichuan Basin of China, this study enhances our understanding of fluid evolution and the main pathway of vertical fluid flow along a reverse fault. In the studied carbonates, deep hot brine initially entered the fault zone and migrated upward along the fault core, then moved to shallow strata, mixed with meteoric water, and cooled in the fault zone. In the studied sandstone and shale, a paleo-oil pool formed in the fault damage zone. After that, forced by uplift and reactivation, oil migrated into the fault core along fractures and was cooled, washed, biodegraded, and oxidized by meteoric water. In the sandstone–sandstone juxtaposition faults, the oil shows are distinctly different between hanging wall and footwall. Fault rocks (sand and shale gouges) that developed along the principal slip surface seem to have prevented fluid flow across the fault. This evidence suggests that fault core and inner damaged zone are the main pathways of vertical fluid flow along the investigated reverse fault zone. Copyright ©2019. The American Association of Petroleum Geologists. All rights reserved.
语种	英语
scopus关键词	Flow of fluids; Sandstone; Seismology; Shale; Structural geology; Fault damage zone; Fluid evolution; Geological bodies; Internal structure; Meteoric waters; Reverse faults; Sedimentary basin; Vertical fluid flow; Fault slips; fault zone; fluid flow; hanging wall; outcrop; reverse fault; sandstone; sedimentary basin; seismic data; uplift; China; Sichuan Basin
来源期刊	AAPG Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/143766
作者单位	State Key Laboratory of Continental Dynamics, Department of Geology, National and Local Joint Engineering Research Center for Carbon Capture and Sequestration Technology, Northwest University, Xi’an, China; Department of Geosciences, University of Oslo, Oslo, Norway; Hydrocarbon Accumulation Branch, Laboratory of State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an, China; Department of Geology, State Key Laboratory of Continental Dynamics, Northwest University, Xi’an, China
推荐引用方式 GB/T 7714	Fan C.,Braathen A.,Wang Z.,et al. Flow pathway and evolution of water and oil along reverse faults in the northwestern Sichuan Basin; China[J],2019,103(5).
APA	Fan C..,Braathen A..,Wang Z..,Zhang X..,Chen S..,...&Huang L..(2019).Flow pathway and evolution of water and oil along reverse faults in the northwestern Sichuan Basin; China.AAPG Bulletin,103(5).
MLA	Fan C.,et al."Flow pathway and evolution of water and oil along reverse faults in the northwestern Sichuan Basin; China".AAPG Bulletin 103.5(2019).