气候变化领域集成服务门户(CCPortal): Small-scale petroliferous basins in China: Characteristics and hydrocarbon occurrence

CCPortal

DOI	10.1306/0130191608217014
	Small-scale petroliferous basins in China: Characteristics and hydrocarbon occurrence
	Liu C.-Y.; Huang L.; Zhao H.-G.; Wang J.-Q.; Zhang L.; Deng Y.; Zhao J.-F.; Zhang D.-D.; Fan C.-Y.
发表日期	2019
ISSN	0149-1423
卷号	103 期号:9
英文摘要	A large number of small-scale lacustrine sedimentary basins are widely distributed across China. Studies of such basins have been limited. These basins have complex characteristics and thus exhibit significant differences in terms of their hydrocarbon potential. At present, among the known 348 small-scale basins with areas less than 20,000 km2 (<7700 mi2), 13 commercial petroliferous lacustrine basins have been identified. Of these, some are referred to as “small but enriched” because they have hydrocarbon abundances per unit area that are far higher than large- to medium-sized petroliferous basins. Small-scale petroliferous basins can be divided into the following two types based on their characteristics and causes for their small size: remnant and proto–small-scale basins. Remnant basins are sedimentary basins retained from predecessor large basins that were far larger than 20,000 km2 (7700 mi2) and have undergone later modification because of tectonic deformation and erosion; it is conspicuous that later modifications caused their small size. Examples of remnant basins include the Jiuxi, Jiudong, Yanqi, and Santanghu Basins. Proto–small-scale basins are small basins during their entire evolutionary history, and either they did not experience later modifications or the old basin was a small-scale basin before modification and it was their dynamics that caused their small size. According to differences in their formation dynamics responsible for their small size, the proto–small-scale basin can be divided into two subtypes: thermal basins and strike-slip basins. The thermal basin formation and evolution are reflective of a deep thermal origin; that is, there is direct or indirect evidence for existing asthenospheric upwelling that led to basin formation, and examples of thermal basins include the Nanxiang and Jinggu Basins. Strike-slip basin formation was closely related to activity on large strike-slip fault systems, and examples of strike-slip basins include the Yitong, Baise, Sanshui, Baoshan, Luliang, Qujing, and Lunpola Basins. For these small-scale lacustrine basins, the most important fact contributing to the formation of hydrocarbons and reservoirs is that these basins allowed for the deposition, preservation, and maturation of high-quality hydrocarbon source rocks. Furthermore, three common key factors that significantly affected the hydrocarbon occurrence within small-scale sedimentary basins are as follows: (1) a later modification process that benefits the preservation and maturation of the high-quality source rocks (i.e., the uplift and erosion without the destruction of main source rocks followed by basin subsidence), (2) a high geothermal background characterized by high geothermal gradient and hydrothermal activity, and (3) an elevated deep-lake sedimentation rate (>200 m/m.y. [>656 ft/m.y.]) during deposition of the source rocks within underfilled and balanced-filled lakes. Copyright © 2019. The American Association of Petroleum Geologists. All rights reserved.
语种	英语
scopus关键词	Erosion; Gasoline; Lakes; Sedimentary rocks; Sedimentation; Sedimentology; Settling tanks; Strike-slip faults; Complex characteristics; High-quality source rocks; Hydrocarbon potential; Hydrocarbon source rocks; Hydrothermal activity; Petroliferous basins; Strike-slip fault systems; Tectonic deformations; Hydrocarbons; basin evolution; complexity; crustal deformation; geothermal gradient; hydrocarbon reservoir; maturation; sedimentation rate; strike-slip fault; uplift; upwelling; Baise Basin; Baoshan [Shanghai]; China; Guangxi Zhuangzu; Jilin; Jinggu Basin; Luliang; Qujing; Shanghai; Yitong; Yunnan
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/125047
作者单位	State Key Laboratory of Continental Dynamics, Northwest University, Xi’an, China; School of Earth Sciences and Engineering, Xi’an Shiyou University, Xi’an, Shaanxi, China
推荐引用方式 GB/T 7714	Liu C.-Y.,Huang L.,Zhao H.-G.,et al. Small-scale petroliferous basins in China: Characteristics and hydrocarbon occurrence[J],2019,103(9).
APA	Liu C.-Y..,Huang L..,Zhao H.-G..,Wang J.-Q..,Zhang L..,...&Fan C.-Y..(2019).Small-scale petroliferous basins in China: Characteristics and hydrocarbon occurrence.AAPG Bulletin,103(9).
MLA	Liu C.-Y.,et al."Small-scale petroliferous basins in China: Characteristics and hydrocarbon occurrence".AAPG Bulletin 103.9(2019).