Formation mechanisms of rudstones and their effects on reservoir quality in the Shulu sag, Bohai Bay Basin, Eastern China

doi:10.1007/s12583-016-0944-5

	Formation mechanisms of rudstones and their effects on reservoir quality in the Shulu sag, Bohai Bay Basin, Eastern China
	Liu, Xufeng 1; Zheng, Lijing 2; Jiang, Zaixing 1; Kong, Xiangxin 1
刊名	JOURNAL OF EARTH SCIENCE
	2017-12-01
卷号	28 期号:6 页码:1097-1108
关键词	Rock Type Formation Mechanism Depositional Model Reservoir Quality Shulu Sag
ISSN号	1674-487X
DOI	10.1007/s12583-016-0944-5
文献子类	Article
英文摘要	Based on observations made on cores and cuttings from several wells in the lowermost part of the third member of the Shahejie Formation, several rock types, specifically clast-supported rudstone, matrix-supported rudstone, mixed-source rudstone, calcisiltite/calcarenite, massive calcilutite and laminated calcilutite, have been identified in the Shulu sag. According to the sedimentary structures and distribution characteristics of these rocks, the carbonate breccias fall into two categories, based on their origins: one formed by fan-delta channel sedimentation, whereas the other formed by earthquake-induced slump fan deposition. Clast-supported rudstone and matrixsupported rudstone are the main lithologies deposited by braided rivers in the fan delta plain and front, of which the pore space is mainly dissolution pores within gravels and tectonic fissures. Clastsupported rudstone, matrix-supported rudstone and mixed-source rudstone are the main lithologies of the earthquake-induced slump fans. These carbonate breccias developed along with soft-sediment deformation structures, which are interpreted as seismites and are widely distributed in the sag, in which intercrystalline pores, intergranular pores and fissures created from diagenetic shrinkage are developed. The two kinds of rudstones have different reservoir characteristics and oil/gas testing results. The rudstones generated in the fan delta have higher porosity and permeability, as well as better oil/gas testing results. Thus, they are key targets for petroleum exploration.
WOS关键词	PALEOSEISMIC EVENTS ; LATE MIOCENE ; NORTH CHINA ; SE SPAIN ; SEISMITES ; SEDIMENT ; DEPOSITS ; LIQUEFACTION ; EARTHQUAKES
WOS研究方向	Geology
语种	英语
出版者	CHINA UNIV GEOSCIENCES, BEIJING
WOS记录号	WOS:000418301900012
资助机构	China National Science and Technology Major Project(2011ZX05009-002) ; China National Science and Technology Major Project(2011ZX05009-002) ; China National Science and Technology Major Project(2011ZX05009-002) ; China National Science and Technology Major Project(2011ZX05009-002) ; China National Science and Technology Major Project(2011ZX05009-002) ; China National Science and Technology Major Project(2011ZX05009-002) ; China National Science and Technology Major Project(2011ZX05009-002) ; China National Science and Technology Major Project(2011ZX05009-002)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/82216]
专题	中国科学院地质与地球物理研究所
通讯作者	Zheng, Lijing
作者单位	1.China Univ Geosci, Sch Energy Resources, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xufeng,Zheng, Lijing,Jiang, Zaixing,et al. Formation mechanisms of rudstones and their effects on reservoir quality in the Shulu sag, Bohai Bay Basin, Eastern China[J]. JOURNAL OF EARTH SCIENCE,2017,28(6):1097-1108.
APA	Liu, Xufeng,Zheng, Lijing,Jiang, Zaixing,&Kong, Xiangxin.(2017).Formation mechanisms of rudstones and their effects on reservoir quality in the Shulu sag, Bohai Bay Basin, Eastern China.JOURNAL OF EARTH SCIENCE,28(6),1097-1108.
MLA	Liu, Xufeng,et al."Formation mechanisms of rudstones and their effects on reservoir quality in the Shulu sag, Bohai Bay Basin, Eastern China".JOURNAL OF EARTH SCIENCE 28.6(2017):1097-1108.