Carbonate diagenetic products and processes from various diagenetic environments in Permian paleokarst reservoirs: a case study of the limestone strata of Maokou formation in Sichuan Basin, South China

doi:10.1007/s13146-016-0296-3

	Carbonate diagenetic products and processes from various diagenetic environments in Permian paleokarst reservoirs: a case study of the limestone strata of Maokou formation in Sichuan Basin, South China
	Tian, XS （田雪松); Shi, ZJ; Yin, G; Wang, Y; Tan, Q
	2017
发表期刊	Carbonates and Evaporites
ISSN	0891-2556
卷号	32 期号:3 页码:215-230
摘要	Understanding the processes and products of carbonate diagenesis is crucial to the exploration and optimum development of palaeokarst hydrocarbon reservoirs in Permian carbonate rocks. Several well-documented outcrops and well drills in the Permian marine carbonate strata around the Sichuan Basin, South China, encompassing well-developed paleokarst landforms in the Middle-Upper Maokou Formation have been investigated. The sections and cores recording paleokarst reservoirs exhibit very similar carbonate diagenetic products and processes from various diagenetic environments by much most cementation and formation of secondary porosity in carbonates. The major diagenetic environments experience the zones of seawater, surface or near-surface atmospheric water, and subsurface mixed water between marine and meteoric. Characteristic diagenetic textures produced in each environment are described and different generations of calcite cements related to the process are responsible for their formation by sedimentary petrology and stable isotope geochemistry. Paleokarst under the constrained condition of surface and near-surface atmospheric water is the most favorable for oil-gas accumulation and presents some karst-related pores-caves-fissures with less or no fillings. Dissolution and corrosion of carbonate by atmospheric freshwater can alter the accumulation spaces and develop better fractures-caves system. These characteristic could exhibit some substantial data for better predicting porosity trends in Permian carbonate rocks and also provide important geological information for further exploring oil-gas resource in marine carbonate strata.
关键词	Diagenetic environments Permian Maokou formation Paleokarst reservoir Carbonate diagenetic products Sichuan basin
DOI	10.1007/s13146-016-0296-3
收录类别	SCI
语种	英语
WOS研究方向	Geology
WOS类目	Geology
WOS记录号	WOS:000400272000009
出版者	SPRINGER
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/13350
专题	中国科学院南京地质古生物研究所
通讯作者	Tian, XS （田雪松); Shi, ZJ
推荐引用方式 GB/T 7714	Tian, XS ,Shi, ZJ,Yin, G,et al. Carbonate diagenetic products and processes from various diagenetic environments in Permian paleokarst reservoirs: a case study of the limestone strata of Maokou formation in Sichuan Basin, South China[J]. Carbonates and Evaporites,2017,32(3):215-230.
APA	Tian, XS ,Shi, ZJ,Yin, G,Wang, Y,&Tan, Q.(2017).Carbonate diagenetic products and processes from various diagenetic environments in Permian paleokarst reservoirs: a case study of the limestone strata of Maokou formation in Sichuan Basin, South China.Carbonates and Evaporites,32(3),215-230.
MLA	Tian, XS ,et al."Carbonate diagenetic products and processes from various diagenetic environments in Permian paleokarst reservoirs: a case study of the limestone strata of Maokou formation in Sichuan Basin, South China".Carbonates and Evaporites 32.3(2017):215-230.