Origin and evolution of formation water from the Ordovician carbonate reservoir in the Tazhong area, Tarim Basin, NW China

doi:10.1016/j.petrol.2016.10.016

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院油气资源研究重点实验室

	Origin and evolution of formation water from the Ordovician carbonate reservoir in the Tazhong area, Tarim Basin, NW China
	Li, Hongxia 1; Cai, Chunfang 1,2
刊名	JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
	2017
卷号	148 页码:103-114
关键词	Formation Water Fluid Migration Water-rock Interaction Thermochemical Sulfate Reduction Environmental Isotopes Tarim Basin
DOI	10.1016/j.petrol.2016.10.016
文献子类	Article
英文摘要	Chemistry, H, O and Sr isotopes of formation waters were determined from the Ordovician carbonate reservoirs in the Tazhong area, Tarim basin. The aim is to elucidate their origin and migration and their alteration by thermochemical sulfate reduction (TSR) and water-rock interactions. The waters were originated from evaporated seawater, and are enriched in Ca and Sr, and depleted in Mg and SO4 compared with the seawater evaporation trajectory (SET), thus are considered to result from dolomitization, anhydrite dissolution and in situ TSR. delta O-18 values show positive shift due to water-rock interactions, and delta D values show negative shift with increasing TSR extents or total thiaadamantanes concentrations of the associated oils, likely resulting from hydrogen isotope exchange with TSR-H2S. However, the delta D-delta O-18 relationship was mainly controlled by the mixing with paleo-meteoric water with delta D of -50% and delta O-18 of -7.5%. Paleo-meteoric water may have leached the Silurian siliciclastic rocks and thus has Sr-87/Sr-86 up to 0.715. Upper Ordovician (O(3)l) formation water shows more negative delta D and delta O-18 values, higher Sr-87/Sr-86 ratios and lower total dissolved solids (TDS) than the O(1-2)y water, which may have resulted from mixing of paleo-meteoric water. Lower Ordovician (O(1-2)y) formation water shows Sr-87/Sr-86 ratio of 0.7095-0.7105, TDS from 160 to 240 g/l, and Sr concentrations from 300 to 1000 mg/L, which may have resulted from mixing with hydrothermal fluid up-migrated from Ediacaran and Lower Cambrian siliciclastic rocks. Significant mixings with paleo-meteoric water and hydrothermal fluid occurred at paleo-highland at the east of No. 1 Fault-Slope Zone and active faulting zone near No. 10 Structural Belt, respectively. Hydrothermal fluid and oils probably shared similar migration pathways in No. 10 Structural Belt. Formation water geochemistry may thus provide clues to constraint on petroleum migration.
WOS关键词	THERMOCHEMICAL SULFATE REDUCTION ; TRIASSIC FEIXIANGUAN FORMATION ; SALINE FORMATION WATER ; EAST SICHUAN BASIN ; ISOTOPIC COMPOSITIONS ; HYDROGEN ISOTOPES ; FLUID INCLUSIONS ; ILLINOIS BASIN ; GEOCHEMICAL EVIDENCE ; CHEMICAL EVOLUTION
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
WOS记录号	WOS:000388632600010
资助机构	China National Funds for Distinguished Young Scientists(41125009) ; China National Funds for Distinguished Young Scientists(41125009) ; NSFC(41672143) ; NSFC(41672143) ; Special Major Project on Petroleum Study(2016ZX05008-003) ; Special Major Project on Petroleum Study(2016ZX05008-003) ; China National Funds for Distinguished Young Scientists(41125009) ; China National Funds for Distinguished Young Scientists(41125009) ; NSFC(41672143) ; NSFC(41672143) ; Special Major Project on Petroleum Study(2016ZX05008-003) ; Special Major Project on Petroleum Study(2016ZX05008-003)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/53224]
专题	地质与地球物理研究所_中国科学院油气资源研究重点实验室
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 2.Yangtze Univ, Minist Educ, Key Lab Explorat Technol Oil & Gas Resources, Wuhan 430100, Peoples R China
推荐引用方式 GB/T 7714	Li, Hongxia,Cai, Chunfang. Origin and evolution of formation water from the Ordovician carbonate reservoir in the Tazhong area, Tarim Basin, NW China[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2017,148:103-114.
APA	Li, Hongxia,&Cai, Chunfang.(2017).Origin and evolution of formation water from the Ordovician carbonate reservoir in the Tazhong area, Tarim Basin, NW China.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,148,103-114.
MLA	Li, Hongxia,et al."Origin and evolution of formation water from the Ordovician carbonate reservoir in the Tazhong area, Tarim Basin, NW China".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 148(2017):103-114.