Origin and evolution of oilfield waters in the Tazhong oilfield, Tarim Basin, China, and their relationship to multiple hydrocarbon charging events

doi:10.1016/j.marpetgeo.2018.09.018

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	Origin and evolution of oilfield waters in the Tazhong oilfield, Tarim Basin, China, and their relationship to multiple hydrocarbon charging events
	Chen, Jian 1; Liu, Dayong 1; Hou, Xiaolin 2; Fan, Yukun 2; Jia, Wanglu 1; Peng, Ping'an 1,3; Zhang, Baoshou 4; Xiao, Zhongyao 4
通讯作者	Chen, Jian(chenjian@gig.ac.cn)
	2018-12-01
发表期刊	MARINE AND PETROLEUM GEOLOGY
ISSN	0264-8172
卷号	98 页码:554-568
摘要	We conducted a chemical and isotopic study of oilfield waters from Ordovician limestone reservoirs in the Tazhong oilfield (Tarim Basin, China) to trace the origin and evolution of the waters, and to demonstrate their possible relationship with hydrocarbon charging. The elemental chemistry (Cl, Br, SO4, I, K, Na, Ca, Mg, and Sr) and multiple isotopic compositions (delta D, delta O-18, Sr-87/Sr-86, and 129 I/I) of the oilfield waters were determined. The results show that these oilfield waters contain basinal brines that infiltrated in three stages, along with a lesser contribution from meteoric water. The meteoric water appears to have infiltrated downwards during the late Silurian and Carboniferous. The earliest brine had very low I contents (< 5.65 mg/L) and migrated upwards from organic-poor Cambrian to Lower Ordovician dolostones during the Late Ordovician. The second brine had high I contents (> 50 mg/L), was derived from Cambrian argillaceous source rocks, and migrated upwards into Ordovician reservoirs. This stage was related to the main period of migration of crude oils out of the source rocks into reservoirs during the Silurian and Devonian. Both of these brines incorporated constant levels of fissiogenic I-129 from the limestone reservoir rocks (11.8-47.0 atom/mu L). Finally, brine with very low I contents, but higher I-129 (106-491 atom/mu L), began to migrate upwards and infiltrate reservoirs. Given the relatively high fissiogenic I-129, this stage may have occurred during the late Cenozoic, and was associated with migration of dry gas from the same source rocks. Our results, combined with those of a previous study of other oilfields in the basin, suggest that the evolutionary of oilfield waters can be used to constrain hydrocarbon accumulation events, and both of which were ultimately controlled by regional tectonism and local geological factors.
关键词	Oilfield waters Tarim basin Hydrocarbon migration Iodine-129 Gas invasion
DOI	10.1016/j.marpetgeo.2018.09.018
关键词[WOS]	THERMOCHEMICAL SULFATE REDUCTION ; ORDOVICIAN CARBONATES ; SOURCE AGES ; ISOTOPIC COMPOSITION ; RESIDENCE TIMES ; ILLINOIS BASIN ; TRACE-ELEMENTS ; CRUSTAL FLUIDS ; NATURAL I-129 ; SEA-WATER
收录类别	SCI ; SCI
语种	英语
资助项目	Natural Science Foundation of China[41503051] ; National Petroleum Project[2017ZX05008-003] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA14010102]
WOS研究方向	Geology
项目资助者	Natural Science Foundation of China ; National Petroleum Project ; Strategic Priority Research Program of the Chinese Academy of Sciences
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000451360000036
出版者	ELSEVIER SCI LTD
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/14544
专题	加速器质谱中心
通讯作者	Chen, Jian
作者单位	1.Chinese Acad Sci, Guangzhou Inst Ire Geochem, SKLOG, 511 Kehua St, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, Shaanxi Key Lab Accelerator Mass Spectrometry Tec, Xian AMS Ctr,SKLLQG, 97 Yanxiang St, Xian 710061, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.PetroChina, Tarim Oilfield Co, Kuerle 841000, Peoples R China
推荐引用方式 GB/T 7714	Chen, Jian,Liu, Dayong,Hou, Xiaolin,et al. Origin and evolution of oilfield waters in the Tazhong oilfield, Tarim Basin, China, and their relationship to multiple hydrocarbon charging events[J]. MARINE AND PETROLEUM GEOLOGY,2018,98:554-568.
APA	Chen, Jian.,Liu, Dayong.,Hou, Xiaolin.,Fan, Yukun.,Jia, Wanglu.,...&Xiao, Zhongyao.(2018).Origin and evolution of oilfield waters in the Tazhong oilfield, Tarim Basin, China, and their relationship to multiple hydrocarbon charging events.MARINE AND PETROLEUM GEOLOGY,98,554-568.
MLA	Chen, Jian,et al."Origin and evolution of oilfield waters in the Tazhong oilfield, Tarim Basin, China, and their relationship to multiple hydrocarbon charging events".MARINE AND PETROLEUM GEOLOGY 98(2018):554-568.