Geochemical characteristics and origin of reservoir bitumen in Wangcun paleo-reservoir, western Hunan Province
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摘要: 在对中扬子湘西地区新发现的王村古油藏储层沥青地球化学特征进行分析的基础上,探讨了古油藏的油源。王村古油藏下奥陶统和上寒武统追屯组储层沥青反射率介于3.09%~4.08%之间,具有富氢、贫氧、富碳的特征,为高热演化的焦沥青。下奥陶统和上寒武统储层沥青地球化学特征非常相似,揭示具有共同的来源。应用生物标志化合物、碳同位素方法开展的油源对比研究表明,王村古油藏沥青主要源自下寒武统烃源岩。Abstract: It was analyzed in this paper the geochemical characteristics and the origin of reservoir bitumen in Wangcun paleo-reservoir in the western Hunan Province,the middle Yangtze region.The reflectance of reservoir bitumen from the Lower Ordovician to the Upper Cambrian Zhuitun Formation ranged from 3.09% to 4.08%.The bitumen was rich in H and C,poor in O,and was highly mature.From the Lower Ordovician to the Upper Cambrian,geochemical characteristics of bitumen were similar,indicating the same source.Oil-source correlation studies with biomarker and carbon isotope showed that the bitumen in the Wangcun paleo-reservoir mainly originated from the Lower Cambrian source rocks.
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Key words:
- bitumen /
- carbon isotope /
- biomarker /
- oil-source correlation /
- Wangcun paleo-reservoir /
- western Hunan Province
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[1] 金之钧,周雁.我国南方王村上寒武统大型古油藏的首次发现[J].天然气地球科学,2009,20(2):1-3. [2] 刘德汉,史继扬.高演化碳酸盐烃源岩非常规评价方法探讨[J].石油勘探与开发,1994,21(3):113-115. [3] Peters K E.Moldowan J M.The biornarker guide:interpreting molecular fossils in pertroleum an ancient sediments[M].New Jersey:Prentice Hall,1993. [4] De Leeuw J W.Cox H C.Van G G.et al.Limited double bond isomerisation and selective hydrogenation of sterenes during early diagenesia[J].Geochimica et Cosmoehimica Acta,1989,53(4):903-909. [5] 朱扬明,张春明,张敏,等.沉积环境的氧化还原性对重排甾烷形成的作用[J].沉积学报,1997,15(4):104-108. [6] 金强,田海芹,戴俊生.微量元素组成在固体沥青-源岩对比中的应用[J].石油实验地质,2001,23(3):285-290. [7] 赵宗举,冯加良,陈学时,等.湖南慈利灯影组古油藏的发现及意义[J].石油与天然气地质,2001,22(2):114-118. [8] 丁道桂,刘光祥,陈玉华,等.江南-雪峰山前缘油气聚集及烃源对比:南方构造问题之三[J].石油实验地质,2007,29(4):345-354. [9] Machel H G.Krouse H R Sassen R.Products and distinguishing criteria of bacterial and thermoehemical sulfate reduction[J],Applied Geochemistry,1995,10(4):373-389. [10] 蔡勋育,朱扬明,黄仁春.普光气田沥青地球化学特征及成因[J].石油与天然气地质.2006.27(3):340-347. -
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