鄂尔多斯盆地镇原地区延长组长8段致密砂岩油藏差异油气充注历史
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摘要
受多种成藏要素控制,鄂尔多斯盆地镇原地区延长组长8段致密砂岩油藏在研究区不同地区油藏面貌和勘探成果均存在较大差异。运用流体包裹体系统分析的技术和方法,从微观上探究了镇原地区长8油层组油气充注历史,并结合宏观上油气成藏条件特征,综合分析了研究区长8段致密砂岩油藏差异油气充注历史。研究结果表明,镇原地区东部长8段油充注较为活跃,油充注成藏主要发生在早白垩世早期(133~124Ma)、早白垩世中期(115Ma)以及晚白垩世早期(95Ma);镇原地区西部长8段油充注较弱,气充注成藏主要发生在晚白垩世早期(96 Ma)。镇原地区长8段致密砂岩油藏东、西部成藏差异性主要受距盆地生烃中心距离、储层成岩作用以及构造调整作用等多种因素的共同影响。
The reservoir characteristics and the exploration result are greatly different in different areas of Chang 8 tight sandstone reservoir of Yanchang Formation in Ordos Basin owing to the multiple reservoirforming factors.In this paper,the fluid inclusion technical method is employed to explore the oil charging history in the micro aspect.Combing with the characteristic of hydrocarbon accumulation conditions,the paper analyzes the diversity hydrocarbon reservoir forming process of Chang 8 interval of Yanchang Formation.The results indicate that there was active oil charging history in the eastern region of Chang 8 interval in Zhenyuan area,and the oil charging events mainly occurred in the early period of Early Cretaceous(133-124 Ma),the middle period of Early Cretaceous(115 Ma)and the early period of Late Cretaceous(95 Ma).But the oil charging history was very weak in western region of Chang 8 interval in Zhenyuan area,and the oil charging events mainly occurred in the early period of Late Cretaceous(96 Ma).The different hydrocarbon accumulation process of Chang 8 interval in Zhenyuan area is impacted by the distance to the hydrocarbon generation center,the diagenesis of reservoir and the tectonic movement.
The reservoir characteristics and the exploration result are greatly different in different areas of Chang 8 tight sandstone reservoir of Yanchang Formation in Ordos Basin owing to the multiple reservoirforming factors.In this paper,the fluid inclusion technical method is employed to explore the oil charging history in the micro aspect.Combing with the characteristic of hydrocarbon accumulation conditions,the paper analyzes the diversity hydrocarbon reservoir forming process of Chang 8 interval of Yanchang Formation.The results indicate that there was active oil charging history in the eastern region of Chang 8 interval in Zhenyuan area,and the oil charging events mainly occurred in the early period of Early Cretaceous(133-124 Ma),the middle period of Early Cretaceous(115 Ma)and the early period of Late Cretaceous(95 Ma).But the oil charging history was very weak in western region of Chang 8 interval in Zhenyuan area,and the oil charging events mainly occurred in the early period of Late Cretaceous(96 Ma).The different hydrocarbon accumulation process of Chang 8 interval in Zhenyuan area is impacted by the distance to the hydrocarbon generation center,the diagenesis of reservoir and the tectonic movement.
引文
[1]杨伟伟,柳广弟,刘显阳,等.鄂尔多斯盆地陇东地区延长组低渗透砂岩油藏成藏机理与成藏模式[J].地学前缘,2013,20(2):132-139.
[2]邓秀芹,姚泾利,胡喜锋,等.鄂尔多斯盆地延长组超低渗透岩性油藏成藏流体动力系统特征及其意义[J].西北大学学报:自然科学版,2011,41(6):1044-1050.
[3]Zhao Yande,Sun Bainian,Duan Yi,et al.Characteristics and geological significance of fluorescence for sandstone grains and hydrocarbon extracts from low permeability reservoirs in the Ordos Basin,China[J].Arabian Journal of Geosciences,2015,12(8):10213-10223.
[4]李元昊,刘池洋,王秀娟,等.鄂尔多斯盆地西北部延长组下部幕式成藏特征[J].石油学报,2009,30(1):61-67.
[5]邓秀芹,刘新社,李士祥.鄂尔多斯盆地三叠系延长组超低渗透储层致密史与油藏成藏史[J].石油与天然气地质,2009,30(2):156-161.
[6]段毅,吴保祥,郑朝阳,等.鄂尔多斯盆地西峰油田油气成藏动力学特征[J].石油学报,2005,26(4):29-33.
[7]Luo Jinglan,Li Jian,Yang Binghu,et al.Provenance for the Chang 6and Chang 8 Member of the Yanchang Formation in the Xifeng area and in the periphery Ordos Basin:Evidence from petrologic geochemistry[J].Science in China Series D:Earth Sciences,2007,50(2):75-90.
[8]楚美娟,李士祥,刘显阳,等.鄂尔多斯盆地延长组长8油层组石油成藏机理与成藏模式[J].沉积学报,2013,31(4):683-692.
[9]张梦婷,李红,李文厚,等.鄂尔多斯盆地泾川地区延长组长81储层成岩作用于孔隙定量化研究[J].地质科技情报,2017,36(1):98-105.
[10]胡作维,李云,王海红,等.鄂尔多斯盆地镇原地区长8油层超低渗储层孔隙结构特征[J].岩性油气藏,2014,26(2):15-21.
[11]Chen Quanhong,Li Wenhou,Gao Yongxiang,et al.The deep-lake deposit in the Upper Triassic Yanchang Formation in Ordos Basin,China and its significance for oil-gas accumulation[J].Science in China Series D:Earth Sciences,2007,50(2):47-58.
[12]Yang Hua,Fu Suotang,Wei Xinshan.Geology and exploration of oil and gas in the Ordos Basin[J].Applied Geophysics,2004,2(1):103-109.
[13]Munz I A.Petroleum inclusions in sedimentary basins:Systematics,analytical methods and applications[J].Lithos,2001,55(1/4):195-212.
[14]吴悠,陈红汉,肖秋苟,等.青藏措勤盆地下白垩统活动热流体与油气成藏[J].地质科技情报,2010,32(4):621-628.
[15]李纯泉,陈红汉,刘惠民.利用油包裹体微束荧光光谱判识油气充注期次[J].地球科学:中国地质大学学报,2010,35(4):657-662.
[16]Chen Gang,Li Shuheng,Zhang Huiruo,et al.Fluid inclusion analysis for constraining the hydrocarbon accumulation periods of the Permian reservoirs in Northeast Ordos Basin[J].Journal of Earth Science,2013,24(4):589-598.
[17]梁宇,任战利,王彦龙,等.鄂尔多斯盆地子长地区延长组流体包裹体特征与油气成藏期次[J].石油与天然气地质,2011,32(2):182-191.
[18]李相博,刘显阳,周世新,等.鄂尔多斯盆地延长组下组合油气来源及成藏模式[J].石油勘探与开发,2012,39(2):172-180.
[19]Lin Senhu,Yuan Xuanjun,Tao Shizhen,et al.Geochemical characteristics of the source rocks in Mesozoic Yanchang Formation,central Ordos Basin[J].Journal of Earth Science,2013,24(5):804-814.
[20]张文正,杨华,李剑锋,等.论鄂尔多斯盆地长7段优质油源岩在低渗透油气成藏富集中的主导作用:强生排烃特征及机理分析[J].石油勘探与开发,2006,33(3):289-293.
[21]张文正,杨华,傅锁堂,等.鄂尔多斯盆地长91湖相优质烃源岩的发育机制探讨[J].中国科学:地球科学,2007,37(增刊Ⅰ):33-38.
[22]Ren Zhanli,Zhang Sheng,Gao Shengli,et al.Tectonic thermal history and its significance on the formation of oil and gas accumulation and mineral deposit in Ordos Basin[J].Science in China Series D:Earth Sciences,2007,50(2):27-38.
[23]罗晓容,张刘平,杨华,等.鄂尔多斯盆地陇东地区长81段低渗油藏成藏过程[J].石油与天然气地质,2010,31(6):770-778.
[2]邓秀芹,姚泾利,胡喜锋,等.鄂尔多斯盆地延长组超低渗透岩性油藏成藏流体动力系统特征及其意义[J].西北大学学报:自然科学版,2011,41(6):1044-1050.
[3]Zhao Yande,Sun Bainian,Duan Yi,et al.Characteristics and geological significance of fluorescence for sandstone grains and hydrocarbon extracts from low permeability reservoirs in the Ordos Basin,China[J].Arabian Journal of Geosciences,2015,12(8):10213-10223.
[4]李元昊,刘池洋,王秀娟,等.鄂尔多斯盆地西北部延长组下部幕式成藏特征[J].石油学报,2009,30(1):61-67.
[5]邓秀芹,刘新社,李士祥.鄂尔多斯盆地三叠系延长组超低渗透储层致密史与油藏成藏史[J].石油与天然气地质,2009,30(2):156-161.
[6]段毅,吴保祥,郑朝阳,等.鄂尔多斯盆地西峰油田油气成藏动力学特征[J].石油学报,2005,26(4):29-33.
[7]Luo Jinglan,Li Jian,Yang Binghu,et al.Provenance for the Chang 6and Chang 8 Member of the Yanchang Formation in the Xifeng area and in the periphery Ordos Basin:Evidence from petrologic geochemistry[J].Science in China Series D:Earth Sciences,2007,50(2):75-90.
[8]楚美娟,李士祥,刘显阳,等.鄂尔多斯盆地延长组长8油层组石油成藏机理与成藏模式[J].沉积学报,2013,31(4):683-692.
[9]张梦婷,李红,李文厚,等.鄂尔多斯盆地泾川地区延长组长81储层成岩作用于孔隙定量化研究[J].地质科技情报,2017,36(1):98-105.
[10]胡作维,李云,王海红,等.鄂尔多斯盆地镇原地区长8油层超低渗储层孔隙结构特征[J].岩性油气藏,2014,26(2):15-21.
[11]Chen Quanhong,Li Wenhou,Gao Yongxiang,et al.The deep-lake deposit in the Upper Triassic Yanchang Formation in Ordos Basin,China and its significance for oil-gas accumulation[J].Science in China Series D:Earth Sciences,2007,50(2):47-58.
[12]Yang Hua,Fu Suotang,Wei Xinshan.Geology and exploration of oil and gas in the Ordos Basin[J].Applied Geophysics,2004,2(1):103-109.
[13]Munz I A.Petroleum inclusions in sedimentary basins:Systematics,analytical methods and applications[J].Lithos,2001,55(1/4):195-212.
[14]吴悠,陈红汉,肖秋苟,等.青藏措勤盆地下白垩统活动热流体与油气成藏[J].地质科技情报,2010,32(4):621-628.
[15]李纯泉,陈红汉,刘惠民.利用油包裹体微束荧光光谱判识油气充注期次[J].地球科学:中国地质大学学报,2010,35(4):657-662.
[16]Chen Gang,Li Shuheng,Zhang Huiruo,et al.Fluid inclusion analysis for constraining the hydrocarbon accumulation periods of the Permian reservoirs in Northeast Ordos Basin[J].Journal of Earth Science,2013,24(4):589-598.
[17]梁宇,任战利,王彦龙,等.鄂尔多斯盆地子长地区延长组流体包裹体特征与油气成藏期次[J].石油与天然气地质,2011,32(2):182-191.
[18]李相博,刘显阳,周世新,等.鄂尔多斯盆地延长组下组合油气来源及成藏模式[J].石油勘探与开发,2012,39(2):172-180.
[19]Lin Senhu,Yuan Xuanjun,Tao Shizhen,et al.Geochemical characteristics of the source rocks in Mesozoic Yanchang Formation,central Ordos Basin[J].Journal of Earth Science,2013,24(5):804-814.
[20]张文正,杨华,李剑锋,等.论鄂尔多斯盆地长7段优质油源岩在低渗透油气成藏富集中的主导作用:强生排烃特征及机理分析[J].石油勘探与开发,2006,33(3):289-293.
[21]张文正,杨华,傅锁堂,等.鄂尔多斯盆地长91湖相优质烃源岩的发育机制探讨[J].中国科学:地球科学,2007,37(增刊Ⅰ):33-38.
[22]Ren Zhanli,Zhang Sheng,Gao Shengli,et al.Tectonic thermal history and its significance on the formation of oil and gas accumulation and mineral deposit in Ordos Basin[J].Science in China Series D:Earth Sciences,2007,50(2):27-38.
[23]罗晓容,张刘平,杨华,等.鄂尔多斯盆地陇东地区长81段低渗油藏成藏过程[J].石油与天然气地质,2010,31(6):770-778.