Research on the Relationship between Surplus Pressure and Hydrocarbon Accumulation of Yanchang Formation in Xunyi Block, South of Ordos Basin
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摘要: 旬宜区块延长组主力产油层是长3段，在长6段和长7段仅个别井点钻遇油藏，无法明确其油气富集规律。因此，在总结前人研究成果的基础上，运用成藏动力学、压力封存箱等原理，结合岩心化验分析资料，分析延长组剩余压力发育特征，探讨其与油气成藏关系。研究表明，纵向上，压力结构决定了油藏的发育层位，即长7油藏在受控于突变压力结构在压力封存箱内油气聚集，长3和长6油藏在渐变压力结构作用下在上部渐变带聚集成藏；横向上，剩余压力控制了油气藏平面展布，长6和长7油藏均位于剩余压力较大的区域，充注动力足，有利于油气成藏。该研究对旬宜区块延长组致密油的下步勘探部署具有指导意义。Abstract: Chang 3 member is the main oil producing layerin Yanchang formation of Xunyi Block.On the basis of the previous research,this paper analyzes the development characteristics of the surplus pressure and the relationship between surplus pressure and hydrocarbon accumulationusing the principles of reservoir forming dynamics and pressure seal box, combined with the core test and the analysis data.The results show that:vertically, the pressure structure decides the development horizon of the reservoir, i.e. Chang 7 reservoir accumulates oil and gas in the pressure storage tank under a sudden pressure structure; Chang 3 and Chang 6 reservoir accumulates in the upper gradual change zone under a gradual changing pressure structure.Horizontally,the surplus pressure controls the plane distribution of oil and gas reservoirs.Both Chang 6 and Chang 7 reservoirs are located in the area with high residual pressure and sufficient charging power, which is conducive to hydrocarbon accumulation. The research is of guiding significance for the future exploration and deployment of tight oil in Yanchang formation of Xunyi block.
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Keywords:
- Xunyi block /
- pressure structure type /
- surplus pressure /
- hydrocarbon accumulation
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吴永平,王允诚,李仲东,等.镇泾地区地层异常压力与油气运聚关系[J].西南石油大学学报(自然科学版),2008,30(1):47-50. WU Yongping,WANG Yuncheng,LI Zhongdong,et a1.The relation between abnormal pressure and oil migration in Zhenjing Region[J].Joumal of southwest Petroleum University(Science&Technology Edition),2008,30(1):47-50.
解习农,刘晓峰,胡祥云.异常压力盆地流体动力学[M].北京:中国地质大学出版社,2006. XIE Xinong,LIU Xiaofeng,HU Xiangyun.Basin Fluid Dynamics in Abnormally Pressured Environments[M].Beijing:China University of Geosciences Press,2006.
李兴文,李仲东,过敏,等.鄂尔多斯麻黄山西区中生界过剩压力与油气关系[J].石油勘探与开发,2011,38(3):294-298. LI Xingwen,LI Zhongdong,GUO Min,et a1.Relation of overpressure and hydrocarbons in the Mesozoic of western Mahuangshan,Ordos Basin[J].Petroleum Exploration and Development,2011,38(3):294-298.
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. ZHANG Wenhua,YANG Hua,LI Jianfeng,et a1.Leading effect of high-class source rock of Chang7 in Ordos Basin on enrichment of low permeability oil-gas accumulation-Hydrocarbon generation and expulsion mechanism[J].Petroleum Exploration and Development,2006,33(3):289-293.
宋和平,张炜.鄂尔多斯盆地下寺湾地区三叠系下组合地层石油地质特征及勘探方向[J].西北地质,2011,44(4):122-131. SONG Heping,ZHANG Wei.Oil Geological Characteristics and Exploration Trend of Triassic Lower Group in Xiasiwan Area of Ordos Basin[J].Northwestern Geology,2011,44(4):122-131.
郑忠文,吴彦君.鄂尔多斯盆地丰富川油田西部探区延长组沉积演化特征研究[J].西北地质,2014,47(3):110-120. ZHENG Zhongwen,WU Yanjun.Study on Sedimentary and Evolution Characteristics of the Yanchang Formation in Western Exploratory Area of Fengfuchuan Oilfield in Ordos Basin[J].Northwestern Geology,2014,47(3):110-120.
范玉海,屈红军,王辉,等.鄂尔多斯盆地西部延长组下组合异常压力与油气分布[J].新疆石油地质,2013,32(1):14-16. FAN Yumei,QU Hongjun,WANG Hui,et a1.Abnormal Pressure of Lower Assemblage of Yanchang Formation and Its Hydrocarbon Distribution in Western Ordos Basin[J].Xinjiang Petroleum Geology,2013,32(1):14-16.
周鑫,董浩,董马超,等.鄂尔多斯盆地中西部长8段过剩压力与油气聚集[J].重庆科技学院学报(自然科学版),2015,17(5):10-14. ZHOU Xin,DONG Hao,DONG Machao,et a1.The Relationship between Abnormal Pressure and Hydrocarbon Accumulation in Chang 8 Section of Midwest Ordos Basin[J].Journal of Chongqing University of Science and Technology(Natural Sciences Edition),2015,17(5):10-14.
袁广金,刑芬,高倩,等.鄂尔多斯盆地下寺湾油田长2储层高含水低稳产特征与主控因素研究[J].西北地质,2017,50(4):200-208. YUAN Guangjin,XING Fang,GAO Qian,et a1.Characteristics and Main Controlling Factors of Chang 2 Reservoir with Low Stable Production and High Water Cut in the Xiasiwan Oilfield, Ardos Basin[J].Northwestern Geology,2017,50(4):200-208.
宋健,孟旺才,邓南涛,等.鄂尔多斯盆地富黄地区延长组储层特征及物性影响因素分析[J].西北地质,2019,52(1):98-108. SONG Jian,MENG Wangcai,DENG Nantao,et a1.Features and Influencing Factors of Yangchang Formation Reservoir in Fuxian-Huangling ExplorationArea,Erdos Basin[J].Northwestern Geology,2019,52(1):98-108.
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