松辽坳陷盆地水侵期湖底扇沉积特征及地球物理响应
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摘要
综合利用井筒资料、分析化验资料、岩心资料和薄片鉴定资料,研究了松辽盆地英台—他拉哈地区青一、二段湖底扇的沉积特征。结果表明,湖底扇由英台扇三角洲前缘相带的砂体整体滑塌并近距离搬运所形成,形成过程具多期次性。湖底扇具有敏感的地震响应。充分利用三维地震资料,通过井震精细标定、地震动力学参数提取、等时切片、储层反演等综合手段,精细刻划了砂体的空间分布特征。综合分析认为,湖底扇在平面上叠加连片,空间上呈透镜体展布;湖底扇具有较大油气勘探潜力,勘探目标以岩性油藏为主。
The sublacustrine fan deposits were discovered in the K2qn1 and K2qn2 of Yingtai-Talaha area of Songliao Basin by using the integrated methodology of geology and geophysics.The data of well bore,testing,core and thin section showed that the sublacustrine fan deposits were resulted from the entire slump and short-distance transportation of sand bodies in the fan delta front of Yingtai area.The sublacustrine fan was characterized by the sensible seismic response.The 3D seismic data from Yingtai-Talaha area were applied to determine the geophysical response characteristics of the sublacustrine fan,to describe the distribution of sand bodies and to define the boundary and distribution range of the sublacustrine fan by the fine calibration of logs and seismic reflection event,and the extraction of seismic dynamic parameters,horizontal section and reservoir inversion.The integrative analyses showed that reservoir sand bodies of the sublacustrine fan stacked in plane and stretched in the shape of a lens in space.It indicates that the sublacustrine fan has beneficial exploration potentiality,and the lithologic reservoirs are the main exploration targets.
The sublacustrine fan deposits were discovered in the K2qn1 and K2qn2 of Yingtai-Talaha area of Songliao Basin by using the integrated methodology of geology and geophysics.The data of well bore,testing,core and thin section showed that the sublacustrine fan deposits were resulted from the entire slump and short-distance transportation of sand bodies in the fan delta front of Yingtai area.The sublacustrine fan was characterized by the sensible seismic response.The 3D seismic data from Yingtai-Talaha area were applied to determine the geophysical response characteristics of the sublacustrine fan,to describe the distribution of sand bodies and to define the boundary and distribution range of the sublacustrine fan by the fine calibration of logs and seismic reflection event,and the extraction of seismic dynamic parameters,horizontal section and reservoir inversion.The integrative analyses showed that reservoir sand bodies of the sublacustrine fan stacked in plane and stretched in the shape of a lens in space.It indicates that the sublacustrine fan has beneficial exploration potentiality,and the lithologic reservoirs are the main exploration targets.
引文
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[14]黄薇,王建功,赵应成,等.松辽盆地拗陷期坡折带特征[J].石油学报,2007,28(4):31-35.Huang Wei,Wang Jiangong,Zhao Yingcheng,et al.Characteris-tics of slope break in depression stage of Songliao Basin[J].ActaPetrolei Sinica,2007,28(4):31-35.
[2]Bouma A H,Stone C G.Fine-grained turbidite systems[G].AAPG Memoir72/SEPM Special Publication No.68,2000:1-19.
[3]Elliott T.Megaflute erosion surfaces and the initiation of turbi-dite channels[J].Geology,2000,28(2):119-122.
[4]Prins M A,Postma G.Effects of climate,sea level,and tectonicsunraveled for last deglaciation turbidite records of the ArabbianSea[J].Geology,2000,28(4):375-378.
[5]Varnai P.Three-dimensional seismic stratigaphic expression ofPliocene-Pleistocene turbidite systems,northern Green Canyon(offshore Louisiana),northern Gulf of Mexico[J].AAPG Bulle-tin,1998,82(5B):986-1012.
[6]Weimer P,Link M H.Seismic facies and sedimentary processesof submarine fans and turbidite systems[M].New York:Spring-er-Verlag,1991:447.
[7]刘宪斌,万晓樵,林金逞,等.陆相浊流沉积体系与油气[J].地球学报,2003,24(1):61-66.Liu Xianbin,Wan Xiaoqiao,Lin Jincheng,et al.Continental turbi-dite deposition system and hydrocarbon[J].Acta GeoscientiaSinica,2003,24(1):61-66.
[8]刘丽军,佟彦明,纪云龙,等.北部湾盆地福山凹陷流沙港组湖底扇沉积特征及发育背景[J].石油实验地质,2003,25(2):110-115.Liu Lijun,Tong Yanming,Ji Yunlong,et al.Sedimentary charac-teristics and developing background of the sublacustrine fan inthe Liushagang Formation of the Fushan Depression,the Beibu-wan Basin[J].Petroleum Geology and Experiment,2003,25(2):110-115.
[9]林畅松,郑和荣,任建业,等.渤海湾盆地东营、沾化凹陷早第三纪同沉积断裂作用对沉积充填的控制[J].中国科学:D辑,2003,33(11):1025-1036.Lin Changsong,Zheng Herong,Ren Jianye,et al.The Early Ter-tiary syn-sedimentary fracture controlled the deposit filling inDongying and Zhanhua depressions of Bohaiwan Bay Basin[J].Science in China:Series D,2003,33(11):1025-1036.
[10]陈昊,张洪波,曹学良,等.东濮凹陷文东地区沙三中亚段沉积相及砂体类型分析[J].石油勘探与开发,2006,33(1):32-35.Chen Hao,Zhang Hongbo,Cao Xueliang,et al.Facies and sandbody types of the middle sub-section of the Es3Formation inWendong,Dongpu Sag[J].Petroleum Exploration and Develop-ment,2006,33(1):32-35.
[11]周廷全,鲜本忠,林会喜,等.车镇凹陷陡坡带古近系湖底扇沉积规律及储层特征[J].油气地质与采收率,2007,14(2):23-28.Zhou Tingquan,Xian Benzhong,Lin Huixi,et al.Sedimentaryrules and reservoir characteristics of sublacustrine fan in Paleo-gene in steep slope of Chezhen Sag[J].Petroleum Geology andRecovery Efficiency,2007,14(2):23-28.
[12]冯志强,张顺,解习农,等.松辽盆地嫩江组大型陆相坳陷湖盆湖底水道的发现及其石油地质意义[J].地质学报,2006,80(8):1226-1232.Feng Zhiqiang,Zhang Shun,Xie Xinong,et al.Discovery of alarge-scale lacustrine subaqueous channel in the Nenjiang Forma-tion of the Songliao Basin and its implication on petroleum geolo-gy[J].Acta Geologica Sinica,2006,80(8):1226-1232.
[13]王建功,卫平生,郑浚茂,等.挠曲坡折带特征与油气勘探———以松辽盆地南部为例[J].石油学报,2005,26(2):26-29.Wang Jiangong,Wei Pingsheng,Zheng Junmao,et al.Features offlexure slope break and oil-gas exploration in the south of Songli-ao Basin[J].Acta Petrolei Sinica,2005,26(2):26-29.
[14]黄薇,王建功,赵应成,等.松辽盆地拗陷期坡折带特征[J].石油学报,2007,28(4):31-35.Huang Wei,Wang Jiangong,Zhao Yingcheng,et al.Characteris-tics of slope break in depression stage of Songliao Basin[J].ActaPetrolei Sinica,2007,28(4):31-35.
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