南堡凹陷东营组层序地层格架及沉积相预测
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摘要
黄骅坳陷南堡凹陷属走滑伸展型断陷,古近系东营组主要发育冲积扇—扇三角洲—湖相沉积体系。为了查明南堡凹陷油气分布规律及勘探前景,利用高分辨率层序地层学方法,结合岩心、测井和地震资料分析,识别南堡凹陷东营组各级层序界面和相序,建立等时地层层序格架和演化模式,综合预测层序地层格架下的沉积相和油气分布。研究认为:层序界面、最大湖泛面、层序格架下的沉积相分布和构造背景是有利砂体分布和油气富集的主控因素,东营组油气分布具有纵向相对集中和平面分带的特点,表现为油气主要富集于最大湖泛面之下的东三上亚段地层中,且多分布于凹陷第二走滑断阶带。图7参16
The Nanpu Sag is a downfaulted lacustrine basin with strike-slip faulting.The Palaeogene Dongying Formation is dominated by the depositional system of alluvial fan facies,fan delta facies(braided delta facies) and lacustrine facies.With the high resolution sequence stratigraphy and the correlation analysis of cores,logs and seismic data,different orders of sequence boundaries and facies sequence are identified and the isochronous stratigraphic framework and the depositional evolutional model of Dongying Formation are built and used to predict the distribution of reservoirs.The study shows that stratigraphic sequence boundary,maximum flood surface,sedimentary facies and structural settings are the dominant factors controlling the distribution of favorable sand bodies and oil reservoirs in the Dongying Formation.The distribution of oil reservoirs is dominated by such characteristics as relatively vertical concentration and area zonation.A lot of hydrocarbon reservoirs are concentrated in Ed_1 that underlies the maximum flood surface vertically.Those discovered reservoirs are typically distributed in the second strike-slip fault zone in Nanpu Sag.
The Nanpu Sag is a downfaulted lacustrine basin with strike-slip faulting.The Palaeogene Dongying Formation is dominated by the depositional system of alluvial fan facies,fan delta facies(braided delta facies) and lacustrine facies.With the high resolution sequence stratigraphy and the correlation analysis of cores,logs and seismic data,different orders of sequence boundaries and facies sequence are identified and the isochronous stratigraphic framework and the depositional evolutional model of Dongying Formation are built and used to predict the distribution of reservoirs.The study shows that stratigraphic sequence boundary,maximum flood surface,sedimentary facies and structural settings are the dominant factors controlling the distribution of favorable sand bodies and oil reservoirs in the Dongying Formation.The distribution of oil reservoirs is dominated by such characteristics as relatively vertical concentration and area zonation.A lot of hydrocarbon reservoirs are concentrated in Ed_1 that underlies the maximum flood surface vertically.Those discovered reservoirs are typically distributed in the second strike-slip fault zone in Nanpu Sag.
引文
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[13]张振英,邵龙义,柳广第,等.南堡凹陷无井探区烃源岩评价研究[J].石油勘探与开发,2004,31(4):64-67.(ZHANG Zhen-ying,SHAO Long-yi,LIU Guang-di,et al.Evaluation of source rocksat no exploratory well area of Nanpu Sag,Bohai Bay Basin[J].Petroleum Exploration and Development,2004,31(4):64-67.)
[14]李会军,吴泰然,马宗晋,等.黄骅坳陷古近系深层烃源岩成烃演化特征[J].石油勘探与开发,2004,31(6):40-43.(LI Hui-jun,WU Tai-ran,MA Zong-jin,et al.Hydrocarbon generation fromPaleogene deep source rocks in Huanghua Depression[J].Petroleum Exploration and Development,2004,31(6):40-43.)
[15]范哲清,梁慧兰,赵春段.黄骅坳陷大港滩海区复杂三维地震资料解释方法[J].石油勘探与开发,2004,31(6):62-65.(FAN Zhe-qing,LIANG Hui-lan,ZHAO Chun-duan.Intricate 3-D seismicinterpretation in shallow water area of Huanghua Sag,Dagangtransition zone[J].Petroleum Exploration and Development,2004,31(6):62-65.)
[16]杨池银.黄骅坳陷非油型天然气成因与聚集条件[J].石油勘探与开发,2005,32(4):114-117.(YANG Chi-yin.Genesis andaccumulation of non-oil-type natural gases in HuanghuaDepression,Dagang Oilfield[J].Petroleum Exploration andDevelopment,2005,32(4):114-117.)
[2]邓宏文,王洪亮.层序地层基准面的识别、对比技术及应用[J].石油与天然气地质,1996,17(3):177-184.(DENG Hong-wen,WANG Hong-liang.Identification and correlation techniques ofsequence stratigraphic base-levels and their application[J].Oil&Gas Geology,1996,17(3):177-184.)
[3]邓宏文,王洪亮.高分辨率层序地层对比在河流相中的应用[J].石油与天然气地质,1997,18(2):90-95.(DENG Hong-wen,WANG Hong-liang.Application of high-resolution sequencestratigraphic correlation to fluvial facies[J].Oil&Gas Geology,1997,18(2):90-95.)
[4]Cross T A.Stratigraphic controls on reservoir attributes incontinental strata[J].Earth Science Frontiers,2000,7(4):322-350.
[5]裘亦楠.中国陆相油气储集层[M].北京:石油工业出版社,1998.(QIU Yi-nan.The non-marine hydrocarbon reservoir inChina[M].Beijing:Petroleum Industry Press,1998.)
[6]贾承造,刘德来,赵文智,等.层序地层学研究新进展[J].石油勘探与开发,2002,29(5):1-4.(JIA Cheng-zao,LIU De-lai,ZHAOWen-zhi,et al.Some new achievements in sequence stratigraphyresearch[J].Petroleum Exploration and Development,2002,29(5):1-4.)
[7]姜在兴,王卫红,余宏忠.渤南油田义3-7-7井高精度层序地层格架分析[J].石油勘探与开发,2003,30(3):26-28.(JIANG Zai-xing,WANG Wei-hong,YU Hong-zhong.Framework of high-resolution sequence stratigraphy for Well Yi 3-7-7 in Bonan OilField[J].Petroleum Exploration and Development,2003,30(3):26-28.)
[8]任德生,刘立,陈江,等.辽河坳陷西部凹陷曙北地区古近系层序地层格架[J].石油勘探与开发,2004,31(1):48-50.(REN De-sheng,LIU Li,CHEN Jiang,et al.Paleogene stratigraphicframes in the Shubei Area,Liaohe Depression[J].PetroleumExploration and Development,2004,31(1):48-50.)
[9]武法东,陈永进,黄高健,等.渤南油田五区、六区层序地层格架与沉积类型[J].石油勘探与开发,2004,31(5):30-33.(WU Fa-dong,CHEN Yong-jin,HUANG Gao-jian,et al.Sequencestratigraphic framework and sedimentary types in the Block 5 and6,Bonan Oilfield[J].Petroleum Exploration and Development,2004,31(5):30-33.)
[10]张本琪,姜在兴,夏斌,等.层序地层学在埕东—飞雁滩油田馆陶组上段岩性油气藏勘探中的应用[J].石油勘探与开发,2004,31(5):50-52.(ZHANG Ben-qi,JIANG Zai-xing,XIA Bin,et al.Application of sequence stratigraphy in lithological reservoirexploration of the Upper Guantao Formation,Chendong-Feiyantan Oilfield[J].Petroleum Exploration and Development,2004,31(5):50-52.)
[11]顾家裕,郭彬程,张兴阳.中国陆相盆地层序地层格架及模式[J].石油勘探与开发,2005,32(5):11-15.(GU Jia-yu,GUO Bin-cheng,ZHANG Xing-yang.Sequence stratigraphic frameworkand model of the continental basins in China[J].PetroleumExploration and Development,2005,32(5):11-15.)
[12]汲生珍,刘震.波阻抗反演技术在层序地层与沉积分析中的应用[J].石油勘探与开发,2005,32(6):66-68.(JI Sheng-zhen,LIUZhen.Application of wave impedance inversion in sequencestratigraphy and sedimentary analyses[J].Petroleum Explorationand Development,2005,32(6):66-68.)
[13]张振英,邵龙义,柳广第,等.南堡凹陷无井探区烃源岩评价研究[J].石油勘探与开发,2004,31(4):64-67.(ZHANG Zhen-ying,SHAO Long-yi,LIU Guang-di,et al.Evaluation of source rocksat no exploratory well area of Nanpu Sag,Bohai Bay Basin[J].Petroleum Exploration and Development,2004,31(4):64-67.)
[14]李会军,吴泰然,马宗晋,等.黄骅坳陷古近系深层烃源岩成烃演化特征[J].石油勘探与开发,2004,31(6):40-43.(LI Hui-jun,WU Tai-ran,MA Zong-jin,et al.Hydrocarbon generation fromPaleogene deep source rocks in Huanghua Depression[J].Petroleum Exploration and Development,2004,31(6):40-43.)
[15]范哲清,梁慧兰,赵春段.黄骅坳陷大港滩海区复杂三维地震资料解释方法[J].石油勘探与开发,2004,31(6):62-65.(FAN Zhe-qing,LIANG Hui-lan,ZHAO Chun-duan.Intricate 3-D seismicinterpretation in shallow water area of Huanghua Sag,Dagangtransition zone[J].Petroleum Exploration and Development,2004,31(6):62-65.)
[16]杨池银.黄骅坳陷非油型天然气成因与聚集条件[J].石油勘探与开发,2005,32(4):114-117.(YANG Chi-yin.Genesis andaccumulation of non-oil-type natural gases in HuanghuaDepression,Dagang Oilfield[J].Petroleum Exploration andDevelopment,2005,32(4):114-117.)
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