斜坡区岩性地层圈闭识别技术与应用——以歧口凹陷滨海地区东部为例
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摘要
为了揭示歧口凹陷古近系岩性地层油气藏分布规律并指导钻探,应用层序地层学理论,结合三维地震、测井和岩心资料对岐口凹陷滨海地区古近系开展了层序地层分析。古近系作为一个超层序组发育3个超层序、11个三级层序。根据同沉积构造坡折类型,可以把层序划分为挠曲坡折型层序和断坡型层序2种层序类型。其中:断坡型层序主要发育在超层序1,挠曲坡折型层序主要发育在超层序2和超层序3。在滨海斜坡区,超层序2和超层序3由挠曲坡折控制的层序低位体系域和高位体系域砂体与湖扩展体系域优质烃源岩配置良好、埋深适中、成藏条件优越,是地层岩性油气藏发育有利区。提出了模型正演和有效数计算相结合的地震属性优选方法及地震属性控制下的储层预测技术,并利用该项技术在有利区内预测了6个有利目标。
In order to reveal and display the distribution law of the Paleogene stratigraphic-lithological reservoir of Qikou sag and provide guidance toward the drilling,this paper has utilized the sequence stratigraphy theory with the integration of 3D seismic data,well log data as well as core data to set the work of sequence stratigraphy analysis of it into motion.Paleogene,as a super sequence series,has developed three super sequences and 11 three-order sequences.According to the pattern of sedimentary structure slope break,the sequence can be divided into deflection break sequence and fault ramp sequence.The fault ramp sequence primarily develops in the super sequence 1,and the deflection break sequence mainly develops in the super sequence 2 and super sequence 3.In the Binhai slope area,the lowstand system tract sandstone of super sequence 2 and highstand system tract sandstone of super sequence 3,which are controlled by the deflection break and in well correlation to the high-quality source rocks of lake expansion system tract.The burial depth is fairly appropriate and reservoir formation conditions are superior,the area of which are favorable zones where stratigraphic-lithological reservoir highly develops.Furthermore,this paper has proposed the seismic attribute optimizing method involving the integration of forward modeling and the reservoir prediction under the control of seismic attribute.The application of these methods has successfully predicted six favorable targets in the target area,and the feasibility of which has been proved by the drilling results.
In order to reveal and display the distribution law of the Paleogene stratigraphic-lithological reservoir of Qikou sag and provide guidance toward the drilling,this paper has utilized the sequence stratigraphy theory with the integration of 3D seismic data,well log data as well as core data to set the work of sequence stratigraphy analysis of it into motion.Paleogene,as a super sequence series,has developed three super sequences and 11 three-order sequences.According to the pattern of sedimentary structure slope break,the sequence can be divided into deflection break sequence and fault ramp sequence.The fault ramp sequence primarily develops in the super sequence 1,and the deflection break sequence mainly develops in the super sequence 2 and super sequence 3.In the Binhai slope area,the lowstand system tract sandstone of super sequence 2 and highstand system tract sandstone of super sequence 3,which are controlled by the deflection break and in well correlation to the high-quality source rocks of lake expansion system tract.The burial depth is fairly appropriate and reservoir formation conditions are superior,the area of which are favorable zones where stratigraphic-lithological reservoir highly develops.Furthermore,this paper has proposed the seismic attribute optimizing method involving the integration of forward modeling and the reservoir prediction under the control of seismic attribute.The application of these methods has successfully predicted six favorable targets in the target area,and the feasibility of which has been proved by the drilling results.
引文
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[9]杨勤勇,韩立国,曹辉,等.井间资料约束下地震波阻抗反演方法研究[J].吉林大学学报:地球科学版,2006,36(3):468-473.YANG Qin-yong,HAN Li-guo,CAO Hui,et al.Cross-well seismic constrained acoustic impedanceinversion[J].Journal of Jilin University:EarthScience Edition,2006,36(3):468-473.
[10]苏明军,王西文,刘彩燕,等.储层精细预测技术在周青庄油田的应用[J].石油学报,2007,28(6):92-96.SU Ming-jun,WANG Xi-wen,LIU Cai-yan,et al.Application of precise forecast technique of reservoirsin Zhouqingzhuang oil field[J].Acta Petrolei Sinica,2007,28(6):92-96.
[11]Philip S,Schultz,Shuki Ronen,et al.Seismic-guided estimation of log properties,Part 1:a data-driven interpretation methodology[J].The LeadingEdge,1995,13(5):305-310.
①周立宏.歧口凹陷综合地质研究成果与认识.大港:中国石油大港油田分公司,2009.
[2]郭巍,刘招君,董清水,等.断陷湖盆层序地层格架中的油气聚集规律——以松辽盆地为例[J].吉林大学学报:地球科学版,2002,32(3):233-237.GUO Wei,LIU Zhao-jun,DONG Qing-shui,et al.Oil and gas gathering rule in the sequence stritagraphicframe of fault depression lacustrine basin:an examplefrom Songliao basin[J].Journal of Jilin University:Earth Science Edition,2002,32(3):233-237.
[3]王蛟,姜在兴,陈世悦.渤海湾盆地车镇凹陷古近系层序地层与隐蔽油气藏[J].吉林大学学报:地球科学版,2005,35(2):163-169.WANG Jiao,JIANG Zai-xing,CHEN Shi-yue.Sequence stratigraphy and subtle hydrocarbon reservoirof Paleogene in Chezhen sag,Bohai Bay basin[J].Journal of Jilin University:Earth Science Edition,2005,35(2):163-169.
[4]庞智英,舒萍,纪学雁,等.松辽盆地东南隆起区白垩系营城组二段沉积相分析及层序划分[J].吉林大学学报:地球科学版,2009,39(2):232-237.PANG Zhi-ying,SHU Ping,JI Xue-yan,et al.Sedimentary facies analysis and stratigraphic sequencedivision of the second member of the YingchengFormation in the southeastern uplift region,Songliaobasin[J].Journal of Jilin University:Earth ScienceEdition,2009,39(2):232-237.
[5]张世广,柳成志,卢双舫,等.高分辨率层序地层学在河、湖、三角洲复合沉积体系的应用——以朝阳沟油田扶余油层开发区块为例[J].吉林大学学报:地球科学版,2009,39(3):361-368.ZHANG Shi-guang,LIU Cheng-zhi,LU Shuang-fang,et al.The application of high resolution sequencestratigraphy in multiplex deposition system of theriver,lake and delta:to take the development block ofFuyu oil layer in Chaoyanggou reservoir for example[J].Journal of Jilin University:Earth ScienceEdition,2009,39(3):361-368.
[6]大港油田石油地质志编辑委员会.中国石油地质志:卷四.大港油田[M].北京:石油工业出版社,1991.Petroleum Geology of Dagang Oilfield Editorial Board.Petroleum geology of China:VolumeⅣ.Dagangoilfield[M].Beijing:Petroleum Industry Press,1991.
[7]王西文.相对波阻抗约束下的多井测井参数反演方法和应用[J].石油地球物理勘探,2004,39(3):291-299.WANG Xi-wen.Inversion of multi-logging parametersunder constrain of relative wave impedance data volumeand application[J].Oil Geophysical Prospecting,2004,39(3):291-299.
[8]王西文,刘全新,周嘉玺,等.精细储层预测技术在板南5-3井区的应用[J].石油物探,2003,42(3):390-394.WANG Xi-wen,LIU Quan-xin,ZHOU Jia-xi,et al.Application of fine reservoir prediction techniques inBannan 5-3 oilfield[J].Geophycical Prospecting forPetroleum,2003,42(3):390-394.
[9]杨勤勇,韩立国,曹辉,等.井间资料约束下地震波阻抗反演方法研究[J].吉林大学学报:地球科学版,2006,36(3):468-473.YANG Qin-yong,HAN Li-guo,CAO Hui,et al.Cross-well seismic constrained acoustic impedanceinversion[J].Journal of Jilin University:EarthScience Edition,2006,36(3):468-473.
[10]苏明军,王西文,刘彩燕,等.储层精细预测技术在周青庄油田的应用[J].石油学报,2007,28(6):92-96.SU Ming-jun,WANG Xi-wen,LIU Cai-yan,et al.Application of precise forecast technique of reservoirsin Zhouqingzhuang oil field[J].Acta Petrolei Sinica,2007,28(6):92-96.
[11]Philip S,Schultz,Shuki Ronen,et al.Seismic-guided estimation of log properties,Part 1:a data-driven interpretation methodology[J].The LeadingEdge,1995,13(5):305-310.
①周立宏.歧口凹陷综合地质研究成果与认识.大港:中国石油大港油田分公司,2009.
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