济阳坳陷红柳地区构造坡折带层序地层学模式与含油气性的关系
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摘要
在对地震、测井和钻井等资料详细分析的基础上,将济阳坳陷红柳地区在下第三系划分出了7个三级层序,19个体系域.其中层序Ⅰ、层序Ⅳ为两个T-R层序分为两个体系域,即湖扩展和高位体系域,其他层序均为三分层序,划分为三个体系域即低位、湖扩展(水进)和高位体系域.在层序地层单元划分和对比的基础上,结合断层上下盘地层厚度的差异和地层厚度的变化反映古地形,认为济阳坳陷红柳地区在下第三系沉积时期,发育两种不同类型的构造坡折带,并建立了该区的构造坡折带层序地层学模式,研究了构造坡折带层序地层学模式与含油气性的关系,认为第Ⅰ、Ⅱ层序间的界面附近可形成有利的地层不整合覆盖圈闭与构造-岩性圈闭;第Ⅳ层序低位域可作为油气的运载层,在合适构造的匹配下,可形成有利的构造圈闭或构造-岩性圈闭,对有利区带做出了预测.
On the basis of analysis of the data of seismic,well-log,7 sequence,19 system tracts were identified lower Tertiary in Hongliu area of Jiyang depression.Sequence 1 and sequence 6 are T-R sequence,which are composed of two system tracts,that is transgresive system tract and highstand system tract.The other sequences can be divided into 3 system tracts,that is lowstand system tract,transgresive system tract and highstand system tract.On the basis of the identification and correlation of stratigraphic unite,and paleotopograghy refleted by the study of variation of the thickness of strata,it is thought that in the west part of Hongliu area of Jiyang depression,two different kind of slope belt were developed in the period of sedimentation of lower tertiary.sequence stratigraphy models of steep slope belt were built up.The relationship between the slope sequence stratigraphy models and the oil and gas was studied.It is considered that near the boundary of sequenceⅠand sequenceⅡ there are unconformity oil trap and structure-lithic trap,lowstand system tract of sequence Ⅳ can act as oil transgression zone,in suitable condition structure trap and and structure-lithic trap can be formed.and the profitable area was predicted.
On the basis of analysis of the data of seismic,well-log,7 sequence,19 system tracts were identified lower Tertiary in Hongliu area of Jiyang depression.Sequence 1 and sequence 6 are T-R sequence,which are composed of two system tracts,that is transgresive system tract and highstand system tract.The other sequences can be divided into 3 system tracts,that is lowstand system tract,transgresive system tract and highstand system tract.On the basis of the identification and correlation of stratigraphic unite,and paleotopograghy refleted by the study of variation of the thickness of strata,it is thought that in the west part of Hongliu area of Jiyang depression,two different kind of slope belt were developed in the period of sedimentation of lower tertiary.sequence stratigraphy models of steep slope belt were built up.The relationship between the slope sequence stratigraphy models and the oil and gas was studied.It is considered that near the boundary of sequenceⅠand sequenceⅡ there are unconformity oil trap and structure-lithic trap,lowstand system tract of sequence Ⅳ can act as oil transgression zone,in suitable condition structure trap and and structure-lithic trap can be formed.and the profitable area was predicted.
引文
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[3]陆克政,启家福,戴俊生.渤海湾新生代含油气盆地构造模式[M].北京:石油工业出版社,1997:72-93Lu Kezheng,Q i Jiafu,Dai Junsheng.Structure models in cenozoic of Bohai bay basin[M].Beijing:Petroleum IndustryPress,1997:72-93
[4]纪友亮张士奇.陆相断陷湖盆层序地层学[M].北京:石油工业出版社,1996:1-123Ji You liang,Zhang Sh iq i.The sequence stratigraphy of terrestrial rift lacustrine basin[M].Beijing:Petroleum IndustryPress,1996:1-123
[5]纪友亮张士奇.层序地层学原理及层序成因机制模式[M].北京:地质出版社,1998:74-96Ji You liang,Zhang Sh iq i.The principle of sequence stratigraphy and its origine models[M].Beijing:Geological Press,1998:74-96
[6]姜在兴,李华启.层序地层学原理及应用[M].北京:石油工业出版社,1996:64-81Jiang Zaixing,L i Huaq i.The principle of sequence stratigraphy and its application[M].Beijing:Petroleum IndustryPress,1996:64-81
[7]张善文.沾化凹陷浅层勘探的思考[J].复式油气田,1999,5(3):6-7Zhang Shanwen.Th ink ing of exploration in shallow berried strata in Zhanhua sag[J].Complex O il and Gas F ield,1993,5(3):6-7
[8]张世奇,纪友亮.陆相断陷湖盆层序地层学模式探讨[J].石油勘探与开发,1996,23(5):23-28Zhang Sh iq i,Ji You liang.The study of the models of sequence stratigraphy of terrestrial rift lacustrine basin[J].Petroleum Exploration and D evelopm ent,1996,23(5):23-28
[9]方石.河流相层序地层学研究[J].世界地质,2000,19(2):5-11Fang Sh i.Sequence stratigraphy study in fluvial environm ent[J].W orld Geology,2000,19(2):5-11
[10]赵澄林,吴崇筠.油区岩相古地理[M].北京:石油工业出版社,1989:1-13Zhao Chenglin,W u Chongyun.The sed im etary facies and palaeogeography in the area of oilfield[M].Beijing:Petroleum Industry Press,1989:1-13
[11]Shan lley K W,M eCabe P J.Respectives on the sequence stratigraphy of continental strata[J].AAPG Bu lletin,1994,79(2):544-568
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