伊通盆地梁家地区奢岭组混源扇三角洲内幕结构
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摘要
伊通盆地梁家地区(二号断层上盘)钻井揭示奢岭组是该区主要的油气富集层,目前研究结果认为奢岭组储集层是由两个方向的扇三角洲混合沉积形成,但由于资料有限,应用常规方法无法清楚地认识两个不同方向的物源混合沉积的扇三角洲的内幕特征以及这两个物源如何动态地控制着砂体的分布,影响了对该区油气储集层的深入认识.应用地震和地质资料,在波阻抗反演结果二次解释的基础,解析了这两个混合物源扇三角洲的内幕特征和演化特征,得出3个结论:(1)伊通盆地梁家地区奢岭组至少有4期扇三角洲沉积,每期扇三角洲的沉积范围由下向上逐渐扩大,反映了基准面逐渐下降的过程;(2)奢岭组的4期扇三角洲是由两个物源混合沉积形成,这4期扇三角洲逐渐由受从二号断层来的物源控制为主,变为由受从北东方向来的物源控制为主;(3)基于波阻抗体进行的砂层组解释和分析,能够清楚地分析扇三角洲沉积体的内幕结构,是应用波阻抗进行高分辨率地震分析和应用的一种新的分析方法.
Founding lithologic reservoir is of greater potential as the exploration changing from the structural reservoir into the lithologic reservoir,while the reservoir analysis is the focus of the lithologic reservoir exploration.In the Liangjia area,Yitong basin,drilling shows that most of oil & gas reservoirs lie in the Sheling Formation,which belong to the fan delta facies deposited jointly by two provenances.A new method is needed to analyze this fan delta detail and its control on the reservoir because of the big space of wells in the study area.In this paper,a new analysis method and idea on the fan delta deposited jointly is presented on the basis of the interpretation of the sandstone in the impedance cube and the shape of the different layers of sandstone created on the map,then the details of fan delta are analyzed.Three major findings are as follows:(1)Fan deltas of four periods are identified in the Sheling Formation,expanding gradually in the area;(2)The fan deltas were deposited jointly by the two provenances,which controlled different layers of sandstone;(3)The application of impedance cube offers a new approach to interpret,analyze the different layers of sandstone,and to identify the fan delta facies.
Founding lithologic reservoir is of greater potential as the exploration changing from the structural reservoir into the lithologic reservoir,while the reservoir analysis is the focus of the lithologic reservoir exploration.In the Liangjia area,Yitong basin,drilling shows that most of oil & gas reservoirs lie in the Sheling Formation,which belong to the fan delta facies deposited jointly by two provenances.A new method is needed to analyze this fan delta detail and its control on the reservoir because of the big space of wells in the study area.In this paper,a new analysis method and idea on the fan delta deposited jointly is presented on the basis of the interpretation of the sandstone in the impedance cube and the shape of the different layers of sandstone created on the map,then the details of fan delta are analyzed.Three major findings are as follows:(1)Fan deltas of four periods are identified in the Sheling Formation,expanding gradually in the area;(2)The fan deltas were deposited jointly by the two provenances,which controlled different layers of sandstone;(3)The application of impedance cube offers a new approach to interpret,analyze the different layers of sandstone,and to identify the fan delta facies.
引文
Chen,C.,Sun,Y.M.,Jia,A.L.,2006.Development and ap-plication of geological knowledge database for fan-deltafront in the dense spacing area.Acta Petrolei Sinica,27(2):53-57(in Chinese with English abstract).
Duan,Y.Q.,Wang,Y.C.,Qin,T.,et al.,2007.Applicationof reservoir seismic inversion at Damintun sagin Liaoheoilfield.Earth Science—Journal of China Universityof Geosciences,32(4):554-558(in Chinese with Eng-lish abstract).
Jia,A.L.,Chen,L.,Mu,L.X.,et al.,2000a.A study onsedimentary simulation of fan-delta outcrop.Acta Pe-trolei Sinica,21(6):107-110(in Chinese with Englishabstract).
Jia,A.L.,Mu,L.X.,Chen,L.,et al.,2000b.Approach fordetailed study of reservoir outcrop.Acta Petrolei Sini-ca,21(4):105-108(in Chinese with English ab-stract).
Liu,Z.J.,2003.Lacus subaqueous fan sedimentary character-istics and influence factors—Acase study of ShuangyangFormationin Moliqingfault subsidence of Yitong basin.Acta Sedimentologica Sinica,21(1):148-154(in Chi-nese with English abstract).
Lu,Y.C.,Ren,J.Y.,Li,S.T.,et al.,1999.Depositional se-quences of Yitong graben(eastern China)and its re-sponse to transform-extensional processes.PetroleumGeology&Experimental,21(3):232-236(in Chinesewith English abstract).
Sun,L.P.,Liu,Z.J.,Mao,T.J.,et al.,2005.Sedimentaryfeatures of submarine fan in Shuangyang Formation,Moliqing faulted depression,Yitong basin.Global Geol-ogy,24(2):137-143(in Chinese with English ab-stract).
Wang,S.H.,Jiao,Y.Q.,Wu,L.Q.,et al.,2007.Spatialcombination of paleoprovenance and depositional lobe ofmid-lower Yanchang Formationin the northwest of Or-dos basin.Earth Science—Journal of China Universityof Geosciences,32(2):201-208(in Chinese with Eng-lish abstract).
Zhang,C.S.,Liu,Z.B.,Shi,D.,et al.,2000.Formed pro-ceeding and evolution disciplinarian of fan delta.ActaSedimentologica Sinica,18(4):521-526(in Chinesewith English abstract).
Zhang,C.S.,Liu,Z.B.,Shi,D.,et al,2003.Experimentalstudy of sandy-fan-delta sedimentary process.Journalof Jianghan PetroleumInstitute,25(2):1-3(in Chi-nese with English abstract).
Zhao,J.Q.,Ji,Y.L.,Xia,B.,et al.,2004.High-resolutionsequence researchin fan-delta sedimentary system.ActaSedimentologica Sinica,22(2):302-309(in Chinesewith English abstract).
陈程,孙义梅,贾爱林,2006.扇三角洲前缘地质知识库的建立及应用.石油学报,27(2):53-57.
段云卿,王彦春,覃天,等,2007.储层地震反演在辽河油田大民屯凹陷的应用.地球科学——中国地质大学学报,32(4):554-558.
贾爱林,陈亮,穆龙新,等,2000a.扇三角洲露头区沉积模拟研究.石油学报,21(6):107-110.
贾爱林,穆龙新,陈亮,等,2000b.扇三角洲储层露头精细研究方法.石油学报,21(4):105-108.
刘招君,2003.湖泊水下扇沉积特征及影响因素——以伊通盆地莫里青断陷双阳组为例.沉积学报,21(1):148-154.
陆永潮,任建业,李思田,等,1999.伊通地堑的沉积充填序列及其对转换-伸展过程的响应.石油实验地质,21(3):232-236.
孙连浦,刘招君,毛天基,等,2005.伊通盆地莫里青断陷双阳组湖泊水下扇沉积特征.世界地质,24(2):137-143.
王世虎,焦养泉,吴立群,等,2007.鄂尔多斯盆地西北部延长组中下部古物源与沉积体空间配置.地球科学——中国地质大学学报,32(2):201-208.
张春生,刘忠保,施冬,等,2000.扇三角洲形成过程及演变规律.沉积学报,18(4):521-526.
张春生,刘忠保,施冬,等,2003.砂质扇三角洲沉积过程实验研究.江汉石油学院学报,25(2):1-3.
赵俊青,纪友亮,夏斌,等,2004.扇三角洲沉积体系高精度层序地层学研究.沉积学报,22(2):302-309.
Duan,Y.Q.,Wang,Y.C.,Qin,T.,et al.,2007.Applicationof reservoir seismic inversion at Damintun sagin Liaoheoilfield.Earth Science—Journal of China Universityof Geosciences,32(4):554-558(in Chinese with Eng-lish abstract).
Jia,A.L.,Chen,L.,Mu,L.X.,et al.,2000a.A study onsedimentary simulation of fan-delta outcrop.Acta Pe-trolei Sinica,21(6):107-110(in Chinese with Englishabstract).
Jia,A.L.,Mu,L.X.,Chen,L.,et al.,2000b.Approach fordetailed study of reservoir outcrop.Acta Petrolei Sini-ca,21(4):105-108(in Chinese with English ab-stract).
Liu,Z.J.,2003.Lacus subaqueous fan sedimentary character-istics and influence factors—Acase study of ShuangyangFormationin Moliqingfault subsidence of Yitong basin.Acta Sedimentologica Sinica,21(1):148-154(in Chi-nese with English abstract).
Lu,Y.C.,Ren,J.Y.,Li,S.T.,et al.,1999.Depositional se-quences of Yitong graben(eastern China)and its re-sponse to transform-extensional processes.PetroleumGeology&Experimental,21(3):232-236(in Chinesewith English abstract).
Sun,L.P.,Liu,Z.J.,Mao,T.J.,et al.,2005.Sedimentaryfeatures of submarine fan in Shuangyang Formation,Moliqing faulted depression,Yitong basin.Global Geol-ogy,24(2):137-143(in Chinese with English ab-stract).
Wang,S.H.,Jiao,Y.Q.,Wu,L.Q.,et al.,2007.Spatialcombination of paleoprovenance and depositional lobe ofmid-lower Yanchang Formationin the northwest of Or-dos basin.Earth Science—Journal of China Universityof Geosciences,32(2):201-208(in Chinese with Eng-lish abstract).
Zhang,C.S.,Liu,Z.B.,Shi,D.,et al.,2000.Formed pro-ceeding and evolution disciplinarian of fan delta.ActaSedimentologica Sinica,18(4):521-526(in Chinesewith English abstract).
Zhang,C.S.,Liu,Z.B.,Shi,D.,et al,2003.Experimentalstudy of sandy-fan-delta sedimentary process.Journalof Jianghan PetroleumInstitute,25(2):1-3(in Chi-nese with English abstract).
Zhao,J.Q.,Ji,Y.L.,Xia,B.,et al.,2004.High-resolutionsequence researchin fan-delta sedimentary system.ActaSedimentologica Sinica,22(2):302-309(in Chinesewith English abstract).
陈程,孙义梅,贾爱林,2006.扇三角洲前缘地质知识库的建立及应用.石油学报,27(2):53-57.
段云卿,王彦春,覃天,等,2007.储层地震反演在辽河油田大民屯凹陷的应用.地球科学——中国地质大学学报,32(4):554-558.
贾爱林,陈亮,穆龙新,等,2000a.扇三角洲露头区沉积模拟研究.石油学报,21(6):107-110.
贾爱林,穆龙新,陈亮,等,2000b.扇三角洲储层露头精细研究方法.石油学报,21(4):105-108.
刘招君,2003.湖泊水下扇沉积特征及影响因素——以伊通盆地莫里青断陷双阳组为例.沉积学报,21(1):148-154.
陆永潮,任建业,李思田,等,1999.伊通地堑的沉积充填序列及其对转换-伸展过程的响应.石油实验地质,21(3):232-236.
孙连浦,刘招君,毛天基,等,2005.伊通盆地莫里青断陷双阳组湖泊水下扇沉积特征.世界地质,24(2):137-143.
王世虎,焦养泉,吴立群,等,2007.鄂尔多斯盆地西北部延长组中下部古物源与沉积体空间配置.地球科学——中国地质大学学报,32(2):201-208.
张春生,刘忠保,施冬,等,2000.扇三角洲形成过程及演变规律.沉积学报,18(4):521-526.
张春生,刘忠保,施冬,等,2003.砂质扇三角洲沉积过程实验研究.江汉石油学院学报,25(2):1-3.
赵俊青,纪友亮,夏斌,等,2004.扇三角洲沉积体系高精度层序地层学研究.沉积学报,22(2):302-309.
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