地震沉积学在BZ19-4油田中的应用
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摘要
地震沉积学主要利用三维地震资料和现代地球物理技术,结合钻井资料进行沉积体系、沉积相平面展布以及沉积演化研究。海上油田钻井资料少,一般利用地震沉积学方法进行沉积相方面的研究。文中在渤海南部海域BZ19-4油田新近系明化镇组下段进行了地震沉积学应用研究,即利用井震结合进行层序划分及地层对比,根据对比结果的小层厚度发育情况选择合理的切片时窗,使用90°相位移资料进行地层切片,研究系列地层切片,同时结合钻井信息进行地质解释。研究结果表明,研究区发育浅水三角洲沉积砂体,纵向上经历了Ⅲ,Ⅳ油组窄河道型砂体到Ⅰ,Ⅱ油组朵叶状三角洲砂体的沉积演化。油田开发过程中,针对不同油组砂体发育特征,可采取不同的开发策略。
Seismic sedimentology can be used to study sedimentary system,plane distribution of sedimentary facies and sedimentary evolution through the use of 3D seismic data and modern geophysical technology(90° phase control and strata slice),combined with drilling data.Because the drilling date lack for offshore oilfield,seismic sedimentology method can be used to study sedimentary systems.In BZ19-4 Oilfield which is located in the southern part of Bohai Sea,we use the method to conduct the application study of seismic sedimentology in Lower Minghuazhan Formation.That is the sequence division and strata correlation can be conducted by the well-seismic combination.According to the layer thicknes,we select the reasonable slice window and make the slice through the use 90° phase shift seismic data.Then,strata slice is studied,and geological interpretation is completed through the combination of drilling data at the same time.Study results show that the shallow water delta sedimentary sandbodies developed in the study area and they underwent the sedimentary evolution from narrow channel sandbody in oil measures Ⅲ and Ⅳ to lobation delta sandbody in oil measures Ⅰ and Ⅱ.Different development strategies can be adopted aiming at the sandbody development feature of different oil measures during oilfield development.
Seismic sedimentology can be used to study sedimentary system,plane distribution of sedimentary facies and sedimentary evolution through the use of 3D seismic data and modern geophysical technology(90° phase control and strata slice),combined with drilling data.Because the drilling date lack for offshore oilfield,seismic sedimentology method can be used to study sedimentary systems.In BZ19-4 Oilfield which is located in the southern part of Bohai Sea,we use the method to conduct the application study of seismic sedimentology in Lower Minghuazhan Formation.That is the sequence division and strata correlation can be conducted by the well-seismic combination.According to the layer thicknes,we select the reasonable slice window and make the slice through the use 90° phase shift seismic data.Then,strata slice is studied,and geological interpretation is completed through the combination of drilling data at the same time.Study results show that the shallow water delta sedimentary sandbodies developed in the study area and they underwent the sedimentary evolution from narrow channel sandbody in oil measures Ⅲ and Ⅳ to lobation delta sandbody in oil measures Ⅰ and Ⅱ.Different development strategies can be adopted aiming at the sandbody development feature of different oil measures during oilfield development.
引文
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[18]胡玉杰,高协为,黄红兵.东濮凹陷西洼北部沉积体系与含油气性[J].断块油气田,2001,8(1):7-9.
[19]王海峰,史洁,侯战胜,等.盘河断块区馆三段河流相储集层特征及储集性能[J].断块油气田,2005,12(1):21-23.
[20]刘永春,李晓平,王波,等.卫81块沙四段储层沉积微相及剩余油分布研究[J].断块油气田,2001,8(5):42-46.
[21]姚健,杜晓峰,郑敬贵,等.辽东湾地区浊积扇体识别及储层地震描述方法研究[J].断块油气田,2012,19(6):718-721.
[2]Zeng H,Hentz T F.High-frequency sequence stratigraphy from seismicsedimentology:Applied to Miocene,Vermilion Block 50,Tiger ShoalArea,Offshore Louisina[J].AAPG Bulletin,2004,88(2):153-174.
[3]Zellg D,Dentz T F.地震岩性学在弗米里恩50区块中新统高频层序地层研究中的应用[C].黄忠范,译.李明杰,校//夏义平,袁秉衡,徐礼贵,等.石油地质与地球物理译文集.北京:石油工业出版社,2004:222-240.
[4]Zeng Hongliu,Backus Milo M.Interpretive advantages of 90°-phasewavelets:Part 1—Modeling[J].Geophysics,2005,70(3):7-15.
[5]Zeng Hongliu,Backus Milo M.Interpretive advantages of 90°-phasewavelets:Part 2—Seismic applications[J].Geophysics,2005,70(3):17-24.
[6]张树林,何家雄.中国近海油气地震技术现状及展望[J].断块油气田,2006,13(4):1-4.
[7]董春梅,张宪国,林承焰.地震沉积学的概念、方法和技术[J].沉积学报,2006,24(5):698-704.
[8]林承焰,张宪国,董春梅.地震沉积学及其初步应用[J].石油学报,2007,28(2):68-72.
[9]张义娜,朱筱敏,刘长利.地震沉积学及其在中亚南部地区的应用[J].石油勘探与开发,2009,36(1):74-79.
[10]李阳.胜利油田油藏综合地球物理研究现状及展望[J].石油勘探与开发,2004,31(3):102-103.
[11]余宏忠,李建平,彭文绪,等.黄河口凹陷明下段浅水三角洲沉积及勘探意义[J].大庆石油地质与开发,2009,28(2):1-6.
[12]赖维成,程建春,周心怀,等.湖盆萎缩期准平原层序划分与砂体特征研究:以黄河口地区新近系明下段为例[J].中国海上油气,2009,21(3):157-161.
[13]刘忠宝,杨圣彬,焦存礼,等.塔里木盆地巴楚隆起中、下寒武统高精度层序地层与沉积特征[J].石油与天然气地质,2012,33(1):70-76.
[14]李向阳,张昌民,张尚锋,等.白云凹陷北坡珠江组下段层序地层及有利区带预测[J].断块油气田,2012,19(2):154-157.
[15]潘春孚,纪友亮,高志勇,等.准噶尔盆地南缘新近系层序类型与发育模式研究[J].断块油气田,2011,18(1):34-37.
[16]胡勇,徐聘,廖新武,等.层序地层研究拓展油田发现的一个成功实例:以渤海湾盆地新近系渤中19-4油田为例[C]//陈壁.渤海油田上产3000万吨论文集.北京:中国石化出版社,2011:265-270.
[17]于国庆,李大伟.储层特征变化规律研究:红柳油田垦东6断块沙二—沙三中[J].断块油气田,2004,11(2):16-18.
[18]胡玉杰,高协为,黄红兵.东濮凹陷西洼北部沉积体系与含油气性[J].断块油气田,2001,8(1):7-9.
[19]王海峰,史洁,侯战胜,等.盘河断块区馆三段河流相储集层特征及储集性能[J].断块油气田,2005,12(1):21-23.
[20]刘永春,李晓平,王波,等.卫81块沙四段储层沉积微相及剩余油分布研究[J].断块油气田,2001,8(5):42-46.
[21]姚健,杜晓峰,郑敬贵,等.辽东湾地区浊积扇体识别及储层地震描述方法研究[J].断块油气田,2012,19(6):718-721.
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