乾西北地区高分辨率地震资料解释
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摘要
吉林油田乾西北地区的油气主要富集于三角洲前缘相带的薄层砂体中,圈闭类型主要为岩性圈闭、岩性—构造复合型圈闭。在高分辨率三维地震资料采集、处理的基础上,通过综合应用优势频带相干体、倾角与断棱综合检测、沉积微相分析、地震反演等技术,获得了以下主要成果认识了目标区断裂的空间展布规律,共解释断层135条(二维资料仅解释断层29条);建立了沉积相与测井响应之间的对应关系,分别给出了水下分流河道、河口坝、远砂坝及席状砂等沉积微相在自然电位及电阻率测井曲线上的特征;落实了储层与油气分布范围。通过钻探取得了较好的效果,对吉林探区提高勘探效益发挥了很好的作用。
The oil/gas in Qian northwest area of Jilin Province is mainly concentrated on thin sand body with delta front facies.The trap types are mainly lithologic trap and lithologic structural composite trap.On a basis of 3 D high resolution seismic data acquisition and processing and through integrative use of coherent volume with optimum frequency band,integrative detection of dips and fault edges,analysis of sedimentary microfacies and seismic inversion etc.,the paper gained the following major results: the rule of spatial distribution of faults is known,total 135 faults are interpreted ( only 29 faults in 2 D data );the corresponding relation between sedimentary facies and logging response is built up,the characters of sedimentary microfacies such as underwater distributary channel,river mouth bar,distant sand bar and sheet sand on natural potential logging and resistivity logging are given separately;the scopes of distribution of reservoirs and oil/gas are defined.The good results are obtained by drilling,played a good role in improvement of exploration effects in Jilin prospecting area.
The oil/gas in Qian northwest area of Jilin Province is mainly concentrated on thin sand body with delta front facies.The trap types are mainly lithologic trap and lithologic structural composite trap.On a basis of 3 D high resolution seismic data acquisition and processing and through integrative use of coherent volume with optimum frequency band,integrative detection of dips and fault edges,analysis of sedimentary microfacies and seismic inversion etc.,the paper gained the following major results: the rule of spatial distribution of faults is known,total 135 faults are interpreted ( only 29 faults in 2 D data );the corresponding relation between sedimentary facies and logging response is built up,the characters of sedimentary microfacies such as underwater distributary channel,river mouth bar,distant sand bar and sheet sand on natural potential logging and resistivity logging are given separately;the scopes of distribution of reservoirs and oil/gas are defined.The good results are obtained by drilling,played a good role in improvement of exploration effects in Jilin prospecting area.
引文
[1]BahorichM andFarmerS.3-D seismic discontinuityfor faults and stratigraphic features:the coherencecube.TheL eadingEdge,1995,14(10)
[2]吴清龙,张延庆等.高分辨率解释技术在英台地区的应用.石油物探,2002,41(增刊)
[3]朱广生.地震资料储层预测方法.北京:石油工业出版社,1995
[2]吴清龙,张延庆等.高分辨率解释技术在英台地区的应用.石油物探,2002,41(增刊)
[3]朱广生.地震资料储层预测方法.北京:石油工业出版社,1995