基于沉积模式的地震多属性量化沉积微相解释方法——以松辽盆地北部高台子地区泉头组三-四段为例
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摘要
本文针对松辽盆地北部扶杨油层赋存的泉头组三-四段河道砂体地震识别问题开展了地震地质综合研究。以高分辨率层序地层学原理和沉积岩石学理论为指导,识别了沉积微相和河道砂体沉积特征,用钻井和地震联合分层对比的方法建立层序地层格架和区域沉积微相展布模式,确定了地震剖面上具有可对比追踪性的四级层序界面。通过地震多属性多元回归与聚类分析拟合含砂率,在沉积模式的指导下对含砂率平面图进行沉积微相解释,确定河道砂体的空间展布和有利区,经钻探验证说明取得了较好的预测效果。
An integrated seismic-geologic study was implemented in this paper,focusing on seismic i- dentification of channel sand-bodies in Fu-Yang oil layer hosted in Members 3-4,Quantou For- mation in the northern Songliao Basin.In the light of the high resolution sequence stratigraphy and sedimentary petrography,a sedimentary model for microfacies and channel sand-bodies was set up.Based on a synthetic method of drilling and seismicity,and combined to layered com- parison,the framework of stratigraphyic sequence and the regional distribution modes of micro- facies were established,and the contact boundaries of fourth-order sequence which was correla- tive and traceable in seismic sections were identified.Sand ratio was matched based on multi- ple regression and clustering analysis on multiple seismic attribute.Micro-facies was interpre- ted from the plan diagram of sand ratio under the guidance of sedimentary model,and the spa- tial distribution of channel sand and the payable areas were identified.The drilling exploration demonstrated that a good forecasting effect was obtained by this method.
An integrated seismic-geologic study was implemented in this paper,focusing on seismic i- dentification of channel sand-bodies in Fu-Yang oil layer hosted in Members 3-4,Quantou For- mation in the northern Songliao Basin.In the light of the high resolution sequence stratigraphy and sedimentary petrography,a sedimentary model for microfacies and channel sand-bodies was set up.Based on a synthetic method of drilling and seismicity,and combined to layered com- parison,the framework of stratigraphyic sequence and the regional distribution modes of micro- facies were established,and the contact boundaries of fourth-order sequence which was correla- tive and traceable in seismic sections were identified.Sand ratio was matched based on multi- ple regression and clustering analysis on multiple seismic attribute.Micro-facies was interpre- ted from the plan diagram of sand ratio under the guidance of sedimentary model,and the spa- tial distribution of channel sand and the payable areas were identified.The drilling exploration demonstrated that a good forecasting effect was obtained by this method.
引文
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董焕忠2004． 河流-三角洲储层沉积微相的模糊识别.大庆石油地质与开发,23(6) :22-24． Dong Huanzhong.2004． Fuzzy diagnosis of sedimentary microfacies in fluvial delta reservoir.Petroleum Geology & Oilfield Development in Daqing,23 (6) :22-24．
高静怀,陈文超,李幼铭,田芳.2003． 广义S变换与薄互层地震响应分析.地球物理学报,46(4) :526-532． Gao Jinghuai,Chen Wenchao,Li Youming and Tian Fang.2003． Generalized S transform and seismic response analysis of thin interbeds.Chinese Jour.Geophys.,46(4) :526-532．
李霞,范宜仁,杨立伟,房文静.2006． 测井曲线小波变换特性在层序地层划分中的应用.大庆石油地质与开发,25 (4) :112-114． Li Xia,Fan Yiren,Yang Liwei and Fang Wenjing.2006． Application of wavelet inversion characteristics of logging curve in the classification of sequence stratigraphy.Petroleum Geology & Oilfield Development in Daqing,25(4) :112-114．
李振英,冯国庆,张烈辉.2004． 神经网络方法在水淹层识别中的改进大庆石油地质与开发,23(3) :44-45． Li Zhenying,Feng Guoqing and Zhang Liehui.2004． Improvement of neural network in water-flooded zone identification.Petroleum Geology & Oilfield Development in Daqing,23 (3) :44-45．
万涛,高静怀,陈文超,王宝江.2005． 三参数小波及其在薄互层地震资料分析中的应用.煤田地质与勘探,33(4) :69-72． Wan Tao,Gao Jinghuai,Chen Wenchao and Wang Baojiang.2005． TP wavelet and its applications to analysis of seismic data of thin interbeds.Coal Geology & Exploration,33(4) :69-72．
于兴河(编著).2002． 碎屑岩系油气储层沉积学.北京:石油工业出版社.1-360． Yu Xinghe(ed.).2002． Sedimentology of Petroclastic Rock Reservoir.Beijing:Petroleum Industry Press.1-360．
于兴河,李剑峰.1996． 碎屑岩系储层地质建模及计算机模拟.北京:地质出版社.1-265． Yu Xinghe and Li Jianfeng.1996． Geological Modelling and Computer Simulation of Petroclastic Rock Reservoir.Beijing:Geological Publ.House.1-265．
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