地震波形指示反演方法及其应用  

A method of seismic meme inversion and its application

作　　者：陈彦虎 毕建军[2] 邱小斌 陈有兵 杨辉 曹佳佳 邸永香 赵海山 李志向 CHEN Yanhu;BI Jianjun;QIU Xiaobin;CHEN Youbing;YANG Hui;CAO Jiajia;DI Yongxiang;ZHAO Haishan;LI Zhixiang(PEGETE Group Inc,Beijing 100101,China;China University of Mining and Technology(Beijing),Beijing 100083,China)

机构地区：[1]北京中恒利华石油技术研究所,北京100102 [2]中国矿业大学(北京)地球科学与测绘工程学院,北京100083

出　　处：《石油勘探与开发》2020年第6期1149-1158,共10页Petroleum Exploration and Development

摘　　要：针对陆相盆地储集层厚度小、横向变化大,而实际生产对地震分辨率精度要求越来越高的情况,在分析地震沉积学技术特点的基础上,提出了地震波形指示反演方法。该方法通过地震波形动态聚类分析,建立地震波形结构与高频测井曲线结构的映射关系,提高了反演结果的纵向分辨率和横向分辨率;通过构建不同地震相类型的贝叶斯反演框架,实现了真正意义上的相控反演。正演模型验证结果表明,地震波形指示反演可以实现3 m厚度的薄互层精细预测,证明了方法的合理性和反演结果的高精度。大庆长垣应用实例表明,地震波形指示反演对薄互层的识别精度可达2 m,反演结果与钻井的吻合率超过80%。地震波形指示反演能够提高储集层预测精度,为陆相盆地薄互层识别提供了借鉴和参考。Under the condition of thin interbeds with great lateral changes in terrestrial basins,a seismic meme inversion method is established based on the analysis of seismic sedimentology technology.The relationship between seismic waveform and high-frequency well logs is established through dynamic clustering of seismic waveform to improve the vertical and horizontal resolution of inversion results;meanwhile,by constructing the Bayesian inversion framework of different seismic facies,the real facies controlled inversion is realized.The forward model verification results show that the seismic meme inversion can realize precise prediction of 3 m thick thin interbeds,proving the rationality and high precision of the method.The application in the Daqing placanticline shows that the seismic meme inversion could identify 2 m thick thin interbeds,and the coincidence rates of inversion results and drilling data were more than 80%.The seismic meme inversion method can improve the accuracy of reservoir prediction and provides a useful mean for thin interbeds prediction in terrestrial basins.

关 键 词：地震反演 地震波形指示反演 相控反演 储集层预测 大庆长垣 薄互层 

分 类 号：TE122.1[石油与天然气工程—油气勘探]