基于支持向量机的时深建模方法  

TIME-DEPTH MODELING METHOD BASED ON SVM

作　　者：袁航 谢玮[1] 毕臣臣 岳占伟 刘伟[1] 刘学清 YUAN Hang;XIE Wei;BI Chenchen;YUE Zhanwei;LIU Wei;LIU Xueqing(School of Geophysics and Information Technology, China University of Geosciences, Belting 100083, China;Beijing Energy Oil ＆ Gas Resources Development Co. Ltd. , Beijing 100022, China)

机构地区：[1]中国地质大学(北京)地球物理与信息技术学院,北京100083 [2]北京京能油气资源开发有限公司,北京100022

出　　处：《大庆石油地质与开发》2018年第3期153-157,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家科技重大专项"前陆冲断带及复杂构造地震成像关键技术与构造圈闭刻画"(2016ZX05003-003);中国石油化工集团公司项目"基于绕射波成像的缝洞储集体预测技术研究"(JP16033)联合资助

摘　　要：为了解决海上勘探初期地震资料解释过程中的时深关系问题,提出基于粒子群和支持向量机的时深建模方法,利用粒子群算法来优化支持向量机的参数。首先由合成地震记录标定得到每口井的时深关系;然后利用支持向量机方法建立时间与深度之间的关系模型;最后以此模型对时间域等T0图进行转换,从而得到深度域的构造图。实际测井数据和三维地震资料试验结果表明,该方法建立的时深关系模型适用于整个研究区,且时间域转换深度与井分层深度、构造深度之间的误差较小,能够满足精细构造解释的精度要求。In order to solve the problem of time-depth relationship during the seismic data interpretation for the initial offshore exploration,the time-depth modeling method was proposed based on the particle swarm and support vector machines（ SVM）,and moreover the SVM parameters were optimized by Particle Swarm Optimization（ PSO）. Firstly the time-depth relationships for each well were obtained by the synthetic seismogram calibration;and then the relationship model between the time and depth was established with the help of SVM method; finally with the help of the model,the conversion was conducted for the T0 contour in the time domain,then the structural map for the depth domain was obtained. The test results of the actual logging data and 3 D seismic data show that the time-depth relationship model built by the method is suitable to the whole study area,and moreover the errors are pretty small between the inverted depth in the time domain and the well separated depth and the structural depth. In a word,the model can meet the precision requirements of the fine structure interpretation.

关 键 词：地震资料解释 粒子群算法 支持向量机 时深关系建模 

分 类 号：P631[天文地球—地质矿产勘探]