基于井间地震层析成像的拟三维展示及其应用  

Pseudo 3D Display and Its Application Based on Cross-well Seismic Tomography

作　　者：刘礼领 田龙强 王彦兵 陈庆伟 Liu Liling;Tian Longqiang;Wang Yanbing;Chen Qingwei(Central Southern China Electric Power Design Institute Co.,Ltd.;State grid Economic and Technological Research Institute Co.,Ltd.;Economic and Technological Research Institute of State Grid Shandong Electric Power Compary)

机构地区：[1]中国电力工程顾问集团中南电力设计院有限公司,武汉市430071 [2]国网经济技术研究院有限公司,北京市102209 [3]国网山东电力公司经济技术研究院,济南市250021

出　　处：《勘察科学技术》2023年第5期46-50,共5页Site Investigation Science and Technology

基　　金：国家电网有限公司科技项目“变电站(换流站)工程三维地质模型构建及其协同设计技术研究”(5200-201956110A-0-0-00)资助。

摘　　要：传统的地震层析成像探测中,通常是进行单一井对成像剖面的分析研究,对研究区总体地下异常体没有三维直观反映。该文介绍了基于多个井间初至信息进行联合迭代重建法反演,利用固定间距水平速度切片提取,使用克里金法进行三维空间插值得到三维速度体。通过实际工程应用结果表明:基于多井数据的拟三维井间地震层析成像,可有效提高地下岩溶的解释精度,有利于总体地质结构的认识和评价。In traditional seismic tomography detection,the analysis and research of single-well imaging profiles are usually carried out,and there is lttle three-dimensional intuitive reflection of the overall abnormal underground bodies in the research area.This paper introduces the joint selective reconstruction method inversion based on the first arrival information between multiple inter wells,using fixed spacing horizontal velocity slices for extraction,and using the Kriging method for 3D spatial interpolation to obtain the 3D velocity volume.Practical engineering application results show that the pseado 3D cross-well seismic tomography based on multi-well data can effectively improve the interpretation accuracy of underground karst,and is conducive to the understanding and evaluation of the overall geological structure.

关 键 词：井间地震 层析成像 速度切片 拟三维成像 

分 类 号：P631.4[天文地球—地质矿产勘探]