On the Vertical Seismic profiling in Borehole Geophysics

钻孔地球物理中的垂直地震剖面研究

• 批准号: 61550465
• 负责人: ROKUGAWA Shuichi
• 金额: $ 1.28万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61550465/
• 关键词: Borehole Geophysics; VSP; Tube Wave; Body wave; Surface Wave; フィルター逆投影; 像再生; 地下資源・構造探査; VSP探査法; 受振器の坑井内設置; 波動方程式モデリング; 波動伝播挙動の解明

Vertical Seismic Profiling(VSP) is one of the borehole based exploration techniques. Particular problems in VSP are tube waves and converted waves. These waves, for examples, generate at the discontinuities of the borehole and the fracture zone of the layer. In this project, physical behaviors of tube waves are observed and analyzed through experimental scale models. A two dimensional polycarbonate plate model is used. Though physical conditions of this modee is different from that of actual field, similar behaviors of the tube waves are clearly observed. Then various source-receiver patterns for seismic tomography are assumed, and the tube waves are experimentally simulated and analyzed. As the results, this kind of experimental model proved to be one of the best methods to study these distutbing waves.

垂直地震剖面（VSP）是一种基于井眼的勘探技术。VSP中的特殊问题是管波和转换波。例如，这些波产生于钻孔的不连续面和地层的破裂带。本课题通过实验模型对管波的物理行为进行了观察和分析。采用二维聚碳酸酯板模型。虽然该模态的物理条件与实际场不同，但可以清楚地观察到管波的相似行为。在此基础上，假设了地震层析成像的各种源接收机模式，并对管波进行了实验模拟和分析。结果表明，这种实验模型是研究这些扰动波的最佳方法之一。

项目成果

Shuichi ROKUGAWA.: "Geotomography: Theoretical Background." Geophys. Explor.39. 377-383 (1986)

Shuichi ROKUGAWA.：“地层摄影术：理论背景。”

石井吉徳: 物理探査学会誌. 39. 329-339 (1986)

石井义典：《物理探索学会杂志》39. 329-339 (1986)。