【摘要】 随着井下采集装备技术的不断进步,VSP勘探的井下检波器由模拟向数字转化,检波器级数由单级向多级转变甚至大阵列发展。多级大阵列井下检波器在技术上具有子波一致性好,地震波场稳定,数据处理时三分量旋转、合成更简单更精确等优点。使其在生产中,减少了占井时间,降低了安全风险,极大地提高了施工效率。本文从常规VSP、Walkaway-VSP和3D-VSP项目入手分析了多级大阵列的优点,解决了地面地震处理解释中的某些难点,展示了多种良好的应用效果。更多还原

【Abstract】 With the progress of downhole data acquisition technology,downhole geophone applied for VSP exploration changed from analog to digital and continously developed toward multi-level and even large array.Multi-level (large array) downhole geophone has the obvious advantages including good wavelet coherence,stable wavefield,three-components rotation,simple synthesis and high accurate.In the VSP prospecting,this kind of geophone can reduce the well-occupying time,lower down the security risk and enormously improve the production efficiency.This paper introduced the advantages of multi-level (large array) downhole geophone through conventional VSP、walkaway-VSP and 3D-VSP,those advantages can successfully solve some difficulties in surface seismic data processing and interoperation and show upstanding application effects.更多还原