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首页> 外文期刊>Interpretation >Introduction to special section: Seismic inversion --Conventional seismic impedance inversion and advanced seismic inversion techniques: Developments, workflow, and case studies
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Introduction to special section: Seismic inversion --Conventional seismic impedance inversion and advanced seismic inversion techniques: Developments, workflow, and case studies

机译：特殊部分简介：地震反转 - 转化地震阻抗反演和先进地震反演技术：发展，工作流程和案例研究

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摘要

Seismic inversion is a key component of the quantitative seismic interpretation workflows for hydrocarbons exploration and production. In exploration with limited well control, seismic inversion for acoustic impedance helps to understand the spatial variations and identify potential "pay zones." When more wells are available, a more robust and sophisticated methodology is to perform a prestack inversion, thus obtaining acoustic and shear impedances as well as density to understand subtle variation in rock properties at the reservoir scale. The conventional seismic inversion results strongly depend upon the quality of seismic data, seismic velocity, and seismic illumination factors that are always problematic in complex areas. Recently, there are many advanced approaches of seismic inversion from depth domain seismic inversion, nonlinear elastic inversion to direct wavefield/ampli-tude variation with offset (AVO) inversion for more reliable reservoir properties. These methods examine the underlying and fundamental assumptions behind inversion methods, and to point out the essential conceptual and practical differences and consequences between "indirect" and direct methods for inversion/AVO. The role and balance between direct and indirect inversion methods are important for an effective processing and interpretation strategy.
机译：地震反演是碳氢化合物勘探和生产的定量地震解释工作流程的关键组成部分。在有限的控制良好控制的探索中，声阻抗的地震反转有助于了解空间变化和识别潜在的“付费区域”。当更多井可用时，更稳健和复杂的方法是进行预先进行的倒置反转，从而获得声学和剪切阻抗以及密度以理解储存量表中的岩石性质的微妙变化。传统的地震反演结果强烈取决于地震数据，地震速度和地震照明因子的质量，这些质量在复杂地区始终存在问题。近来，从深度域地震反转，非线性弹性反转与直接波场/放大型变异的非线性弹性反转，具有偏移（AVO）反转以进行更可靠的储层性能。这些方法研究了反转方法背后的潜在和基本假设，并指出了“间接”与反演/ AVO的直接方法之间的基本概念和实际差异和后果。直接和间接反转方法之间的作用和平衡对于有效的处理和解释策略非常重要。

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