储层表征

快速高频波成像技术提高了复杂地质的分辨率

本文描述了慢度域中单程波动方程的实现，输出高达奈奎斯特频率的地震道集，可用于生成高分辨率地震剖面和振幅与偏移距关系研究。

图 1 使用一个点自动跟踪地平线，由于成像代码的无噪声特性，显示出更高的置信度。
图 1 使用一个点自动跟踪地平线，由于成像代码的无噪声特性，显示出更高的置信度。
来源：IPTC 24791。

本文描述了在慢度域中实现单程波动方程的方法，该方法能够输出高达奈奎斯特频率的地震道集，可用于生成高分辨率地震剖面；这些道集可用于振幅-偏移距（AVO）分析。文中通过海洋、海底电缆（OBC）和陆地三维地震等示例数据集展示了该方法的应用。

介绍

逆时偏移（RTM）长期以来一直被用于解决复杂成像问题，尤其是在基于射线追踪的方法因地下成像的复杂性而失效时。RTM 在过去几十年中取得了巨大的成功，但仍存在局限性。由于 RTM 采用的是双向全弹性方法，因此其模型输入必须非常精确。

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Reservoir characterization

Rapid High-Frequency Wave Imaging Improves Resolution of Complex Geology

This paper describes the implementation of a one-way wave equation in slowness domain outputting gathers up to Nyquist frequency, which can be used to generate high-resolution seismic sections and amplitude-vs.-offset studies.

Fig. 1—Autotracked horizon using one point showing higher confidence as a result of the noise-free nature of the imaging code.
Fig. 1—Autotracked horizon using one point showing higher confidence as a result of the noise-free nature of the imaging code.
Source: IPTC 24791.

This paper describes the implementation of one-way wave equation in slowness domain outputting gathers up to Nyquist frequency, which can be used to generate high-resolution seismic sections; the gathers can be used for amplitude-vs.-offset (AVO) studies. The implications of the methodology are presented with example data sets such as marine, ocean-bottom cable (OBC), and land 3D seismic.

Introduction

Reverse time migration (RTM) has long been used for solving complex imaging when ray-based methods fail because of complexity in subsurface imaging. RTM has delivered major success during the past few decades but has limitations. The model input to RTM, because of the two-way full elastic method, must be highly precise.

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