Abstract Accurate delineation of geobodies is one of the major tasks of hydrocarbon exploration from three-dimensional seismic data. Salt bodies, in particular, are one of the toughest geobodies to model. Their natural process of formation leads to their complex geometry and topology. With the increasing size of acquisition data every year, traditional manual delineation methods become increasingly labor-intensive. On the other hand, it remains a significant challenge to extract salt surfaces automatically from seismic data without human intervention. We present an interactive and semi-automatic sketch-based modeling approach to help interpreters model salt bodies by directly deforming the surface of a pre-existing mesh. This mesh may be an inaccurate result of an automatic method or a crude and simple initial surface. We used our method to model salt domes from two public three-dimensional seismic volumes. The results indicate that, with our proposed approach, a user can obtain suitable meshes of salt bodies in a process that is intuitive and less prone to errors.

中文翻译：

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一种基于 3D 草图的公式，用于根据地震数据模拟盐体

摘要 利用三维地震资料准确圈定地质体是油气勘探的主要任务之一。特别是盐体是最难建模的地质体之一。它们的自然形成过程导致了它们复杂的几何形状和拓扑结构。随着采集数据的规模逐年增大，传统的人工勾画方法变得越来越耗费人力。另一方面，在没有人工干预的情况下从地震数据中自动提取盐面仍然是一个重大挑战。我们提出了一种交互式和半自动的基于草图的建模方法，通过直接变形预先存在的网格的表面来帮助解释器建模盐体。此网格可能是自动方法的不准确结果，也可能是粗糙简单的初始曲面。我们使用我们的方法从两个公共三维地震体模拟盐丘。结果表明，使用我们提出的方法，用户可以在直观且不易出错的过程中获得合适的盐体网格。