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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Generating Seismic Horizon Using Multiple Seismic Attributes
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Generating Seismic Horizon Using Multiple Seismic Attributes

机译：使用多种地震属性产生地震视野

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摘要

Today's 3-D seismic surveys usually contain hundreds of inline and crossline vertical seismic slices. Seismic interpreters usually need to spend weeks or even months for manually picking horizons on vertical seismic slices. Researchers have developed algorithms to accelerate horizon picking and most algorithms employ the seismic reflector's dip as the input. However, the computed seismic reflector's dip is usually inaccurate near and across the discontinuities in the seismic images. Note that the time samples which belong to the same horizon should have approximate similar seismic instantaneous phase values. We propose to automatically track the seismic horizon simultaneously considering the seismic reflector's dip and instantaneous phase attributes. Our algorithm aims to achieve three objectives: 1) minimizing the difference between the dip computed using tracked horizon and seismic dip attribute, 2) minimizing the difference among instantaneous phase value of the time samples on the tracked horizon, and 3) the tracked horizon exactly passes through user-defined control points (seeds). A constrained conjugate least-square algorithm is employed to solve our optimization problem. The applications show that the tracked horizon which only uses dip attribute would "jump" from one seismic event to another seismic event near the unconformity zone. However, the horizon tracked using the proposed method strictly follows the same seismic event over the whole seismic survey.
机译：今天的3-D地震调查通常包含数百个内联和横向垂直地震切片。地震翻译员通常需要花几周甚至几个月来手动采摘垂直地震切片上的视野。研究人员已经开发出算法，以加速地平线拣选，大多数算法采用地震反射器的浸渍作为输入。然而，计算的地震反射器的倾角通常在地震图像中的不连续性附近不准确。注意，属于同一地平线的时间样本应该具有近似类似的地震瞬时相位值。我们建议在考虑地震反射器的倾角和瞬时相位属性同时自动跟踪地震地平线。我们的算法旨在实现三个目标：1）最大限度地减少使用跟踪地平线和地震DIP属性计算的DIP之间的差异，2）最大限度地减少跟踪地平线上的时间样本的瞬时相位值之间的差异，以及3）跟踪的地平线通过用户定义的控制点（种子）。采用受约束的共轭最小二乘算法来解决我们的优化问题。应用程序表明，仅使用DIP属性的跟踪地平线将从一个地震事件中“跳转”到不整合区域附近的另一个地震事件。然而，使用所提出的方法跟踪的地平线严格遵循整个地震调查的相同地震事件。

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