基于视觉特征的地震资料品质分析方法

Seismic data quality analysis based on visual features

地震剖面品质分析是地震勘探领域一项基础而富有挑战性的事项,可靠的地震剖面品质评价标准可用于地震、地质综合解释、指导(下轮次)数据采集和处理等。地震剖面品质评价最准确的方式是通过人眼判读。然而主观的评价方法因费时、费力、成本较高,难以在实际中广泛开展;同时,传统的客观评判地震剖面品质方法利用的振幅、频率和信噪比等参数指标并不能很好地切合人眼的主观感受。因此,需探寻基于人眼视觉感知的品质分析和评判方法。本文基于视觉特征多通道结构理论中的方向性和空间频率特征,开展了地震资料品质分析方法研究,实际应用效果基本符合主观评价结果。该方法对于地震剖面品质分析具有很强的适用性。

Seismic section quality analysis is a fundamental and challenging work in the hydrocarbon exploration. Reliable quality evaluation standards should be needed in seismic interpretation,and used for the guidance of future seismic acquisition and processing.The most accurate way for seismic section quality evaluation is by human eyes.However this subjective evaluation method cannot be widely used in practice due its high cost.At the same time,objective evaluation methods based on amplitude,frequency,and signal-to-noise ratio(S/N)are not good in accordance with human subjective feeling.Based on visual features,direction features,and spatial frequency characteristics of the multi-channel structure theory,we propose a new approach to seismic section quality evaluation.Our proposed approach achieves good results as the subjective evaluation method,which may be an appropriate one in practice.