基于改进蚁群追踪策略的地震层位自动识别方法

发布时间：2018-06-07 05:17

本文选题：层位自动追踪 + 地震数据预处理　；参考：《石油地球物理勘探》2017年03期

【摘要】：目前层位拾取和标定更多地是依靠人工或机器辅助的方式进行,如同相轴追踪、基于神经网络和图像边缘提取技术的层位拾取,业界的地震层位追踪方法偏重于三维层位追踪和剖面自动追踪算法。存在效率低、需要人为指定种子点、训练追踪时间长等缺陷,且每次只能完成一个层位(面)追踪,无法对层间关系进行解释。为此,提出了基于改进蚁群追踪策略的地震层位自动识别方法。首先采用改进的加权中值滤波对地震数据进行预处理,在增强同相轴连续性的基础上,减少了传统种子点生长算法中的人为参与;基于蚁群算法的基本思想,引入支持向量机(SVM)技术对地震数据进行分类处理,同时综合考虑地震振幅、瞬时相位、层位倾角、信息素浓度等多种信息,纳入蚁群层位追踪的评价函数,采用改进的蚁群搜索算法实现地震层位自动追踪。通过对追踪区域进行划分,实现区域内小层加密,提供多种合理的层位加密策略,完成地震层位追踪后期处理。实际资料应用结果检验了方法的有效性,为层序地层分析、沉积体系域解释、精细储层描述提供了技术思路。
[Abstract]:At present, layer pickup and calibration mostly depend on manual or machine aided methods, such as phase axis tracking, layer picking based on neural network and image edge extraction technology. Seismic horizon tracing methods in the industry are focused on three-dimensional horizon tracing and automatic section tracing algorithms. There are some defects such as low efficiency, artificial seed points, long training tracking time, and only one layer (plane) trace can be completed at a time, which can not explain the relationship between layers. Therefore, an automatic seismic horizon recognition method based on improved ant colony tracking strategy is proposed. Firstly, the improved weighted median filter is used to preprocess the seismic data, which reduces the artificial participation in the traditional seed point growth algorithm on the basis of enhancing the continuity of the in-phase axis, and based on the basic idea of ant colony algorithm, The support vector machine (SVM) technique is introduced to classify and process seismic data. At the same time, seismic amplitude, instantaneous phase, horizon dip angle, pheromone concentration and other information are considered synthetically, which is included in the evaluation function of ant colony horizon tracing. An improved ant colony search algorithm is used to realize automatic seismic horizon tracing. By dividing the tracing area to realize the layer encryption in the region and provide a variety of reasonable layer encryption strategies to complete the post-processing of seismic horizon tracing. The application results of practical data verify the validity of the method and provide technical ideas for sequence stratigraphic analysis, interpretation of sedimentary system tracts and fine reservoir description.
【作者单位】：中国石油大学(北京)克拉玛依校区;东营市人力资源和社会保障局信息中心;中国石油大学(华东)计算机与通信工程学院;中国石化胜利油田有限公司物探研究院;
【基金】：国家重点基础研究发展计划(“973”计划)项目(2013CB228604)资助
【分类号】：P631.4

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