随钻数据三维可视化关键技术研究

发布时间：2018-06-07 08:09

本文选题：三维可视化 + 三维地震　；参考：《中国石油大学(华东)》2015年硕士论文

【摘要】：随着油气资源开发规模的不断扩大,勘探开发过程中地质环境日趋复杂,传统钻井技术遇到越来越多的挑战。随钻地质导向技术作为一种新兴的综合型钻井技术,通过对钻井过程中各项信息的综合分析,对钻遇地层的地质属性做出实时判断,控制钻头前进方向,实现精准命中目标油层的目的。该技术能够有效解决复杂地质环境下油气资源开发的难题,具有提升油层钻遇率、降低钻井风险等优点,应用前景极为广阔。随钻数据三维可视化技术作为随钻地质导向技术中的关键组成部分,在国内仍处于发展阶段,有关问题还有待进一步研究。因此,本课题将立足技术发展前沿,针对随钻数据可视化的相关内容展开研究,着重解决三维地震数据可视化问题。在分析总结国内外随钻地质导向技术、地震数据三维可视化技术研究内容、发展现状基础上,确定了本课题的研究内容。通过针对科学计算可视化、三维可视化方法理论知识的学习,明确了数据可视化的一般处理流程,掌握了体绘制技术的实现原理。首先分析了三维地震数据的组织结构,给出了基于SEGY格式文件的数据处理流程、数值解析方法及数据抽取算法。然后对地震数据可视化方法开展研究,给出了地震数据波形图的实现方法、颜色映射算法、变密度图的实现原理及颜色插值算法,给出基于多分辨率八叉树的地震数据体表示结构及文件转换方法,实现了基于纹理映射的三维空间体绘制算法。最后根据随钻实际需求,提出一种基于OIV和Qt的三维可视化系统解决方案,给出了各模块的设计思路及实现方法,并完成系统的初步开发工作。该系统较好地解决了随钻地震数据体可视化的主要问题,满足了大规模数据体的快速可视化的功能需求,为随钻地质导向钻井技术的深入应用奠定了良好的基础。
[Abstract]:With the development of oil and gas resources, the geological environment is becoming more and more complicated in the process of exploration and development, and the traditional drilling technology is facing more and more challenges. As a new comprehensive drilling technology, the geological guidance technology while drilling, through the comprehensive analysis of various information in drilling process, makes a real-time judgment on the geological properties of the drilling encounter formation, and controls the direction of the drill bit forward. To achieve the goal of accurately hitting the target reservoir. This technology can effectively solve the difficult problem of oil and gas resource development in complex geological environment, and has the advantages of increasing drilling rate and reducing drilling risk. It has a very broad application prospect. As a key part of the geological guidance technology while drilling, the 3D visualization technology of drilling data is still in the developing stage in China, and the related problems need to be further studied. Therefore, this topic will be based on the technical development frontier, aiming at the related content of data visualization while drilling, focusing on solving the problem of 3D seismic data visualization. On the basis of analyzing and summarizing the research contents of geological guidance while drilling technology and 3D visualization of seismic data at home and abroad, the research content of this subject is determined. By studying the theoretical knowledge of scientific computation visualization and 3D visualization method, the general processing flow of data visualization is clarified, and the realization principle of volume rendering technology is mastered. Firstly, the organization structure of 3D seismic data is analyzed, and the data processing flow, numerical analysis method and data extraction algorithm based on SEGY format file are given. Then the visualization method of seismic data is studied, and the realization method of seismic data waveform map, the algorithm of color mapping, the realization principle of variable density map and the algorithm of color interpolation are given. The representation structure and file conversion method of seismic data volume based on multi-resolution octree are presented, and a 3D spatial volume rendering algorithm based on texture mapping is implemented. Finally, according to the actual requirements of drilling while drilling, a solution of 3D visualization system based on OIV and QT is proposed, and the design ideas and implementation methods of each module are given, and the preliminary development of the system is completed. The system solves the main problems of visualization of seismic data volume while drilling, satisfies the functional requirements of rapid visualization of large scale data bodies, and lays a good foundation for the further application of drilling while drilling geological guided drilling technology.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE242;TP391.41

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