微地震可视化系统的设计与实现

发布时间：2018-06-04 20:21

本文选题：科学可视化 + 地震数据　；参考：《电子科技大学》2015年硕士论文

【摘要】：微地震通常是利用水力压裂或常规注水、注气等石油工程作业时引起地下应力场变化而产生,是分析油气储层分布走向的重要依据。微地震监测技术是通过对收集的微地震信号采用可视化技术进行压裂裂缝成像,对储层流体运动进行监测的技术。随着计算机软硬件水平的不断提高,科学可视化技术在地震数据处理与解释工作中的地位也日益突出,尤其是地震数据三维可视化技术已经成为地质研究的前沿技术,也是目前地震数据处理系统的关键核心,因此,设计一套地震数据三维图像系统也极为迫切。将原始数据以图像这一可视方式直接显示则更加直观,并且可以依此揭示隐藏在数据内部的规律,为处理人员提供准确、可靠并且直观的处理依据。本文首先通过对石油勘探行业中最为普遍的地震数据格式——三维地震数据(SEGY格式)进行分析,正确地解析出SEGY格式数据的文件头和数据体,并能够正确的读取各个字段的数据,为地震数据三维图像系统绘图提供了基础。其次利用解析出来的三维地震数据,根据不同的读取策略读取数据,绘制数据体各个方向上剖面图,其中为保证图像的质量,在绘图过程中使用了双线性插值算法,再利用OpenGL纹理贴图技术,将图像映射到三维场景中,实现了地震数据三维数据场整体显示、各个方向的切片显示。最后,设计了三维图像系统的部分交互功能,包括三维场景的坐标系变换,旋转,缩放,色标标注,图像透明度设置等。
[Abstract]:Microearthquakes are usually caused by the change of underground stress field in oil engineering such as hydraulic fracturing or conventional injection of water and gas injection etc. It is an important basis for analyzing the distribution and strike of oil and gas reservoirs. Micro-seismic monitoring technology is a technique to monitor the fluid movement of reservoir by using visualization technology to image fracture fracturing and collecting microseismic signals. With the development of computer software and hardware, the position of scientific visualization technology in seismic data processing and interpretation is becoming more and more prominent, especially the 3D visualization technology of seismic data has become the frontier technology of geological research. It is also the key point of seismic data processing system, so it is very urgent to design a 3D seismic data image system. It is more intuitionistic to display the raw data directly in the visual way of image, and can reveal the rules hidden in the data according to this, and provide accurate, reliable and intuitionistic basis for the processing personnel. Firstly, by analyzing the most popular seismic data format in the petroleum exploration industry, the 3-D seismic data format, the paper correctly analyzes the file header and data body of the SEGY format data. And the data of each field can be read correctly, which provides the foundation for 3D image system drawing of seismic data. Secondly, according to the different reading strategies, we read the data from the three dimensional seismic data and draw the section map in every direction of the data body. In order to ensure the quality of the image, the bilinear interpolation algorithm is used in the process of drawing. Then using OpenGL texture mapping technology, the image is mapped to 3D scene, and the whole display of 3D data field of seismic data and slicing display in all directions are realized. Finally, some interactive functions of 3D image system are designed, including coordinate system transformation, rotation, scaling, color labeling, image transparency setting and so on.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P631.4

【相似文献】