In order to overlay display the characteristics of sedimentary facies data and distribution of oil and water wells,as well as be more convenient and intuitive to show the distribution of remaining oil and helpful for the decision makers of foundation for decision making,some methods of sedimentary facies data visualization are studied because visualization of geological data is a key step in the construction of digital oil field. Based on the geological data mapping platform,data visualization technology and triangulation technology is applied to research the distribution characteristic and data rules of sedimentary facies. In this paper,the development,implementation steps and key core technology of data visualization and main ideas,steps and implementation method of triangulation technology are intro-duced. The method of visualization mapping is mainly based on triangulation and the methods of the data preprocessing,steps of establis-hing convex closure and triangular mesh optimization is discussed. The system relied on takes Java2D as the core of rendering technolo-gy. Its high speed of visual mapping,high accuracy and convenient man-machine interaction make the system very excellent,which a-chieves the expected objective.%为了将各种沉积相数据的特征以及油水井的布局叠加展示，以便更加直观地表现出剩余油层的分布情况，从而为油田的开发决策者提供决策依据，研究了沉积相数据可视化的一些方法，因为地质数据可视化技术是建设数字油田的关键步骤。以地质数据成图平台为依托，结合常见的数据可视化技术、三角剖分技术对沉积相数据进行可视化的研究与应用。主要介绍了数据可视化的发展、实现的步骤、关键核心技术以及三角剖分的主要思想、步骤、实现的方法等。其中可视化映射的方法主要以三角网格剖分为主，也描述了数据的预处理、凸包建立步骤以及三角网优化等算法。系统以Ja-va2D绘图技术为核心，可视化映射速度快、精准度高、人机交互方便快捷，达到了预想的实验目的。
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