摘要
地质图件是研究人员的重要参考资料,许多研究成果都是以图形形式表现出来。提高绘制地质图件的准确性、重复利用率等尤为重要。矢量化是最终替代手工清绘图纸的技术手段。经该技术处理过的矢量图在精确性、可操作性和易修改性等方面与光栅图相比,具有很大的优点。矢量化技术是地质勘探开发研究中的一个重要工具。
地质结构建模的本质就是通过分析各种可靠的原始资料,采用三维图形学的方法建立油气藏的地层框架模型和层状实体模型。该模型能反映地质构造以及各个结构之间的关系。再依据地质统计学的数据插值和模拟方法来建立面向储层的物理属性模型,进而研究油气藏开发中的不确定性和投资风险,为油气藏的动态模拟提供数据,为开发提供决策依据。
本文就开发地质解释平台系统过程中所涉及到的矢量化技术,以及地质结构建模中用到的网格变形技术进行了深入的研究。
首先介绍矢量化技术的基本原理、常用的矢量化处理方法等,并结合地质解释平台中的几个典型例子进行探讨。实现地物区域边界的矢量化,并且把二分步长的矢量化新算法应用到测井曲线矢量化上,取得了较好的效果。
其次对基于网格变形的地质结构建模方法进行深入的研究,实现了有方向和无方向断层约束的网格化算法。最后以VC++6.0为工具,初步建立一个地质解释平台的系统原型,实现了地质结构建模中的部分功能模块。
Geological map is an important source for researchers, and many research results are shown by graphic. It is especially important to enhance accuracy and recycling of the geological map. Vectorization is ultimately to replace manual paper-graphics technology. The technology addressed by the vectors in the accuracy, ease of modification, and other operational aspects of a raster map has great advantages. The vectorization technology is a important tool in geological prospecting development research item.
The essential of modeling geological structure is, using analysis of the original data, establish a model of three-dimensional graphics reservoir which is able to make reservoir model and stratigraphic framework layered solid model. This model indicates the relationship between the geologic structure as well as each structure relations. Moreover, according to the statistical difference and the model of simulation, establishes the reservoir physical property model, thus in the research oil gas pool development's uncertainty and the investment risk, provide the data for dynamic simulation of the oil gas pool's and the policy-making basis for the development.
This paper vectorization technology which involves in the development geologic interpretation platform system process, as well as in the geologic structure modelling uses the grid distortion technology has conducted the thorough research.
Firstly, introduced vector technology to the basic principle of common vectorization processing methods and geological interpretation platform with a few typical examples are discussed. Implementation of the feature vectorization of the border region, and the dichotomy step-length of the new algorithm applied to well logs on vectorization, and achieved good results.
Secondly, Deeply studying which based on the grid tectonic deformation modeling methods, realized had the direction and the non-direction fault restraint grid algorithm. Finally take VC++6.0 as the tool, builds a geologic interpretation platform initially the system prototype, has realized in the geologic structure modelling partial functional module.
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