基于GIS图形数据库的油气资源评价

OIL AND GAS RESOURCES ASSESSMENT BASED ON GRAPHIC DATABASE OF GEOGRAPHIC INFORMATION SYSTEM

介绍了适用于油气资源评价的基于ＧＩＳ的图形数据库．对建立该图形数据库的基本思想，如空间数据和非空间数据的对应关系和数据链接问题，图形数据库的源数据、信息类别以及数据库的结构等进行了讨论．结合油气资源评价的需要，将有关信息类型划分为５类，即地理基础图形信息，基础地质图形信息，物、化探数据图形信息，地层图形信息，油气资源评价图形信息等，并对每类信息匹配以不同的属性加以说明和描述．该图形数据库实现了数字制图、数据管理、空间查询和空间分析等功能．最后结合实例进行了应用分析，取得了较好的效果．

A graphic database based on GIS for oil and gas resources assessment is introduced in this paper. Also discussed are the basic principles for establishing the database, such as corresponding relations and chaining between spatial data and nonspatial data, resource data, classification of spatial geoinformation, structure of database. According to the need of oil and gas resources assessment, the spatial geoinformation is classified into 5 types: geographic information, geologic information, geophysic and geochemic information, stratigraphic information, and oil and gas resources assessment information. The graphic information is matched with different attributes plus explanation and description. In the graphic database, the function of digital mapping, data management, spatial query and analysis are realized. The example analysed indicates the graphic database is useful for oil and gas resources assessment.