Study On Oil And Gas Exploration Decision Support Assisted By GIS

Geographic information system (GIS), a software system processing spatial information from applying viewpoint, is a very important component of geomatics and early focused on data management, querying, and displaying of mapped data. With the gradual development and maturation of GIS theory and technology, more and more GIS users have been attracted to its function of processing and spatial analysis of these data, its application also rapidly expanded to every aspect of social life. Like other resource and environmental disciplines, research objects of oil and gas exploration are inherently spatial. The procedure of data processing is particularly complex because it's necessary to simultaneously process the subsurface precise spatial location information of what is being processed and its related attribute information.. As one of critical work of oil and gas exploration, the central task of oil and gas exploration decision is optimum seeking favorable exploration target area, which concerned with multi-elements synthetically study related to spatial location. For many years, oil and gas explorers manually or compute-aided drafted various thematic maps that served to solve association the spatial location of what is being processed with its related attributes. GIS has the predominance of location-based multi-attribute processing and spatial analysis. The combination of GIS with oil and gas exploration makes visualization and intelligentization of oil and gas exploration decision procedure easy and rapid.This paper put the emphases on expanding spatial analysis function of common software platform, so as to meet the demands of thematic research and analysis in oil and gas exploration.In this dissertation, basic approaches and solution schemes of oil and gas exploration decision based on GIS are deeply discussed. Mathematic modeling methods of several key problems in oil and gas exploration decision support are systematically researched. Conceptual model, mathematic model and implementation flow of basin palaeo-tectonic analysis, reservoir comprehensive assessment and oil and gas migration pathways simulation based on GIS are constructed. A assistant oil and gas exploration decision support application system is designed and developed using the basic GIS platform-SuperMap Objects. Making use of the functionality modules provided by this system, the GIS-aided decision analysis of optimum seeking favorable natural gas exploration target area are made in deep buried strata, northern Songliao basin. The integration and amalgamation of GIS with expert knowledge in the field of oil and gas exploration were preliminary realized, which greatly promoted GIS application in oil and gas exploration from simple data management, query and display toward deeply geological analysis.The core function modules for which GIS is particularly valuable are data organization, visualization and search of spatial data, combining and overlaying data layers, analyzing spatial relationships, and decision support. GIS acts as a "manager" and "analyst" in oil and gas exploration, which not only can manage mega-data, but also can assist oil and gas exploration decision support by acquiring related data from GIS database to make various complicated thematic analysis. In the lightof each issue in oil and gas exploration decision, this dissertation puts forward GIS-assisted oil and gas exploration multi-way solutions which include synthetically applying spatial analysis methods of GIS, directly combining mathematic modeling methods in the field of oil and gas exploration with GIS, and components constructing for solving the issues of oil and gas exploration decision in GIS. Application model of GIS-assisted oil and gas exploration decision is a process from understanding, definition, decomposing, and expression to issues of oil and gas exploration decision with the viewpoint of oil and gas exploration research to GIS-based understanding, definition and expression, then to simulation and implementation based on GIS, which is the foundation and fr...