Application Research On The RS And GIS For Oil And Gas Pipeline Route Selection

At present, the construction of oil and gas pipelines in China have stepped intothe peak situation with numerous projects, hard tasks, and urgent time requirement.The route selection of oil and gas pipelines has a significant effect on program design,construction cost, operation and maintenance. In other words, to a large extent, therationality of the pipeline route selection determines the success of the project.The traditional method on pipeline routine selection was based on manualoperation on paper maps and on site investigation and study. It only has a single datasource. The data has poor time effectiveness, need much processing work and longprocessing period, and has low accuracy. In addition, it is not easy to share. Generally,the traditional pipeline routine selection methods are not satisfied for the currentdemand for rapid construction of the pipeline.To accelerate the decision about the project, reduce costs, and improve thedesign level, the article studies optimal solution of the pipeline route selection by theRemote Sensing (RS) and Geographic Information System (GIS) technology whenthe project locates at a long distance. Especially, it can provide guidance on pipelinesroute selection in the feasibility study of the project.Firstly, the author researches and consults the application of RS and GIS in Oiland gas pipeline projects at home and abroad. And then, according to oil and gaspipeline construction standards and construction procedures in China, the authorproposes that the RS and GIS technology can be used in the planning stage of oil andgas pipelines route selection.Secondly, the author analyzes the main factors which affect the pipelines routeselection. The main factors include the length, the terrain, the land cover, thegeological conditions and the river crossing. In the article, the author makes a furthersubdivision of each factor according to their causes and their implication to thepipelines route selection.Thirdly, under the actual condition of pipeline project, all the impact factors are finally came down to the pipeline construction cost. The author establishes themathematical model on the optimal pipeline route choice, and divides the basicgeological data into multi-scale grid cell. By the features of remote sensing data andGIS data, the author extracts the relevant information and converts them into cost,and finally gets a summary of every data as the total cost.Fourthly, through DEM and Landsat ETM+data, the author analyzes theinformation extraction method of pipeline length, terrain, land cover, earth, rivercrossing, and studies some mathematical models, computational procedures andalgorithms. The author also gives an example for each method.Finally, the author analyzes the case of pipeline route selection in the SecondWes-East Gas Pipeline Project. The conclusion shows that, this method can save thecost of pipeline construction in a large extent.