基于网格与GIS的油气资源空间分布与定量评价系统及其应用

Oil and Gas Resources Spatial Distribution and Quantitative Evaluation System Based on the Grids and GIS and Its Application

论述了基于网格与GIS的油气资源空间分布与定量评价系统的建立方法。该系统能够根据离散的钻井数据和等值线数据进行插值分析,以网格单元为基础进行油气资源的计算与评价;可以用GIS来管理空间数据和属性数据,生成并制作特定地层的油气资源量空间分布专题图和油气藏形态模拟图。以四川盆地川东北地区二叠系气源岩的油气资源评价为例,模拟了其生烃史,计算了其累积生气强度、累计生气量和天然气资源量。

This paper has mainly described the establishment of the oil and gas resources spatial distribution and quantitative evaluation system based on the grids and GIS. It can make the interpolation analysis according to the discrete drilling data and the isolines, and carry on the oil and gas resources calculation and assessment based on the grids. Using the GIS to manage the spatial data and attribute data,the system can draw up the oil and gas resources spatial distribution thematic maps of given strata and display the modality of oil and gas reservoir. Finally, the oil and gas resources evaluation of the Permian hydrocarbon source rocks in northeastern Sichuan Basin is taken as an example to illustrate the application of the system in simulating the hydrocarbon generation of the source rocks and calculating the accumulate gas-generation intensity and total gas-generating amount and gas resources.