含有大尺度裂缝、溶洞的缝洞型油藏的数值试井模型

建立了含有大尺度裂缝、溶洞的缝洞型油藏的数值试井模型，模型可准确表征溶洞和裂缝本身的形状和大小；用平板模型单独描述裂缝的渗透性，解决了多重介质缝洞型油藏中介质“重数”非均质性的问题；计算了溶洞通过裂缝与井连通模型的试井响应，分析了裂缝长度、宽度、溶洞大小、溶洞与裂缝接触面积等因素对试井响应的影响，使从试井资料中获得近井区大尺度裂缝、溶洞的分布情况成为可能。

A Numerical Well Testing Model for A Fractured and Vuggy Reservoirs Containing Big Fractures and Vugs

A numerical well testing model for fractured vuggy reservoirs containing big fractures and vugs was presented. The model was used to characterize the shape and size of vugs and fractures exactly and describe the permeability of fractures with planar model. It solved the heterogeneity problem of number of medium repetition in naturally fractured vuggy reservoirs. Several pressure responses of model of vug connecting with well through fracture are calculated and the influence of fracture length, aperture, size of vug and contact area of fracture and vug are analyzed by means of these responses, thus it is possible to obtain the distribution of big fractures and vugs near wellbore from well testing data.