The Fractal Description Of Reservoir's Spatial Distribution Of Complex Oil-Gas Pools

The characteristics of complex Oil-Gas pools in Western Sichuan Basin is heterogeneity. In view of this characteristics, this thesis has made an extensive and deep study about the frontier project of field exploration and development for low-permeability reservoir. Using characteristics of reservoir description ,1 describe reservoir heterogeneity and reserves by some multiparameter, multimethod descriptions. In the application non-linear science ,the fractal method has carried on the key description to the low permeability reservoir, I take the reservoir natural parameter description as the method, take the crosswise forecast as the goal, take mathematics and the computer as the tool, The thesis has applied a series of new technologies, the new method and the new mentality, thoroughly the reservoir parameter and the reserves description, obtained the following main results:1) The geological question is the complex non-linear problem, The Fractal method Provide smore information from the brand-new angle for the oil gas exploration, the development. This article studies the complex oil gas pool by the Fractal method, carries on the description to the heterogeneity of reservoir as well as the reserves. In order to provides the policy-making support for exploring and the development plan, this is the traditional method does not have.2) To the parameter of reservoir forecast and the description, the tradition linear interpolation has one kind of smooth role, it coveres the authenticity of the parameter change, the limited sample situation, the application of the Fractal interpolation theory obtains the good effects.3) The Fractal Interpolation Surface of the heterogenous characterestics of the reservoir, the dimension is between 2 and 3.The research results indicated that, D is bigger, the surface fluctuation is more intenser, the heterogeneity of research object is higher; D is smaller, the surface is smoothlesser, the heterogeneity of research object is lower. D can describe the lever of heterogeneity of reservoir.4) The paper use the Fractal method to calculate the reserves of the oil-gas pool .It can overcome the smooth effect by using the mean value, obtain the actually parameters. This methods has many merits. It can enhance the precision of the calculation.5) The technology has merits in international. The established model can hold the essential characteristics of the Reservoir Description, both can reflect the heterogeneity. The model has the stronger forecast ability, it can forecast the entire area reservoir through small data. This technology have the obvious economic efficiency and the higher promotion application value in the oil-gas fields.