The Study Of Reservoir Porous Media Transport Properties Based On Fractal Theory

In order to improve the recovery of existing oil, understand the geological characteristics of the reservoir, reservoir clarify the dynamic changes of late oilfield exploitation are becoming more and more important. Underground reservoirs are characterized by the space before the reservoir reservoirs and stratigraphic distribution of microscopic pore structure and fluid transport properties of parameters. The fractal theory will bring new research method to oil workers. Since the reservoirs have heterogeneity, different parts of the pore structure of the porous medium scales are different, from micro to macro are likely fractal, but reflect the fractal dimension is not the same characteristics, but different scales affecting level of the reservoir is very different, and therefore there will be problems in the calculation of the scale effect of characterizing the macro parameter.In the existing literature seepage basic formula combining micro and macro studies to obtain the distribution of reservoir fluids, but does not consider the problem that the level of the unit scale. This paper re-derive the formula to get parameters of the unit scale conversion factor to be used in combination with the microscopic characteristics macroscopic parameters to establish a good bridge to achieve any conversion between different scale levels,proven the modified formula was established macroscopic parameters obtained results closer to the measured values. Pore space reservoirs scale effect produced by the simultaneous analysis of the verification process.Based on the corrected formula for the calculation of a rock sample,the influence of microscopic pores of the reservoir rock parameters of reservoir macroscopic transport parameter of flow and permeability variation,distribution and actual reservoir match. This paper studies how to convert between data in different scales,so that the calculation result of the formula is more accurate,in-depth study of reservoir structure to improve oil recovery are extremely important.