| Along with the production of the water-flood-reservoir entered in the mid-late period; The water cut increasingly heighten, therefore, the scheme of enhance oil recovery starts to be designed and practiced. However, it is very important to recognize the heterogeneity of reservoir. The well-to-well tracer, which it is well known to an effective method to identify the fluid flow direction in the reservoir, also can reflect the character of the heterogeneity in the reservoir. So this method was applied widely in the oil fields.Through the analysis of the interpretation method for the well-to-well tracer, the thesis applies the streamline simulation method to interpret the oil-field recovery data of the well-to-well tracer. At first, the basic theory of the streamline simulation has been studied, Understood the variable: Time-of-Flight, and applies it to convert 2D or 3D saturation equation and concentration equation into 1D streamline equation. On the basis of the pressure field set up the velocity field, the Pollock method has been applied to build the streamline field, calculated the 1D saturation equation or concentration equation. It is also discussed to the flow theory of the well-to-well tracer in detail and the flow character in the five-spot well system in the thesis; The effect factors have been discussed for tracer flow in the reservoir and the well bore, such as adsorption, well system etc. The paper has derivated the one-dimensionai flow equation and the streamline equation, and derivated the 2D, 3D and radial tracer-flow equation.Based on these theories, the paper has developed the two-dimensional one-phase program and two-dimensional two-phase program using VB6 , also apply program to analyze the character of streamline distribution and the tracer concentration curve. At last, the paper has analyzed the well-to-well tracer data from the oil field by the streamline program, and compared it with the result of the ECLIPSE model, obtained the satisfactory result. |
PDF Full Text Request