Polymer Injection Seepage Law Studies, Well Test Analysis

For reservoir of Newtonian fluid, nowadays there has been being quite sophisticated well test theory and software. However, after injecting polymer, the flow of polymer through porous media is non-newtonian flow. For well test of non-newtonian fluid , scholars inland and abroad has made a lot of study and acquired lots of results, but these results still can't solve well the practical problems on engineering because of the complexity of the permeability process, so it requires people to make deeper study. Well test of the polymer flooding require people to found a set of well test theories and softwares for non-newtonian fluid of injecting polymer well which are different from Newtonian fluid , but more complicated and reliable.This paper carried out extensive investigation to the literatures inland and abroad on well test of non-newtonian fluid. On the basis of the study fruits made by predecessors the paper made systemic studies on the permeability disciplinarian and well test analysis means of the non-Newtonian power-law fluid in reservoir. Aim at the drawbacks of the present models, on the basis of intensive comprehension toward permeability mechanism, the paper began with elementary principles, making strict deduction to equations, founded well test models of non-newtonian power-law fluid which are nearer to actual reservoir conditions, working out the solutions of these modles , plotting typical curves on the particular coordinates system and analyzing the physical permeability mechanism. Finally, this paper present a method for the reservoir of non-newtonian fluid for injecting-polymer well , to which is injected. The innovations of this paper are as following:â‘  On the basis of clearly know the character of flow, the paper began with elementary principles, via strict deduction to equations(See Appendix A), founding the dual media model for non-newtonian fluid ,working out the solutions under three kind of boundary conditions and plotting typical curves.â‘¡ Founding two-region composite reservoir model of the non-...