Displacement Mechanisms Of Air Injection And Accelerated Oxidation Technology In Low Permeability Thin Reservoirs

In recent years,with the low permeability thin oil reservoir reserves increasing,the air injection drives more and more attention.This paper conducts feasibility analysis of air injection,mechanism research of air foam injection and low-temperature oxidation accelerated experiments with catalyst,and it is helpful to the feasibilityand safety by air injection.This article researched lots of oil field tests domestic and abroad,,and summarized the field examples and reservoir parameters,at the same time analyzed the feasibility of different forms of air injection in low-permeability thin oil reservoirs,then put forward a set of reference schemes on different forms of air injection in low-permeability thin oil reservoirs in terms of different reservoir parameters and fluid parameters.Then using STARS module of CMG establishes air foam flooding numerical simulation model to study the influence factors of air foam injection.Furtherlow-temperature oxidation experiments were carried onusing Chang Qing thin oil to calculate the kinetic parameters and analyzed the thin oil air injection by ignition can sustained combustion criteria,and thenforecasted the success rate of ignition in thin oil fire flooding based on the theory of activation center.Finally,the accelerated oxidation tests with additives were conducted in order to better ensure the oil oxidation and improve the rate of consumption of oxygen at low temperatures.Then classifying additive selection according to the mechanism of action,and get the best dosage of ferrocene additive through the experiment,and then analyzed the effect of ferrocene additive experiment through change temperature and pressure.