Low Temperature Oxidation Reaction Research On Crude Oil

In order to study the characteristics of crude oil low-temperature oxidation reaction,the low temperature oxidation reaction of light oil,heavy oil,and the four components was carried out under different conditions through the reaction kettle.Reaction change characteristics of oil viscosity,four components and the generated gas,heating effect and other conditions about light oil and heavy oil was concluded after low-temperature oxidation.Trough low-temperature oxidation reaction of single component of different proportions,aromatic and resin could inhibit saturate oxidation reaction.According to the principle of free radical chain reaction,the low temperature oxidation process of light and heavy oil was studied.In order to accurately calculate reaction rate,pre-exponential factor and activation energy by arrhenius equation and mathematical derivation,we study the calculation influence to them about diferent temperature and pressure.Whether the reaction order is zero,the activation energy obtained results through the linear deduction is changeless unless pre-exponential factor and the reaction rate.To study the production of air injection on the oil production effect,the sand filling tube flooding and air injection auxiliary steam huff and puff was carried out.it is concluded that injection of air injection is a huge advantage on the cumulative oil recovery and oil recovery rate and water production rate.With the increase of injection air multiple,the increased effect is remarkable.By CMG STARS in the simulator,the numerical simulation of light oil high-pressure air injection and air injection auxiliary steam huff and puff was carried out,air injection flooding is better than that of waterflood in low permeability reservoir.In addition,air injection auxiliary steam stimulation is better than that of pure steam stimulation.