Experimental Study On Low Temperature Oxidation Mechanism By Air-foam Flooding In Jilin Oilfield

In this paper,the low temperature oxidation of light crude oil and the adaptability evaluation of air injection technology in the high water cut reservoir of the 208 block of Jilin oil field are studied by means of the combination of laboratory experiment and CMG reservoir numerical simulation.Crude oil 208 block of Jilin oilfield belongs to light crude oil,static oxidation experiments show that it has a certain ability of oxidation under reservoir conditions,the average oxygen consumption rate is 1.56mL?mL^-1?d^-1,pressure,temperature,formation water,quartz sand,are conducive to the crude oil of low temperature oxidation.After the reaction,the viscosity and density of crude oil increased,the content of saturated and aromatic decreased,and the content of resin and asphaltene increased.The dissolved air capacity of the crude oil in the reservoir condition is 308)³/8)³,and the viscosity reduction effect is better.The results of dynamic oxidation experiments show that the oxidation ability of the crude oil in the process of displacement is strong,and the oxygen content in the produced gas is low.When the displacement is 0.72PV,the oxygen content is 4.2%.According to ARC and TG,the kinetic parameters were obtained from the experiment,the size of the air injection wells of oil reservoir numerical simulation of air injection flooding mechanism that flue gas flooding and thermal effect are the main oil displacement mechanism of low temperature air flooding,and summarizes the applicable conditions of domestic and foreign air injection reservoir,according to the target block the reservoir features concluded the block air injection is feasible.