低渗轻质油藏注空气低温氧化概述

Low-permeability reservoir of light overview of low-temperature oxidation air injection

低渗轻质油藏注空气提高采收率在国内外已进行了许多实验。实验证明，与传统的重油注空气开采过程中发生火烧油层不同，在轻质油藏注空气后，原油与空气中氧气接触发生的是低温氧化反应。目前国内外在此方面的研究工作进行得比较少，对此本文论述了注空气低温氧化反应的基本原理、国内外在该方面所做的室内实验研究、低渗轻质油藏注空气所面临的问题和低渗轻质油藏高压注空气提高采收率的前景分析。

The injeetion of air to low-permeahility light oil reservoirs for enhancing oil recovery has been experimented for many times at home and abruad. Experimentation proves that, being different from in-situ combustion in the process of traditional injection of air into heavy oil recovery, it is an oxidation reaction at low temperature happened in contacts of crude oil and oxygen in air after injection of air into light oil reservoirs. Presently, few researches have been made at home and abroad on such issue. In this paper, basic principles of low temperature oxidation reaction when air injected, domestic antt international tests and researches on such issue, problems in the injection of air into low-permeability light oil reservoirs and prospect analysis of injecting air to low-permeability light oil reservoirs for enhancing oil recovery.