Thermal recovery technique has been a major way of enhancing heavy oil recovery for a long time. Heavy oil reservoirs have low water flooding recovery and some ( such as thiu, deep or heat sensitive reservoirs) are unsuitable for thermal recovery, therefore the technology of heavy oil chemical flooding has been developed on the basis of light oil chemical flooding. It has been found through researches in recent years that heavy oil recovery can be greatly enhanced by combining thermal recovery with chemical flooding techniques. Based on investigation of enormous related literatures, this paper reviews the research progress on chemical flooding and thermochemical flooding, analyzes the mechanism of enhanced heavy oil recovery and existing problems, and believes that thermochemical flooding with horizontal well will be an important technology for future heavy oil recovery.%在稠油开采过程中,热力采油法一直是提高稠油采收率的主要方式.针对稠油油藏水驱采收率低及部分油层(如部分薄层、深层、热敏层等)不适宜于热采的特点,在稀油化学驱技术的基础上发展了稠油化学驱技术.近年来研究发现,将稠油热采和稠油化学驱技术相结合使用,可大大提高稠油采收率.在调研大量相关文献的基础上,综述了稠油化学驱以及稠油热(蒸汽)-化学复合采油技术的研究进展,分析了其提高稠油采收率的作用机理和存在的问题,认为热-化学水平井复合采油技术是今后稠油开采的一项重要技术.
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