Sour gases such as hydrogen sulfide and carbon dioxide are produced in heavy oil thermal recovery process in Liaohe oilfield and this problem is prevalent in almost all the thermal recovery blocks, posing risks to oilfield production and environment. Experimental study has been conducted for associated gas reinjection in steam flooding. The results indicate that recycling of the associated gas during heavy oil recovery process can reduce pollutants emission, improve development effect, and is an eco -friendly project.%辽河油田稠油热采开发过程中出现了以硫化氢和二氧化碳为特征的酸性气体,其分布几乎覆盖了所有稠油热采区块,对油田生产环境构成危害.开展了蒸汽驱伴生气回注实验研究.研究表明,在开采过程中把稠油伴生气体进行循环流动,既可以减少污染物排放,又可改善开发效果,是一项变害为利、安全环保生态工程.
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