低渗透油藏复合热载体吞吐效果分析

低渗透油藏的纯烟道气吞吐效果不好,而烟道气和水蒸气组成的复合热载体对开采低渗透油藏具有较好的效果,但复合热载体在吞吐过程中注入能力却低于烟道气。为确定影响复合热载体注入能力的因素,在模拟低渗透油藏条件下,利用填充管岩心模型进行室内试验研究。实验结果表明:复合热载体在人造岩心和天然岩心的采收率高于烟道气,平均每周期分别高出0.39%、0.43%;由于水锁现象,复合热载体在人造岩心吞吐过程中的注入能力与烟道气相比降低了14.59%;复合热载体在天然岩心吞吐中,由于水敏原因,注入能力降低10.22%。

The effect analysis of composite heat carrier throughput in low permeability reservoir

the effective pure flue gas throughput is not well in low permeability reservoirs,while the heat carrier is composed of the flue gas and water vapor with good results exploit low permeability reservoirs,but the composite heat carrier of throughput capacity in injection process is lower than the flue gas, to determine the impact of the composite heat carrier injection capacity of factor,In simulated conditions of low permeability reservoirs,using the fill tube core model in laboratory. The results show that:composite heat carrier in artificial core and natural core of recovery than the flue gas, average every cycle were higher 0.39%, 0.43%, as the water lock phenomenon in artificial core composite heat carrier in injection process throughput capability compared with the flue gas reduces 14.59%, composite heat carrier In the process of throughput in the natural core, as water-sensitive reasons, injection capacity reduction of 10.22%.