注入温度对复合热载体吞吐效果影响

Effect of Injection Temperature on the Composite Heat Carrier Huff and Puff

针对大庆萨北过渡带,在模拟实际油藏条件下开展复合热载体吞吐室内试验研究。结果表明:该油田进行复合热载体吞吐可取得较好的开采效果。复合热载体吞吐中,随着注入温度增加,采收率、含水率增加,生产油气比降低。第3周期开始当温度达到280℃后,采收率开始下降;随着吞吐周期增加,采收率、含水率增加,生产油气比变化不大。三个周期后采收率、含水率降低,生产气油比增加。通过不同吞吐温度、五个周期的吞吐效果比较,复合热载体注入280℃的吞吐效果比较好,吞吐3周期。

In Daqing Sabei transitional zone,research on test of composite heat carrier huff and puff in simulation of the actual reservoir conditions.The results show that:the field of composite heat carrier through put can achieve good mining effect.Composite heat carrier stimulation,with the increase of injection temperature,recovery,the increase of water content,the producing gas oil ratio decrease.Third cycle begins when the temperature reached280 ℃,the recovery rate began to decline;with the increase in throughput cycle,recovery,the increase of water content,the producing gas oil ratio changed little.After three cycles of recovery,reduce water content,produced gas oil ratio increases.Through the different soaking temperature,five cycles of stimulation effect comparison,composite hot carrier injection at 280 ℃ stimulation effect is good,3 cycle throughput.