本文针对造成注汽质量差的原因主要为热敏封隔器密封效果差,补偿器伸缩管无法隔热、热损失较大。引进开发了热补偿注汽封隔器,该封隔器是在热敏金属扩张式封隔器的基础上改进而成的,同时结合了井下补偿器的工作原理,使其在注汽过程中既能密封油套环形空间又能起到补偿的作用。具有坐封时间短,解封迅速可靠和密封效果好的特点。 In this paper, the main reason for the poor quality of steam injection steam seal sealing effect is poor, compensator telescopic tube can not be insulated, heat loss larger. The introduction of the development of the thermal compensation steam injection packer, the packers in the thermal expansion of the metal packer based on the improvement made, combined with the underground compensator works to make it in the steam injection process Can seal the oil ring annular space can play a role in compensation. With a set time is short, the solution quickly and reliably sealed and sealing effect is good.