主要用于稠油热采井蒸汽吞吐、驱替、SAGD工艺，可以实现井筒的高效隔热、多油层的分层注热、水平井的 均匀注热；有效的提高了热采井的注热效果和油层的动用程度。关键的配套工具有隔热 型补偿器、注热封隔器、隔 热型扶正器、分段封隔密封器、均衡注热阀、分层封隔密封器等。

◎ 管柱整体隔热性能达到D级及以上；

◎ 配套的井下工具具有隔热功能；

◎ 配套的隔热油管的接箍具有很好的隔热性能；

◎ 管柱耐温350℃；

◎ 可以进行分层注热；

◎ 水平井均匀注热；

STRING AND KEY TOOLS FOR LAYERED UNIFORM INJECTION WITH HIGH EFFICIENT HEAT INSULATION PERFORMANCE IN HEAVY OIL THERMAL RECOVERY WELLS

INTRODUCTION

These tools are mainly used in CSS, displacement, SAGD process to realize wellbore high insulation, separate layer steam injection and homogeneous heat injection of horizontal well. The tools can also improve the thermal effect and oil formation development of the thermal recovery wells.

FEATURES

◎ Overall heat insulation grade is D or above;

◎ Downhole tools have heat insulation function;

◎ Temperature rating 350℃ ;

◎ Separate injection can be achieved;

◎ Uniform heat injection for horizontal wells can be achieved；