提高蒸汽吞吐效果配套技术研究

随着蒸汽吞吐开采时间的增长,稠油开发过程中暴露出了诸多的矛盾,在某种程度上已制约稠油采收率的提高。针对上述问题,辽河油田对提高蒸汽吞吐效果配套技术进行攻关,形成系列配套技术。以提高蒸汽吞吐效果整体配套技术为龙头,简要介绍了优选参数提高吞吐效果研究、高温暂堵调剖技术、分层配注汽工艺技术、化学添加剂改善吞吐效果、空心杆泵举升应用研究等5项配套技术及在4个区块的应用情况,该系列配套技术为辽河油田高轮次蒸汽吞吐井开采、最终提高采收率起到了积极的作用。

RESEARCH OF MATCHING TECHNOLOGY FOR IMPROVING THE STEAM SOAKING EFFECT

As time goes by, many problems have been exposed during heavy oil recovery with huff and puff technology. These problems have been tackled successfully in Liaohe Oilfield through hard study and a series of matching technology for improving the huff and puff effect has been developed. This paper briefly introduces the application results in 4 blocks of the 5 matching technologies: research of improving huff and puff effect through optimizing parameters; profile control by temporarily blocking at high temperature; selective injection of steam into individual zones; improving huff and puff effect with chemical additives; and application research of lift with hollow rod pump. These technologies have played an active part for improving the ultimate oil recovery of heavy oil in Liaohe Oilfield.