汽驱井组封窜调堵技术

蒸汽吞吐和蒸汽驱是目前稠油开采的主要方法,吸汽剖面不均匀、汽窜是影响蒸汽驱开采稠油的主要问题。汽驱生产时间越长,汽窜干扰现象越严重,窜流通道的形成,使剖面动用程度难以改善。针对新疆克拉玛依油田九区稠油油藏蒸汽驱的实际情况,研制开发了GFD-98高温凝胶复合堵剂,并在几口汽驱井的封窜调堵作业中获得成功。

PROFILE CONTROL TECHNOLOGY FOR STEAM SOAK-ING WELL GROUP

Steam soaking now is the primary method to produce heavy oil. However, there exist two unfavour factors, which are uneven steam injection profile and channeling, to affect the performance of steam soaking. The longer the production histo-ry extends, the more severe the channeling becomes. In suchsituation, it is difficult to enlarge the steam acting range to im-prove heavy oil recovery. In this paper, based on study on the steam soaking situation of Block 9 heavy oil reservoir, Kalamayi Oilfield, a newly developed high temperature GFD-98 gel com-binationhas been applied to several wells to control steam pro-file, which has made a hit.