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针对普通稠油油藏H127西块蒸汽吞吐后期开发效果差、水淹严重、停关低效井比例大等问题,在兴Ⅱ3-4油层开展直平组合重力泄水辅助蒸汽驱先导试验。试验中间水平井注汽、两侧水平井采油、周边直井泄水的方式部署。实施后井组开井率和日产油均得到了大幅的提升,为提高稠油水淹油层二次开发[1]采收率探索了一条新途径。
Aiming at the problems of poor development, serious flooding and large proportion of inefficient shut-in wells in the late stage of steam huff and puff in the normal heavy oil reservoir H127, a direct combination of gravity drainage auxiliary steam flooding pilot test was carried out in XingⅡ3-4 oil layer. Experimental middle horizontal well steam injection, horizontal wells on both sides of oil production, the surrounding vertical well drainage way deployment. After the implementation of the well group well open rate and daily oil production have been greatly improved, in order to improve the recovery of heavy oil flooded reservoir [1] exploration to explore a new way.