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曙一区杜84块兴Ⅰ组2004年整体实施水平井开发,随着开发的不断深入,井间汽窜问题日趋严重,随着吞吐轮次的增加油井中汽窜通道不断形成,导致井间汽窜的进一步加剧,逐步暴露出一些开发矛盾:吞吐周期油汽比下降,井间干扰严重,地下存水增多,水平段动用不均,措施效果变差等问题,严重制约油井的吞吐效果。为改善兴Ⅰ组水平井开发效果,实施组合注汽,统一吞吐生产,逐步探索出了超稠油油藏的有效注汽方式。
Shuguang District Du 84 Block Xing Group 2004, the overall implementation of horizontal well development, with the deepening of development, cross-well steam channeling problem is becoming more serious, with the increase of throughput rounds of steam channeling channels continue to form, resulting in inter-well Steam further escalation, and gradually exposed some of the development of contradictions: the throughput cycle decline in oil-steam ratio, cross-well interference, increased underground storage, uneven horizontal section of the use of measures to reduce the effectiveness of such problems seriously hampered the throughput of the well. In order to improve the development effect of horizontal wells in Group Ⅰ, a combination of steam injection and unified throughput production has been explored to effectively explore the effective steam injection method for ultra-heavy oil reservoirs.