带凝析气顶油藏气顶油环协同开发技术政策研究

让纳若尔油田A南油藏带较大凝析气顶,主要依靠气顶膨胀能量开采油环,针对目前油井气窜,油气资源损失严重等问题,考虑合理开采气顶,并实现油气协同开发,运用油藏数值模拟方法进行了相关的开发技术政策研究。结果表明:气顶最佳的投产时机为2013年,合理的采气速度为4%～5%。将油藏的日注入总量定在约3750 m3/d,屏障注水比例和面积注水比例为8:2时,既保证了气顶气和凝析油的合理开采,还能充分利用气顶能量(屏障注水井的外围气顶气)驱油,同时最大限度提高注入水利用率。

RESEACH ON SIMULTANEOUS DEVELOPEMNT OF OIL AND GAS FOR RESERVOIR WITH CONDENSATE GAS-CAP

The reservoir of A south in Zanarol Oilfield with a big condensate gas cap is developed mainly by using of the gas cap expansion.In the light of the problem at presents including gas channeling,the great lost of oil.etc,exploiting gas cap reasonably is considered to aim at exploiting oil and gas simultaneously.The relative development technique policies are argued by numerical simulation method.The results show that the best time for developing gas cap is the year of 2013,the reasonable gas production rate is 4%～5%.When the total injection for the reservoir is about 3750 m3/d and the flooding ratio of gas cap to oil rim is 8:2,gas and condensate oil are developed reasonably,and also oil can be exploited by the gas cap expansion(the gas cap around the barrier wells),at the same time the water flooding can act as efficiently as possible.