钻井区块因注水井的停注,造成区块间地层压力变化幅度大、钻关恢复过程中含水上升速度快,钻关影响产油量增多,水驱自然递减影响加大。根据钻井过程中,不同井区、不同井网油层的动静态变化特点,找出影响递减率的主要因素,实施了不同的控制递减方案,达到了控制递减率,取得了很好的效果。 Due to the stoppage of water injection wells in drilling blocks, the pressure of formation formation varies greatly between blocks. The water cut-off speed during drilling and recovery is fast, and the oil production increases due to drilling and shutoff, and the influence of natural decrease of waterflooding increases. According to the characteristics of dynamic and static changes of oil well in different well zones and different well patterns during drilling, the main factors that affect the rate of decline are found, and different control decrement schemes are implemented to achieve the control rate of decline, which achieves good results.