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杏河区位于杏河油藏中部,属多油层叠合区,从1998年开始通过缩小排距打加密井,因一次加密后井网不完善,补充老井地层能量与延长加密井低含水期矛盾突出,对此,通过加密区提前补水、小排距注水及注采参数双向优化等政策,取得了一定的效果。
Xinghe District is located in the middle part of Xinghe Oil Field. It belongs to a multi-reservoir superimposed area. Since 1998, the well has been closed by narrowing its spacing. Because of the imperfect well pattern after one-time encryption, it complements the old well formation energy and prolongs the low water cut period Contradictions are outstanding. In this regard, we have achieved some results through such policies as pre-charging in the encrypted area, water injection at a small distance, bidirectional optimization of injection and production parameters.