温五南夹片注水效果评价

Evaluation of Affusion Effect in South Wenwu Area

温五南夹片生产效果和注水效果都比较差,目前采油速度低,采出程度低。本专题研究表明,该区块水驱控制程度比较低,水驱动用程度低,上油组目前尚有73.3%的含油区域未见效,水驱采收率比较低,为27%,注水利用率低,有效注采比低。造成以上问题的主要原因是:断层多、断块复杂,砂体物性差、连片性差,目前井网不适应温五南夹片的地质条件,注采结构不合理。针对该区块的具体问题,提出了钻井原则以及应完善井网、调整注采结构等具体技术对策。

The production and injection effect are not good in South Wenwu area where exploitation rate and degree are lower.The study of this subject shows that control degree and producing degree of water flooding are lower,73.3% of oil-bearing area is situated in non-water-flooding area,the recovery ratio of water flooding is only 27%,and affusion utilizing ratio and effective injection production ratio are low.The main reasons of faults are :①excessive and complicated fault block;②bad sand quality;③actual well pattern not adaptable to geological condition in Wenwu south area;④inconsequential structure of injection and production.Next technology countermeasures are put forward which include drilling principia,perfecting well disposal and adjusting structure of injection and production.