某区块油藏开发动态及注水开发可行性研究

Development Dynamic State of a Block Reservoir and Study on the Feasibility of Water Injection Development

通过注水井向油层注水补充能量,保持油层压力,是目前油田经常采用的一项重要的开发措施[1]。本文叙述了某区块油藏的开发动态,对注水开发的可行性进行了分析,并用经验公式法、驱油效率法和井网密度法3种方式对注水开发后最终采收率预测:依靠自然能量开发,采收率仅为10%,而注水补充能量开发,最终采收率为23%,采收率提高1.3倍,具有良好的经济效益。

To inject water in reservoirs to add energy and keep oil pressure via water injection well is an important development measures.In this article,development dynamic state of a block reservoir was introduced,the possibility of water injection development was analyzed,and then ultimate recovery of water injection development was predicted by experience and formula method,oil displacement efficiency method and well spacing density method.The results show that recovery rate of natural energy development is only 10%,and ultimate recovery of the water injection energy development is 23%,so the water injection development has good economic efficiency.