Abstract: Based on actual field data and a comparison with those obtained from theoretical predictions, this paper gives an evaluation on the development results of the water flooded L-reservoir, Laojunmiao Oil Field. The items discussed include utilization efficiency of the injected water, water-oil displacement efficiency, conformance factor and the ultimate water flooding recovery etc. It is demonstrated that actual value of water utlization efficiency is very close to that predicted from theoretical curves, the water-oil displacement efficiency and the conformance factor are 0.541 and 90% respectively, and the ultimate water flooding recovery way be as high as 48%. Modification on grouping of the development layers, in-fill well drilling modification on the injection pattern and the ratio of the numbers of injection to production wells and the selection of the rationale separate-layer injection and production techniques in the water flooding of L-reservoir are presented and their technical results are discussed.

摘要： 本文应用油田矿场实际资料统计规律与理论计算曲线比较,评价L油藏注水开发效果,即注入水利用率、水驱油效率、水驱波及系数和水驱最终采收率等。认为L油藏注入水利用率实际值与理论计算曲线基本接近,预测最终水驱油效率、水驱波及系数分别为0.541和90%,最终水驱采收率达到48%以上。同时,论述了L油藏注水开发中,在改善开发层系、加密井网,调整注水方式和注采井的比例,以及选择合理的分层注水,排液采油等方面的主要方案调整和技术措施,所取得的开发效果。