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方法 在分析总结千２２块莲花油藏蒸汽吞吐开采及近期转注水井组开发动态的基础上，采用油藏数值模拟方法，以 ６３－４４７井组（９ ０井）为模拟研究区，就影响油藏注水开发效果的注水指标、地层压力保持水平、注采井网、注水方式以及注水温度等因素进行数值模拟研究。目的优化注水参数，改善水驱效果。结果在综合评价 ２０个不同模拟方案的基础上，提出了最佳注水方案；即采用五点井网，以１．２的注采比恢复地层压力至６．０ＭＰａ后保持压力开采，采用５０℃水周期注水开发；在条件允许的前提下，含水率小于９５％时可采用１００℃热水驱，预计最终可提高采收率１０％。结论本研究结果对改善千２２块莲花油藏注水开发效果具有重要意义，对我国其它普通稠油油藏的注水开发也具有一定的参考价值。
Methods Based on the analysis of steam huff and puff in Qianlian22 lotus reservoirs and the recent development of waterflooding wells, the reservoir numerical simulation method was used to simulate the oilfields affected by oil in Well 63-447 (90 wells) The water flooding index, strata pressure holding level, injection and production well pattern, water injection method and water injection temperature were used to carry out numerical simulation. Objective To optimize waterflooding parameters and improve waterflooding effect. Results Based on the comprehensive evaluation of 20 different simulation schemes, the best water injection scheme was put forward; that is, the five-well pattern was used to recover the formation pressure to 6.0 MPa with the injection-production ratio of 1.2 and maintained at a pressure of 50 ℃ Water cycle water development; conditions permitting, the water content of less than 95% can be 100 ℃ hot water flooding, is expected to eventually increase oil recovery 10%. Conclusions The results of this study are of great significance for improving the waterflood development effect of the Qianl22 lotus reservoir and also have certain reference value for water injection development of other common heavy oil reservoirs in China.