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南中东一区自投产以来,共出现16口注入困难井,占总井数比例为14.0%,因此该区块的注入困难问题较为突出。本文从南中东一区的实际情况出发,通过运用沉积相带图、井组连通图等静态解释成果,依据产液剖面、吸水剖面、地层压力等各项动态反映,摸清每一个井组的开采状况和生产特点,认真分析总结油水井的变化规律,对影响井组开发效果的特点及成因进行对比分析,深入研究有效的注采井综合调整方法,主要采取压裂、扩射、下调浓度、采油井压裂、扩射、老井代用等措施,进一步改善南中东一区的开发效果。
Since the project was put into operation, a total of 16 injection difficulties occurred in the south-east-central region, accounting for 14.0% of the total number of wells. Therefore, the problem of injection difficulties in this block is prominent. Based on the actual situation in the area of South-East-Middle East, by using the static interpretation results of sedimentary facies map, well group connectivity map and so on, based on the dynamic reflection of production profile, water absorption profile and formation pressure, Mining conditions and production characteristics, carefully analyze and summarize the changes of oil and water wells, the impact of well group development characteristics and causes of comparative analysis, in-depth study of effective injection well comprehensive adjustment methods, the main to fracturing, expansion, down concentration , Oil well fracturing, expansion, the replacement of the old well and other measures to further improve the development of the South-East zone results.