关键词: 断块油田, 注水井, 调剖剂, 效果, 地层采出程度, 累计注采比, 吸水厚度层数

Abstract: The profile－controlling effects in the three complex fault－block oilfields,Wenmingzhai,Weicheng and Mazhai,are studied by using particle profile－controlling agents and the theory of mathematical statictics.When the incremental coefficient of increasing oil and reducing water after profile controlling is considered as the basis of result evaluation,It is found that the ratio of the value of water absorption thickness/the number of water absorbed formations to the value of the perforating thickness/the number of perforated formations,the starting pressure,the geological recovery percent of reserves and the accumulative injection－production ratio of the water injection wells during the different production periods are the main factors that affect the result of profile controls of water injection wells.The optimum suitable conditions of profile controls are defined to instruct the choices of profile－controlled wells and formations and effect prediction in the future.

Key words: fault-block field, water injection well, profile-controlling agent, formation recovery percent of reserves, accumulative injection-production ratio, water absorption thickness/the number of water-absorbed formations