喇嘛甸油田进入特高含水开发期已经十余年,2011年水驱综合含水为94.83％.针对水驱含水不断上升、产油量递减加快、无效低效注采循环严重的形势,利用储层精细解剖研究成果,在搞清剩余油分布特征基础上,利用提前完钻的二类油层三次采油加密井网,通过选择性射孔,建立新的驱动体系,对厚油层内部剩余油富集的结构单元强化水驱二次采油,有效改善了水驱开发效果.总结出在特高含水开发期关于射孔、调整及精细注水等方面的水驱二次开发方法,对类似油层水驱挖潜有指导意义.%Lamadian Oilfield at extra high waterflooded period has been developed for more than 10 years, the comprehensive water cut in 2011 for water flooding reached 94. 83%. For the series situations such as gradually increasing water cut, accelerated the decline of oil production and ineffective and low-efficiency injection-production cycles, using the study achievements of the fine reservoir characterization, on the basis of making clear of the remained oil distribution features, with the help of the tertiary recovery well pattern of the previously-drilled second oil reservoirs and the selective perforation, a new driving system is established, thus the developed results of the water flooding for the structural units accumulated and enriched by the remained oil in thick reservoirs and enhanced second water flooding are improved greatly and effectively. The second water flooding methods for perforation selection, adjustment, fine water injection and so on at extra high water cut period are summarized. All these achievements possess a certain guiding significance for the potential tapping of this kind of oil reservoirs.
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