Abstract
In the study area, the chemical flooding type II oil layer and the water flooding type III oil layer exhibited alternating distribution in the horizon. The recovery factor during the chemical flooding stage was relatively low, at 7.44%, and had the potential for mining. Subsequent water flooding phases cannot use conventional potential tapping methods. It is necessary to further explore new targeted potential tapping methods and explore new ways for more cost-effective development. This study makes full use of dynamic data, fine reservoir description data and numerical modeling data to identify the remaining oil in the subsequent waterflooding stage, through coordinated adjustment of well patterns in the second and third types of oil layers, using unblocking, periodic production, reduced-speed oil production, and rotation Use wells and other methods to comprehensively tap potential and tap remaining oil.
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