A design method of optimising compatibility of polymer flooding system with reservoir
by Hualong Liu; Yiqiang Li; Junxin Gao; Xiaobin Nie; Yishan Liu
International Journal of Oil, Gas and Coal Technology (IJOGCT), Vol. 13, No. 2, 2016

Abstract: Based on theory research and experimental studies, a design method of optimising the compatibility between hydrodynamic characteristic size of polymer and reservoir under the pressure gradient of formation displacement has been proposed. Then, the matching relation plate between polymer and reservoir was obtained by defining reference standard of the compatibility between chemical system and reservoir. For the purpose of this study block, with converting formation velocity into 0.3 m/d as the flow performance reference standard, average pore throat radius is determined the core size is more than 6.6 times of the polymer system hydrodynamics characteristics, as the compatibility of polymer system and reservoir boundaries. By explaining the phenomena why some oil displacement system was easily injected but difficult to flow in formation, accurately provided an important basis and technical support for selecting the appropriate polymer. The research considered the pressure gradient difference between the near wellbore and deep formation. [Received: November 13, 2014; Accepted: July 20, 2015]

Online publication date: Fri, 02-Sep-2016

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