应用物理模拟实验校正埕岛油田密闭取心井油水饱和度

Using physical simulation to correct saturation for sealed coring of Chengdao Oilfield

为及时准确地掌握埕岛油田馆陶组上段油层开发中的水淹状况和动用情况,本文采用不密闭率校正、覆压孔隙校正以及降压脱气校正的方法,对该区投产至今唯一的密闭取心井A井进行了实测油水饱和度的异常成因分析和校正。校正后的含油饱和度为51.9%,含水饱和度的平均校正量为11.2%,表明A井区目前处于中含水阶段。结合驱油效率、物理模拟实验和岩心观察等资料,综合评价A井区馆陶组上段油层整体以弱见水、见水状态为主,剩余油富集。

In order to command reservoir flooded condition and producing reserves of the Upper Guantao formation of Chengdao Oilfield,using leakiness correction,overburden pressure porosity correction and depressurizing and degassing depression correction corrected water and oil saturation and analyses the reason of unique sealed coring well since the block put into production.The current oil saturation is 51.9% and the water saturation correction is 11.2%.A block is medium water cut stage.This block is in weak breakthrough and breakthrough phase bonding displacement efficiency,core and so on analyses.