Study On Development Regime Transformation Of LiuBei Neogene Reservoir

LiuBei neogene reservoir is an edge water reservoir,and it is now in the late stages of development since 1987.The reservoir energy is sufficient,and has been developed by natural energy ever since,with a typical characteristic of the edge water reservoir.Facing a high water cut,production fell,remaining oil distribution complex,difficulties of stable production and other issues,the reservoir is now an urgent need to change the development regime to make adjustments in order to achieve the purpose of improving development effectiveness.Basing on the typical geological,development and seepage characteristics of edge water reservoir,for the Lu 6 fault block reservoir of the LiuBei neogene reservoir,this article evaluate the development effect of natural water drive reservoir from the situation of natural water drive,the decline of oil reservoir and natural energy.Respectively from the development status,reservoir energy and reservoir production dynamic aspects,this article analyze the necessity and feasibility of the transformation of development mode for the Lu 6 fault block reservoir.By means of numerical simulation,basing on the Lu 6 fault block reservoir,the mechanism model of edge water reservoir is established,and the reasonable development technology policy of edge water reservoir is studied.Through fine reservoir geological modeling and production history matching,study the regularity of Lu 6 fault block reservoir remaining oil using numerical simulation methods.On the basis of the research on the development of technology policy,further research on the development and adjustment of the reservoir has been done.Through the above research,this article have further increase on the sweep coefficient and fundamentally improve the development of oil field natural water flooding effect to provide technical support for efficient development of the LiuBei neogene reservoir.