Study On Sedimentary Microfacies And Remain Oil Of Transitional Zone Reservoir In The Northern Zone Of Daqing Sabei

Daqing,north development zone is located in the most in the northern songliao basin of daqing changyuan area,this paper studied area for Mr Oil-water transition zone of northern north development zone,the district development sal figure putaohua reservoir and two sets of reservoir formation and 5 reservoir group,15 sandstone group,51 sedimentary unit,surface sand body development condition and reservoir physical property difference obvious,as the study area into determining development phase,the remaining oil highly fragmented and measure effect worse year by year,potentialities and increasing difficulty.It is still an urgent problem to apply advanced technical means to widen the potential space of residual oil in the period of extra high water cut.The essay focuses on the study of sedimentary microfacies and distribution rule,at the same time,some technical problems that exist in the analysis of remaining oil research process,and find the breakthrough point,the small scale numerical simulation technology as an important means to improve the precision of remaining oil research,on this basis,the research and control factors of remaining oil,distribution and type,thus the countermeasures for tapping the potential of accurate measures,and finally achieve the goal of oilfield efficient development.In this paper,the fine stratigraphic framework is established through stratigraphic division and comparison,and the well-logging facies model is established on the basis of the analysis of sedimentary facies,sedimentary subfacies and sedimentary microfacies.Under the guidance of logging facies model,carry out the single well facies and section facies and the plane facies analysis,completed the research of sedimentary microfacies in each time unit,and sums up the sedimentary pattern,implements the sand body distribution characteristics of fine features.Combined with dynamic data block development,local grid refinement,plane grid application means of small scale,time scale,completed under the phase 3 D geological modeling and numerical simulation,to improve the simulation accuracy of remaining oil.This basis,the study on remaining oil distribution features,combined with the residual oil control factor analysis results,the model of the remaining oil types and distribution of the final according to different types of remaining oil,take different exploration to improve the development effect,the study indicates that in the transition zone for determining the development phase,to carry out detailed research of sedimentary microfacies,and use the small scale numerical simulation technology,can provide technical support for determiningfine exploration,release the remaining oil potential space effectively,ultimately achieve the goal of oilfield efficient development.