| According to the existing problems in the development of Hejian oilfield and production,the area of Hejian Dongying formation reservoir development geology,water flooding characteristics and the distribution of remaining oil,the deep flooding effect evaluation,deep flooding,flooding method and system optimization research,risk object plan and dynamic detection etc.a systematic study.The reservoir re based 3D seismic fine interpretation,the geological characteristics and development contradiction as the research object,in order to improve the efficiency of oilfield development,improving the development efficiency of flooding research work for the purpose of carrying out the geological characteristics and deep.1,further understanding of reservoir geology development characteristics,through 3D seismic fine interpretation and stratigraphic correlation,the single sand body,reservoir sand body and connected graph;structure of the formation is explained,focusing on the reservoir structure,micro structure and the influence of local faults and cracks on the development effect and water movement;the sedimentary characteristics of the reservoir is studied on the sand bodies formed in different sedimentary environments have different reservoir characteristics of oil and gas migration and accumulation and development have different effects;summarizes the ground formation and physical properties of crude oil,formation water salinity,cation concentration two.2,water flooding development characteristics and residual oil distribution law,analysis and summary of the characteristics of oil and water wells,water content change law,analysis of the formation pressure change.Through the numerical simulation of the distribution of remaining oil in reservoir after water flooding,clearly further tapping the potential of residual oil in the area and horizon.3,the deep flooding effect evaluation,well group effect on the pre adjustment analysis of flooding,injected from the injection system,and flooding wells injection pressure changes,production and injection profile changes,oil wells features many aspects such as evaluation of the flooding effect,adaptability analysis of flooding on reservoir.4,deep profile,based on the potential of remaining oil,chose the suitable flooding in well group;distribution of sand body stability,water flooding significantly;at the same time to carry out indoor system evaluation and optimization,and according to the production status of injection wells group selection of appropriate flooding type to design single wellinjection,through numerical simulation research on water flooding history and on the flooding injection parameter optimization,finally forecast the effect of technical and economic evaluation of the program.In this paper,the comparison of fine strata in Dongying reservoir is carried out,and the single sand body,oil sand body and connected map are compiled,which provides the basis for the further development of the system.It is feasible to use the deep flood control technology to further improve the development effect when the Dongying reservoir is entering the middle and late oil well in the middle and late period.The system of suitable reservoirs was selected by blind evaluation of indoor system.Completed the deep transfer drive program preparation,and the effect of prediction,to achieve better technical and economic benefits.In this paper,although the development characteristics of Dongying Formation in Hejian Oilfield are analyzed in depth and the targeted deep flood control scheme is developed,the contingency plan is compiled,but it is still necessary to closely track and adjust the site during the implementation process to ensure the final implementation effect. |
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