Study6Reservoir Water Flooding Well118District Yongning Oilfield

In this paper, combined with the characteristics of Yongning Oilfield——lowpermeability reservoir, starting from the geological characteristics, reservoir microscopiccharacteristics and seepage characteristics, in connection with the problems of Chang6reservoir in118well area, such as reservoir the terrible physical property, the low naturaldeliverability of oil wells, the shortage of natural energy, the low recovery rate, concluding thefine research of reservoir geological as the core, using established reservoir engineeringmethods, to find out the sedimentary facies, the fluid flow characteristics and cracksdistribution of objective formation, grasped the relationship between the formation energy anddrive mode, and predicted.the pressure level and distribution.On this basis, through the theoretical and actual comparison, urgently need to improve thenetwork of injection and production well of Chang6reservoir for controling the favorable oilarea. According to the existing well pattern, combined with the demonstration result of wellpattern and well spacing, proposed the targeted scheme of water flooding development.Deployment options refer to the inverted nine-spot rhombus pattern,8water wells,71oilwells and8detailed exploratory wells. Through the improvement of injection and productionwell pattern, improving the low producing degree currently, easing the conflict of the drop inthe yield and pressure and the fast water cut rising, established theory and technology forYongning oilfield with low permeability in the late period of water flooding development,ensured the development effect and enhancing oil recovery of Chang6reservoir.Finally, to evaluate the economic feasibility of water flooding program, andrecommended strengthening of new technology and new technology, the implementation ofthe project management and production management in the project implementation process, toimprove the overall benefits of the project. it is the certain model significance for similarreservoir developed by water flooding.