Foundation of stable production of low permeability reservoir, in Bonan Oilfield, is undermined by incompletion of injection-productionpattern.
渤南油田低渗透油藏注采井网二次不完善，削弱了油田稳产基础。
2
Depending on sets of polytechnic methods and completed injection-productionpattern, the oil-drive controlling reserve is increased which to enhance recovery of district and block.
依靠多元配套技术，完善注采井网，提高驱油控制储量，从而提高区块采收率。
3
Different flooding pattern and different injectionproduction ratio are used for different reservoirs to maintain the reservoir at a reasonable level.