Pressure maintenance system in mature oil fields plays very important role and increase in field development efficiency is impossible without increase in waterflooding efficiency. Complex waterflood management consists of both organization and technological methods.

Suggested to use waterflooding analysis based on fileld development patterns, taking into account geological structure, instead of development blocks, that will help to make more detailed and reliable analysis of voidagecompensation. Second suggested method is to use streamlines. As technological metod it is suggested to use technology of discrete injection, main idea of which in changing working regime of injection wells from continious to discrete and in organization of the whole waterflood system in cyclic regime. Pilot sector was chosen, assessment of suggested methods and calculation of possible effect was made, which gave positive economic effect.

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