Research on reasonable injection-production ratio of water flooding in the high water cut stage of Lamadian oil field

摘要

Lamadian oilfield has developed since the year 1973, which has passed a number of large-scale adjustment. It has come multiple sets of layers and sets of well pattern development pattern, injection-production relationship is complex and ineffective circulation. Therefore, It is necessary to study the reasonable injection-production ratio of water flooding in ultra high water cut stage. Under the premise of ensuring the layer energy, increase the utilization rate of water injection. In this paper, the material balance method is selected according to the actual development characteristics of oil field, The relationship between the liquid yield, water injection quantity and formation pressure is studied, to make clear the scale of reasonable production, calculation and reasonable prediction of injection production ratio, to provide the basis for the planning and regulation of water flooding in oil field.