Research and Field Application of Water-Coning Control With Production-Balanced Method in Bottomwater Reservoir

摘要

Water coning is the most threaten to the oil production in the bottom water reservoir. The formation water will go far faster than oil, as a result, some oil wells with massive productivity could be killed by the high water cut and the utilization of natural driving force is reduced to an unacceptable level. A balanced production adjusting method which based on the well controled reserves is presented in this paper. This method is combined with the uneven factor of utilization to natural energy, the uneven factor of oil recovery rate and the uneven factor of drawdown rate. It will be used to guide the production control through the drawdown, oil recovery rate and reservoir energy depletion to make the recovery balanced and the WOC balanced. It is applicable and reasonable proved by the field reservoir simulation and the WOC can be balanced and the production can be enhanced.