Reservoir dynamic control in block 6A+B of Chengdao Oilfield

Chengdao offshore oilfield is a multi-layers reservoir with strong heterogeneity of uneven physical properties on the vertical and horizontal direction. The technology of separated layer water-flooding was used for development. However, this technology couldn't control water flooding in the whole reservoir. To solve these issues such as a low production velocity and water cut increasing rapidly, a new optimal reservoir dynamic control method was proposed. It regarded reservoir as a complex dynamic system. The optimal objective was to maximize net present value of production. Through solving the optimization model of reservoir development and production, real-time control parameters of input and output for reservoir were determined and the optimal production schedule was obtained. Typical block 6A+B of Chengdao Oilfield was analyzed by the new method. The results show that the optimal production scheme agrees well with the demand of actual field.