Production allocation method in numerical simulation for fractured vuggy reservoirs

In fractured vuggy reservoirs, natural completion or acid fracturing completion for open hole well are used. Using multilayer commingled production and injection development, actual production into the wellbore in the whole interval comes from vug or fracture in this part of the reservoir. As boundary conditions of numerical simulation, production borehole is highly related to the accuracy of the simulation. In this paper, according to the characteristics of fractured vuggy reservoir, an improved borehole production allocation method in numerical simulation is put forward. Injection and production profile test data is made full use for production allocation for each layer production precisely. For those wells without production profile data, the production should be allocated according to acid fracturing condition. The allocation method can effectively reduce the number of parameter adjustment of history matching and increase matching efficiency and reliability.