Application of separate layer testing in Zhongyuan oilfield

For multilayer commingled water injection well, water injection pressure is varied to detect the changes of pressure and flow of each layer. Parameters such as permeability, skin factor and pressure of individual reservoir are determined by using bedding surface flow convolution method. Oilfield application example indicates that this technique is feasible, the data obtained are reliable, which is effective for dynamically monitoring complex reservoirs.