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Abstract The paper discusses various approaches for modeling technical operations on multilayer wells. An approximate method for simulation of the multilayer well operation is considered. The essence of the approach lies in the extension of nodal analysis method where transient flow is acting in the formation and the start of production from different layers is not simultaneous. An example of using this approach for modeling unsteady processes occurring after involving into development of new layers is given. The constructed model can be used for incremental production planning, evaluation of interstratal crossflows, as well as candidates selection.
Introduction A large number of wells in West Siberian region are multulayered. Each of the layers has its effective thickness, permeability distribution, porosity, as well as reservoir pressure and other reservoir properties. In this regard, there are difficulties in simulation of the multilayer well operation and identify the optimal parameters of some technical operations in such wells. For the successful modeling of processes occurring in multilayer systems, you should: 1) to solve the problem of unsteady interaction of well with a set of layers, to take into account the consistency of the fluid movement in the borehole and its filtration in each of the layers, 2) take into account the specifics of the technical operations.
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