| In recent year, the coordinate production forecast of oil and gas well is becoming more and more important. This thesis researches method of computing pressure continuity and application on production forecast of that. It takes computation of related parameters as key. It researches computation method of water saturation by reservoir height theory with CMR logging data,and builds models of crude oil viscosity, reservoir pressure and temperature. It computes parameters such as density of crude oil and so on with CMR logging data, and permeability with CMR and general logging data. Also it makes sensibility analysis for parameters that are difficult to be acquired such as skin factor,and ascertains the relationship of between production forecast and skin factor. It researches computation of key parameters such as liquid holdup, friction coefficient, also it researches affecting factors of flow pattern of multiphase flow, and usual division models of multiphase flow. Based on that, it chooses Beggs-Brill Model as the one be used in this thesis. It researches principle of gas lift, pumping, and electric submersible pump that are usual, characters and affecting factors of pressure continuity, and finds transformation between natural flow and artificial extract oil. Finally, it forecasts production of natural flow oil and gas oil base on computation of pressure continuity and inflow production, which provides guide to reality production.
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