The stratified flow model without interphase slip was set up in light of the property that oil-water two-phase flow in high water cut period affects pressure drop in pipeline less than in low water cut period .The homoge-neous disperse flow model was set up on the basis of the theory that oil-water two -phase flow in high water cut period can be treated as one-phase New tonian fluid or non-New tonian fluid in gaining the pressure drop value .In practice ,the pressure drop value gained by this model is similar to the measured value ,w hich proves that this model is fit for field application .Based on the analysis of the impact of sensitive parameters gained by this model such as flow rate ,water content and viscosity on pressure drop ,it is believed that single-well produced fluid volume and water content of produced fluid have greater impact on the pressure drop of single-well oil gathering line than oil phase viscosity does .%现场试验得知 ,陵76井区所辖9口井集输管线油流的流态多为分层混合流 ,只有在油井产液量足够大,含水率超过95% 时才会出现分散流.根据高含水时油水两相流动对管路压降的影响程度比低含水时要小的特点,建立无相间滑差的分层流模型;根据高含水期油水两相流可视为单相牛顿流体或非牛顿流体来求取压降值的理论 ,建立均质分散流模型.实践证明 ,应用该模型所计算的压降值与实测值相近 ,说明所建模型适应现场要求.应用该模型进行流量、含水率、粘度等敏感参数对压降影响的计算,分析认为 ,单井产液量、采出液含水率对单井集油管线压降影响较大 ,油相粘度次之.
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