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中文摘要：
地层产液乳化是开采过程中常见的储层伤害类型之一。电潜泵剪切作用有可能造成或加剧产液乳化。产液乳化在流入井筒前产生还是在井筒内造成，判断难度较大。利用多相流连续性方程、动量方程、能量方程，建立考虑剪切作用的井筒多相流动态理论模型。将各相分量代入方程，建立油田产液的井筒多相流动态理论模型。再代入实际生产数据，建立适合油田的数学模型，计算了5口井产液量，与实际产液量相近，表明模型合适。预测该油田5口典型井的原油含水率分别为0、20％、40％、60％、80％时，井深与井内流体压力分布关系。结果表明，将产液提升单位高度消耗的能量，泵前小于泵后，电潜泵加剧了产出液的乳化程度。该研究为较准确地判断是否产液乳化造成储层伤害提供了依据。
英文摘要：
The production fluid emulsification is a usual type of formation damage. Electrical submersible pump （ESP） shear action may result in or intensify production fluid emulsification. It gets more difficult to determine whether the production fluid emulsification is caused before the production fluid flows into wellbore or when it is in the wellbore. Using the continuity equation, momentum equation, energy equation for oil - gas - water multiphase fluid, a dynamic theory model taking shearing into account is established. After substituting the components of each phase, a multi - phase fluid dynamic model is established for oilfield production fluid. Then the actual production fluid data is substituted, so a mathematic model suitable for oilfields is established. The production fluid of 5 wells is calculated, which approaches to the real production fluid. It indicates that the model is appropIiate. The relationship between the well depth and the well fluid pressure distribution is predicted when the water cut of the five typical wells of the oilfield is 0, 20% , 40% , 60% , and 80%. The result shows that the energy consumption before pump is lower than that after pump when enhancing unit well fluid, that is, emulsification of produced fluid is intensified by ESP. It gets easier to determine whether the formation damage is caused by production fluid emulsification.
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