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针对油气集输管线中气液两相团状流的流动机理和特点，将每一段塞单元划分为带液层的气塞区和液塞区两个区域。对气塞区，采用分流模型建立了其水力计算模型；对液塞区，采用均流模型建立了其水力计算模型，并用实验数据关联了液塞区气液混合物的沿程阻力系数与雷诺数之间的相关式。通过气塞区和液塞区水力计算模型的结合，给出了团状流的水力计算模型。经大庆油田１２井次实际生产数据检验，该水力计算模型所预测的压力梯度比传统的按流动状态所预测的压力梯度更符合实际值。
Aiming at the flow mechanism and characteristics of gas-liquid two-phase slug flow in oil and gas pipelines, each plug unit is divided into two areas: gas plug area and liquid plug area with liquid layer. For the gas plugging area, the hydraulic calculation model is established by using the shunting model. The hydraulic calculation model is established for the liquid plugging area by using the current sharing model. The experimental data is used to correlate the drag coefficient and the Reynolds number The correlation between. Through the combination of the hydraulic calculation model of gas plug area and liquid plug area, the hydraulic calculation model of slug flow is given. According to the actual production data of 12 wells in Daqing Oilfield, the pressure gradient predicted by the hydraulic calculation model is more accurate than the actual pressure gradient predicted by the flow state.