复杂地形条件下气液两相混输工艺水力模型建立

随着普光气田的开发，关于复杂地形条件下的气液混输工艺计算模型，特别是湿气集输工艺计算模型成为研究的关键问题。针对低含液复杂地形条件，建立了水力计算模型，提出了气液界面的凹面湿壁分数、剪切应力以及摩擦因子计算闭合关系式。开展了室内实验，验证了压力与持液率计算模型的准确性，收集了普光气田的现场生产压力和清管积液量数据，计算的压降结果与生产数据之间的误差在±5%以内，积液量的预测结果误差在±10%以内，吻合较好，建立的模型可以用于该条件的工艺计算。

Development of hydrodynamic model for gas-liquid two-phase flow for complex pipeline profiles

With the production of the Puguang gas field,low-liquid-loading gas-oil two-phase flow present in wet gas pipelines is one of the typical occurrences of three-phase flow in the oil and gas industry.Wet gas transportation pipelines often contain water and hydrocarbon condensates,which leads to the occurrence of low-liquid-loading three-phase flow.However,small amounts of condensates can lead to a significant increase in pressure drop along a pipeline.In-situ liquid holdups are important for determining piggi...