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用建立的蜡沉积放大模型可以把实验室数据放大应用于含蜡原油管道。可以根据这个模型预测冷管沿线的蜡沉积分布、可能出现的蜡沉积问题和清管周期。由于考虑了紊流的影响,大大提高了预测的准确性。准确预测蜡沉积可以节约含蜡原油生产系统的建设和运行费用。许多蜡沉积模型只考虑了分子扩散而忽略了剪切的影响。但紊流对蜡沉积有很大影响,这在蜡沉积模型中是不能忽略的。提出了将临界蜡强度作为放大参数,对剪切影响的放大方法和蜡沉积做了描述。对于给定的原油和油温,根据热流量和流速可以把实验室的蜡沉积数据放大,这种放大技术还可以用在多相流中。给出了北海及西非的海底管道沿线的蜡沉积分布和有效内径。同时也给出了脱气原油和含气原油不同的蜡沉积分布。
Deposition of the amplified model with established waxes can be used to amplify laboratory data for waxy crude pipelines. Based on this model, it is possible to predict wax deposition distribution along the cooling pipe, possible wax deposition problems and pigging cycle. Due to the influence of turbulence, the prediction accuracy is greatly improved. Accurately predicting wax deposition can save the cost of building and operating waxy crude oil production systems. Many wax deposition models only consider molecular diffusion and neglect the effect of shear. However, turbulence has a great influence on the wax deposition, which can not be neglected in the wax deposition model. Proposed the critical wax strength as a magnifying parameter, the method of amplification of shear and wax deposition are described. For a given crude oil and oil temperature, laboratory wax deposition data can be amplified based on heat flux and flow rate, and this amplification technique can also be used in multiphase flow. The wax deposition distribution and effective inner diameter along the submarine pipelines in the North Sea and West Africa are given. The different wax deposition profiles of degassed and gas-bearing crude oils are also given.