摘要：The topic of hydrate formation and blocking in offshore petroleum industry has attracted more and more attentions, which is known as one of the flow assurance issues. A new technology has been proposed to avoid the occurrence of hydrate blockage in multiphase transportation system, which is hydrate slurry flow technology, also named as cold flow technology. The low dosage hydrate inhibitor of anti agglomerate was added into the flow systems to allow hydrate formation in the liquid phase while it prevented the aggregation of hydrate particles. Thus these particles were evacuated with the liquid phase as pseudo-fluid like slurry. In this work, an inward and outward hydrate growth shell model coupled with two phase flow hydrodynamic model was applied to investigate the characteristics of gas-hydrate slurry stratified flow. The inward and outward hydrate growth shell model considered the kinetics, mass transfer and heat transfer process of hydrate formation, which could predict the hydrate formation rate and the released heat. The two phase flow hydrodynamic model included mass, momentum and energy equations. A case for an inclined pipeline was simulated using the combined models. The results showed that once the kinetic requirements for hydrate crystallization was satisfied, hydrates would form quickly at the initial stage and then hydrate formation rate would decrease obviously due to the limitation of mass transfer and heat transfer. Meanwhile, the flow characteristics, such as the liquid holdup and pressure drop, were predicted by the model, which also provided an acceptable results about the state of hydrates (onset time of formation, formation rate, volume fraction, etc.) in multiphase system for the operation engineers in the field. The key parameters of the inward and outward hydrate growth shell model were determined by referring to the literatures. To investigate the reliability and influence of these set values on the results, a sensitivity analysis of the ke

关键字：natural gas-hydrate slurry stratified flow hydrodynamics model inward and outward hydrate shell growth model

发表日期：2017-01-01

影响因子：0.000000

期刊分区（SCI为中科院分区）：无

收录情况：EI（工程索引）,国际学术会议论文集

发表期刊名称：Proceedings of the Biennial International Pipeline Conference, IPC

参与作者：吕晓方

通讯作者：柳扬,丁麟

第一作者：史博会,宫敬

论文类型：会议论文

论文概要：史博会,柳扬,丁麟,吕晓方,宫敬，SIMULATION OF GAS-HYDRATE SLURRY STRATIFIED FLOW WITH INWARD AND OUTWARD HYDRATE GROWTH MODEL，Proceedings of the Biennial International Pipeline Conference, IPC，2017，

论文题目：SIMULATION OF GAS-HYDRATE SLURRY STRATIFIED FLOW WITH INWARD AND OUTWARD HYDRATE GROWTH MODEL