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海上气田在正常生产中由于受温度、压力、流动条件突变等因素影响,可能会形成天然气水合物,从而引发管道堵塞、设备超压等生产事故,为了防止水合物的生成,通常采取注入乙二醇进行水合物抑制。本文结合实际的高压天然气田开采工程经验,得出水合物形成的三个主要工况—正常生产工况、长时间关井工况、关井再启动工况,运用ASPEN HYSYS模拟与Hammerschmidt公式计算相结合的方法分析水合物的形成和乙二醇的注入,解决了工程实际问题,对类似高压气田的开发有重要的借鉴意义。
In normal production, offshore gas fields may form natural gas hydrate due to temperature, pressure and sudden changes in flow conditions, thus causing pipeline blockage and equipment overpressure. In order to prevent the formation of hydrates, Alcohol for hydrate inhibition. Based on the actual experience in the exploitation of high-pressure natural gas fields, this paper draws three main conditions for hydrate formation-normal production conditions, long-time shut-in conditions and shut-in and restarting conditions. By using ASPEN HYSYS simulation and Hammerschmidt formula The combination of hydrate formation and ethylene glycol injection analysis, to solve the practical problems of the project, the development of similar high-pressure gas fields have important reference.