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简要概述了气田长输管道流动保障需要重点考虑的问题之一:水化物。水化物作为深水流动保障的主要研究内容之一,在前期设计时需要全面考虑,为生产过程中海管安全运行提供设计依据。从水化物的形成机理,各种防止方法和原理以及其适用范围,形成水化物后的补救措施,油田和气田防止水化物的不同措施等方面进行了描述,并得出水化物“防止胜于补救”的结论。结合PY35-1/35-2项目的具体情况,采取了注入MEG防止正常操作过程生成水化物,采取注入甲醇和泄压方式消除已生成的水化物,并利用OLGA软件进行模拟,为各种措施提供理论依据。
A brief overview of the gas field long-distance pipeline flow assurance need to focus on one of the issues: hydrate. As one of the main research contents of the guarantee of deepwater flow, hydrate needs to be fully considered in the design of the early stage and provides the design basis for the safe operation of the pipeline in the production process. From the formation mechanism of hydrates, a variety of prevention methods and principles and their scope of application, the formation of hydration after the remedial measures, oil and gas fields to prevent hydration of different measures and other aspects were described, and come to hydration Remedy "conclusion. Combined with the specific circumstances of PY35-1 / 35-2 project, MEG was injected to prevent the formation of hydrates during normal operation, methanol injection and depressurization were adopted to eliminate the generated hydrates, and OLGA software was used to simulate various measures Provide a theoretical basis.