基于风险系数的天然气水合物生成风险评估方法

Risk Assessment Method for Natural Gas Hydrate Formation Based on Risk Coefficient

为了准确评估海洋油气井生产中的水合物风险,提出风险系数概念,对水合物生成风险进行量化,进一步简化了水合物风险评估方法。以南海某油田油气井为研究对象,利用井筒温度-压力模型、PIPE Sim软件和PVT Sim软件评估该井浅部井段的水合物生成风险,根据风险系数绘制水合物风险评估曲线。

In order to accurately assess hydrate risk in offshore oil and gas well production,the concept of risk coefficient and the simplified method of hydrate risk assessment are proposed.In this paper,an oil and gas well in an oilfield in South China Sea is used as research object.The well hydrate temperature-pressure model,PIPESim software and PVTSim software are used to evaluate the hydrate formation risk in the shallow section of the well.The hydrate risk assessment curve is drawn by using the risk coefficient.