摘要
随着高压气井的不断勘探与开发 ,由于受气体的焦耳—汤姆逊效应的影响 ,高压条件下天然气水合物形成条件的预测愈加重要。针对高压气井测试与生产过程中的压力高、流速高、天然气及地层水成分复杂等特点 ,应用热力学理论 ,结合部分室内实验 ,研究水合物的形成条件和预测方法 ,建立了计算模型和预测软件 ,以判断和预防高压测试系统中水合物的形成。还介绍了在水合物生成条件计算方法的基础上 ,利用实测数据 ,对计算结果进行的验证。结果表明计算误差较小 ,可用于高于 10 0MPa压力条件下的计算。
Along with the increase in high pressure gas wells in exploration and development,the prediction of natural gas hydrate formation conditions is of vital importance owing to the influence of Joule Thomson effect on gas.In light of the properties as high pressure,high velocity and complicated natural gas and formation water constituents encountered in the high pressure gas well test and production,the formation conditions and prediction method were studied by applying thermo dynamical theory and in combination with partial experimental results,then a calculation model and relevant software were developed for judging and preventing the hydrates from being formed in high pressure testing system.In the paper,on the basis of introducing hydrate formation conditions and calculation method,the results are examined by applying the experimental data.With a smaller error,this method may be used for the calculation with a pressure of higher than 100 MPa.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2002年第4期91-94,共4页
Natural Gas Industry
