高含CO2水合物生成条件模拟与预测研究

利用“油气藏地质及开发工程”国家重点实验室(西南石油大学)专用水合物测试装置，测定了不同二氧化碳含量的烃类气样在不同给定压力下生成水合物的温度，同时基于分子热力学理论建立了高含二氧化碳气体的水合物生成条件预测模型。将模型的预测结果与测试结果进行对比分析验证，结果表明:建立的模型对高含二氧化碳气体水合物预测结果较准确，最大相对误差仅为0.91%，能满足工程设计与计算的要求，为高含二氧化碳体系水合物研究提供了一定的理论依据。

SIMULATION AND PREDICTION OF HYDRATE FORMATION UNDER THE CONDITIONS OF HIGH CARBON DIOXIDE CONTENT

A test is carried out with the special equipment of the Oil and Gas Reservoir Geology and Exploitation State Key Lab at SWPU by using hydrocarbon gas samples with different carbon dioxide content to measeru the tempreature in which at the given pressure carbon dioxide hydrate forms. A new prediction model of hydrate formation conditions in high carbon dioxide is developed in the study based on thermodynamics theory. The results of simulation are quite consistent with the results of out test, and the maximun relative error is controlled within 0.91%, which can meet the requirments of engineering design and calculation and is a new means for further study on carbon dioxide hydrate during gas production.