Experimental Study on Hydrocarbon Evolution Ability of Natural Gas Produced in Oilfield at Low Temperature and Its Chemical Mechanism
As the global demand for clean energy continues to grow,the efficient utilization of natural gas has become a key area of energy research.In this paper,gas chromatography-mass spectrometry(GC-MS)was used to conduct qualitative and quantitative analysis of gas components in oil field natural gas samples,and a kinetic model suitable for low-temperature conditions was established.The study found that in the temperature range of 20℃ to 80℃ and the pressure of 0.1 MPa to 10 MPa,the mole fraction of methane increased with increasing of temperature,while the mole fractions of ethane and propane decreased with increasing of temperature.The reaction rate constant of methane did not change much at different temperatures(0.0746 to 0.0517),indicating that it was relatively stable under low temperature conditions.The reaction rate constants of ethane and propane increased significantly with increasing of temperature and pressure,reflecting that they were more sensitive to environmental changes.In addition,this study further explored the combined effects of temperature and pressure on the reactions of these hydrocarbons,revealing the chemical transformation mechanisms under different environmental conditions.The conclusions of this study are of great significance for optimizing natural gas processing technology,especially processing and conversion strategies under low temperature conditions.
Natural gas produced in oilfieldLow temperature hydrocarbon evolutionNatural gas dynamicsChemical mechanism
万方数据
维普
