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以生烃动力学对海相碳酸盐岩的生烃情况进行了热模拟实验,对气液态烃类组分的生烃动力学参数进行了标定.在此基础上,结合专用Kinetics软件将动力学参数作为参照指标,用动力学方法外推到地质实际中.结果表明,在一定的地质条件下,海相碳酸盐岩热解生成气态烃的主要温度为150℃~220℃(Easy%Ro介于1.0%~3.0%),液态烃的生成温度主要为100℃~170℃(Easy%Ro介于0.5%~1.5%).通过该研究可以建立海相碳酸盐岩有机质生烃动力学演化的参照系,进而能够对中国成熟度较高的其他海相碳酸盐岩烃源岩作出相对合理的评价,从而为海相碳酸盐岩烃源岩的定量评价提供一种新的方法和途径,为加强海相碳酸盐岩油气勘探提供了依据.
Hydrocarbon generation kinetics was used to simulate the hydrocarbon generation of marine carbonates and the kinetic parameters of hydrocarbon generation were calibrated.On this basis, Kinetics software was used to combine kinetics The results show that under certain geological conditions, the main temperature for the pyrolysis of marine carbonates to generate gaseous hydrocarbons is 150 ℃ ~ 220 ℃ (Easy% Ro is between 1.0% and 3.0%). The formation temperature of liquid hydrocarbons is mainly between 100 ℃ and 170 ℃ (Easy% Ro is between 0.5% and 1.5%). Through this study, the hydrocarbon generation kinetics of marine carbonate rocks can be established So as to make a relatively reasonable evaluation of other matured marine carbonate source rocks in China and thus provide a new quantitative evaluation of marine carbonate source rocks Methods and approaches to provide a basis for strengthening marine carbonate exploration.