我国不同原油裂解成气动力学研究

提供了我国海相、湖相原油的黄金管裂解成气热模拟实验数据和裂解成气的动力学参数。对比分析典型样品裂解生气特征、升温速率与温度对油裂解成气的影响表明:我国海相、湖相原油裂解成气门限温度、消亡温度差异不大,但与国外样品差异明显;源内和源外原油裂解成气过程差别明显,源内原油热稳定性弱于源外原油热稳定性,在油裂解气评价中应该考虑排烃效率的影响;温度是原油裂解的主要控制因素,温度高于180℃时,原油裂解过程主要在10 Ma内完成,且液态烃消亡温度要高于200℃。本次研究的实验结果、动力学参数及相关结论可供盆地模拟和油藏勘探工作采用和借鉴。

Kinetic Features of Gas Oil Cracking for the Different Types of Crude Oil in China

Thermal cracking data from marine and lacustrine oils were provided by using gold tube and different gas generation kinetic parameters in this paper. Based on the comparative studies of gas generation characteristics from different oils, influence of heating rates and temperatures on oil cracking process, the following results can be proposed: The threshold temperature and deadline temperature for gas generation from marine and lacustrine oils in China are usually similar, but different with other oils from abroad; oil cracking environments (inside the source rock or outside the source rock) and hydrocarbon expulsion efficiency have important impact on the oil cracking process; temperature is the major controlling factor on oil cracking process and this process usually accomplish in 10Ma when the environment temperature is higher than 180℃, and the oil deadline temperature is higher than 200℃ in most cases. We believed that the data and conclusions provided in the paper would be beneficial to basin modelling and oil reservoir prospecting.