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原油裂解气在中国高-过成熟地区的天然气资源中举足轻重,对其资源量的有效预测和评估是勘探决策的关键.通过高压封闭体系原油裂解模拟实验,对海相原油裂解生成的气、液、固三相产物(总气体、残余液烃、固态焦沥青)进行定量分析,在实验数据和生烃动力学计算的基础上,回归拟合出原油裂解过程中气、液、固态产物产率变化的相关关系式.据此建立了从储层固体沥青入手的、适合原油裂解成因天然气资源量的预测模型,并建立了基于质量守恒原理的验证公式.从实验基础和实际应用两个方面讨论了预测模型的影响因素及应用条件.该模型的提出,将为中国高-过成熟海相碳酸盐岩地区天然气资源评价和古油藏恢复提供新的思路和启发,可望具有较好的应用价值.
Crude cracked gas plays an important part in natural gas resources in China’s high-mature region, and the effective prediction and assessment of its resources is the key to exploration and decision.According to the cracked simulation experiment of high pressure closed system, , Solid three-phase products (total gas, residual liquid hydrocarbon, solid pyrophoric pitch) were quantitatively analyzed. Based on the experimental data and calculation of hydrocarbon generating kinetics, the yields of gas, liquid and solid products during the cracking of crude oil Based on this, a prediction model suitable for the cracking of natural gas from crude oil is established, and a verification formula based on the principle of conservation of mass is established.From two aspects of experimental foundation and practical application The influencing factors and application conditions of the prediction model are proposed.The proposed model will provide new ideas and enlightenments for the evaluation of natural gas resources and the recovery of paleo-oil reservoirs in the high-over-mature marine carbonate areas in China, Value.