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页岩生烃组分及气油比演化特征对页岩油资源评价及可动性研究具有重要意义。本文利用单冷阱热解气相色谱仪,结合Kinetics生烃动力学专用软件,对渤南洼陷沙三下亚段低熟泥页岩进行了开放体系条件下生烃组分动力学模拟,对该区页岩不同演化阶段生烃产物进行了分析,计算了干气(C_1)、湿气(C_2~C_4)、轻质烃(C_5~C_(14))及重质烃(C_(15+))组分动力学参数活化能E_i和频率因子A,并将页岩动力学参数进行地质过程外推应用,结合渤南洼陷埋藏史与热史,对该区页岩油生烃史,气油比等生烃特征进行了计算及研究。
The shale hydrocarbon generation components and gas-oil ratio evolution are of great significance for shale oil resource evaluation and mobility research. In this paper, we use single-cold well pyrolysis gas chromatograph and Kinetics hydrocarbon generating kinetics software to simulate the hydrocarbon generation kinetics of low-mature shale under the open system in the third member of the Shahejie Formation in Bonan Sag. The hydrocarbon generation products in different evolutionary stages of shale in this area were analyzed. The effects of dry gas (C_1), moisture (C_2 ~ C_4), light hydrocarbons (C_5 ~ C_14) and heavy hydrocarbons (C_ (15+ )) Component kinetic parameter activation energy E_i and frequency factor A, and the shale dynamic parameters of the geological process of extrapolation, combined with the Burkina Buried Buried History and thermal history of the shale oil production history, Gas-oil ratio and other hydrocarbon generation characteristics were calculated and studied.