新疆石油地质

›› 2014, Vol. 35 ›› Issue (6): 1-1.

• 论文 •    

原油及族组分生成动力

魏志福1，2，王永莉1，2，邹艳荣3，彭平安3   

  1. (1. 甘肃省油气资源研究重点实验室;2.中国科学院 油气资源研究重点实验室,兰州 730000;3. 中国科学院 广州地球化学研究所 有机地球化学重点实验室,广州 510640)
  • 出版日期:2019-01-01 发布日期:1905-07-15

Kinetics of Crude Oil and Its GroupType Generation

WEI Zhifu12, WANGYongli12, ZOU Yanrong3, PENG Pingan3   

  1. (1.Key Laboratory of Petroleum Resources Research, Gansu Province; 2.Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China; 3.Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, Guangdong, 510640, China)
  • Online:2019-01-01 Published:1905-07-15

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摘要： 利用黄金管-高压釜限定体系，对采自东营凹陷牛15井（沙三下亚段）和王120井（沙四上亚段）的烃源岩所制备的干酪根样品在50 MPa的恒定压力下，以2℃/h和20℃/h的升温速率分别进行程序升温热解，热解后的产物通过索氏抽提后经微型柱色谱分离为饱和烃、芳烃、非烃和沥青质。借助Kinetics2000软件获取总烃及族组分的生成动力学参数，结合东营凹陷南坡新生代烃源岩的埋藏史和热史，开展了原油及族组分生成动力学研究。结果表明，东营凹陷沙三下亚段和沙四上亚段烃源岩进入生烃门限的地质时间分别为4.26 × 106 a 和 24.85 × 106 a，沙三下亚段烃源岩目前处于主要生油阶段，而沙四下亚段烃源岩处于生油的后期阶段。现阶段，东营凹陷沙三下亚段烃源岩生成的饱和烃、芳烃、非烃和沥青质的累计产率分别为222.03 mg/g，71.30 mg/g，62.37 mg/g和 50.04 mg/g；而沙四上亚段烃源岩生成的饱和烃、芳烃、非烃和沥青质的累计产率分别为282.94 mg/g，98.98 mg/g，66.79 mg/g和 53.82 mg/g

Abstract: Pyrolysis of two kerogens isolated from Niu?15 well (E3s3) and Wang?120 well (E2 s14 ) source rocks in the Dongying sag of Bohai Bay basin was performed in a confined system under pressure of 50 MPa at temperature of 2°C/h and 20°C/h. The generated products were extracted with solvent and separated using micro?column chromatography into group?type fractions like saturates, aromatics, resin and as phaltene. Kinetics 2000 software was employed to fit the kinetic parameters, including the total hydrocarbons and group composition produced from the two kerogen samples. The generation kinetics study of crude oil and its group?type fractions from the kerogens shows that the oil thresholds that the E3s3 and the E2 s14 source rocks were generated at about 4.26 ×106 a and 24.85×106 a, respectively, and the E3s3 source rocks are still in the main phase of hydrocarbon generation, while the E2 s14 source rocks in the late phase. At present, the yields of saturates, aromatics, resin and asphaltene from the E3s3 source rocks are 222.03 mg/g, 71.30 mg/g, 62.37 mg/g and 50.04 mg/g, while those from the E2 s14 source rocks are 280.94 mg/g, 95.98 mg/g, 66.79 mg/g and 53.82 mg/g, respectively

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