| 含油气盆地深部高过成熟烃源岩古TOC恢复方法及其应用 |
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| 引用本文： | 庞雄奇,李倩文,陈践发,黎茂稳,庞宏.含油气盆地深部高过成熟烃源岩古TOC恢复方法及其应用[J].古地理学报,2014,16(6):769-789. |
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| 作者姓名： | 庞雄奇 李倩文 陈践发 黎茂稳 庞宏 |
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| 作者单位： | 1.油气资源与探测国家重点实验室,北京 102249;2.中国石油大学(北京)盆地与油藏研究中心,北京 102249;3.中石化石油勘探开发研究院,北京 100083 |
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| 基金项目： | 国家“973”项目，国家自然科学基金重点项目 |
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| 摘 要： | 根据烃源岩演化过程中残留生烃母质变化原理,建立了TOC恢复的数学地质模型,提出了TOC演化与各种主控因素之间的定量关系模式,通过对模式中各主控因素在自然条件下变化的特征取值,计算得到了TOC恢复系数,做出了泥质岩烃源岩和碳酸盐岩烃源岩在含不同类型干酪根情况下的TOC演化图版。这一方法的最大特色是避免了人为主观因素和高温压物理模拟实验条件可能带来的结果偏差。研究表明:随着热演化程度的增加,烃源岩内残留的TOC含量逐渐减少,在大量生排烃阶段(RO=0.5％～2.0%)变化幅度最大;处于高过成熟阶段(RO>1.2%)的烃源岩,其原始TOC恢复系数随RO增大而逐渐增加,含Ⅰ型、Ⅱ型、Ⅲ型母质的泥质岩烃源岩TOC恢复系数分别可达3.0、2.0、1.4;含Ⅰ型、Ⅱ型、Ⅲ型母质的碳酸盐岩烃源岩TOC恢复系数分别可达3.2、2.2、1.5。论文例举了源岩TOC恢复在实际工程中的应用。
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| 关 键 词： | 含油气盆地深部 高过成熟烃源岩 TOC恢复 烃源岩有效性判别 烃源岩有效性评价 |
| 收稿时间： | 12 September 2014 |
Recovery method of original TOC and its application in source rocks at high mature-over mature stage in deep petroliferous basins |
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| Pang Xiongqi,Li Qianwen,Chen Jianfa,Li Maowen,Pang Hong.Recovery method of original TOC and its application in source rocks at high mature-over mature stage in deep petroliferous basins[J].Journal of Palaeogeography,2014,16(6):769-789. |
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| Authors: | Pang Xiongqi Li Qianwen Chen Jianfa Li Maowen Pang Hong |
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| Institution: | 1.State Key Laboratory of Petroleum Resources and Prospecting, Beijing 102249;2.Basin & Reservoir Research Center, China University of Petroleum(Beijing), Beijing 102249;3.Research Institute of Petroleum Exploration and Development, Sinopec, Beijing 100083 |
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| Abstract: | According to the change of residual hydrocarbon generation materials in the evolution process of source rocks,the geological conceptual model about the TOC recovery was restored, so it proposed a quantitative pattern between TOC evolution and the main controlling factors. Then through giving a certain value for each factor that calculated the TOC recovery coefficient, the TOC evolution charts for muddy source rocks and carbonate source rocks in the case of different kerogen types were made. The main characteristic of this method was able to avoid the deviation that subjective factors and physical simulation experiment conditions might lead to.The results were as follows:With the increasing of thermal evolution level,the residual TOC in source rocks reduced gradually in large hydrocarbon expulsion stages(RO=0.5％～2.0%); the reduction amount was biggest for source rocks in high mature-over mature stage(RO>1.2%); the recovery coefficient gradually increased with the increasing of RO. The TOC recovery coefficients can respectively reached to 3.0,2.0, and 1.4 for muddy source rocks in case of kerogen types Ⅰ, Ⅱ, and Ⅲ;for carbonate source rocks,the TOC recovery coefficients were respectively 3.2,2.2, and 1.5. The practical applications of TOC recovery were exemplified in field. |
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| Keywords: | deep petroliferous basin high mature -over mature source rock recovery of TOC discriminant standard of effective source rock evaluation of effective source rock |
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