烃源岩有机碳含量与生排油效率动态评价

申宝剑; 秦建中; 冯丹; 陶国亮; 仰云峰; 腾格尔; 潘安阳

doi:10.11781/sysydz201704505

烃源岩有机碳含量与生排油效率动态评价

doi: 10.11781/sysydz201704505

申宝剑^1,2,
秦建中^1,2,
冯丹³,
陶国亮^1,2,
仰云峰^1,2,
腾格尔^1,2,
潘安阳^1,2

1.
页岩油气富集机理与有效开发国家重点实验室, 江苏无锡 214126
2. 中国石化石油勘探开发研究院无锡石油地质研究所, 江苏无锡 214126
3. 渤海钻探工程技术研究院, 河北任丘 062552

基金项目: 国家自然科学基金重点项目“古生界页岩含气性原生有机质控制作用研究”（U1663202）资助。

详细信息

作者简介:
申宝剑(1978—),男,博士,高级工程师,从事烃源岩有机地球化学研究。E-mail:shenbj.syky@sinopec.com。

中图分类号: TE122.115
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出版历程
- 收稿日期: 2017-02-13
- 修回日期: 2017-06-10
- 刊出日期: 2017-07-28

Dynamic assessment of organic carbon content and hydrocarbon generation and expulsion efficiency in source rocks

1.
State Key Laboratory of Shale Oil and Gas Enrichment Mechanism and Effective Development, Wuxi, Jiangsu 214126, China
2. Wuxi Research Institute of Petroleum Geology, Wuxi, Jiangsu 214126, China
3. Research Institute of CNPC Bohai Drilling Engineering Company Limited, Renqiu, Hebei 062552, China

摘要

摘要: 选择海相典型烃源岩样品和人工配制烃源岩样品进行热压模拟实验，对比分析了海相烃源岩的生油量、生排油效率与烃源岩有机碳含量的关系，模拟结果表明：（1）烃源岩的生排油量与烃源岩有机碳含量呈线性正相关关系，生排油效率与有机碳含量呈曲线（非线性）正相关关系，相关系数的大小与烃源岩的干酪根类型、岩性及演化史等有关；（2）在整个生烃演化过程中，高有机质含量的优质烃源岩（TOC一般大于2%）的生排油量和效率都高于中等有机质丰度的中等烃源岩（TOC一般在0.5%~2.0%之间）和低有机质丰度的差烃源岩（TOC一般小于0.5%），只有高有机质丰度的优质烃源岩才能够大量生排出油并形成大油田，差烃源岩即使很厚也难以形成大量的油气聚集；（3）在地质演化过程中，烃源岩TOC含量及其生排油气能力始终都是动态变化的，因此需要在确定演化阶段的基础上，结合有机碳含量和生排油效率进行烃源岩和资源量动态评价。
- 优质烃源岩 /
- 有机碳含量 /
- 生排油效率 /
- 成熟度 /
- 烃源岩评价 /
- 资源评价
Abstract: The relationship of the yields and efficiencies of oil generation and expulsion with total organic carbon content (TOC) was analyzed based on thermal simulations of typical natural marine source rocks and artificial source rocks. (1) The simulation results show a positive linear correlation between the yields of oil generation and expulsion and TOC, and a nonlinear correlation between the efficiencies of oil generation and expulsion and TOC. The correlation coefficients are related to kerogen type, lithology and thermal maturity. (2) Source rocks with high TOC contents (generally over 2.0%) always have higher yields and efficiencies of oil generation and expulsion throughout the simulation experiments, when compared to source rocks with middle (0.5%-2.0%) and low (less than 0.5%) TOC contents, which indicates that only source rocks with high TOC contents have the capacity to form large oil fields. Source rocks with low TOC content do not generate large hydrocarbon accumulations even if they are very thick. (3) In the process of geological evolution, the TOC content and the capability of hydrocarbon generation and expulsion for source rocks are changing continuously. Correspondingly, the evaluations of source rock and resources should be dynamic.
- excellent source rocks /
- total organic carbon content /
- efficiency of oil generation and expulsion /
- maturity /
- source rock evaluation /
- resource assessment

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