新疆石油地质

新疆石油地质 ›› 2004, Vol. 25 ›› Issue (6): 614-616.

• 油气勘探 • 上一篇    下一篇

侵入岩对源岩生烃影响的定量模拟

李臣1, 孟元林2   

  1. 1.中国石油新疆油田分公司勘探开发研究院,新疆 克拉玛依 834000;
    2.大庆石油学院,黑龙江 大庆 163318
  • 收稿日期:2003-12-15 修回日期:2004-03-31 发布日期:2021-01-14
  • 作者简介:李臣(1970-), 男,黑龙江绥化人,工程师,硕士,石油地质。联系电话:0990-6883936-804

Quantitative Modeling of Effect of Intrusion Rock on Hydrocarbon Generationg of Source Rocks

LI Chen1, MENG Yuan-lin2   

  1. 1. Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China;
    2. Daqing Petroleum Institute, Daqing, Heilongjiang 163318, China
  • Received:2003-12-15 Revised:2004-03-31 Published:2021-01-14

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摘要： 对于较大规模的岩浆侵入区而言,岩浆的侵入对被侵入区的烃源岩生排烃的影响目前尚没有很好的分析方法。渤海湾盆地冀中坳陷文安斜坡古近纪时岩浆侵入石炭-二叠系煤系地层,对其烃源岩的热演化影响巨大。从盆地模拟的角度出发,将岩浆侵入视为附加热源,根据岩浆侵入的厚度及地温资料,给其赋予等效的大地热流值并代入热史程序中,得出源岩的生排烃结果。通过计算,文安斜坡古近纪时岩浆的侵入对石炭-二叠煤系源岩生烃的贡献率为62.4%.

关键词: 冀中坳陷, 文安斜坡, 岩浆, 侵入作用, 排烃, 模拟

Abstract: For large-scale magma intrusion area, magma intrusion effects on hydrocarbon generating and expulsing of source rocks have not been recognized distinctly. In Jizhong depression of Bohai Bay basin, where the W en 'an slope encountered with magma intrus ion that entered in-to the Carboniferous-Permian coal measure strata in Palaeogene, which has great effects on thermal evolution of the source rocks. As shown from the basin modeling,the magma intrusion could be regarded as additional geothermal source which can be put as an equivalent terrestrial heat flow value into the modeling in terms of the magma-intrusive depth and geothermal data,obtaining the hydrocarbon-generated and-expulsed re-sults of the source rocks. The estimation shows that the contribution rate of the magma intrusion to hydrocarbon generation in Carboniferous-Per-mian source rocks is up to 62.4%.

Key words: Jizhong depression, Wen an slope, magma, intrusion, hydrocarbon expulsion, modeling, simulation

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