石油与天然气地质 ›› 2005, Vol. 26 ›› Issue (3): 349-355.doi: 10.11743/ogg20050314

• 论文 • 上一篇    下一篇

松辽盆地徐家围子断陷火山活动期次与烃源岩演化

金晓辉1, 林壬子2, 邹华耀2, 冯子辉3, 任延广3   

  1. 1. 中国石化石油勘探开发研究院 北京 100083;
    2. 中国石油大学 北京 102249;
    3. 中国石油大庆油田股份公司大庆石油勘探开发研究院 黑龙江 大庆 163712
  • 收稿日期:2005-02-12 出版日期:2005-06-25 发布日期:2012-01-16
  • 基金项目:

    国家“十五”科技攻关项目(2001BA605A-08-01)

Volcanic activities and evolution of source rocks in Xujiaweizi fault depression, Songliao basin

Jin Xiaohui1, Lin Renzi2, Zhou Huayao2, Feng Zihui3, Ren Yanguang3   

  1. 1. Exploration and Production Research Institute, SINOPEC, Beijing;
    2. China University of Petroleum, Beijing;
    3. Daqing Petroleum Exploration and Development Research Institute, Daqing Oilfield Co.Ltd., Daqing, Heilongjiang
  • Received:2005-02-12 Online:2005-06-25 Published:2012-01-16

PDF (PC)

778

被引次数

82

摘要：

徐家围子断陷在断陷期有3次较大规模的火山活动,营城期火山活动持续时间最长。火山活动加速了深层火石岭组、沙河子组、营城组3套主力烃源岩的成熟。烃源岩的埋藏史、热史和生烃史模拟计算结果表明,徐家围子断陷深层火石岭组烃源岩埋深1300 m的Ro值,在约1Ma 时间内迅速达到0.7%。沙河子组以及火石岭组烃源岩埋深约2600 m时,Ro值已经达到1%。泉头组沉积前,沙河子组及火石岭组烃源岩已进入生气高峰。青山口组沉积前,营城组烃源岩处于生气高峰,沙河子组以及火石岭组开始生成干气。此时,登娄库组二段和泉头组一、二段区域盖层业已形成,徐家围子断陷开始形成营城组—泉头组天然气藏。嫩江期末,由于边界断层的活动,营城组—泉头组天然气藏进行再分配。

关键词: 烃源岩, 生烃演化史, 天然气, 松辽盆地

Abstract:

Xujiaweizi fault depression has experienced three relatively large volcanic activities during rift fauting,among which the volcanic activity duing the deposition of Yingcheng Fm had the longest duration.The volcanic activity speeded up the maturation of the major source rocks including deep Huoshiling Fm,Shahezi Fm and Yingcheng Fm. Simulations of burial history,thermal history and hydrocarbon generation history show that the Ro value of Huoshiling Fm source rocks at a burial depth of 1300m would have rapidly reached 0.7% in about 1Ma.The Ro value of Shahezi and Huoshiling Fins source rocks would have reached 1% at a burial depth of 2600m.Before the deposition of Quantou Fm,Shahezi and Huoshiling Fins source rocks would have entered the peak of gas generation.Before the deposition of Qingshankou Fro,Yingcheng Fin source rocks would have been in the peak of gas generation,while Shahezi and Huoshiling Fms source rocks would have begun to generate dry gas.At this time,the regional seals of the 2ndmember of Denglouku Fm and the 1st and 2nd members of Quantou Fm would have been formed,leading to the formation of gas pools in Yingcheng-Quantou Fms.By the end of the deposition of Nenjiang Fm,the movement of boundary faults led to the redistribution of gas pools in Yingcheng-Quantou Fms.

Key words: source rock, hydrocarbon generation history, natural gas, deep formations in Songliao basin

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