天然气地球科学

• 天然气地质学 • 上一篇    下一篇

库车前陆盆地复杂挤压剖面热演化历史模拟及烃源岩成熟度演化特征

鲁雪松,宋岩,赵孟军,李勇卓勤功王媛   

  1. 1.中国石油天然气集团公司盆地构造与油气成藏重点实验室,北京 100083;
    2.中国石油勘探开发研究院,北京 100083;
    3.中国石油塔里木油田分公司勘探开发研究院,新疆 库尔勒 841000
  • 收稿日期:2014-06-24 修回日期:2014-07-23 出版日期:2014-10-10 发布日期:2014-10-10
  • 作者简介:鲁雪松(1982-),男,安徽安庆人,博士,工程师,主要从事油气成藏综合分析及油气资源评价研究. E-mail: luxs@petrochina.com.cn.
  • 基金资助:

    国家油气重大专项(编号:2011ZX05003-001);中国石油科技开发项目(编号:2011-B0403)联合资助.

Thermal History Modeling of Complicated Extrusional Sectionand Source Rock Maturation Characteristics in Kuqa Foreland Basin

LU Xue-song,SONG Yan,ZHAO Meng-jun,LI Yong,ZHUO Qing-gong,WANG Yuan   

  1. 


    (1.Key Laboratory of Basin Structure and Hydrocarbon Accumulation,CNPC,Beijing 100083,China;
    2.Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,China;
    3.Research Institute of Petroleum Exploration and Development,PetroChina Tarim Oilfield Company,Korla  841000,China)
     
  • Received:2014-06-24 Revised:2014-07-23 Online:2014-10-10 Published:2014-10-10

摘要:

结合库车前陆盆地的实际地质情况,详细探讨了挤压逆冲过程、膏盐岩塑性流动、快速沉积或剥蚀过程对热流及烃源岩成熟度演化的影响。基于IES PetroMod软件先进的“Block”功能,采用瞬态热流法对库车前陆盆地复杂挤压构造剖面进行了热演化历史模拟,在剖面上综合考虑了冲断叠覆作用、高热导率的厚层膏盐岩、快速沉积或剥蚀作用等因素对热演化历史的影响。结果表明库车前陆盆地侏罗系—三叠系烃源岩最大成熟生烃中心并不在现今埋深最大的拜城凹陷中心,而是位于克拉苏构造带冲断前缘深层一线,并揭示了不同构造带烃源岩成熟度演化的时空差异性,该认识对分析不同区带油气差异成藏过程及相态分布具有重要意义。

关键词: 前陆冲断带, 挤压构造剖面, 热演化历史模拟, 成熟度演化, 库车前陆盆地

Abstract:

Combined with geological conditions in Kuqa foreland basin,the impact of thrusting process,salt plastic flow,rapid depositions or erosions on heat flow and source rock maturity evolution was discussed.Based on the advanced “Block” function of IES PetroMod software,thermal history modeling of complicated extrusional structural section in Kuqa foreland basin has been successfully carried out.In the modeling,it comprehensively considers the impact of overthrusting,huge and thick gypsum-salt layer with high thermal conductivity,rapid deposition or denudation on thermal evolution history.The result shows that the hydrocarbon generation center of Jurassic-Triassic source rock in Kuqa foreland basin is not in today′s Baicheng sag with the deepest burial depth,but in the deep layers of the thrust front in Kelasu thrust belt.Moreover,it reveals the source rock maturation differentiates in spatial and temporal within different tectonic belts,which is important to understand the different hydrocarbon accumulation history and phase distribution in different structural belts.
 

 

Key words: Foreland thrust belt, Extrusional structural section, Thermal history modeling, Maturity evolution, Kuqa foreland basin

中图分类号: 

  • TE121.1
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