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地质科学  2007, Vol. Issue (1): 189-198    DOI:
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鄂西—渝东地区热史恢复及烃源岩成烃史
卢庆治1, 马永生2, 郭彤楼2, 胡圣标1
1. 中国科学院地质与地球物理研究所 北京 100029;
2. 中国石油化工股份有限公司南方勘探开发分公司 昆明 650021
THERMAL HISTORY AND HYDROCARBON GENERATION HISTORY IN WESTERN HUBEI-EASTERN CHONGQING AREA
Lu Qingzhi1, Ma Yongsheng2, Guo Tonglou2, Hu Shengbiao1
1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029;
2. Southern Exploration and Development Division, China Petroleum & Chemical Corp., Kunming 650021
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摘要 根据鄂西—渝东地区镜质体反射率数据进行的热史恢复结果表明:该区在晚二叠世初期达到最高古热流(可达68~78mW/m2,地表热流),从晚二叠世初到现今古热流持续降低,在侏罗纪末期古热流平均为~54mW/m2(地表热流);鄂西—渝东地区中生界与新生界之间不整合面的剥蚀量可达1700~4000m。成烃史研究表明:鄂西—渝东地区志留系烃源岩在晚志留世—早二叠世进入生油高峰,在早-中三叠世进入生气期,中侏罗世晚期进入过成熟干气阶段,快速生烃时期是在晚志留世、二叠纪—中三叠世及早-中侏罗世;而二叠系烃源岩在早三叠世进入生油门限,于中-晚三叠世达到生油高峰,在中-晚侏罗世进入生气期,晚侏罗世晚期进入过成熟,快速生烃时期是在早-中三叠世及侏罗纪。
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卢庆治
马永生
郭彤楼
胡圣标
关键词热史恢复   剥蚀量   成烃史   鄂西—渝东地区     
Abstract: Thermal history reconstruction by using vitrinite reflectance data of western Hubei-eastern Chongqing area indicated that the maximum paleo-heat flow(68~78 mW/m2) was reached in the early stage of Late Permian, and then decreased to present, and the paleo-heat flow at the end of Jurassic was averaged ~54 mW/m2. The erosion thickness on the Mesozoic and Cenozoic unconformity varied from 1700 m to 4000 m. The Silurian source rocks of western Hubei-eastern Chongqing area came into the oil-generating peak in Late Silurian-Early Permian, entered the gas-generation period in Early-Middle Triassic, and reached the overmature-dry gas phase in late Middle Jurassic. The hydrocarbon generation stage of the Silurian source rocks occurred during Late Silurian, Permian-Middle Triassic and Early-Middle Jurassic. The Permian source rocks came into the oil-generating peak in Middle-Late Triassic, entered the gas-generation period in Middle-Late Jurassic, and reached the overmature phase in late Late Jurassic. the hydrocarbon generation stage of the Permian source rocks occurred during Early-Middle Triassic and Jurassic.
Key wordsThermal history   Erosion thickness   Hydrocarbon generation history   Western Hubei-eastern Chongqing area   
收稿日期: 2006-02-28;
基金资助:国家自然科学基金项目(批准号:40172100);中国石油化工股份有限公司南方勘探开发分公司项目资助
引用本文:   
卢庆治,马永生,郭彤楼等. 2007, 鄂西—渝东地区热史恢复及烃源岩成烃史. 地质科学, (1): 189-198.
Lu Qingzhi,Ma Yongsheng,Guo Tonglou et al. THERMAL HISTORY AND HYDROCARBON GENERATION HISTORY IN WESTERN HUBEI-EASTERN CHONGQING AREA[J]. Chinese Journal of Geology, 2007, (1): 189-198.
 
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[1] 袁玉松, 孙冬胜, 李双建, 林娟华. 四川盆地加里东期剥蚀量恢复[J]. 地质科学, 2013, 48(3): 581-591.
[2] 张帆, 孔明华, 王雪, 曾花森. 松辽盆地北部热史恢复及烃源岩生烃史[J]. 地质科学, 2009, 44(2): 468-477.
[3] 王永新, 汪集旸, 胡圣标. 辽河盆地东部凹陷热历史及构造—热演化特征[J]. 地质科学, 2003, (2): 214-220.
 
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