柯东构造带柯东段中新世以来两期构造变形与油气成藏
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摘要
昆仑山前柯东构造带油气勘探潜力大,但其地下复杂构造制约着本区油气勘探。综合最新钻井、地震、非地震及野外露头资料,对柯东构造带柯东段进行构造建模研究,认为柯东段构造变形为两期,早期为圈闭形成期,与断层相关褶皱发育;晚期为调整期,高角度断层发育。两期构造变形作用控制着本区油气成藏、调整过程。
Kedong Thrust Belt showed its great exploration prospect after the breakthrough in Well Kedong1.But the complicated structure holds up the exploration progress.Based on the analysis of drilling,seismic,CEMP and outcrop data,it can be concluded from the tectonic modeling analysis that the deformation occurred in 2 stages since Miocene.At the first stage,large-scaled anticlines were formed as fault-related folds.At the second stage,transpressional structure leaded to high-angle thrust which adjusted the former large-scale anticlines.The 2-stage deformation was corresponding to the former petroleum accumulation and latter adjusting.This recognition will guide the future exploration of the Kedong area.
Kedong Thrust Belt showed its great exploration prospect after the breakthrough in Well Kedong1.But the complicated structure holds up the exploration progress.Based on the analysis of drilling,seismic,CEMP and outcrop data,it can be concluded from the tectonic modeling analysis that the deformation occurred in 2 stages since Miocene.At the first stage,large-scaled anticlines were formed as fault-related folds.At the second stage,transpressional structure leaded to high-angle thrust which adjusted the former large-scale anticlines.The 2-stage deformation was corresponding to the former petroleum accumulation and latter adjusting.This recognition will guide the future exploration of the Kedong area.
引文
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[8]向奎.塔里木盆地西南边缘压扭构造体系及其石油地质意义[J].古地理学报,2006,8(2):233-240.
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[10]何登发,吕修祥,董大忠,等.前陆盆地分析[M].北京:石油工业出版社,1994:369-384.
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[12]贾承造.中国塔里木盆地构造特征与油气[M].北京:石油工业出版社,1997,250-255.
[13]Burtman V S,Molnar P.Geological and geophysical evidence for deepsubduction of continental crust beneath the Pamir[J].GeologicalSociety of America Special Paper,1993,286:1-76.
[14]肖中尧,唐友军,侯读杰,等.柯克亚凝析油气藏的油源研究[J].沉积学报,2002,20(3):716-720.
[15]张惠良,沈扬,张荣虎,等.塔里木盆地西南部昆仑山前下白垩统沉积相特征及石油地质意义[J].古地理学报,2005,7(2):157-168.
[16]刘太勋,徐怀民,焦翠华.柯克亚气田古近系凝析气藏储层特征[J].天然气工业,2007,27(4):18-20.
[2]陈新安,张兴林,屈秋平,等.塔西南山前构造特征及含油气前景[J].新疆石油地质,1999,20(6):468-472.
[3]肖安成,杨树锋,陈汉林,等.西昆仑山前冲断系的结构特征[J].地学前缘,2000,7(增刊):128-135.
[4]李向东,王克卓.西昆仑山北缘盆山构造转换解析[J].新疆地质,2002,20(增刊):19-25.
[5]马华东,杨子江.塔里木盆地西南新生代盆地演化特征[J].新疆地质,2003,21(1):92-95.
[6]伍秀芳,刘胜,汪新,等.帕米尔-西昆仑山麓新生代前陆褶皱冲断带构造剖面分析[J].地质科学,2004,39(2):260-271.
[7]曲国胜,李亦纲,李岩峰,等.塔里木盆地西南前陆构造分段及其成因[J].中国科学(D辑,地质科学),2005,35(3):193-202.
[8]向奎.塔里木盆地西南边缘压扭构造体系及其石油地质意义[J].古地理学报,2006,8(2):233-240.
[9]杜治利,冯晓军,郭群英,等.柯东构造带构造建模新认识[J].塔里木石油与天然气,2010,5(3):55-60.
[10]何登发,吕修祥,董大忠,等.前陆盆地分析[M].北京:石油工业出版社,1994:369-384.
[11]Cowgill E.Cenozoic right-slip faulting along the eastern margin of thePamir salient,northwestern China[J].GSA Bulletin,2010,122(1-2):145-161.
[12]贾承造.中国塔里木盆地构造特征与油气[M].北京:石油工业出版社,1997,250-255.
[13]Burtman V S,Molnar P.Geological and geophysical evidence for deepsubduction of continental crust beneath the Pamir[J].GeologicalSociety of America Special Paper,1993,286:1-76.
[14]肖中尧,唐友军,侯读杰,等.柯克亚凝析油气藏的油源研究[J].沉积学报,2002,20(3):716-720.
[15]张惠良,沈扬,张荣虎,等.塔里木盆地西南部昆仑山前下白垩统沉积相特征及石油地质意义[J].古地理学报,2005,7(2):157-168.
[16]刘太勋,徐怀民,焦翠华.柯克亚气田古近系凝析气藏储层特征[J].天然气工业,2007,27(4):18-20.
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