塔里木盆地塔北隆起西段中生界圈闭新认识与勘探思路
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摘要
塔北隆起西段发育典型的三层构造层:古生界构造层发育寒武—奥陶系潜山;中生界构造层发育披覆背斜,由差异压实作用引起的小型正断层使披覆背斜成为断背斜;位于库木格列姆群(E1-2km)膏盐层之上的新生界构造层以滑脱褶皱和冲断层为特征。本文认为,该区的中生界勘探应当放弃构造勘探的模式,立足于岩性勘探和小型的披覆构造及断背斜勘探。在该区应正确识别地震剖面上因上覆膏盐层影响而造成的大量构造假象,并结合中生界沉积相、沉积微相研究及区域构造应力场、构造变形特征分析,寻找可靠的地层圈闭。
The typical three-layer structural layer has been developed in the west of Tabei uplift: Cambrian-Ordovician buried hill in Paleozoic structural layer; drape anticline in Mesozoic structural layer, minor-scale of normal fault caused by differential compaction made it to be faulted anticline; the slip fold and thrust are characteristics of Cenozoic structural layer above the E1-2km gypsolith layer. The paper considered that the exploration in Mesozoic of the region should give up the mode of structural exploration and make effort to carry out lithologic exploration and exploration of small-scaled drape structure and faulted anticline.It should correctly identify a great amount of false structural images resulted from the influence of overlain gypsolith layer on seismic sections and find out reliable stratigraphic traps in combination with the study of Mesozoic sedimentary facies and microfacies and analysis of regional structural stress field and deformation feature.
The typical three-layer structural layer has been developed in the west of Tabei uplift: Cambrian-Ordovician buried hill in Paleozoic structural layer; drape anticline in Mesozoic structural layer, minor-scale of normal fault caused by differential compaction made it to be faulted anticline; the slip fold and thrust are characteristics of Cenozoic structural layer above the E1-2km gypsolith layer. The paper considered that the exploration in Mesozoic of the region should give up the mode of structural exploration and make effort to carry out lithologic exploration and exploration of small-scaled drape structure and faulted anticline.It should correctly identify a great amount of false structural images resulted from the influence of overlain gypsolith layer on seismic sections and find out reliable stratigraphic traps in combination with the study of Mesozoic sedimentary facies and microfacies and analysis of regional structural stress field and deformation feature.
引文
[1]贾承造.中国塔里木盆地构造特征与油气.北京:石油工业出版社,1997
[2]魏国齐,贾承造,姚惠君.塔北地区海西晚期逆冲—走滑构造与含油气关系.新疆石油地质,1995,16(2):96~1011
[3]何文渊,李江海等.塔里木盆地北部隆起负反转构造成因机制探讨.地质科学,2001,36(2):234~240
[4]孙龙德,李曰俊,宋文杰等.塔里木盆地北部构造与油气分布规律.地质科学,2002,37(增刊):1~13
[5]陈杰,丁国瑜等.中国西南天山山前的晚新生代构造与地震活动·中国地震,2001,17(2):134~155
[6]张光亚等.塔北地区变形样式及其油气分布规律.中国地质大学学报,1994,19(6):755~767
[7]贾东,卢华复,蔡东升等.塔里木盆地北缘库车前陆皱—冲断构造分析.大地构造与成矿学,1997,21(1):1~8
[8]汤良杰,贾承造,皮学军等.库车前陆褶皱带盐相关构造样式.中国科学(D辑),2003,33(1):38~46
[9]陈书平,汤良杰、贾承造.前陆区盐层对盐上盐下层构造高点的控制及石油地质意义.地球科学——中国地质大学学报,2003,28(3):297~300
[10]郭令智,施央申,卢华复等.印、藏碰撞的两种远距离构造效应.见:李清波,戴金星,刘如琦等编,现代地质学文集(上).南京:南京大学出版社,1992,128
[11]陈书平.库车前陆区西段新生代盐构造形成和演化[博士学位论文].北京:石油大学,2002
[12]田作基.南天山造山带和塔北前陆盆地构造样式及油气前景.成都:成都科技大学出版社,1995,30~79
[13]朱玉新,郭庆银,邵新军,宋文杰等.新疆塔里木盆地库车拗陷北缘白垩系储层沉积相研究.古地理学报,2002,(2)4:58~65
[14]Ge H,Jackson M P A,Vendeville B C.Kinematics and dynamics of salt tectonics driven by prograda-tion.AAPG Bulletin,1997,81(3):398~423
[2]魏国齐,贾承造,姚惠君.塔北地区海西晚期逆冲—走滑构造与含油气关系.新疆石油地质,1995,16(2):96~1011
[3]何文渊,李江海等.塔里木盆地北部隆起负反转构造成因机制探讨.地质科学,2001,36(2):234~240
[4]孙龙德,李曰俊,宋文杰等.塔里木盆地北部构造与油气分布规律.地质科学,2002,37(增刊):1~13
[5]陈杰,丁国瑜等.中国西南天山山前的晚新生代构造与地震活动·中国地震,2001,17(2):134~155
[6]张光亚等.塔北地区变形样式及其油气分布规律.中国地质大学学报,1994,19(6):755~767
[7]贾东,卢华复,蔡东升等.塔里木盆地北缘库车前陆皱—冲断构造分析.大地构造与成矿学,1997,21(1):1~8
[8]汤良杰,贾承造,皮学军等.库车前陆褶皱带盐相关构造样式.中国科学(D辑),2003,33(1):38~46
[9]陈书平,汤良杰、贾承造.前陆区盐层对盐上盐下层构造高点的控制及石油地质意义.地球科学——中国地质大学学报,2003,28(3):297~300
[10]郭令智,施央申,卢华复等.印、藏碰撞的两种远距离构造效应.见:李清波,戴金星,刘如琦等编,现代地质学文集(上).南京:南京大学出版社,1992,128
[11]陈书平.库车前陆区西段新生代盐构造形成和演化[博士学位论文].北京:石油大学,2002
[12]田作基.南天山造山带和塔北前陆盆地构造样式及油气前景.成都:成都科技大学出版社,1995,30~79
[13]朱玉新,郭庆银,邵新军,宋文杰等.新疆塔里木盆地库车拗陷北缘白垩系储层沉积相研究.古地理学报,2002,(2)4:58~65
[14]Ge H,Jackson M P A,Vendeville B C.Kinematics and dynamics of salt tectonics driven by prograda-tion.AAPG Bulletin,1997,81(3):398~423
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