二连盆地重磁异常地质意义及上古生界结构认识
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摘要
二连盆地为我国一个中型油气区。本文在对研究区重磁资料统一拼接、处理基础上,通过分析重磁资料反映的地质结构信息,结合区域地震资料,推断了该区上古生界地质结构。综合研究认为,二连盆地上古生界受深大断裂控制,在西拉木伦河断裂以北上古生界残余厚度较大,并形成两个厚度中心,即二连—苏尼特右旗厚度中心和西乌珠穆沁旗—东乌珠穆沁旗厚度中心。前者厚度为3000m,后者上古生界厚度大、分布广,最厚可达6300m,是后续研究的重要目标区。
Erlian Basin is a middle-scale oilfiled of China.Our work in the basin is as follows:merging and process gravity and magnetic data acquired in the basin,analyzing the geological implications of the data,and finally predicting Upper Paleozoic structures together with available seismic data.The comprehensive study concludes that Upper Paleozoic formations are dominantly controlled by big deep faults in the basin.In the north of the Xilamulun-River fault,the residual Upper Paleozoic formations have the big thickness.There are two thickness centers,i.e.Erlian-Suyouqi Zone and Xiwuqi-Dongwuqi Zone.The maximum thickness of the former is about 3000 m,and the maximum thickness of the later is about 6300 m.Both of them have not only big thickness but also a wide coverage,and are considered as future potential targets.
Erlian Basin is a middle-scale oilfiled of China.Our work in the basin is as follows:merging and process gravity and magnetic data acquired in the basin,analyzing the geological implications of the data,and finally predicting Upper Paleozoic structures together with available seismic data.The comprehensive study concludes that Upper Paleozoic formations are dominantly controlled by big deep faults in the basin.In the north of the Xilamulun-River fault,the residual Upper Paleozoic formations have the big thickness.There are two thickness centers,i.e.Erlian-Suyouqi Zone and Xiwuqi-Dongwuqi Zone.The maximum thickness of the former is about 3000 m,and the maximum thickness of the later is about 6300 m.Both of them have not only big thickness but also a wide coverage,and are considered as future potential targets.
引文
[1]张兴洲等.东北地区晚古生代构造演化及其石油地质意义.地质通报,2011,30(2,3):205～213Zhang Xingzhou et al.Late-Paleozoic tectonic evolu-tion and oil-gas potentiality in northeastern China.Ge-ological Bulletin of China,2011,30(2,3):205～213
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[3]韩春元等.内蒙古二连盆地上古生界油气勘探前景.地质通报,2011,30(2,3):243～249Han Chunyuan et al.Exploration prospect of hydro-carbon of Neopaleozoic in Erlian basin,Inner Mongo-lia,China.Geological Bulletin of China,2011,30(2,3):243～249
[4]崔永谦等.内蒙古二连盆地深层地球物理特征和上古生界的地质结构.地质通报,2011,30(2,3):235～242Cui Yongqian et al.The deep physical geographiccharacteristics and Neopaleozoic geological structuralexploration of Erlian basin,Inner Mongolia,China.Geological Bulletin of China,2011,30(2,3):235～242
[5]程三友,刘少峰,苏三等.二连盆地赛汉塔拉凹陷构造特征分析.石油地球物理勘探,2011,46(6):961～969Cheng Sanyou,Liu Shaofeng,Su San et al.Structuralcharacteristics analysis of Saihantala sag in Erlian Ba-sin.OGP,2011,46(6):961～969
[6]江为为等.东北地区重磁场与地壳结构特征.地球物理学进展,2006,21(3):730～738Jiang Weiwei et al.The characteristics of crust struc-ture and the gravity and magnetic fields in northeastregion of China.Progress in Geophysics,2006,21(3):730～738
[2]张抗.中国大北方上古生界油气勘探新领域.地质通报,2011,30(6):803～810Zhang Kang.New domain of Upper Paleozoic hydro-carbon exploration in“Large North”of China.Geolog-ical Bulletin of China,2011,30(6):803～810
[3]韩春元等.内蒙古二连盆地上古生界油气勘探前景.地质通报,2011,30(2,3):243～249Han Chunyuan et al.Exploration prospect of hydro-carbon of Neopaleozoic in Erlian basin,Inner Mongo-lia,China.Geological Bulletin of China,2011,30(2,3):243～249
[4]崔永谦等.内蒙古二连盆地深层地球物理特征和上古生界的地质结构.地质通报,2011,30(2,3):235～242Cui Yongqian et al.The deep physical geographiccharacteristics and Neopaleozoic geological structuralexploration of Erlian basin,Inner Mongolia,China.Geological Bulletin of China,2011,30(2,3):235～242
[5]程三友,刘少峰,苏三等.二连盆地赛汉塔拉凹陷构造特征分析.石油地球物理勘探,2011,46(6):961～969Cheng Sanyou,Liu Shaofeng,Su San et al.Structuralcharacteristics analysis of Saihantala sag in Erlian Ba-sin.OGP,2011,46(6):961～969
[6]江为为等.东北地区重磁场与地壳结构特征.地球物理学进展,2006,21(3):730～738Jiang Weiwei et al.The characteristics of crust struc-ture and the gravity and magnetic fields in northeastregion of China.Progress in Geophysics,2006,21(3):730～738
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