准噶尔盆地南缘盆地轮廓和构造属性及页岩气战略选区的重磁电勘探研究
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摘要
准噶尔盆地油气资源丰富,位于准噶尔盆地与北天山结合部位的准噶尔盆地南缘,构造复杂,地震方法应用效果不理想,因此利用综合地球物理方法圈定研究区页岩气产出层位二叠系芦草沟组的分布深度与范围。通过200块岩石标本物性测量,获得了研究区主要地层密度、磁化率、极化率及电阻率等物性参数:研究区主要为沉积岩系,磁性普遍较弱,其中二叠系地层较三叠系地层磁性小;各地层密度差异不大,其中砂岩密度常见值2.61×10~(3 )kg/m~3、泥岩密度常见值2.56×10~(3 )kg/m~3、页岩密度常见值2.54×10~(3 )kg/m~3;各地层电性特征差异较大,电阻率特征呈现如下关系:砂岩>泥岩>页岩。对实测重力、磁法、大地电磁测深等地球物理数据进行处理及反演,得到了研究区布格重力异常平面等值线图、磁异常平面等值线图及大地电磁三维反演电阻率结构模型图。研究区东南部主要表现为高布格重力异常、负磁异常特征,布格重力异常峰值为9.5×10~(-5 )m/s~2,磁异常峰值为-100 nT;西北部主要表现为低布格重力异常、正磁异常特征,布格重力异常峰值为-12×10~(-5 )m/s~2,磁异常峰值280 nT。MT三维反演结果显示芦草沟组a、b段分别为较高阻和中低阻。芦草沟组总体表现为中低重力、中低电阻、低磁异常特征。结合地质资料,建立了重磁电综合解释地质剖面。根据断裂破碎带表现为低重力、低电阻、低磁异常特征,新推断出研究区8条逆断层,并进一步推断了研究区芦草沟组地层空间展布特征,为下一步勘探井位论证提供了地球物理依据。
The Junggar basin is riched in oil and gas resources. Its southern margin,which located between the Junggar basin and the northern Tianshan Mountains,is geologically complicated,which makes seismic methods inapplicable. Thus,non-seismic geophysical methods were employed to determine geometrical features of the Lucaogou Formation of Permian which was supposed to be potential shale-gas deposit. With 200 pieces of rock samples of main rocks showed in research area, some geophysical properties, such as density, magnetic susceptibility,polarizability and resistivity were measured,and some statistically conclusions were obtained. The study area is dominated by sedimentary rocks,whose magnetic is generally weak. The magnetic of Permian strata is lower than the Triassic ones. The density difference of main strata is insignificant with average values of 2. 61 x 10~3 kg/m~3,2. 56 x 10~3 kg/m~3 and 2. 54 x 10~3 kg/m~3 of sandstones,mudstones and shales respectively. However,the resistivity difference of these rocks is large enough,and an obvious resistivity relationship of sandstone > mudstone> shale can be concluded. The gravity,magnetic and magnetotelluric sounding data were collected in the research area. After careful data processing and inversion,the Bouguer gravity and magnetic anomalies in map view and three-dimensional resistivity model were produced. The southeastern part of research area characterized by high Bouguer gravity anomaly and negative magnetic anomaly with their peak values of 9. 5 x 10~(-5) m/s~2 and-100 nT respectively. In contrast,the northwestern part showed low Bouguer gravity anomaly and positive magnetic anomaly with their values of -12 × 10~(-5) m/s~2 and 280 n T respectively. Integrated with geological data,the a and b parts of target layer of the Lucaogou Formation show relatively high and medium to low resistivity in the three-dimensional resistivity model respectively. The strata of research area were deduced by integrated interpretation of gravity,magnetic data and resistivity model. Furthermore,eight thrust faults were deduced since faults are characterized with low resistivity,low gravity and low magnetic anomaly. Based on these new deduced thrust faults in the study area,the spatial distribution of the Lucaogou Formation was deduced,with which the positions of exploration wells were suggested.
The Junggar basin is riched in oil and gas resources. Its southern margin,which located between the Junggar basin and the northern Tianshan Mountains,is geologically complicated,which makes seismic methods inapplicable. Thus,non-seismic geophysical methods were employed to determine geometrical features of the Lucaogou Formation of Permian which was supposed to be potential shale-gas deposit. With 200 pieces of rock samples of main rocks showed in research area, some geophysical properties, such as density, magnetic susceptibility,polarizability and resistivity were measured,and some statistically conclusions were obtained. The study area is dominated by sedimentary rocks,whose magnetic is generally weak. The magnetic of Permian strata is lower than the Triassic ones. The density difference of main strata is insignificant with average values of 2. 61 x 10~3 kg/m~3,2. 56 x 10~3 kg/m~3 and 2. 54 x 10~3 kg/m~3 of sandstones,mudstones and shales respectively. However,the resistivity difference of these rocks is large enough,and an obvious resistivity relationship of sandstone > mudstone> shale can be concluded. The gravity,magnetic and magnetotelluric sounding data were collected in the research area. After careful data processing and inversion,the Bouguer gravity and magnetic anomalies in map view and three-dimensional resistivity model were produced. The southeastern part of research area characterized by high Bouguer gravity anomaly and negative magnetic anomaly with their peak values of 9. 5 x 10~(-5) m/s~2 and-100 nT respectively. In contrast,the northwestern part showed low Bouguer gravity anomaly and positive magnetic anomaly with their values of -12 × 10~(-5) m/s~2 and 280 n T respectively. Integrated with geological data,the a and b parts of target layer of the Lucaogou Formation show relatively high and medium to low resistivity in the three-dimensional resistivity model respectively. The strata of research area were deduced by integrated interpretation of gravity,magnetic data and resistivity model. Furthermore,eight thrust faults were deduced since faults are characterized with low resistivity,low gravity and low magnetic anomaly. Based on these new deduced thrust faults in the study area,the spatial distribution of the Lucaogou Formation was deduced,with which the positions of exploration wells were suggested.
引文
白云来.2008.准噶尔盆地东南缘油页岩的开发前景.新疆石油地质,29(4):462～465.
陈新,卢华复,舒良树,王惠民,张国清.2002.准噶尔盆地构造演化分析新进展.高校地质学报,8(3):257～267.
陈业全,王伟锋.2004.准噶尔盆地构造动力学过程.地质力学学报,10(2):155～164.
陈正乐,鲁克政,王果,陈柏林,王国荣,郑恩玖,崔玲玲,丁文君.2010.准噶尔盆地南缘新生代构造特征及其与砂岩型铀矿成矿作用初析.岩石学报,26(2):457～470.
董大忠,邹才能,李建忠,王社教,李新景,王玉满,李登华,黄金亮.2011.页岩气资源潜力与勘探开发前景.地质通报,30(2～3):324～336.
康玉柱.2003.准噶尔盆地天山山前油气前景展望.新疆地质,21(2):163～166.
李靖,赵明.2015.吐哈盆地中侏罗统西山窑组页岩气成藏条件分析.地质评论,61(增1):233～234.
林文斌,刘滨.2013.北美页岩气政策研究及启示.清华大学学报(自然科学版),(4):437～441+446.
漆家福,陈书平,杨桥,于福生.2008.准噶尔—北天山盆山过渡带构造基本特征.石油与天然气地质,29(2):252～282.
汪新伟,汪新文,马永生.2007.准噶尔盆地南缘褶皱—冲断带的构造变换带特征.石油与天然气地质,28(3):345～356.
王世谦,王书彦,满玲,董大忠,王玉满.2013.页岩气选区评价方法与关键参数.成都理工大学学报(自然科学版),40(6):609～620.
吴俊军,游利萍,杨和山.2013.准噶尔盆地阜康断裂带构造演化与油气成藏.新疆石油地质,34(1):36～40.
吴孔友,查明,曲江秀,田辉.2004.博格达山隆升对北三台地区构造形成与演化的控制作用.石油大学学报(自然科学版),28(2):1～5.
吴孔友,查明,王绪龙,曲江秀,陈新.2005.准噶尔盆地构造演化与动力学背景再认识.地球学报,26(3):217～222.
吴馨,任志勇,王勇,刘长海,李洋冰,赵都菁,曲日涛,齐玉民.2013.世界页岩气勘探开发现状.资源与产业,(5):61～67.
郗兆栋,唐书恒,王静,张振,李彦朋,龚明辉,肖何琦.2018.中国南方海相页岩气选区关键参数探讨.地质学报,92(6):1313～1323.
熊金红,梁明亮,曹占元,王宗秀,郑建京,王作栋.2017.准噶尔盆地南缘柴窝堡凹陷泥页岩地球化学和矿物学特征研究.地质力学学报,23(4):585～593.
熊小辉,王剑,熊国庆,汪正江,门玉澎,周小琳,周业鑫,杨潇,邓奇.2018.渝东北地区五峰组—龙马溪组页岩气地质特征及其勘探方向探讨.地质学报,92(9):1948～1958.
臧明峰,吴孔友.2009.准噶尔盆地南缘大龙口地区构造建模.断块油气田,16(4):11～14.
张东晓,杨婷云.2013.页岩气开发综述.石油学报,34(4):792～801.
郑金海,向才富,王绪龙,雷德文,杨楠,阿·布力米提,张磊,张越迁,王力宏.2015.准噶尔盆地阜康凹陷侏罗系烃源岩特征与页岩气勘探潜力分析.地质评论,61(1):217～226.
Bai Yunlai.2008&.Prospects for Development of Oil Shale Deposits in Southeastern Margin of Junggar Basin.Xinjiang Petroleum Geology,29(4):462～465.
Chen Xin,Lu Huafu,Shu Liangshu,Wang Huimin,Zhang Guoqing.2002&.Study on Tectonic Evolution of Junggar Basin.Geological Journal of China Universities,8(3):257～267.
Chen Yequan,Wang Weifeng.2004&.Geodynamics Process in The Junggar Basin.Journal of Geomechanics,10(2):155～164.
Chen Zhengle,Lu Kegai,Wang Guo,Chen Bailin,Wang Guorong,Zheng Enjiu,Cui Lingling,Ding Wenjun.2010&.Characteristics of Cenozoic structural movements in southern margin of Junggar basin and its’relationship to the mineralization of sandstone-type uranium deposits.Acta Petrologica Sinica,26(2):457～470.
Dong Dazhong,Zou Caineng,Li Jianzhong,Wang Shejiao,Li Xinjing,Wang Yuman,Li Denghua,Huang Jinliang.2011&.Resource potential,exploration and development prospect of shale gas in the whole world.Geologcal Bulletin of China,30(23):324～336.
Kang Yuzhu .2003&.The prospects and suggestion of oilgas in front of Tiansan mountain in the southern fringe of Junnar basin.Xinjiang Geology,21(2):163～166.
Li Jing,Zhao Ming.2015#.Analysis of shale gas reservoir formation conditions of Middle Jurassic Xishanyao formation in Turpan—Hami Basin.Geological Review,61(Supp.1):233～234.
Lin Wenbin,Liu Bin.2013&.North American shale gas policy research findings.Journal of Tsinghua University (Science and Technology),(4):437～441+446.
Qi Jiafu,Chen Shuping,Yang Qiao ,Yu Fusheng.2008&.Characteristics of tectonic deformation within transitional belt between the Junggar Basin and the northern Tianshan Mountain.Oil & Gas Geology,29(2):252～282.
Wang Xinwei,Wang Xinwen,Ma Yongsheng.2007&.Characteristics of structure transform zones in the foldthrust belts on the southern margin of Junggar basin,Northwest China.Oil & Gas Geology,28(3):345～356.
Wang Shiqian,Wang Shuyan,Man Ling,Dong Dazhong,Wang Yuman.2013&.Appraisal method and key parameters for screening shale gas play.Journal of Chengdu University of Technology (Sci.& Technol.edition),40(6):609～620.
Wu Junjun,You Liping,Yang Heshan.2013&.Structural evolution and hydrocarbon accumulation of Fukang fault zone in Junggar Basin.Xinjiang Petroleum Geology,34(1):36～40.
Wu Kongyou,Zha Ming,Qu Jiangxiu,Tian Hui.2004&.Control of Bogeda mountain uplift on the structural formation and evolution in Beisantai region.Journal of the University of Petroleum,China(Edition of Natural Science),28(2):15.
Wu Kongyou,Zha Ming,Wang Xulong,Qu Jiangxiu,Chen Xin.2005&.Further Researches on the Tectonic Evolution and Dynamic Setting of the Junggar Basin.Acta Geoscientica Sinica,26(3):217～222.
Wu Xin,Ren Zhiyong,Wang Yong,Liu Zhanghai,Li Yangbing,Zhao Dujing,Qu Ritao,Qi Yumin.2013&.Situation of world shale gas exploration and development.Resources & Industries,(5):61～67.
Xi Zhaodong,Tang Shuheng,Wang Jing,Zhang Zhen,Li Yanpeng,Gong Minghui,Xiao Heqi.2018&.Discussion on key parameters of marine shale gas selection area in south China.Acta Geologica Sinica,92(6):1313～1323.
Xiong Jinhong,Liang Mingliang,Cao Zhanyuan,Wang Zongxiu,Zheng Jianjing,Wang Zuodong.2017&.The geochemical and mineralogical characteristics of shales in Chaiwobu Depression,southern margin of Junggar Basin.Journal of Geomechanics,23(4):585～593.
Xiong Xiaohui,Wang Jian,Xiong Guoqing,Wang Zhengjiang,Men Yupeng,Zhou Xiaolin,Zhou Yexing,Yang Xiao,Deng Qi.2018&.Shale gas geological characteristics of the Wufeng and Longmaxi Formations in northeast Chongqing and its exploration direction.Acta Geologica Sinica,92(9):1948～1958.
Zang Mingfeng,Wu Kongyou.2009.Structure modeling of Dalongkou region in southern margin of Junggar Basin.Fault Block Oil & Gas Field,16(4):11～14.
Zhang Dongxiao Yang Tingyun.2013&.An overview of shalegas production.Acta Petrolei Sinica,61(1):217～226.
Zheng Jinhai,Xiang Caifu,Wang Xulong,Lei Dewen,Yang Nan ,A Bulimiti,Zhang Lei,Zhang Yueqian,Wang Lihong.2015&.Characteristics of the Jurassic source rocks and their shale gas exploration potential in the Fukang Sag of the Junggar Basin.Geological Review,61(1):217～226.
陈新,卢华复,舒良树,王惠民,张国清.2002.准噶尔盆地构造演化分析新进展.高校地质学报,8(3):257～267.
陈业全,王伟锋.2004.准噶尔盆地构造动力学过程.地质力学学报,10(2):155～164.
陈正乐,鲁克政,王果,陈柏林,王国荣,郑恩玖,崔玲玲,丁文君.2010.准噶尔盆地南缘新生代构造特征及其与砂岩型铀矿成矿作用初析.岩石学报,26(2):457～470.
董大忠,邹才能,李建忠,王社教,李新景,王玉满,李登华,黄金亮.2011.页岩气资源潜力与勘探开发前景.地质通报,30(2～3):324～336.
康玉柱.2003.准噶尔盆地天山山前油气前景展望.新疆地质,21(2):163～166.
李靖,赵明.2015.吐哈盆地中侏罗统西山窑组页岩气成藏条件分析.地质评论,61(增1):233～234.
林文斌,刘滨.2013.北美页岩气政策研究及启示.清华大学学报(自然科学版),(4):437～441+446.
漆家福,陈书平,杨桥,于福生.2008.准噶尔—北天山盆山过渡带构造基本特征.石油与天然气地质,29(2):252～282.
汪新伟,汪新文,马永生.2007.准噶尔盆地南缘褶皱—冲断带的构造变换带特征.石油与天然气地质,28(3):345～356.
王世谦,王书彦,满玲,董大忠,王玉满.2013.页岩气选区评价方法与关键参数.成都理工大学学报(自然科学版),40(6):609～620.
吴俊军,游利萍,杨和山.2013.准噶尔盆地阜康断裂带构造演化与油气成藏.新疆石油地质,34(1):36～40.
吴孔友,查明,曲江秀,田辉.2004.博格达山隆升对北三台地区构造形成与演化的控制作用.石油大学学报(自然科学版),28(2):1～5.
吴孔友,查明,王绪龙,曲江秀,陈新.2005.准噶尔盆地构造演化与动力学背景再认识.地球学报,26(3):217～222.
吴馨,任志勇,王勇,刘长海,李洋冰,赵都菁,曲日涛,齐玉民.2013.世界页岩气勘探开发现状.资源与产业,(5):61～67.
郗兆栋,唐书恒,王静,张振,李彦朋,龚明辉,肖何琦.2018.中国南方海相页岩气选区关键参数探讨.地质学报,92(6):1313～1323.
熊金红,梁明亮,曹占元,王宗秀,郑建京,王作栋.2017.准噶尔盆地南缘柴窝堡凹陷泥页岩地球化学和矿物学特征研究.地质力学学报,23(4):585～593.
熊小辉,王剑,熊国庆,汪正江,门玉澎,周小琳,周业鑫,杨潇,邓奇.2018.渝东北地区五峰组—龙马溪组页岩气地质特征及其勘探方向探讨.地质学报,92(9):1948～1958.
臧明峰,吴孔友.2009.准噶尔盆地南缘大龙口地区构造建模.断块油气田,16(4):11～14.
张东晓,杨婷云.2013.页岩气开发综述.石油学报,34(4):792～801.
郑金海,向才富,王绪龙,雷德文,杨楠,阿·布力米提,张磊,张越迁,王力宏.2015.准噶尔盆地阜康凹陷侏罗系烃源岩特征与页岩气勘探潜力分析.地质评论,61(1):217～226.
Bai Yunlai.2008&.Prospects for Development of Oil Shale Deposits in Southeastern Margin of Junggar Basin.Xinjiang Petroleum Geology,29(4):462～465.
Chen Xin,Lu Huafu,Shu Liangshu,Wang Huimin,Zhang Guoqing.2002&.Study on Tectonic Evolution of Junggar Basin.Geological Journal of China Universities,8(3):257～267.
Chen Yequan,Wang Weifeng.2004&.Geodynamics Process in The Junggar Basin.Journal of Geomechanics,10(2):155～164.
Chen Zhengle,Lu Kegai,Wang Guo,Chen Bailin,Wang Guorong,Zheng Enjiu,Cui Lingling,Ding Wenjun.2010&.Characteristics of Cenozoic structural movements in southern margin of Junggar basin and its’relationship to the mineralization of sandstone-type uranium deposits.Acta Petrologica Sinica,26(2):457～470.
Dong Dazhong,Zou Caineng,Li Jianzhong,Wang Shejiao,Li Xinjing,Wang Yuman,Li Denghua,Huang Jinliang.2011&.Resource potential,exploration and development prospect of shale gas in the whole world.Geologcal Bulletin of China,30(23):324～336.
Kang Yuzhu .2003&.The prospects and suggestion of oilgas in front of Tiansan mountain in the southern fringe of Junnar basin.Xinjiang Geology,21(2):163～166.
Li Jing,Zhao Ming.2015#.Analysis of shale gas reservoir formation conditions of Middle Jurassic Xishanyao formation in Turpan—Hami Basin.Geological Review,61(Supp.1):233～234.
Lin Wenbin,Liu Bin.2013&.North American shale gas policy research findings.Journal of Tsinghua University (Science and Technology),(4):437～441+446.
Qi Jiafu,Chen Shuping,Yang Qiao ,Yu Fusheng.2008&.Characteristics of tectonic deformation within transitional belt between the Junggar Basin and the northern Tianshan Mountain.Oil & Gas Geology,29(2):252～282.
Wang Xinwei,Wang Xinwen,Ma Yongsheng.2007&.Characteristics of structure transform zones in the foldthrust belts on the southern margin of Junggar basin,Northwest China.Oil & Gas Geology,28(3):345～356.
Wang Shiqian,Wang Shuyan,Man Ling,Dong Dazhong,Wang Yuman.2013&.Appraisal method and key parameters for screening shale gas play.Journal of Chengdu University of Technology (Sci.& Technol.edition),40(6):609～620.
Wu Junjun,You Liping,Yang Heshan.2013&.Structural evolution and hydrocarbon accumulation of Fukang fault zone in Junggar Basin.Xinjiang Petroleum Geology,34(1):36～40.
Wu Kongyou,Zha Ming,Qu Jiangxiu,Tian Hui.2004&.Control of Bogeda mountain uplift on the structural formation and evolution in Beisantai region.Journal of the University of Petroleum,China(Edition of Natural Science),28(2):15.
Wu Kongyou,Zha Ming,Wang Xulong,Qu Jiangxiu,Chen Xin.2005&.Further Researches on the Tectonic Evolution and Dynamic Setting of the Junggar Basin.Acta Geoscientica Sinica,26(3):217～222.
Wu Xin,Ren Zhiyong,Wang Yong,Liu Zhanghai,Li Yangbing,Zhao Dujing,Qu Ritao,Qi Yumin.2013&.Situation of world shale gas exploration and development.Resources & Industries,(5):61～67.
Xi Zhaodong,Tang Shuheng,Wang Jing,Zhang Zhen,Li Yanpeng,Gong Minghui,Xiao Heqi.2018&.Discussion on key parameters of marine shale gas selection area in south China.Acta Geologica Sinica,92(6):1313～1323.
Xiong Jinhong,Liang Mingliang,Cao Zhanyuan,Wang Zongxiu,Zheng Jianjing,Wang Zuodong.2017&.The geochemical and mineralogical characteristics of shales in Chaiwobu Depression,southern margin of Junggar Basin.Journal of Geomechanics,23(4):585～593.
Xiong Xiaohui,Wang Jian,Xiong Guoqing,Wang Zhengjiang,Men Yupeng,Zhou Xiaolin,Zhou Yexing,Yang Xiao,Deng Qi.2018&.Shale gas geological characteristics of the Wufeng and Longmaxi Formations in northeast Chongqing and its exploration direction.Acta Geologica Sinica,92(9):1948～1958.
Zang Mingfeng,Wu Kongyou.2009.Structure modeling of Dalongkou region in southern margin of Junggar Basin.Fault Block Oil & Gas Field,16(4):11～14.
Zhang Dongxiao Yang Tingyun.2013&.An overview of shalegas production.Acta Petrolei Sinica,61(1):217～226.
Zheng Jinhai,Xiang Caifu,Wang Xulong,Lei Dewen,Yang Nan ,A Bulimiti,Zhang Lei,Zhang Yueqian,Wang Lihong.2015&.Characteristics of the Jurassic source rocks and their shale gas exploration potential in the Fukang Sag of the Junggar Basin.Geological Review,61(1):217～226.
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