三维大地电磁测深在库车坳陷库车组岩性判别中的应用
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摘要
三维大地电磁测深(MT)资料用于沉积相分布的研究中,弥补了野外露头、测井和地震等传统识别和研究方法的不足。通过对三维MT资料进行去噪、编辑与平滑和静态位移校正等预处理和三维反演处理,使三维MT数据更加准确地反映研究地区岩石的电阻率。在野外露头观察和测井解释成果的基础上,利用岩芯或岩屑对电阻率进行标定,界定出库车组不同岩性的电阻率值范围,然后将三维MT剖面与相对应的地震剖面叠合,进行电震同平台解释,建立构造样式,最终在建立的地层格架内对沉积相分布特征进行精细的识别和研究,该方法在库车坳陷库车组沉积相识别及分布研究中取得了良好的应用效果,解决了井间相带变化和地震相特征不明显带来的研究困难,对研究沉积相带分布和沉积相演化等基础石油地质研究具有重大的意义。
In order to make up for the shortcomings of traditional recognition and research methods, such as the field outcrop, logging and earthquake and so on, 3D Magnetotelluric(MT) is used for the research of sedimentary facies. Through to 3D MT data pretreatment, such as de-noising, editing and smothing, static shift correction and so on, and 3D inversion treatment, it is more accurate to reflect the resistivity of sediments from study area. Based on the observation of field outcrop and well logging interpretation, the resistivity value range of different rocks of the Kuqa Fomation is determined, which is calibrated by cores or cuttings. And then stratigraphic framework is established by corrected 3D MT profile congruent to seismic profile. Finally sedimentary facies in the period of Kuqa Formation are recognized and researched finely in stratigraphic framework. The method has obtained favorable application effects in the recognition and research of spatial distribution characteristic of sedimentary facies in the period of Kuqa Formation in the Kuqa Depression. What is more, the problems of sedimentary facies belt changed among wells and unconspicuous characteristics of seismic facies are solved, which is significant to research base oil geological such as distribution of sedimentary facies, sedimentary evolution and so on.
In order to make up for the shortcomings of traditional recognition and research methods, such as the field outcrop, logging and earthquake and so on, 3D Magnetotelluric(MT) is used for the research of sedimentary facies. Through to 3D MT data pretreatment, such as de-noising, editing and smothing, static shift correction and so on, and 3D inversion treatment, it is more accurate to reflect the resistivity of sediments from study area. Based on the observation of field outcrop and well logging interpretation, the resistivity value range of different rocks of the Kuqa Fomation is determined, which is calibrated by cores or cuttings. And then stratigraphic framework is established by corrected 3D MT profile congruent to seismic profile. Finally sedimentary facies in the period of Kuqa Formation are recognized and researched finely in stratigraphic framework. The method has obtained favorable application effects in the recognition and research of spatial distribution characteristic of sedimentary facies in the period of Kuqa Formation in the Kuqa Depression. What is more, the problems of sedimentary facies belt changed among wells and unconspicuous characteristics of seismic facies are solved, which is significant to research base oil geological such as distribution of sedimentary facies, sedimentary evolution and so on.
引文
董浩斌,王传雷.2003.浅谈高密度电法几个问题.地质与勘探,39(增刊):120～125.
傅良魁.1983.电法勘探教程.北京:地质出版社.
高卫富,翟培合,施龙青.2011.三维高密度电法在煤矿斑裂区探测中的应用.工程地球物理学报,8(1):34～37.
贾进华,顾家裕,郭庆银,皮学军,王月华,邹义声.2001.塔里木盆地克拉2气田白垩系沉积相与储层特征.古地理学报,3(3):67～75.
李德春,杨书江,胡祖志,赵志,李勇,钟大康,孙卫斌,冀连胜.2012.三维重磁电震资料的联合解释──以库车大北地区山前砾石层为例.石油地球物理勘探,47(2):353～359.
李颜贵,刘子龙,罗水余.2009.三维高密度电法用于工程勘查的试验.煤田地质与勘探,37(6):71～73.
李曰俊,吴根耀,雷刚林,张敬洲,王月然,刘亚雷.2008.新疆库车新生代前陆褶皱冲断带的变形特征、时代和机制.地质科学,43(3):488～506.
刘景彦,林畅松,肖建新.2003.库车坳陷古近系层序和沉积体系发育特征.煤田地质与勘探,31(6):8～10.
卢华复,陈楚铭,刘志宏,贾东,王国强,贾承造.2000.库车再生前陆逆冲带的构造特征与成因.石油学报,21(3):18～24.
罗延钟,万乐,董浩斌,熊彬,王传雷.2003.高密度电阻率法的2.5维反演.地质与勘探,39(增刊):107～113.
王一新.1982.电法在石油勘探中是大有可为的.石油物探,(4):122～123.
王永涛,陈高,何展翔,刘海波,李锁镇.2008.南方某碳酸盐岩裸露地区重磁电三维采集技术.中国石油勘探,3:50～55.
文百红,杨辉,张研.2005.中国石油非地震勘探技术应用现状及发展趋势.石油勘探与开发,32(2):68～71.
曾庆全,孔繁恕,郑莉,冀连胜,江汶波.2003.库车前陆盆地重磁电勘探述评.石油学报,24(3):28～33.
张朝军,田在艺.1998.塔里木盆地库车坳陷第三系盐构造与油气.石油学报,19(1):16～20.
周兴熙.2000.库车坳陷第三系盐膏质盖层特征及其对油气成藏的控制作用.古地理学报,2(04):57～63.
Egbert G D,Booker J R.1986.Robust estimation of geomagnetictransfer function.Geophysical Journal of the Royal AstronomicalSociety,87(1):175～194.
Eidesmo T,Ellingsrud S,Macgregor L M,Constable S,Sinha M C,Johansen S,Kong F N,Westerdahl H.2002.Sea Bed Logging(SBL),a new method for remote and direct identification ofhydrocarbon filled layers in deepwater areas.First Brea,20(3):144～152.
144～152.Kulik S N,Burakhovich T K.2007.A three-dimensional crustalgeoelectric model of the Ukrainian Shield.Izvestiya Physics of theSolid Earth,43(4):284～289.
Lu Huafu,Jia Dong,Cai Dongsheng.1994.Rejuvenation of the Kuqaforeland basin,northern flank of the Tarim basin,northwest China.International Geology Review,36(12):1151～1158.
Dey A,Morrison H F.1979.Resistivity modeling for arbitrarily shapedthree-dimensional structures.Geophysics,44(4):53～78.
Mathur N,Raju S V,Kulkarni T G.2001.Improved identification ofpay zones through integration of geochemical and log data:A casestudy from Upper Assam basin,Inda.AAPG Bulletin,85(2):309～323.
Sternberg B K,Washburne J C,Pekkerub L.1988.Correction for thestatic shift in magnetotellurics using transient electromagneticsounding.Geophysics,53(11):967～978.
Sun Weibin,Deng Yuyou,Wang Caifu,Hu Zuzhi,Lin Cunguo.2007.Deep structure study in complex area by3D MT date.SEGTechincal Prograrn Expanded Abstracts,26:683～687.
傅良魁.1983.电法勘探教程.北京:地质出版社.
高卫富,翟培合,施龙青.2011.三维高密度电法在煤矿斑裂区探测中的应用.工程地球物理学报,8(1):34～37.
贾进华,顾家裕,郭庆银,皮学军,王月华,邹义声.2001.塔里木盆地克拉2气田白垩系沉积相与储层特征.古地理学报,3(3):67～75.
李德春,杨书江,胡祖志,赵志,李勇,钟大康,孙卫斌,冀连胜.2012.三维重磁电震资料的联合解释──以库车大北地区山前砾石层为例.石油地球物理勘探,47(2):353～359.
李颜贵,刘子龙,罗水余.2009.三维高密度电法用于工程勘查的试验.煤田地质与勘探,37(6):71～73.
李曰俊,吴根耀,雷刚林,张敬洲,王月然,刘亚雷.2008.新疆库车新生代前陆褶皱冲断带的变形特征、时代和机制.地质科学,43(3):488～506.
刘景彦,林畅松,肖建新.2003.库车坳陷古近系层序和沉积体系发育特征.煤田地质与勘探,31(6):8～10.
卢华复,陈楚铭,刘志宏,贾东,王国强,贾承造.2000.库车再生前陆逆冲带的构造特征与成因.石油学报,21(3):18～24.
罗延钟,万乐,董浩斌,熊彬,王传雷.2003.高密度电阻率法的2.5维反演.地质与勘探,39(增刊):107～113.
王一新.1982.电法在石油勘探中是大有可为的.石油物探,(4):122～123.
王永涛,陈高,何展翔,刘海波,李锁镇.2008.南方某碳酸盐岩裸露地区重磁电三维采集技术.中国石油勘探,3:50～55.
文百红,杨辉,张研.2005.中国石油非地震勘探技术应用现状及发展趋势.石油勘探与开发,32(2):68～71.
曾庆全,孔繁恕,郑莉,冀连胜,江汶波.2003.库车前陆盆地重磁电勘探述评.石油学报,24(3):28～33.
张朝军,田在艺.1998.塔里木盆地库车坳陷第三系盐构造与油气.石油学报,19(1):16～20.
周兴熙.2000.库车坳陷第三系盐膏质盖层特征及其对油气成藏的控制作用.古地理学报,2(04):57～63.
Egbert G D,Booker J R.1986.Robust estimation of geomagnetictransfer function.Geophysical Journal of the Royal AstronomicalSociety,87(1):175～194.
Eidesmo T,Ellingsrud S,Macgregor L M,Constable S,Sinha M C,Johansen S,Kong F N,Westerdahl H.2002.Sea Bed Logging(SBL),a new method for remote and direct identification ofhydrocarbon filled layers in deepwater areas.First Brea,20(3):144～152.
144～152.Kulik S N,Burakhovich T K.2007.A three-dimensional crustalgeoelectric model of the Ukrainian Shield.Izvestiya Physics of theSolid Earth,43(4):284～289.
Lu Huafu,Jia Dong,Cai Dongsheng.1994.Rejuvenation of the Kuqaforeland basin,northern flank of the Tarim basin,northwest China.International Geology Review,36(12):1151～1158.
Dey A,Morrison H F.1979.Resistivity modeling for arbitrarily shapedthree-dimensional structures.Geophysics,44(4):53～78.
Mathur N,Raju S V,Kulkarni T G.2001.Improved identification ofpay zones through integration of geochemical and log data:A casestudy from Upper Assam basin,Inda.AAPG Bulletin,85(2):309～323.
Sternberg B K,Washburne J C,Pekkerub L.1988.Correction for thestatic shift in magnetotellurics using transient electromagneticsounding.Geophysics,53(11):967～978.
Sun Weibin,Deng Yuyou,Wang Caifu,Hu Zuzhi,Lin Cunguo.2007.Deep structure study in complex area by3D MT date.SEGTechincal Prograrn Expanded Abstracts,26:683～687.
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