基于双磁性界面和变磁化率模型的居里面深度反演计算
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摘要
笔者提出了一种改进的Parker--Oldenburg界面反演方法,通过引入纵向磁化率变化和双界面模型约束反演算法,同时采用新的迭代算法来确保迭代收敛性和稳定性。通过理论模型对比测试,验证了本文方法相比于常规Parker--Oldenburg方法具有更高的反演精度。利用松辽盆地区域航磁数据,应用本文方法反演获得松辽盆地居里面深度为18～25 km,在松辽盆地中北部具有明显的居里面隆起,与区域地温梯度分布和地质构造分布有很好的一致性,论证了松辽盆地后期深部构造活动对前期深部构造形态的继承和改造,并揭示了松辽盆地地热开发远景区分布。
A improved Parker-Oldenburg algorithm has been proposed. The authors introduce the variable susceptibility factor and dual magnetic interface model to constrain the Parker--Oldenburg algorithm. Meanwhile,a new iterative algorithm is used to ensure the stability of iterative convergence. The comparison test of the theoretical models proves that the proposed method has higher inversion accuracy than the conventional Parker-Oldenburg method. Based on the aeromagnetic data of Songliao Basin,the Curie depth of Songliao Basin is 18 ～ 25 km obtained by using the method described in this paper. There exists an obvious Curie uplift in mid-northern Songliao Basin,which is consistent with the regional geothermal gradient and geological structure distribution. Above all,the late deep tectonic activity in Songliao Basin has inheritance and transformation from the early deep tectonic morphology,which revealed the important development prospect of geothermal in Songliao Basin.
A improved Parker-Oldenburg algorithm has been proposed. The authors introduce the variable susceptibility factor and dual magnetic interface model to constrain the Parker--Oldenburg algorithm. Meanwhile,a new iterative algorithm is used to ensure the stability of iterative convergence. The comparison test of the theoretical models proves that the proposed method has higher inversion accuracy than the conventional Parker-Oldenburg method. Based on the aeromagnetic data of Songliao Basin,the Curie depth of Songliao Basin is 18 ～ 25 km obtained by using the method described in this paper. There exists an obvious Curie uplift in mid-northern Songliao Basin,which is consistent with the regional geothermal gradient and geological structure distribution. Above all,the late deep tectonic activity in Songliao Basin has inheritance and transformation from the early deep tectonic morphology,which revealed the important development prospect of geothermal in Songliao Basin.
引文
[1]杨海．中国陆域居里面特征研究:博士学位论文[D]．成都:成都理工大学，2015.YANG Hai.Study on the Curie depth characteristics of China's land areas:doctor's degree thesis[D].Chengdu:Chengdu Univerisity of Technology,2015．
[2]Spector A,Grant F S.Statistical models for interpreting aeromagnetic data[J].Geophysics,1970,35(2):293-302．
[3]Bhattacharyya B K,Leu L K.Spectral analysis of gravity and magnetic anomalies due to rectangular prismatic bodies[J].Geophysics,1977,42(1):41-50．
[4]Parker R L.The rapid calculation of potential anomalies[J].Geophysical Journal International,1973,31(4):447-455．
[5]Oldenburg D W.The inversion and interpretation of gravity anomalies[J].Geophysics,1974,39(4):526-536．
[6]David Gómez-Ortiz.3DINVER M:a matlab program to invert the gravity anomaly over a 3D horizontal density subsurface by Parker-Oldenburg's algorithm[J].Computers&Geosciences,2005,31(4):513-520．
[7]王万银，潘作枢．双界面模型重力场快速正反演问题[J]．石油物探，1993,32(2):81-87.WANG Wan-yin,PAN Zuo-shu.Fast solution of forward and inverse problems for gravity field in a dual interface model[J].Geophysical Prospecting for Petroleum,1993,32(2):81-87．
[8]相鹏，刘展．基于Parker算法的磁性双界面模式正反演研究[J]．石油天然气学报，2008,30(3):78-82.XIANG Peng,LIU Zhan.Magnetic interfacial inversion using dual interface pattern based on Parker algorithm[J].Journal of Oil and Gas Technology,2008,30(3):78-82．
[9]冯娟，孟小红，陈召曦，等．三维密度界面的正反演研究和应用[J]．地球物理学报，2014,57(1):287-294.FENG Juan,MENG Xiao-hong,CHEN Zhao-xi,et al.Research and application of 3D density interface[J].Geophysics,2014,57(1):287-294．
[10]肖鹏飞，陈生昌，孟令顺，等．高精度重力资料的密度界面反演[J]．物探与化探，2007,31(1):29-33.XIAO Peng-fei,CHEN Sheng-chang,MENG Lingshun,et al.The density interface inversion of high-precision gravity data[J].Geophysical&Geochemical Exploration,2007,31(1):29-33．
[11]ZHANG Chong,HUANG Da-nian.Calculation of Moho depth by gravity anomalies in Qinghai--Tibet plateau based on an improved iteration of Parker--Oldenburg inversion[J].Pure and Applied Geophysics,2015,172(10):2657-2668．
[12]徐世浙．位场延拓的积分-迭代法[J]．地球物理学报，2006,49(4):1176-1182.XU Shi-zhe.The integral-iteration method for continuation of potential fields[J].Geophysics,2006,49(4):1176-1182．
[13]朱焕来．松辽盆地北部沉积盆地型地热资源研究:博士学位论文[D]．大庆:东北石油大学，2011.ZHU Huan-lai.Study on sedimentary basin type geothermal resources in northern Songliao Basin:doctor's degree thesis[D].Daqing:Northeast Petroleum University,2011．
[14]刘耀光．松辽盆地地热场特征与油气勘探的关系[J]．石油勘探与开发，1982(3):29-34.LIU Yao-guang.Relationship between geothermal field characteristics and oil and gas exploration in Songliao Basin[J].Petroleum Exploration and Development,1982(3):29-34．
[15]杨光，赵占银，王建强．松辽盆地长岭断陷烃类气藏主控因素及分布[J]．世界地质，2010,29(4):622-627.YANG Guang,ZHAO Zhan-yin,WANG Jian-qiang.Main controlling factors and distribution of hydrocarbon gas reservoirs in Changling fault depression of Songliao Basin[J].Global Geology,2010,29(4):622-627．
[16]万双双．松辽盆地北部构造演化研究:硕士学位论文[D]．成都:成都理工大学，2012.WAN Shuang-shuang.Study on tectonic evolution in northern Songliao basin:master's degree thesis[D].Chengdu:Chengdu Univerisity of Technology,2012．
[17]张元高．松辽盆地北部古中央隆起带深层构造研究及基底岩性预测:硕士学位论文[D]．大庆:大庆石油学院，2006.ZHANG Yuan-gao.Study on deep structure and prediction of basement lithology in the paleo-central uplift belt in northern Songliao Basin:master's degree thesis[D].Daqing:Daqing Petroleum Institute,2006．
[18]刘哲，单玄龙，衣健．松辽盆地长岭断陷火山岩储层对天然气成藏的控制作用[J]．世界地质，2017,36(3):880-888.LIU Zhe,SHAN Xuan-long,YI Jian.The controlling effect of volcanic rock reservoir on gas accumulation in Changling fault depression of Songliao Basin[J].Global Geology,2017,36(3):880-888．
[19]姜丽娜，夏丹，朱政源．致密砂岩储层与常规砂岩储层成藏动力学特征的差异性:以松辽盆地北部三肇地区扶余油层砂岩储层为例[J]．世界地质，2018,37(1):199-206.JIANG Li-na,XIA Dan,ZHU Zheng-yuan.Differences in reservoir formation dynamics between tight sandstone reservoirs and conventional sandstone reservoirs:a case study of Fuyu oil layer sandstone reservoirs in Sanzhao area of northern Songliao Basin[J].Global Geology,2018,37(1):199-206．
[20]HE Chuan-song,DONG Shu-wen,CHEN Xuan-hua,et al.Seismic evidence for plume-induced rifting in the Songliao Basin of Northeast China[J].Tectonophysics,2014,627:171-181．
[21]肖龙，王方正，王华，等．地幔柱构造对松辽盆地及渤海湾盆地形成的制约[J]．地球科学，2004,29(3):283-292.XIAO Long,WANG Fang-zheng,WANG Hua,et al.Mantle plume structure restricts the formation of Songliao Basin and Bohai bay basin[J].Earth Science,2004,29(3):283-292．
[22]张尔华，姜传金，张元高，等．徐家围子断陷深层结构形成与演化的探讨[J]．岩石学报，2010,26(1):149-157.ZHANG Er-hua,JIANG Chuan-jin,ZHANG Yuan-gao,et al.Discussion on the formation and evolution of the deep structure of Xujiaweizi fault depression[J].Acta Petrologica Sinica,2010,26(1):149-157．
[23]吴真玮，曾昭发，李静，等．基于重磁场特征的松辽盆地基底岩性研究[J]．地质与勘探，2015,51(5):939-945.WU Zhen-wei,ZENG Zhao-fa,LI Jing,et al.Distribution of basement lithology in the Songliao Basin derived from gravity and magnetic anomalies[J].Geology and Exploration,2015,51(5):939-945．
[24]赵雪宇，曾昭发，吴真玮，等．利用地球物理方法圈定松辽盆地干热岩靶区[J]．地球物理学进展，2015,30(6):2863-2869.ZHAO Xue-yu,ZENG Zhao-fa,WU Zhen-wei,et al.The dry hot rock target area in Songliao Basin is delineated by geophysical method[J].Progress in Geophysics2015,30(6):2863-2869.
[2]Spector A,Grant F S.Statistical models for interpreting aeromagnetic data[J].Geophysics,1970,35(2):293-302．
[3]Bhattacharyya B K,Leu L K.Spectral analysis of gravity and magnetic anomalies due to rectangular prismatic bodies[J].Geophysics,1977,42(1):41-50．
[4]Parker R L.The rapid calculation of potential anomalies[J].Geophysical Journal International,1973,31(4):447-455．
[5]Oldenburg D W.The inversion and interpretation of gravity anomalies[J].Geophysics,1974,39(4):526-536．
[6]David Gómez-Ortiz.3DINVER M:a matlab program to invert the gravity anomaly over a 3D horizontal density subsurface by Parker-Oldenburg's algorithm[J].Computers&Geosciences,2005,31(4):513-520．
[7]王万银，潘作枢．双界面模型重力场快速正反演问题[J]．石油物探，1993,32(2):81-87.WANG Wan-yin,PAN Zuo-shu.Fast solution of forward and inverse problems for gravity field in a dual interface model[J].Geophysical Prospecting for Petroleum,1993,32(2):81-87．
[8]相鹏，刘展．基于Parker算法的磁性双界面模式正反演研究[J]．石油天然气学报，2008,30(3):78-82.XIANG Peng,LIU Zhan.Magnetic interfacial inversion using dual interface pattern based on Parker algorithm[J].Journal of Oil and Gas Technology,2008,30(3):78-82．
[9]冯娟，孟小红，陈召曦，等．三维密度界面的正反演研究和应用[J]．地球物理学报，2014,57(1):287-294.FENG Juan,MENG Xiao-hong,CHEN Zhao-xi,et al.Research and application of 3D density interface[J].Geophysics,2014,57(1):287-294．
[10]肖鹏飞，陈生昌，孟令顺，等．高精度重力资料的密度界面反演[J]．物探与化探，2007,31(1):29-33.XIAO Peng-fei,CHEN Sheng-chang,MENG Lingshun,et al.The density interface inversion of high-precision gravity data[J].Geophysical&Geochemical Exploration,2007,31(1):29-33．
[11]ZHANG Chong,HUANG Da-nian.Calculation of Moho depth by gravity anomalies in Qinghai--Tibet plateau based on an improved iteration of Parker--Oldenburg inversion[J].Pure and Applied Geophysics,2015,172(10):2657-2668．
[12]徐世浙．位场延拓的积分-迭代法[J]．地球物理学报，2006,49(4):1176-1182.XU Shi-zhe.The integral-iteration method for continuation of potential fields[J].Geophysics,2006,49(4):1176-1182．
[13]朱焕来．松辽盆地北部沉积盆地型地热资源研究:博士学位论文[D]．大庆:东北石油大学，2011.ZHU Huan-lai.Study on sedimentary basin type geothermal resources in northern Songliao Basin:doctor's degree thesis[D].Daqing:Northeast Petroleum University,2011．
[14]刘耀光．松辽盆地地热场特征与油气勘探的关系[J]．石油勘探与开发，1982(3):29-34.LIU Yao-guang.Relationship between geothermal field characteristics and oil and gas exploration in Songliao Basin[J].Petroleum Exploration and Development,1982(3):29-34．
[15]杨光，赵占银，王建强．松辽盆地长岭断陷烃类气藏主控因素及分布[J]．世界地质，2010,29(4):622-627.YANG Guang,ZHAO Zhan-yin,WANG Jian-qiang.Main controlling factors and distribution of hydrocarbon gas reservoirs in Changling fault depression of Songliao Basin[J].Global Geology,2010,29(4):622-627．
[16]万双双．松辽盆地北部构造演化研究:硕士学位论文[D]．成都:成都理工大学，2012.WAN Shuang-shuang.Study on tectonic evolution in northern Songliao basin:master's degree thesis[D].Chengdu:Chengdu Univerisity of Technology,2012．
[17]张元高．松辽盆地北部古中央隆起带深层构造研究及基底岩性预测:硕士学位论文[D]．大庆:大庆石油学院，2006.ZHANG Yuan-gao.Study on deep structure and prediction of basement lithology in the paleo-central uplift belt in northern Songliao Basin:master's degree thesis[D].Daqing:Daqing Petroleum Institute,2006．
[18]刘哲，单玄龙，衣健．松辽盆地长岭断陷火山岩储层对天然气成藏的控制作用[J]．世界地质，2017,36(3):880-888.LIU Zhe,SHAN Xuan-long,YI Jian.The controlling effect of volcanic rock reservoir on gas accumulation in Changling fault depression of Songliao Basin[J].Global Geology,2017,36(3):880-888．
[19]姜丽娜，夏丹，朱政源．致密砂岩储层与常规砂岩储层成藏动力学特征的差异性:以松辽盆地北部三肇地区扶余油层砂岩储层为例[J]．世界地质，2018,37(1):199-206.JIANG Li-na,XIA Dan,ZHU Zheng-yuan.Differences in reservoir formation dynamics between tight sandstone reservoirs and conventional sandstone reservoirs:a case study of Fuyu oil layer sandstone reservoirs in Sanzhao area of northern Songliao Basin[J].Global Geology,2018,37(1):199-206．
[20]HE Chuan-song,DONG Shu-wen,CHEN Xuan-hua,et al.Seismic evidence for plume-induced rifting in the Songliao Basin of Northeast China[J].Tectonophysics,2014,627:171-181．
[21]肖龙，王方正，王华，等．地幔柱构造对松辽盆地及渤海湾盆地形成的制约[J]．地球科学，2004,29(3):283-292.XIAO Long,WANG Fang-zheng,WANG Hua,et al.Mantle plume structure restricts the formation of Songliao Basin and Bohai bay basin[J].Earth Science,2004,29(3):283-292．
[22]张尔华，姜传金，张元高，等．徐家围子断陷深层结构形成与演化的探讨[J]．岩石学报，2010,26(1):149-157.ZHANG Er-hua,JIANG Chuan-jin,ZHANG Yuan-gao,et al.Discussion on the formation and evolution of the deep structure of Xujiaweizi fault depression[J].Acta Petrologica Sinica,2010,26(1):149-157．
[23]吴真玮，曾昭发，李静，等．基于重磁场特征的松辽盆地基底岩性研究[J]．地质与勘探，2015,51(5):939-945.WU Zhen-wei,ZENG Zhao-fa,LI Jing,et al.Distribution of basement lithology in the Songliao Basin derived from gravity and magnetic anomalies[J].Geology and Exploration,2015,51(5):939-945．
[24]赵雪宇，曾昭发，吴真玮，等．利用地球物理方法圈定松辽盆地干热岩靶区[J]．地球物理学进展，2015,30(6):2863-2869.ZHAO Xue-yu,ZENG Zhao-fa,WU Zhen-wei,et al.The dry hot rock target area in Songliao Basin is delineated by geophysical method[J].Progress in Geophysics2015,30(6):2863-2869.