CMP域内海洋CSEM法探测海底天然气水合物分辨能力研究
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摘要
海洋CSEM法因其对海底高阻体反应灵敏,可用于探测和识别海底天然气水合物储层,然而,由于海底天然气水合物成因和成藏规律复杂,一些区域横向块状分布或是垂向多层分布的成藏模式加大了探测难度和成本,对于探测分辨能力也提出了更高的要求。为了在实际CSEM探测中进行高阻异常的现场快速评估,借鉴地震勘探共中心点道集的转换方式,将二维模型的海洋CSEM响应在CMP域单元内转换为一维模型的响应,进而实现二维模型CSEM资料在CMP域内的近似一维反演,针对不同电阻率模型讨论勘探参数对异常体分辨能力的影响。结果表明,海洋CSEM资料的CMP域反演对横向和纵向上相邻的水合物储集体具有一定的分辨能力,这为海洋CSEM法探测复杂成藏模式的水合物提供理论依据。
The marine CSEM method is sensitive to seafloor high-resistance bodies and can be used to detect and identify seabed gas hydrate reservoirs.Due to the complexity of the distribution,laterally distributed or vertically distributed in some areas,it is difficult and costly to exploration of submarine natural gas hydrates,and higher resolution capabilities are important.By referring to the conversion method of common middle point gathers in seismic exploration,the CSEM response of 2 D model is converted to one-dimensional model response in CMP domain.One-dimensional inversion of the CSEM data of the 2 D model in the CMP domain is achieved.The influence of exploration parameters on the resolving power of anomalous bodies is discussed for different resistivity models.Study the resolving power of CMP inversion by calculating different resistivity models.The results show that CMP domain inversion has certain resolving power for the adjacent hydrate reservoirs in the horizontal and vertical directions.This provides a theoretical basis for the marine CSEM method to explore the complex hydrate reservoir.
The marine CSEM method is sensitive to seafloor high-resistance bodies and can be used to detect and identify seabed gas hydrate reservoirs.Due to the complexity of the distribution,laterally distributed or vertically distributed in some areas,it is difficult and costly to exploration of submarine natural gas hydrates,and higher resolution capabilities are important.By referring to the conversion method of common middle point gathers in seismic exploration,the CSEM response of 2 D model is converted to one-dimensional model response in CMP domain.One-dimensional inversion of the CSEM data of the 2 D model in the CMP domain is achieved.The influence of exploration parameters on the resolving power of anomalous bodies is discussed for different resistivity models.Study the resolving power of CMP inversion by calculating different resistivity models.The results show that CMP domain inversion has certain resolving power for the adjacent hydrate reservoirs in the horizontal and vertical directions.This provides a theoretical basis for the marine CSEM method to explore the complex hydrate reservoir.
引文
[1]苏正,曹运诚,杨睿,等.南海北部神狐海域天然气水合物成藏模式研究[J].地球物理学报,2014,57(5):1664-1674.Su Z,Cao Y C,Yang R,et al.Research on the formation model of gas hydrate deposits in the Shenhu Area,northern South China Sea[J].Geohpys,2014,57(5):1664-1674.
[2]吴时国,王吉亮.南海神狐海域天然气水合物试采成功后的思考[J].科学通报,2018,63(1):2-8.Shiguo Wu,Jiliang Wang.On the China’s successful gas production test from marine gas hydrate reservoirs[J].Science China Press,2018,63(1):2-8.
[3]张光学,梁金强,陆敬安,等.南海东北部陆坡天然气水合物藏特征[J].天然气工业,2014,34(11):1-10.Zhang Guangxue,Liang Jinqinang,Lu Jingan,et al.Characteristics of natural gas hydrate reservoirs on the northeastern slope of the South China Sea[J].Natural Gas Industry,2014,34(11):1-10.
[4]杨胜雄,梁金强,陆敬安,等.南海北部神狐海域天然气水合物成藏特征及主控因素新认识[J].地学前缘,2017,24(4):1-14.Yang Shengxiong,Liang Jinqiang,Lu Jing’an,et al.New understanding on the characteristics and controlling factors of gas hydrate reservoirs in the Shenhu Area on the northern slope of the South China Sea[J].Earth Science Frontiers,2017,24(4):1-14.
[5]龚建明,胡学平,王文娟,等.南海神狐海域X区块天然气水合物的控制因素[J].现代地质,2009,23(6):1131-1137.Gong Jianming,Hu Xueping,Wang Wenjuan,et al.Controlling factors of gas hydrate occurrence in the X block of Shenhu Area,South China Sea[J].Geoscience,2009,23(6):1131-1137.
[6]罗祎.海洋天然气水合物双层(或多层)BSR结构成因探讨[J].地质评论,2013,59(4):636-637.Luo Yi.Discussion on BSR structural genesis of marine natural gas hydrate double layer[J].Geological Review,2013,59(4):636-637.
[7]Vanessa Brown,Mike Hoversten,Kerry Key,et al.Resolution of reservoir scale electrical anisotropy from marine CSEM data[J].Geophysics,2012,77(2):147-158.
[8]刘长胜,周逢道,林君.海洋可控源电磁法对油气探测能力的仿真分析[J].电波科学学报,2012,27(4):747-753.LIU Changsheng,Zhou Fengdao,LIN Jun.Simulation and analysis on the prospecting capability of marine controlled-source electromagnetic methods to hydrocarbon resenvoirs[J].Chinese Journal of Radio Science,2012,27(4):747-753.
[9]裴建新,王启,袁翔.海洋CSEM法对二维水平板状水合物储集体的横向分辨能力研究[J].海洋地质前沿,2015,31(6):44-49.Pei Jianxin,Wang Qi,Yuan Xiang.Lateral resolution for 2Dhorizontal plate-like hydrate reservoir detection using marine CSEMmethod[J].Marine Geology Frontiers,2015,31(6):44-49.
[10]Rune Mittet,Ketil Brauti,Herry Maulana,et al.CMP inversion and post-inversion modelling for marine CSEM data[J].First Break,2008,26:59-67.
[11]Crepaldi J L S,Buonora M P P,Figueiredo I.Fast marine CSEMinversion in the CMP domain using analytical derivatives[J].Geophysics,2011,76(5):303-313.
[12]罗鸣,裴建新,王涛.海洋CSEM的共中心点域快速反演[J].地球物理学报,2017,60(2):738-747.Luo Ming,Pei Jianxin,Wang Tao.Fast marene CSEM inversion in the CMP domain[J].Chinese Journal of Geophysics,2017,60(2):738-747.
[13]刘颖.海洋可控源电磁法二维有限元正演及反演[D].青岛:中国海洋大学,2014.Liu Ying.2DFinite Element Modeling and Inversion for Marine Controlled-Source Electromagnetic Fields[D].Qingdao:Ocean University of China,2014.
[14]裴建新,王启,张秀丽.海洋CSEM探测海底天然气水合物的有效异常研究[J].石油地球物理勘探,2015,50(1):177-183.Pei Jianxin,Wang Qi,Zhang Xiuli.Effective anomaly for gas hydrate detection with marine CSEM method[J].Oil Geophysical Prospecting,2015,50(1):177-183.
[2]吴时国,王吉亮.南海神狐海域天然气水合物试采成功后的思考[J].科学通报,2018,63(1):2-8.Shiguo Wu,Jiliang Wang.On the China’s successful gas production test from marine gas hydrate reservoirs[J].Science China Press,2018,63(1):2-8.
[3]张光学,梁金强,陆敬安,等.南海东北部陆坡天然气水合物藏特征[J].天然气工业,2014,34(11):1-10.Zhang Guangxue,Liang Jinqinang,Lu Jingan,et al.Characteristics of natural gas hydrate reservoirs on the northeastern slope of the South China Sea[J].Natural Gas Industry,2014,34(11):1-10.
[4]杨胜雄,梁金强,陆敬安,等.南海北部神狐海域天然气水合物成藏特征及主控因素新认识[J].地学前缘,2017,24(4):1-14.Yang Shengxiong,Liang Jinqiang,Lu Jing’an,et al.New understanding on the characteristics and controlling factors of gas hydrate reservoirs in the Shenhu Area on the northern slope of the South China Sea[J].Earth Science Frontiers,2017,24(4):1-14.
[5]龚建明,胡学平,王文娟,等.南海神狐海域X区块天然气水合物的控制因素[J].现代地质,2009,23(6):1131-1137.Gong Jianming,Hu Xueping,Wang Wenjuan,et al.Controlling factors of gas hydrate occurrence in the X block of Shenhu Area,South China Sea[J].Geoscience,2009,23(6):1131-1137.
[6]罗祎.海洋天然气水合物双层(或多层)BSR结构成因探讨[J].地质评论,2013,59(4):636-637.Luo Yi.Discussion on BSR structural genesis of marine natural gas hydrate double layer[J].Geological Review,2013,59(4):636-637.
[7]Vanessa Brown,Mike Hoversten,Kerry Key,et al.Resolution of reservoir scale electrical anisotropy from marine CSEM data[J].Geophysics,2012,77(2):147-158.
[8]刘长胜,周逢道,林君.海洋可控源电磁法对油气探测能力的仿真分析[J].电波科学学报,2012,27(4):747-753.LIU Changsheng,Zhou Fengdao,LIN Jun.Simulation and analysis on the prospecting capability of marine controlled-source electromagnetic methods to hydrocarbon resenvoirs[J].Chinese Journal of Radio Science,2012,27(4):747-753.
[9]裴建新,王启,袁翔.海洋CSEM法对二维水平板状水合物储集体的横向分辨能力研究[J].海洋地质前沿,2015,31(6):44-49.Pei Jianxin,Wang Qi,Yuan Xiang.Lateral resolution for 2Dhorizontal plate-like hydrate reservoir detection using marine CSEMmethod[J].Marine Geology Frontiers,2015,31(6):44-49.
[10]Rune Mittet,Ketil Brauti,Herry Maulana,et al.CMP inversion and post-inversion modelling for marine CSEM data[J].First Break,2008,26:59-67.
[11]Crepaldi J L S,Buonora M P P,Figueiredo I.Fast marine CSEMinversion in the CMP domain using analytical derivatives[J].Geophysics,2011,76(5):303-313.
[12]罗鸣,裴建新,王涛.海洋CSEM的共中心点域快速反演[J].地球物理学报,2017,60(2):738-747.Luo Ming,Pei Jianxin,Wang Tao.Fast marene CSEM inversion in the CMP domain[J].Chinese Journal of Geophysics,2017,60(2):738-747.
[13]刘颖.海洋可控源电磁法二维有限元正演及反演[D].青岛:中国海洋大学,2014.Liu Ying.2DFinite Element Modeling and Inversion for Marine Controlled-Source Electromagnetic Fields[D].Qingdao:Ocean University of China,2014.
[14]裴建新,王启,张秀丽.海洋CSEM探测海底天然气水合物的有效异常研究[J].石油地球物理勘探,2015,50(1):177-183.Pei Jianxin,Wang Qi,Zhang Xiuli.Effective anomaly for gas hydrate detection with marine CSEM method[J].Oil Geophysical Prospecting,2015,50(1):177-183.
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