塔里木盆地深反射地震资料处理
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摘要
通过对塔里木盆地巴楚至塔中的12 s深反射地震资料的分析、处理表明,在南北方向上,由和3井经和田1井至和4井基底由北向南逐步抬升,和4井向南基底变深;东西向,巴楚隆起基底较浅,到塔中变深;通过处理可以发现,除了通常可以看到的T4-T9各层反射结构外,在基底以下的深层,还能看到有效的反射;经初步解释和地质分析认为,所处理剖面同相轴连续性好,信噪比较高,归位准确,深层反射信息可靠,剖面所反映的构造形态清楚,规模较大,基本落实了所部署测线工区的地下构造,而且还揭示了一些以前尚未认识到的构造或构造显示,丰富了该区构造特征和构造演化的认识。
The analysis and processing of 12-second deep reflection seismic data obtained from Bachu to Tazhong in Tarim basin show that,in NS direction,the basement is gradually uplifted from He-3 well through Hetian-1 well to He-4 well,with the basement becoming deeper from He-4 well southwards;in EW direction,the basement of Bachu uplift is relatively shallow,and becomes deeper at Tazhong.Through processing,the authors have found that,besides commonly seen reflection structures of T4-T9 layers,effective reflection can also be seen in the deep layers beneath the basement.Based on preliminary interpretation and geological analysis,the authors hold that the processed profile has good continuity of phase axis,high signal-to-noise ratio and homing accuracy and reliable deep reflection information.The tectonic framework reflected by the profile is clear and of fairly large scale.The authors' work has confirmed the underground structure along the deployed survey line of the work area,and also revealed structures or structural manifestations which had not been detected by previous researchers,thus enriching the understanding of the structural characteristics and structural evolution in this region.
The analysis and processing of 12-second deep reflection seismic data obtained from Bachu to Tazhong in Tarim basin show that,in NS direction,the basement is gradually uplifted from He-3 well through Hetian-1 well to He-4 well,with the basement becoming deeper from He-4 well southwards;in EW direction,the basement of Bachu uplift is relatively shallow,and becomes deeper at Tazhong.Through processing,the authors have found that,besides commonly seen reflection structures of T4-T9 layers,effective reflection can also be seen in the deep layers beneath the basement.Based on preliminary interpretation and geological analysis,the authors hold that the processed profile has good continuity of phase axis,high signal-to-noise ratio and homing accuracy and reliable deep reflection information.The tectonic framework reflected by the profile is clear and of fairly large scale.The authors' work has confirmed the underground structure along the deployed survey line of the work area,and also revealed structures or structural manifestations which had not been detected by previous researchers,thus enriching the understanding of the structural characteristics and structural evolution in this region.
引文
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[14]Zhang Z J,Zhang X,Badal J.Composition of the crust beneathsoutheastern China derived from an integrated geophysical data set[J].Journal of Geophysical Research-Solid Earth,2008,113(B4),B04417,DOI:10.1029/2006JB004503.
[15]吴其斌.国外深地震反射研究之现状[J].地质科技情报,1993,12(1):85-91.Wu Qibin.The state of the art of deep seismic reflection[J].Geological Science and Technology Information,1993,12(1):85-91(in Chinese with English abstract).
[2]杜耀斌,曾庆才.塔里木盆地河南探区地震资料处理方法研究[J].新疆石油地质,2006,27(1):53-55.Du Yaobin,Zeng Qincai,Study of the methods for seismic dataprocessing in Henan prospecting area in Tarim Basin[J].XinjiangPetroleum Geology,2006,27(1):53-55(in Chinese with Englishabstract).
[3]陈启元,王彦春,段云卿,等.复杂山区的静校正方法探讨[J].石油物探,2001,4(01):73-81.Chen Qiyuan,Wang Yanchun,Duan Yunqin,et al.A study on themethods of static correction in complicated mountain area[J].Geophysical Prospecting For Petroleum,2001,4(01):73-81(inChinese with English abstract).
[4]王彦春,余钦范,段云卿,等.折射波静校正法在复杂地表地区的应用[J].物探与化探,1999,23(6):428-434.Wang Yanchun,Yu Qinfan,Duan Yunqing.et al.The applicationof refraction static correction in complex areas[J].Geophysical andGeochemical Exploration,1999,23(6):428-434(in Chinese withEnglish abstract).
[5]谢里夫R E,吉尔达特L P.勘探地震学[M].北京:石油工业出版社,1999.Robert E.Sheriff,Geldart L L P,Exploration Seismology[M].Beijing:Petroleum Industry Press,1999.
[6]李庆忠.走向精确的勘探道路[M].北京:石油工业出版社,1996.Li Qingzhong.Precise Exploration of the Road Towards[M].Beijing:Petroleum Industry Press,1996(in Chinese).
[7]陆基孟.地震勘探原理[M].东营:石油大学出版社,1993.Lu Jimeng.Principles of Seismic Exploration[M].Dong Ying:Petroleum University Press,1993(in Chinese).
[8]杨文采,于常青.微尺度反射地震波场与油气藏识别[J].石油天然气学报,2009,31(6):1-10.Yang Wencai,Yu Changqing.The macro-size reflected seismicwave-field and recognition of hydrocarbon reservoirs[J].Journal ofOil and Gas Technology,2009,31(6):1-10(in Chinese withEnglish abstract).
[9]胡中平,孙建国.高精度地震勘探问题思考及对策分析[J].石油地球物理勘探,2002,3(75):530-536.Hu Zhongping,Sun Jianguo.Discussion on problem of high-precision seismic exploration and its countermeasure analysis[J].OilGeophysical Prospecting,2002,37(5):530-536(in Chinese withEnglish abstract).
[10]阎世信,刘怀山,姚雪根.山地地球物理勘探技术[M].北京:石油工业出版社,2000.Yan Shixin,Liu Huaishan,Yao Xuegen.Mountain GeophysicalExploration Technology[M].Beijing:Petroleum Industry Press,2000(in Chinese).
[11]Zhang Z J,Lin Y H,Liu E R.Large static correction using a hybridoptimization method in complex terrains:Some experience learntfrom China[J].Journal of Seismic Exploration,2005,13(4):337-352.
[12]Zhang Z J,Wang G J,Teng J W,et al.CDP mapping to obtainthe fine structure of the crust and upper mantle from seismicsounding data:an example for the southeastern China[J].Physics ofthe Earth and Planetary Interiors,2000,122(1/2):133-146.
[13]高锐,黄东定,卢德源,等.横过西昆仑造山带与塔里木盆地结合带的深地震反射剖面[J].科学通报,2000,45(17):1874-1879.Gao Rui,Huang Dongding,Lu Deyuan,et al.The deep seismicreflection profile across associated area of the western Kunlunorogenic belt and the Tarim Basin[M].Chinese Science Bulletin,2000,45(17):1874-1879(in Chinese).
[14]Zhang Z J,Zhang X,Badal J.Composition of the crust beneathsoutheastern China derived from an integrated geophysical data set[J].Journal of Geophysical Research-Solid Earth,2008,113(B4),B04417,DOI:10.1029/2006JB004503.
[15]吴其斌.国外深地震反射研究之现状[J].地质科技情报,1993,12(1):85-91.Wu Qibin.The state of the art of deep seismic reflection[J].Geological Science and Technology Information,1993,12(1):85-91(in Chinese with English abstract).
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