山区三维静校正方法研究
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摘要
依托国家重大产业技术开发专项"西部煤炭资源高精度三维地震勘探技术,"对"山西国阳新能股份有限公司二矿390水平九采区高精度三维地震勘探"及山西阳泉五矿首采区老资料研究二个项目进行资料处理,以攻克影响勘探精度和分辨率的静校正问题。通过对二区块地震资料分别采用绿山折射静校正、综合折射静校正、层析静校正,发现综合折射静校正相对于绿山折射静校正,可以较好的解决静校正的短波长分量、长波长分量问题,更加准确的刻化出地质构造情况,而层析静校正能够更好地解决近地表横向速度变化大、地表没有同一稳定折射层、地表存在高速体等复杂地形的静校正问题,保证同相叠加和正确成像,提高资料的分辨率及勘探精度。
Rely on the state major industrial technological development special project "Western China Coal Resource High Precision 3D Seismic Prospecting Technology",combined with National Development and Reform Commission mandatory "Shanxi Guoyang New Energy Co.Ltd No.2 Coalmine 390m Level No.9 Winning District High Precision 3D Seismic Prospecting" and "Research on Shanxi Yangquan No.5 Coalmine Existing Data" carried out data processing to solve static correction problems impact prospecting precision and resolution.Through the use of the Green Hill refraction statics,comprehensive refraction statics and tomographic statics to seismic data of two blocks respectively,have found the comprehensive refraction statics can solve short wavelength constituent and long wavelength constituent problems better than Green Hill refraction statics and interpret geological structures more accurate.While the tomographic refraction statics can solve complex relief area static correction problems better in cases of near-surface variable lateral velocity,no identical stable refraction layer on surface,high velocity existed on ground surface to ensure inphase stacking and correct imaging,improving data resolution and prospecting precision.
Rely on the state major industrial technological development special project "Western China Coal Resource High Precision 3D Seismic Prospecting Technology",combined with National Development and Reform Commission mandatory "Shanxi Guoyang New Energy Co.Ltd No.2 Coalmine 390m Level No.9 Winning District High Precision 3D Seismic Prospecting" and "Research on Shanxi Yangquan No.5 Coalmine Existing Data" carried out data processing to solve static correction problems impact prospecting precision and resolution.Through the use of the Green Hill refraction statics,comprehensive refraction statics and tomographic statics to seismic data of two blocks respectively,have found the comprehensive refraction statics can solve short wavelength constituent and long wavelength constituent problems better than Green Hill refraction statics and interpret geological structures more accurate.While the tomographic refraction statics can solve complex relief area static correction problems better in cases of near-surface variable lateral velocity,no identical stable refraction layer on surface,high velocity existed on ground surface to ensure inphase stacking and correct imaging,improving data resolution and prospecting precision.
引文
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[2]李鸣祉.地震勘探资料数字处理[M].北京:中国矿业大学出版社,1989.
[3]渥.伊尔马滋.地震数据处理[M].北京:石油工业出版社,1994.
[4]保黄生,陈光明,刘威,等.山区三维地震勘探大时差静校正及时深转换[J].中国煤田地质,2004,16(2).
[5]刘红星,李学文.折射静校正技术在宣东地震资料处理中的应用[J].中国煤田地质,2004,16(2).
[6]张宁茹,徐秀力.综合静校正技术在山区地震资料处理中的应用[J].中国煤田地质,2005,17(6).
[7]郑朝平,徐颖.地震资料处理技术新进展—静校正和叠加成像[J].勘探地球物理进展,2003,(5).
[8]杨为民,张云岗,刘原英.层析静校正技术在山地复杂地区三维地震勘探中的应用[J].中国煤田地质,2007,19(2).
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