| 准噶尔盆地特殊地表的静校正应用 |
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| 引用本文： | 薛为平,梁英,刘治凡.准噶尔盆地特殊地表的静校正应用[J].新疆地质,2005,23(1):82-85. |
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| 作者姓名： | 薛为平 梁英 刘治凡 |
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| 作者单位： | 中国石油新疆油田公司勘探开发研究院地球物理地物所,新疆,乌鲁木齐,830011 |
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| 摘 要： | 准噶尔盆地腹部三个泉凸起东地段，地表为沙漠、深沟、陡坎和戈壁。地形高差大，表层纵、横向速度、厚度变化大，表层结构十分复杂．不同的表层速度差异变化，都将会造成十分严重的中、长波长静校正问题，影响地震资料的信噪比和剖面成像．通过对野外低速带实际资料的分析及应用，在地震微测井资料的约束下，依据表层地质特征的变化规律，采用分片综合建模静校正方法，建立了较为准确的表层结构模型，获得了良好的效果，比较好地解决了地震剖面中的中、长波长静校正问题．
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| 关 键 词： | 准噶尔盆地 应用 地表 静校正方法 地形高差 横向速度 厚度变化 速度差异 表层结构 地震资料 测井资料 变化规律 地质特征 结构模型 地震剖面 正问题 长波长 低速带 信噪比 凸起 沙漠 戈壁 |
| 文章编号： | 1000-8845(2005)01-082-04 |
| 修稿时间： | 2004年9月27日 |
APPLICATION OF STATIC CORRECTION IN COMPLEX SURFACE STRUCTURES OF JUNGGAR BASIN |
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| XUE Wei-ping,LIANG Ying,LIU Zhi-fan.APPLICATION OF STATIC CORRECTION IN COMPLEX SURFACE STRUCTURES OF JUNGGAR BASIN[J].Xinjiang Geology,2005,23(1):82-85. |
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| Authors: | XUE Wei-ping LIANG Ying LIU Zhi-fan |
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| Abstract: | The region of east Sangequan convex in the hinterland of Junggar basin is featured with different surface conditions such as desert, deep valley, steep slope and Gobi. Its elevation varies harshly, velocity and thickness of weathering changes greatly both vertically and horizontally, and surface structures are very complex. All these factors result in the bad static correction for middle and long wave, and influence the quality of Signal-noise ratio of seismic data and section imaging. Through application and analysis for field weathering data, the exact surface structure model is built by means of method of dividing patch synthesis modeling static correction, under the control of uphole shooting, according the variation rule of surface geological property. The processing effort has good effectiveness and the difficult of middle and long wave static correction can be preferably solved in seismic section. |
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| Keywords: | Quan2 Well 3D weathering refraction shooting uphole shooting dune-curve shooting first arrival static correction weathering |
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