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层析建模技术在库车坳陷东秋山地区静校正应用探索

Application of chromatography modeling techniques in the Kuqa depression statics exploration area east Akiyama

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【作者】 秦自耕李子轩庹先国李怀良杜小龙QINZi-gengLIZi-xuanTUOXian-guoLIHuai-liangDUXiao-long

【Author】 QIN Zi-geng;Li Zi-xuan;TUO Xian-guo;Li Huai-liang;DU Xiao-long;Key Laboratory of Earth Exploration and In formation Technology,Ministry of Education,Chengdu University of Technology;Geophysical Prospecting Company of Chuanqing Drilling Engineering Co,Ltd.,CNPC;PetroChina Southwest Oil and Gas Field Branch Sichuan Gas Field;Southwest University of Science and Technology;

【机构】 成都理工大学地球探测与信息技术教育部重点实验室中国石油川庆钻探工程公司地球物理勘探公司中石油西南油气田川中气矿西南科技大学

【摘要】 地震走时层析建模技术是解决复杂近地表模型速度建模问题的重要技术.该方法是一种迭代反演方法,在地震反演过程中需反复计算地震射线走时.本文采用交互初至拾取方法,通过层析反演出近地表模型,对比分析了走时层析反演表层模型与野外表层模型差别,从而引入了控制点成果约束的层析反演综合建模技术.最终将野外调查成果同走时层析反演建模结合起来,运用非线性走时层析反演技术,通过可视图片、数据、曲线的比较,得出如下结论:在速度纵横向变化大的复杂地区,通过野外资料与室内处理信息交互约束,可以为建立符合实际情况的近地表模型奠定基础,进一步为地震采集资料静校正处理方法的确定和叠加剖面品质提高创造了条件.

【Abstract】 Seismic travel-time tomography method is an important technique which is used to reconstruct complex nearsurface velocity models.This is an iterative inversion method,whose process requires repeated calculations of seismic ray travel-time.In this paper,we adopt the interactive beginning method to pick up,show the near-surface model by omega system,compare and analysis the travel-time tomography inversion of surface layer model and field surface model difference.Thus we introduce the achievements of control point constraints of tomographic inversion modeling technology.In the back of the article,we put the field investigation results combined with travel time tomography inversion modeling and use non-linear travel-time tomography inversion technique.Our experiments have compared the visual image,data,curves,the following conclusion;in complex areas of variation in the speed vertical and horizontal,this method that the field data and indoor processing information interaction constraints can lay the foundation for near-surface model in line with the actual situation,this method can also be static correction of seismic acquisition data processing method of determination and the quality of stack section increase created the conditions.

  • 【文献出处】 地球物理学进展 ,Progress in Geophysics , 编辑部邮箱 ,2015年02期
  • 【分类号】P631.4
  • 【被引频次】2
  • 【下载频次】51
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