首页> 外文会议>CPS/SEG(Society of Exploration Geophysicists) 2004 International Geophysical Conference: Expanded Abstracts vol.1; 2004; >Imaging techniques experiment of complex high dipping structure in Nanmenchang region in East Sichuan
【24h】

Imaging techniques experiment of complex high dipping structure in Nanmenchang region in East Sichuan

机译:川东南门场地区复杂高倾角构造成像技术实验

获取原文
获取原文并翻译 | 示例

摘要

Nanmenchang structure is one of the main gas-filled structures in east Sichuan. The structure is characterized with high dipping, rough relief, limestone outcropping and complex subsurface structure, which is the seismic and geologic common condition in east Sichuan. The difficulties of seismic exploration in the region lie in clearly imaging of the structural host part. In order to solve the imaging problem, we adopt joint tackling of acquisition and processing techniques aimed at improving signal-to-noise ratio and stack imaging quality. During tackling, many methods are adopted to improve acquisition and processing quality, such as forward modeling technique is applied to flexibly design geometry; the coupling and matching between the type of explosive source, receivers and rocks stratum are thoroughly considered; diving wave tomographic inversion is used to solve static correction problem caused by complex near surface structure; prestack partial migration is applied to optimum CMP gathers selection etc. . As the result of tackling task, the imaging quality of seismic section has been greatly improved as compared with that before tackling, the imaging problem of complex high dipping structure in the study area is basically resolved.
机译:南门场构造是川东地区主要的充气构造之一。该构造具有高倾角,粗糙起伏,石灰岩露头和复杂的地下构造的特征,这是川东地区地震和地质的共同条件。该地区地震勘探的困难在于对结构主体的清晰成像。为了解决成像问题,我们采用采集和处理技术的联合定位,旨在提高信噪比和堆栈成像质量。在定位过程中,采用了许多方法来提高采集和处理质量,例如,采用正向建模技术来灵活地设计几何图形;彻底考虑了爆炸源,接收器与岩层之间的耦合与匹配。潜水波层析成像反演用于解决复杂的近地表结构引起的静校正问题。叠前部分迁移适用于最佳CMP道集选择等。定位任务的结果是,与定位之前相比,地震剖面的成像质量有了很大的提高,基本解决了研究区复杂高倾角构造的成像问题。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号