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| 基金项目：中国石化华东油气分公司科技项目“溱潼工区中古生界地震资料处理与精细构造解释”（HDF/KJ2019-20） |
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| 摘要： |
| 溱潼断阶带地区为多期次三维地震采集的拼接区，不同期次的三维观测系统参数差异大，采集面元大小、覆盖次数、偏移距、方位角等属性不同，统一面元处理导致部分地区出现空面元；地表条件复杂，导致实际炮检点偏离设计点位，观测系统采样点不均匀，不能满足叠前偏移对地震采集信息规则分布的要求，造成地震数据偏移中出现假频、画弧等问题。从实际应用角度分析了基于匹配追踪傅里叶变换的叠前五维数据规则化技术在溱潼断阶带这一观测系统严重不规则区域的适用性，五维规则化技术较好地解决了区内因野外采集观测系统差异造成的地震属性不规则问题，提升了地震资料的信噪比及成像质量。 |
| 关键词：匹配追踪；五维规则化；信噪比；成像；溱潼断阶带 苏北盆地 |
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| Abstract: |
| The Qintong step-fault is a spliced area for multi-stage three-dimensional seismic acquisition. The parameters of different 3D observation systems differ greatly, so do the properties of surface element size, degree of covering, offset, azimuth and so on. In unified surface element processing, empty surface element appears in some areas. Due to the complex surface conditions in this area, the actual shot and receiver points deviate from the designed points, and the sampling points of the observation system are not uniform, which does not meet the requirements of pre-stack migration for regular distribution of seismic acquisition information, thus causing problems such as false frequency and arc drawing in seismic data migration. In this paper, the applicability of five-dimensional regularization technique based on Matching Pusuit Fourier Interpolation in the seriously irregularied region of Qintong step-fault observation system is analyzed from the perspective of practical application. The five-dimensional regularization technology solves the problem of irregular seismic attributes caused by the difference of field acquisition and observation systems in Qintong step-fault zone, and improves the signal-to-noise ratio and imaging quality of seismic data |
| Keywords:match tracing five-dimensional regularization signal to noise ratio imaging Qintong step-fault area Northern Jiangsu Basin |
| 刘田田.五维规则化技术在溱潼断阶带地震资料处理中的应用[J].地质学刊,2021,45(2):168-176 |
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