石油与天然气地质 ›› 2012, Vol. 33 ›› Issue (1): 141-147.doi: 10.11743/ogg20120118

• 技术方法 • 上一篇    下一篇

地震采集面元尺度与成像横向分辨能力分析

郭恺1, 仝兆岐1, 滕厚华2   

  1. 1. 中国石油大学 地球资源与信息学院, 山东 青岛 266555;
    2. 中国石化 胜利油田物探研究院, 山东 东营 257022
  • 收稿日期:2011-08-31 修回日期:2012-01-10 出版日期:2012-02-28 发布日期:2012-03-22
  • 基金项目:

    国家高技术研究发展计划(863计划)项目(2009AA06Z206);国家科技重大专项(2011ZX05014-001-008HZ)。

Analysis on bin size of seismic survey and lateral resolution of imaging

Guo Kai1, Tong Zhaoqi1, Teng Houhua2   

  1. 1. School of Earth Resources and Information, China University of Petroleum, Qingdao, Shandong 266555, China;
    2. Shengli Geophysical Research Institute of SINOPEC, Dongying, Shandong 257022, China
  • Received:2011-08-31 Revised:2012-01-10 Online:2012-02-28 Published:2012-03-22

PDF (PC)

1276

被引次数

20

摘要：

在分析地震采集面元尺度一般性设计的基础上,通过地震模型不同采集道间距的正演模拟成像结果分析,验证了采用不同道距成像解释结果存在较大差异。道距越大解释难度越大,误差也越大,道距越小,成像解释结果与实际地质构造越接近。通过对实际不同面元尺度的地震成像结果分析,揭示了较大面元的断层成像存在同相串轴现象,准确判别解释难度大。小面元的断层成像面窄而清晰,易于判别与解释,不同程度地提高了地震横向分辨能力。结合以往勘探的应用情况,根据不同地震勘探阶段的地质任务需求,给出了在新区地震勘探、高精度地震勘探、滚动开发地震勘探阶段设计采集面元尺度时的建议,可供地震勘探采集面元设计时参考。

关键词: 模型正演, 变面元成像, 横向分辨率, 采集面元设计

Abstract:

Based on the analyses of general bin size design of seismic survey,the imaging of forward modeling with different trace spacing verifies that interpretation results are quite different for different tracing spacing.The larger the trace spacing is,the more difficult the interpretation is,and the greater the error is.The smaller the trace spacing is,the closer the interpretation results are to the real geologic structures.Analyses of real seismic imaging with different bin sizes reveal that event-crossing may occur on imaging section of fault when bin size is large,making it very difficult to accurately identify fault.In contrast,imaging section of fault is narrow and clear when bin size is small,making it easy to interpret fault,thus increasing lateral resolution of seismic data.In conjunction with the previous exploration application and according to the geologic task in different seismic exploration stages,we present corresponding proposals of bin sizes for seismic exploration in frontier area,high resolution seismic exploration,seismic exploration during rolling exploration and development.

Key words: forward modeling, variable bin imaging, lateral resolution, acquisition bin design

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