新疆石油地质 ›› 2008, Vol. 29 ›› Issue (1): 29-32.

• 油气勘探 • 上一篇    下一篇

用正演模型研究地震垂向分辨率

张亚敏1, 张书法2   

  1. 1.长安大学地球科学与国土资源学院, 西安710054;
    2.中国石化中原油田分公司勘探开发科学研究院, 河南濮阳457001
  • 收稿日期:2007-04-16 发布日期:2020-08-10
  • 作者简介:张亚敏(1958-), 男, 河南中牟人, 高级工程师, 博士, 石油地质,(Tel) 029-85403225(E-mail) zym_py@163.com
  • 基金资助:
    中国石化“十条龙”重点科技攻关项目, 中原油田复杂断块油藏提高采收率技术研究(P01034)资助

A Study on Seismic Vertical Resolution by Forward Model

ZHANG Ya-min1, ZHANG Shu-fa2   

  1. 1. School of Earth Sciences and Resources Management, Chang'an University, Xi'an, Shaanxi 710054, China;
    2. Research Institute of Exploration and Development, Zhongyuan Oilfield Company, Sinopec, Puyang, Henan 457001, China
  • Received:2007-04-16 Published:2020-08-10

摘要: 研究地震反射波垂向分辨率与地层结构及入射子波的频率关系和砂层组中砂岩百分比与地震反射波振幅、波阻抗之间的关系。制作了2 种地质模型: 一种是不同厚度的砂泥岩地层组合模型; 另一种是不同砂泥岩百分比的砂泥岩地层模型组合。研究表明, 地震反射波振幅、波阻抗与砂泥岩百分比具有线性正比关系。地震反射波垂向分辨率与入射到目的层的子波频率有关,与地层沉积韵律及结构有关。

关键词: 正演, 模型, 分辨率, 反射波, 振幅, 波阻抗

Abstract: In order to investigate the relation of vertical resolution of seismic reflection with stratum structure and frequency of incidence wavelet, and the relation between the percentage of sandstone and the amplitude and wave impedance of seismic reflection in sand layers, two geological models are developed. One is the stratum association model with different thickness of sand-mudstone; the other is the association of stratum models with different percentages of sand-mudstone. The study shows that there exist linear proportional relations between the seismic reflection amplitude and wave impedance and the sand-mudstone percentage. The vertical resolution of seismic reflection is related not only to the incidence wavelet frequency into target zone, but also to the stratum sedimentary rhythm and structure.

Key words: forward, model, resolution, reflection, amplitude, wave impedance

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