新疆石油地质

新疆石油地质 ›› 2009, Vol. 30 ›› Issue (5): 579-581+584.

• 油气勘探 • 上一篇    下一篇

基于地球物理模型正演的三维观测系统优化设计

苏丕波1, 雷怀彦1,2, 杨继友3   

  1. 1.厦门大学 海洋与环境学院 近海海洋环境国家重点实验室,福建 厦门 361005;
    2.中国科学院 地质与地球物理研究所兰州油气中心,兰州 730000;
    3.西南石油局 第二物探大队,四川 德阳 618000
  • 收稿日期:2008-10-19 修回日期:2009-01-23 出版日期:2009-10-01 发布日期:2020-09-30
  • 作者简介:苏丕波（1981-）,男,湖北潜江人,在读博士研究生,地球物理勘探, （Tel）13779991124（E-mail）spb_525@sina.com.
  • 基金资助:
    国家自然科学基金项目（40472156）和 973 项目（2009CB219501）共同资助

Optimization Design of 3-D Seismic Observation System Based on Geophysical Forward Model

SU Pi-bo1, LEI Huai-yan1,2, YANG Ji-you3   

  1. 1.State Key Laboratory of Marine Environmental Science, College of Oceanography and Envionmental Science, Xiamen University,Xiamen, Fujian 361005, China;
    2. Lanzhou Research Center of Petroleum Resources, Institute of Geology and Geophysics, CAS, Lanzhou,Gansu 730000, China;
    3.The Sexond Geophysical Service Company, Southwest Petroleum Administration Bureau, Sinopec, Deyang,Sichuan 618000, China
  • Received:2008-10-19 Revised:2009-01-23 Online:2009-10-01 Published:2020-09-30

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摘要： 针对四川盆地大邑地区复杂的地下构造,构建了该区的地球物理正演模型,利用射线追踪正演及全波场波动方程的正演模拟分析,进行了地震采集参数的论证和三维观测系统的优化选择,进而讨论了采集方法的适应性。研究结果表明,优选的观测系统,能极大地改善剖面的品质和提高地下复杂地质体成像精度。

关键词: 地震勘探, 正演模拟, 采集方法, 观测系统, 优化设计

Abstract: Dayi area in Sichuan basin is characterized by complicated subsurface structures. In the previous exploration, the seismic observation system was not effectively designed for the oil-enriched object area, leading to inconspicuous event set and fault points on the seismic profile and failing to understand structures. In order to clarify the occurrence, property and distribution of two major faults in this area, this paper presents the geophysical forward model of this area, conducts the seismic data acquisition demonstration and the optimization design/selection of the 3-D seismic observation system using ray tracing forward modeling and full wave field equation analysis and discusses the suitability of the data acquisition. The results show that the 3-D seismic observation system optimization design and selection can be able to greatly improve the quality of the seismic profile and the imaging accuracy of geologic bodies in this area.

Key words: seismic prospecting, forward model, acquisition, observation system, optimization design

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