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海底电缆地震资料采集观测系统对比

王 哲1 杨志国1 龚旭东1 张建峰2 周 滨2 高 祁2   

  1. 1 中海油能源发展股份有限公司工程技术分公司;2 中海石油(中国)有限公司天津分公司
  • 出版日期:2014-08-15 发布日期:2014-08-15
  • 作者简介:王哲(1986-),男,陕西咸阳人,2010 年毕业于中国石油大学(华东),助理工程师,现从事物探采集监督工作。地址: 天津市滨海新区(塘沽)渤海石油路688 号海洋石油大厦A 座1107 室,邮政编码:300452。E-mail:wangzhe6@cnooc.com.cn

Comparison of OBC Seismic Data Acquisition Geometries

Wang zhe1,Yang Zhiguo1,Gong Xudong1, Zhang Jianfeng2, Zhou Bin2, Gao Qi2   

  1. 1 CNOOC EnerTech-Drilling & Production Co.; 2 CNOOC (China) Tianjin Company
  • Online:2014-08-15 Published:2014-08-15

摘要: 在海洋石油地震勘探中,随着勘探技术的不断改进,以及对勘探要求的不断提高,地震勘探资料采集对 观测系统的要求也越来越高,这就需选择出最佳的采集观测系统进行地震勘探。通过研究观测系统面元属性这一途径,对目前海底电缆 地震勘探中所普遍采用的PATCH 和正交束线这两种观测系统在方位角、炮检距、覆盖次数、采集脚印及覆盖次数 渐减带等属性方面的特征进行分析对比,得出各面元属性在地震资料中产生的不同反映,及其优缺点。另外,实践表 明通过观测系统属性分析的这一方法,可以在不同地质勘探任务和地质环境条件选择观测系统时提供有效的途径和依据。

Abstract: With the exploration technological progress continually made in offshore oil seismic exploration field, the requirements on seismic data acquisition geometry have become higher and higher. It is necessary to choose the most appropriate data acquisition geometry. Based on the study of the attributions of the geometry, this paper analyzes and compares the two geometries of PATCH and Orthogonal, which are widely used in submarine cable seismic exploration, in terms of such attributions as azimuth, offset distribution, folds and acquisition footprint, and folds decreasing area. Then it summarizes the advantages and disadvantages of the two geometries in seismic data acquisition. In addition, the practice indicates that analysis of the attributions of geometry can provide the effective method and basis for selection of geometry according to the different geological exploration tasks and environmental conditions.