岩性油气藏 ›› 2016, Vol. 28 ›› Issue (3): 105–112.doi: 10.3969/j.issn.1673-8926.2016.03.014

• 技术方法 • 上一篇    下一篇

地震资料处理方法的叠前保幅性研究

  王 靖1,孙赞东2,吴 杰1,苏 勤1,臧胜涛1

  

  1.  1. 中国石油勘探开发研究院 西北分院,兰州 730020 ;2. 中国石油大学(北京) 地质与地球物理综合研究中心,北京 102249
  • 出版日期:2016-05-20 发布日期:2016-05-20
  • 作者简介:王靖( 1989- ),男,硕士,工程师,主要从事地震资料保真处理、叠前弹性反演方面的研究工作。 地址:( 730020 )甘肃省兰州市城关区雁儿湾路 535 号。 E-mail : wangj_xds@petrochina.com.cn 。
  • 基金资助:

    国家重大科技专项“下古生界—前寒武系碳酸盐岩储层与流体地震描述技术”(编号: 2016ZX05003-003 )资助

Pre-stack amplitude-preserved ability about several seismic data processing methods

  Wang Jing1, Sun Zandong2, Wu Jie1, Su Qin1, Zang Shengtao1   

  1. 1. PetroChina Research Institute of Exploration and Development-Northwest , Lanzhou 730020 , China ; 2. Research Center of Geology and Geophysics , China University of Petroleum , Beijing 102249 , China
  • Online:2016-05-20 Published:2016-05-20

摘要:

地震资料的保幅性是叠前反演和储层预测的重要前提。 为了研究叠前处理方法的保幅性,以球面扩散补偿、偏移距规则化处理及偏移后的道集切除等处理环节为例,从不同方面深入研究了它们对保幅性的影响。 首先从理论上分析了这些处理环节的保幅性,再以实际资料为例,对比了处理前、后的地震剖面和道集变化,并进一步重点研究了目标层位 AVO 振幅曲线变化及其对弹性参数计算结果造成的影响。结果表明,研究处理方法的保幅性十分必要,球面扩散补偿、偏移距规则化处理以及偏移后的道集切除方式对地震资料的保幅性及叠前 AVO 反演均具有重要的影响。

关键词: 低渗透气藏, 气水两相, 压裂水平井, 应力敏感, 滑脱效应, 广义拟压力, 势的叠加

Abstract:

The amplitude-preserved processing has a great significance on reservoir and liquid prediction. In order to study the amplitude-preserved ability of pre-stack processing method, some processing methods including geometry compensation, offset regularization and gather muting, were taken for example and studied in details in many aspects.Firstly the degree of amplitude preservation of these details in theory was analyzed. Then taking the seismic data processing of practical survey for example, the seismic profiles and gathers before and after processing were compared,and the change of AVO amplitude curves in target horizon was analyzed and the effects of these details on the elastic parameters calculation were evaluated. The result shows that to study the amplitude-preserved ability of pre-stack processing method is necessary, and geometry compensation, offset regularization and gather muting all have significance on the amplitude-preserved ability of seismic data and pre-stack AVO inversion.

Key words: low permeability, gas-water two-phase, fractured horizontal wells, stress sensitivity, slippage effect

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