西南石油大学学报(自然科学版)

• 博导论评 • 上一篇    

非一致性采集时移地震油藏监测可行性研究

尹成1,葛子建1,芮拥军2,赵胜天2,崔庆辉2   

  1. 1. 西南石油大学地球科学与技术学院,四川成都610500
    2. 中国石化胜利油田分公司物探研究院,山东东营257022
  • 出版日期:2014-02-01 发布日期:2014-02-01
  • 基金资助:

    国家高技术研究发展计划(863 计划)(2011AA060303)。

Feasibility Study on Non-repeating Acquired Time-lapse
Seismic Reservoir Monitoring

Yin Cheng1, Ge Zijian1, Rui Yongjun2, Zhao Shengtian2, Cui Qinghui2   

  1. 1. School of Geoscience and Technology,Southwest Petroleum University,Chengdu,Sichuan 610500,China;
    2. Geophysical Research Institute,Shengli Oilfield Branch Company,SINOPEC,Dongying,Shandong 257022,China
  • Online:2014-02-01 Published:2014-02-01

摘要:

为研究非一致性采集时移地震油藏监测的可行性,利用三维高斯射线束正演模拟方法对储层段做照明度模拟
分析,量化了不同观测系统参数对储层面元接收能量的影响,得到了影响储层成像照明能量大小和均匀度的最主要因
素是炮检距和方位角的分布,即观测系统参数中的最大炮检距和接收线距的大小。当储层速度变化小于观测系统参
数变化给面元接收能量大小带来的影响时,更有必要对时移前后数据体的观测系统进行一致性的匹配处理,这一步处
理的重点应该是面元重置和面元内炮检距与方位角分布的匹配。S56 区块一套非一致性采集的实际资料匹配处理试
验表明:本文方法能有效地减小非储层段的地震响应差异,放大储层段的地震响应差异。

关键词: 非一致性采集, 时移地震, 油藏监测, 观测系统, 地震照明

Abstract:

To study the feasibility of non-repeating acquired time-lapse seismic reservoir monitoring,this paper uses 3-D
Gaussian ray-beam forward simulation to simulate and analyze illumination of reservoir,quantifies the impact of different
geometry parameters on bin-received energy of reservoir,and finds that the main factors affecting the magnitude and uniformity
of bin-received energy of reservoir are distribution of offset and azimuth,namely the magnitude of max-offset and the number
of receiver-line. When velocity variation of reservoir has less effect than geometry parameters variation on the magnitude of
cell-received energy,it is more necessary to conduct the conforming matching for geometry of time-lapse seismic datasets. The
key point in this step should be rebinning and matching of distribution of offset and azimuth in bins. It has proved to be able to
efficiently reduce the seismic respond deviation in non-reservoir and amplify it in reservoir by geometry-matching for a set of
non-repeating acquired real data from block S56.

Key words: non-repeating acquisition, time-lapse seismic, reservoir monitoring, geometry, seismic illumination