西南石油大学学报(自然科学版)

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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

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