Xinjiang Petroleum Geology ›› 2009, Vol. 30 ›› Issue (2): 255-257.

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Seismic Acquisition Techniques in Thick Loess Area in Southwest Depression, Tarim Basin

LIU Yi-mou1, LIANG Xiang-hao1, SUN Jian-hua1, ZHANG Xin-dong1, LUO Wei-dong2   

  1. 1. Department of Exploration, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China;
    2. Geophysical Prospecting Company,Sichuan-Changqing Drilling Engineering Company, Korla, Xinjiang 841000, China
  • Received:2008-09-07 Online:2009-04-01 Published:2020-08-25

Abstract: The thick loess area in southwest depression of Tarim basin is always one of the most complex regions for seismic survey. Being covered with thick loess, the shooting and receiving conditions are poor, resulting in severe absorption and attenuation of seismic waves as well as low signal-to-noise ratio. In order to find out Kexi-2 structure found by non-seismic prospecting, such 2D seismic acquisition techniques as array shooting, long geophone array receiving and wide-line acquisition ones are all applied in this area. The results show that the seismic profile acquired is of much higher quality than ever before, proving these techniques are effective and practicable.

Key words: Tarim basin, southwest depression, loess area, seismic acquisition, array shooting, wideline, long geophone array receiving

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