西南石油大学学报(自然科学版)

Previous Articles     Next Articles

Recognition of Single Channel in Composite Sand Body Based on
Well-seismic and Inversion

Xu Liheng, Hao Lanying, Liu Jiangyu   

  1. Exploration and Development Research Institute,Daqing Oilfield Company Limited,Daqing,Heilongjiang 163712,China
  • Online:2014-04-01 Published:2014-04-01

Abstract:

With the well pattern successively infills,the distributing tend of reservoir sandbody is gradually determined,the
distributing characteristics of sandbody in vertical direction can be accurately recognized according to the logging data,but
that in horizontal direction is difficulty to be identified. Aiming at the problems of the heavy tasks and the ambiguity on the
recognition of a single channel on well-tie sections,the technique of well-seismic and inversion to predict the boundary of a
single channel in composite sand body was proposed in the paper,and the river channel boundaries were further proved by
the logging curve characteristics. Four typical indicators of the single river channel in composite sand body are recognized
on the inversion sections,8 synchronous but not simultaneous single channels are identified clearly by sandstone poor belt
conditions of the seismic inversion plan. With the single channel recognition achievement,good effects are obtained on the
injection-production relation and remaining oil tapping,which shows a good application prospect.

Key words: well-seismic, inversion, single river channel, composite sand body, recognition