西南石油大学学报(自然科学版)

Previous Articles     Next Articles

Application of Litho-stratigraphic Reservoirs Prediction by
Three Seismic Methods

Tong Minbo1, Gao Lidong2, Su Zhan3, Cao Qingrong1, Xu Xiaoqiang1   

  1. 1. Research Institute of Shaanxi Yanchang Petroleum(Group)Co. Ltd.,Xi′ an,Shaanxi 710075,China
    2. Exploration and Development Institute of Changqing Oilfield Company,CNPC,Xi′ an,Shaanxi 710018,China
    3. Changqing Division,Bureau of Geophysical Prospecting INC.,CNPC,Xi′ an,Shaanxi 710021,China
  • Online:2014-12-01 Published:2014-12-01

Abstract:

In recent years,litho-stratigraphic reservoir exploration has become an important and difficult problem. The theory
of“four basin types,three reservoir types”litho-stratigraphic reservoir play,trap,accumulation model,and the reseach model
of“structure-sequence accumulation combination”have laid an important foundation for the exploration and exploitation of
continental litho-stratigraphic reservoirs. The central depression in southern Songliao Basin belongs to“multi-slope break
gentle slope-lake transgressive domain and high domain river delta combination”. The“structure-sequence”study alone is not
enough for effective litho-stratigraphic reservoir prediction. Diversified geophysical methods for litho-stratigraphic reservoir
exploration promotes the application of seismic technology in the field of litho-stratigraphic reservoir prediction,but the limited
flexibility of seismic technology is also clear. This paper takes the research in central depression of southern Songliao Basin
as an example,and explores application of vertical litho-stratigraphic combination,information of seismic trough,and multiwavelet
decomposition technology,and we extract litho-stratigraphic information from seismic waveform. Applicability of the
three seismic methods in litho-stratigraphic reservoir prediction of central depression in southern Songliao Basin is studied and
has achieved good effect with reference to drilling and sedimentary rules constraint.

Key words: Songliao Basin, litho-stratigraphic, vertical combination, seismic trough, multi-wavelet decomposition