Xinjiang Petroleum Geology ›› 2004, Vol. 25 ›› Issue (3): 286-287.

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Prediction of Lower Cretaceous Reservoir of Qingxi Sag in Jiuquan Basin

SUN Cheng-tian, WANG Rong, ZHOU Zai-hua, LI Tao   

  1. Research Institute of Exploration and Development, Yumen Oilfield Company, PetroChina, Yumen, Gansu 735200, China
  • Received:2004-01-15 Published:2020-09-18

Abstract: In Qingxi sag of Jiuquan basin developed mud-dolomites (argillaceous dolomite, dolomitic shale, dolomite), mudstone andglutenite,ete. Analysis of such an assemblage of lithology shows that velocity differences among mud-dolomites and between mud-dolomites and mudstone are small, with similar responses of well logging and few contrasts of seismic reflection events. According tothese features, relying on available technologies, the method for reservoir prediction that can be used to deal with practical issues ispresented, by which seismic inversion, geologic statistical analysis and lithology prediction are made in Qingxi sag with 3-D data of highresolution and signal/noise ratio, And good effects are obtained from them.

Key words: Jiuquan basin, reservpir, predictjon, seism, inversion

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