西南石油大学学报(自然科学版)

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Analysis of the Prediction Effectiveness About Baiyinchagan
Depression Gentle Slope Belt Reservoir

Wang Hui1, Zhang Yamin2, Zhang Wenbo2, Dong Ligang2, Chen Faliang3   

  1. 1. The Editorial Board of Journal of Xi’an Shiyou University,Xi’an,Shaanxi 710065,China
    2. School of Earth Sciences and Resources Management,Chang’an University,Xi’an,Shaanxi 710054,China
    3. Geophysics Research Institute of Zhongyuan Oilfield Company,SINOPEC,Puyang,Henan 457001,China
  • Online:2013-12-01 Published:2013-12-01

Abstract:

In view of the distribution problem of sand body in Baiyinchagan Depression gentle slope belt about Tengger group
thin interbed oil sands level,we carry out the research with the methods of geological and geophysical relations,seismic multiattribute
analysis and wave impedance inversion. It is the results indicate in this paper that(1)The sandstone impedance
characteristics of the thin interbed level is not clear and the single reservoir prediction method could not conduct reservoir
prediction effectively.(2)The sand body has good reflection in seismic multi-attribute analysis.(3)Seismic muliti-attribute
prediction can finely describe the lateral changes of the thickness of sand shale and the prediction effectiveness is consistent
with the real drilling data. Recently,based on the depression belt prediction target,we successfully drilled the tin Well X27,
and found out the rich block and controlled the geological reserves in ten million tons. The realization of efficient exploration
provides a good direction for the exploration and development of the oilfield.

Key words: effective hydrocarbon source rock, sandstone impedance, geophysical exploration, forward model, exploration
target