Lithologic Reservoirs ›› 2013, Vol. 25 ›› Issue (6): 30-34.doi: 10.3969/j.issn.1673-8926.2013.06.006

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Model and technologies of subtle traps identification in irregular geologic body: An example of fan body traps

LUO Qun1， WANG Chongxiao2， TANG Min3， HUANG Handong4   

  1. 1. Institute of Unconventional Natural Gas， China University of Petroleum， Beijing 102200， China； 2. Research Institute of Exploration and Development, PetroChina Yumen Oilfield Company， Jiuquan 735000， China； 3. Research Institute of Exploration and Development， PetroChina Jilin Oilfield Company， Songyuan 138000， China； 4. Institute of Enhanced Oil Recovery， China University of Petroleum， Beijing 102200， China
  • Online:2013-11-26 Published:2013-11-26

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Abstract:

It is difficult to effectively forecast irregular geologic body by using common geophysical techniques because of its strong elusive features and great difficulties on identification. Seismic sedimentology and geophysical techniques provide favorable theory guidance and technical support for effectively forecasting subtle traps in irregular geologic body. Setting up correlative relationship among seismic attributes, sedimentary facies and subtle traps is the basis for effectively identifying subtle traps, and seismic facies analysis, wavelet frequency-division, facies controlling inversion are the key techniques. The prediction and exploration of fan body traps of lower Sha 3 member in Che 15 well field in Chezhen Sag show that the model of “integration of seismic and geologic, integration of theory and techniques” for subtle traps identifyication has greater application value.

Key words: large fracture-cavity aggregate, seismic attributes, geostatistical inversion, static and dynamic characterization, Tarim Basin

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