China Petroleum Exploration ›› 2005, Vol. 10 ›› Issue (3): 46-49,71.

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Application of Element Capture Spectroscopy Logging inChangqingGas Exploration

Hou Yuting and and Li Gaoren   

  1. Hou Yuting 1 and Li Gaoren 2 // 1 Department of Geology,Northwest University ,Xi?an City,Shaanxi Province 710069 China;2 Exploration & Development Institute Changqing Oilfield Company,Xi?an City, Shaanxi Province 710021
  • Online:2005-06-15 Published:2005-06-15

Abstract: Based on the features ofmudstone with higher gamma ray than sandstone in sandstone -mudstone section,we can distinguish sandstone reservoir from the drilling profiles with gamma ray log.But this method is not reliable ,for instance,when the clay types change or sandstone reservoir contain some high radiation elements ,the gamma ray value of the reservoir is usually high,resulting in mistaking the sandstone reservoir with high gamma ray for mudstone one.ECS (Element Capture Spectroscopy)logging can effectively distinguish this kind of sandstone reservoir through measuring different elements capture spectroscopy of strata

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