Lithologic Reservoirs ›› 2007, Vol. 19 ›› Issue (3): 89-92.doi: 10.3969/j.issn.1673-8926.2007.03.015

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Hydrocarbon saturation determined by dual-TE logging

HE Zongbin 1,2,NI Jing3,WU Dong4,LI Yong4,LIU Liqiong5,TAI Huaizhong5   

  1. 1. Key Laboratory of Exploration Technologies for Oil and Gas Resources , Ministry of Education , Yangtze University , Jingzhou 434023 , China;
    2. School of Ocean and Earth Science , Tongji University , Shanghai 200092 , China;
    3. Jingzhou Mechanical & Electronics Industry School, Jingzhou 434000 , China;
    4. Well Logging Company , Liaohe Oilfield ,PetroChina , Panjin 124011 , China;
    5. Research Institute of Petroleum Exploration and development , Henan Oilfield , Sinopec , Nanyang 473132 , China
  • Online:2007-09-15 Published:2007-09-15

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Abstract:

According to dual-TE logging , intrinsic relaxation time T2int and t he T2int deviation between hydrocarbon and water can be obtained , which can be used to discriminate the formation fluid property and evaluate the hydrocarbon saturation. It is using T2int deviation to obtain volumes of the movable hydrocarbon and movable water , and using cutoff value to determine the volume of capillary bound water . The hydrocarbon saturation could be obtained after these volumes were calibrated by hydrocarbon index. This method has been compiled to FLAN module for oil and gas identification and evaluation by nuclear magnetic resonance log. The real data of many wells are processed by this module. The result proves a good effect .

Key words: reservoir, throat radius, movable fluid, start-up pressure, classification evaluation

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