Advances in Earth Science ›› 2009, Vol. 24 ›› Issue (9): 1051-1056. doi: 10.11867/j.issn.1001-8166.2009.09.1051

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A Study of a New Method of Exploration Based on Reservoir Capacitivity

Liu Hongqi 1, Deng Youmin 2, Xia Hongquan 1, Qiu Chunning 1,Liu Shiqiong 1, Tang Hong 1, Jiang Chengsi 1   

  1. 1.Southwest Petroleum University, Chengdu 610500, China;
    2.Well Logging Company of Xinjiang Oilfield, Kelamayi 834000, China
  • Received:2009-04-21 Revised:2009-06-20 Online:2009-09-10 Published:2009-09-10

Liu Hongqi, Deng Youmin, Xia Hongquan, Qiu Chunning,Liu Shiqiong, Tang Hong. A Study of a New Method of Exploration Based on Reservoir Capacitivity[J]. Advances in Earth Science, 2009, 24(9): 1051-1056.

       This paper introduces the law that the capacitivity of NaCl solution changes with different salinity, different concentration and different measurement frequency. The experiments show that capacitivity of NaCl solution increases in square law with the concentration increasing, decreases in negative exponent law with the frequency increasing and, in negative exponent law with the pole distance increasing. Comparing with resistance of NaCl solution, it shows capacitivity change larger than resistance under the same condition. Based on the results of these experiments, this paper provides a new concept, i.e. the secondary dielectric constant whose distinctive difference with dielectric constant is that it directly detects the dielectric characteristics of electrolyte. This paper also provides a new exploration method, surface capacitivity exploration. The new instrument can be improved on the dual-laterolog apparatus. By this method, it can not only detect oil or gas reservoir, but also detect other mental ores.

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