西南石油大学学报(自然科学版)

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Resistivity Section Characteristics and Exploration of the Oil
Shale Layer in Tongchuan Area

Wang Kai, Zhang Xu, Tang Shengsong, Jiang Ting   

  1. Xi′ an Institute of Geology and Mineral Resources,Xi′ an,Shaanxi 710054,China
  • Online:2014-06-01 Published:2014-06-01

Abstract:

Abstract:In order to study the suitability and resolution of resistivity sounding method in oil shale region,we carried out
the resistivity sounding in Tongchuan Area,the south of Ordos Basin. Combined with drilling mud logging and discovery ore
situation,analysis of the oil shale section resistivity features by two methods is made,and the specific areas of oil shale layer
in the electrical section are selected. Oil shale layer thickness is thin and high resistance layer in target body,compared to bury
depth. In the obtained electrical section,the resolution of high resistance electrical oil shale layer is not very clear,but resistivity
isoline change of gradient zone corresponds well to oil shale layer position,indicating the oil shale layer position indirectly.
And through the comprehensive analysis of lithology and logging parameters,we think the gradient changes of resistivity values
with depth changes resistivity value with depth describes from electrical aspect the evolution of oil shale layer from shallow
lake sedimentary environment to half deep lacustrine environment. Therefore we conclude that resistivity sounding method can
achieve the purpose of the exploration of oil shale layer.

Key words: Key words:resistivity sounding method, gradient zone of resistivity isoline change, oil shale, shallow lake sedimentary,
Ordos Basin