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Characteristics and Origin of Low-Resistivity Reservoir Controlled by Petrophysics Mechanism and Geology Target Optimization

YANG Chun-mei1, 2, ZHANG Ji-chang1, 3   

  1. 1.College of Resources and Safety Engineering, China University of Mining and Technology, Beijing 100083,China;2.Research Institute of Petroleum Exploration ＆ Development, PetroChina, Beijing 100083,China;3. Liaohe Oilfield PetroChina, Panjin, Liaoning 124010,China
  • Received:2008-10-10 Revised:1900-01-01 Online:2009-03-26 Published:2009-03-26
  • Contact: YANG Chun-mei

Abstract: A relationship between petrophysical and geological genesis of low resistivity contrast pay has been established. Combined analysis of sedimentary environment，diagenesis and tectonic evolution has been applied to obtain the origin characteristics of low resistivity contrast pay. Five typical low resistivity exploration targets have been presented: (1) low-relief lithologic-structural traps in the gentle-slope depositional system, (2) natural water-flooding areas with fluid heterogeneity characteristics in relatively active tectonic movement zone, (3) shallow layers with high content of montmorillonite among clay mineral and slowly depositional fine sandstone layers, (4) weakly hydrodynamic thin multilateral sand and shale with resistivity anisotropy and (5) electrical conductivity mineral developed areas such as pyrite. However, the effect of mud invasion on formation resistivity is engineering reason.

Key words: low-resistivity reservoir, additional clay conductivity, low-relief structure, natural water-flooding, electrical conductivity mineral, resistivity anisotropy, fluid heterogeneity, reservoirs

CLC Number: 

  • P631.3
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