Lithologic Reservoirs ›› 2014, Vol. 26 ›› Issue (5): 30-35.doi: 10.3969/j.issn.1673-8926.2014.05.006

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Study on genetic type of micropore in shale reservoir

HE Jianhua1,2,3，DING Wenlong1,2,3，FU Jinglong2，LI Ang3，DAI Peng3   

  1. 1. School of Energy Resources， China University of Geosciences， Beijing 100083， China； 2. Key Laboratory for Marine Reservoir Evolution and Hydrocarbon Abundance Mechanism， Ministry of Education， China University of Geosciences，Beijing 100083， China； 3. Key Laboratory for Shale Gas Exploitation and Assessment，Ministry of Land and Resources， China University of Geosciences， Beijing 100083， China
  • Online:2014-10-20 Published:2014-10-20

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Abstract:

By using field emission scanning electron microscope, this paper observed and described the size, shape, distribution and seepage characteristics of micropore in dark shale in northern and northwestern Guizhou. Based on the genesis, the pores were divided into three categories: primary sedimentary pores, secondary pores and mixed pores. Based on the development location, the pores were divided into ten sub-categories, such as intergranular pores, intra- crystalline pores, fossiliferous pores, organic matter pores and so on. The influencing factors for the pore development and the pore evolution characteristics of shale were discussed, which has important theoretical and practical significance forthestudyonshalereservoir.

Key words:  edge water incursion, ellipse, coordinate transformation, conformal mapping, productivity of horizontal well

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