Journal of Jilin University(Earth Science Edition) ›› 2016, Vol. 46 ›› Issue (1): 279-285.doi: 10.13278/j.cnki.jjuese.201601305

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Method of Permeability Model Establishment Based on the Complex Reservoir Controlled by Particle-Size

Zhao Jun1, Dai Xinyun1, Gu Li1, Qi Xinzhong2, Chen Weizhong2   

  1. 1. School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China;
    2. Research Institute of Tarim Oilfield Company, CNPC, Kuerle 841000, Xinjiang, China
  • Received:2015-04-01 Online:2016-01-26 Published:2016-01-26
  • Supported by:

    Supported by Special National Five-Year Plan(2011ZX05013-006-008)

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Abstract:

Particle-size is one of the main feature of sedimentary rock structures, the main indicators to evaluate the rock lithology, and also the main controlling factors on the sediment's permeability. As the sedimentary environment manifests differences in vertical, the permeability controlled by particle-size also shows heterogeneity in vertical. In order to describe the heterogeneity of the permeability caused by particle-size precisely, the authors utilize GR, CNL, DEN, and DT curves, combine with the particle-size analysis data of cores, abstract several parameters which are sensitive to particle-size, and set up a model to calculate the particle-size. Then, the permeability model under the conditions of different particle sizes is established. Through field data processing and contrast of core data, this model has been proved to be feasible in reflecting the control mechanism of sediment particle-size to the permeability, and in describing the heterogeneity of the permeability in reservoirs with complex lithology more precisely. A more accurate permeability profile is thereby provided for geological research and development.

Key words: well logging, complex reservoir, permeability, particle-size, heterogeneity

CLC Number: 

  • P631.8

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