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A hybrid method to segment the pores and throats of micromodels

  • Bei Wei
  • Jian HouEmail author
  • Zhongqing Lei
  • Huiyu Wang
Original Paper
  • 66 Downloads

Abstract

Micromodels made of silicon wafer are widely used in microfluidic system or oil displacement visual experiment. In this study, we develop a technique to partition the pores and throats of 2D porous micromodels, based on which the porous media structure could be described quantitatively. First, two series of medial axis are obtained based on the watershed algorithm and thinning algorithm, respectively. The thinning medial axis can be divided into four parts, i.e., node, endpoint, trunk, and branch, while the watershed medial axis does not have an endpoint. Then, the segmentation of pores and throats is initially carried out based on the watershed medial axis, and the interface of pore and throat is identified using the wavelet denoising method. Subsequently, the dead ends are further segmented, induced by the endpoints of thinning medial axis. Finally, we verify the method using the regular models and describe a random network micromodel quantitatively. The hybrid method not only accurately guarantees the medial axis located in the middle center but also keeps all the structure information of pore dead ends.

Keywords

Micromodels Medial axis Thinning algorithm Watershed algorithm Dead ends 

Notes

Funding information

The study received financial support from the National Key R&D Program of China (Grant no. 2018YFA0702400), the National Natural Science Foundation of China (Grant no. 51574269), the National Science Foundation for Distinguished Young Scholars of China (Grant No. 51625403), the Important National Science, and Technology Specific Projects of China (Grant no. 2016ZX05011-003)

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Copyright information

© Saudi Society for Geosciences 2019

Authors and Affiliations

  • Bei Wei
    • 1
    • 2
  • Jian Hou
    • 1
    • 2
    • 3
    Email author
  • Zhongqing Lei
    • 4
  • Huiyu Wang
    • 1
    • 2
  1. 1.Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China))Ministry of EducationQingdaoChina
  2. 2.School of Petroleum EngineeringChina University of Petroleum (East China)QingdaoChina
  3. 3.Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and TechnologyQingdaoChina
  4. 4.Gudao Oil Prduction PlantShengli OilfieldDongyingChina

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