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Experimental Study on Multi-Layer Waterflooding in Low-Permeability Carbonate Reservoirs by NMR

  • Xingwang Shi
  • Zhengming Yang
  • Yapu Zhang
  • Guangya Zhu
  • Qianhua Xiao
Conference paper
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)

Abstract

In consideration of the heterogeneity of low-permeability carbonate reservoir in M reservoirs of H oilfield, carried out multi-layer waterflooding physical simulation experiment, and based on the nuclear magnetic resonance (NMR) technique, studied the micro-distribution of residual oil and recovery degree of three different permeability combination. Results show that to the different pore structure types, NMR tests have different The greater permeability, NMR T2 relaxation spectrum further to right, the higher the peak, indicating more movable fluid. The difference of permeability range has certain influence on residual oil and recovery degree of multi-layer waterflooding, residual oil, and recovery degree in absolute and relative values of different permeability combination are quite different. The larger the permeability contrast, small pores have less residual oil relative value and greater recovery degree relative value; residual oil and recovery degree absolute values are mainly distributed in large pores, less in small pores. In same permeability contrast, the low-permeability samples of residual oil are greater than high-permeability samples, and the exploitation potential of large pores is still enormous.

Keywords

Multi-layer waterflooding Low-permeability reservoir Carbonate reservoir NMR 

Notes

Acknowledgements

Thanks to my tutors, Dr. Yang Zhengming and Zhang Yapu, for their professional guidance and patient supervisions.

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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Xingwang Shi
    • 1
    • 2
  • Zhengming Yang
    • 2
    • 3
  • Yapu Zhang
    • 2
    • 3
  • Guangya Zhu
    • 3
  • Qianhua Xiao
    • 4
  1. 1.University of Chinese Academy of SciencesBeijingChina
  2. 2.Department of Porous Flow & Fluid Mechanics of Chinese Academy of SciencesLangfangChina
  3. 3.PetroChina Research Institute of Petroleum Exploration and DevelopmentBeijingChina
  4. 4.Chongqing University of Science and TechnologyChongqingChina

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