IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v11y2018i2p385-d130647.html
   My bibliography  Save this article

The Effects of NaCl Concentration and Confining Pressure on Mechanical and Acoustic Behaviors of Brine-Saturated Sandstone

Author

Listed:
  • Yan-Hua Huang

    (State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China
    GeoEnergy Research Centre, Faculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, UK)

  • Sheng-Qi Yang

    (State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China)

  • Matthew R. Hall

    (GeoEnergy Research Centre, Faculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, UK)

  • Yuan-Chao Zhang

    (State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China)

Abstract

To better understand the mechanical behavior of rock with brine saturation, conventional triaxial experiments were carried out on sandstone for a range of confining pressures (0–60 MPa) and NaCl concentrations (0–30%). As the confining pressure and NaCl concentration increased, the triaxial compressive strength, crack damage threshold, Young’s modulus, cohesion, and internal friction angle all increased. Real-time ultrasonic wave and acoustic emission (AE) techniques were used to obtain the relationship between acoustic behavior and stress level during the whole triaxial compression process. During the whole deformation process, the evolution of P-wave velocity and accumulated AE count could be divided into four phases. The microstructural characteristics of brine-saturated sandstone, before and after loading, indicated that the strength enhancement mechanism may be attributed to an increase in inter-particle friction resulting from salt crystallisation around the points of contact. The angle of friction increased by more than 86% at maximum NaCl concentration compared to that for distilled water. The NaCl deposition in the pore space resulted in nonlinear strength increases for the brine-saturated sandstone specimens with increasing salinity. The present study is expected to improve the knowledge of the strength and failure mechanisms of sedimentary rock in deep saline aquifers.

Suggested Citation

  • Yan-Hua Huang & Sheng-Qi Yang & Matthew R. Hall & Yuan-Chao Zhang, 2018. "The Effects of NaCl Concentration and Confining Pressure on Mechanical and Acoustic Behaviors of Brine-Saturated Sandstone," Energies, MDPI, vol. 11(2), pages 1-17, February.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:2:p:385-:d:130647
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/11/2/385/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/11/2/385/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Nasvi, M.C.M. & Ranjith, P.G. & Sanjayan, J. & Haque, A. & Li, Xiao, 2014. "Mechanical behaviour of wellbore materials saturated in brine water with different salinity levels," Energy, Elsevier, vol. 66(C), pages 239-249.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Xiaogang Zhang & Ranjith Pathegama Gamage & Mandadige Samintha Anne Perera & Ashani Savinda Ranathunga, 2018. "Effects of Water and Brine Saturation on Mechanical Property Alterations of Brown Coal," Energies, MDPI, vol. 11(5), pages 1-17, May.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Yang, Xianyu & Cai, Jihua & Jiang, Guosheng & Xie, Jingyu & Shi, Yanping & Chen, Shuya & Yue, Ye & Yu, Lang & He, Yichao & Xie, Kunzhi, 2020. "Nanoparticle plugging prediction of shale pores: A numerical and experimental study," Energy, Elsevier, vol. 208(C).
    2. Ayal Wanniarachchi & Ranjith Pathegama Gamage & Qiao Lyu & Samintha Perera & Hiruni Wickramarathne & Tharaka Rathnaweera, 2018. "Mechanical Characterization of Low Permeable Siltstone under Different Reservoir Saturation Conditions: An Experimental Study," Energies, MDPI, vol. 12(1), pages 1-21, December.
    3. Yang, Xianyu & Cai, Jihua & Jiang, Guosheng & Zhang, Yungen & Shi, Yanping & Chen, Shuya & Yue, Ye & Wei, Zhaohui & Yin, Dezhan & Li, Hua, 2022. "Modeling of nanoparticle fluid microscopic plugging effect on horizontal and vertical wellbore of shale gas," Energy, Elsevier, vol. 239(PB).
    4. Radhika Vidanage De Silva & Ranjith Pathegama Gamage & Mandadige Samintha Anne Perera, 2016. "An Alternative to Conventional Rock Fragmentation Methods Using SCDA: A Review," Energies, MDPI, vol. 9(11), pages 1-31, November.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:11:y:2018:i:2:p:385-:d:130647. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.