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Experimental Study and Modeling of the Fracture Behavior, Mechanical Properties, and Bonding Strength of Oil Well Cement

Author

Listed:
  • Cumaraswamy Vipulanandan

    (Center for Innovative Grouting Materials and Technology (CIGMAT), Department of Civil and Environmental Engineering, University of Houston, Houston, TX 77204, USA)

  • Ahmed Salih Mohammed

    (Department of Civil Engineering, College of Engineering, University of Sulaimani, Sulaimaniyah 46001, Kurdistan Region, Iraq
    Engineering Department, Civil Engineering, American University of Iraq, Sulaimani (AUIS), Sulaimaniyah 46001, Kurdistan Region, Iraq)

  • Praveen Ramanathan

    (Department of Civil and Environmental Engineering, University of Houston, Houston, TX 77204, USA)

Abstract

This study aimed to analyze the outcomes of stress intensity factor (K I ) and new bond strength tests of oil well cement (class H) with a water-to-cement ratio (w/c) of 0.38. Mechanical properties of the cement paste, such as the compressive and flexural strengths, were tested and qualified at 1, 7, and 28 days of curing. The relationship between the elastic modulus and axial strain using the differential of the Vipulanandan p-q model for the cement paste was obtained. The stress intensity factor of the cement paste was between 0.3 and 0.6 MPa.m, and the crack tip opening displacement (CTOD) was between 2.798 and 6.254 µm at three different ratios between the initial notch height (a) and the thickness of the beam (d) (a/d = 0.3, 0.4, and 0.5). The nonlinear Vipulanandan p-q model was used to model the compressive and flexural stress–strain behavior of the cement at three curing times. The bonding strength between the cement and steel tube representing the casing in the borehole was 0.75, 1.89, and 2.59 MPa at 1, 7, and 28 days respectively.

Suggested Citation

  • Cumaraswamy Vipulanandan & Ahmed Salih Mohammed & Praveen Ramanathan, 2023. "Experimental Study and Modeling of the Fracture Behavior, Mechanical Properties, and Bonding Strength of Oil Well Cement," Sustainability, MDPI, vol. 15(12), pages 1-20, June.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:12:p:9566-:d:1170886
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