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Effect of Nano and Micro Sized Particle Additives on the Mechanical Strength of Cement Plug

[+] Author Affiliations
Mesfin Belayneh, Bernt S. Aadnøy

University of Stavanger, Stavanger, Norway

Paper No. OMAE2015-41756, pp. V010T11A015; 10 pages
doi:10.1115/OMAE2015-41756
From:
  • ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 10: Petroleum Technology
  • St. John’s, Newfoundland, Canada, May 31–June 5, 2015
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-5658-1
  • Copyright © 2015 by ASME

abstract

Cements in oil wells are exposed to high temperatures, a high pressures and a degrading environment. These affect the mechanical strength of the cement over time. Cement is often part of well integrity problems, sometimes creating leak paths to surface, but also allowing sour reservoir gases to corrode casings.

Poor cement bond quality and casing corrosion are two fundamental problems with oil well cements. This paper presents the effect of vegetable fiber, nano- and micro particle additives on cement slurry. The mechanical strength of the cement plugs were analyzed through sonic measurement and uniaxial compressive test. The internal structure of the cement plugs were analyzed through Scanning Electron Microscope (SEM).

The test results show an improved internal structure, higher load carrying capacity, longer deformation and higher modulus of resilience.

Copyright © 2015 by ASME

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