Fundamental investigation of the chemical and mechanical properties of high-temperature-cured oilwell cements

Jeffrey J. Thomas*, Simon James, J. Alberto Ortega, Simone Musso, Francois Auzerais, Konrad J. Krakowiak, Ange Therese Akono, Franz Josef Ulm, Roland J M Pellenq

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

With the search for hydrocarbons moving to more extreme environments, including deepwater, one of the challenges associated with cementing is ensuring the long-term integrity and mechanical properties of the cement at high temperatures (HT). To avoid strength retrogression at above 110°C, silica is added to the cement. This makes the hydration process more complex, as initially formed hydration products are replaced by more stable phases over time. The nanostructure and mechanical properties of HT-cured cement were studied. At HT, there was a general coarsening of the nanometer-scale structure of the set cement paste over time, with associated degradation of the properties. The rate of coarsening depended strongly on the initial curing conditions, providing possible strategies for improving the properties and performance of HT-cured cement. This is an abstract of a paper presented at the Offshore Technology Conference 2012 (Houston, TX 4/30/2012-5/3/2012).

Original languageEnglish (US)
Title of host publicationOffshore Technology Conference 2012, OTC 2012
Pages3277-3287
Number of pages11
StatePublished - Sep 12 2012
EventOffshore Technology Conference 2012, OTC 2012 - Houston, TX, United States
Duration: Apr 30 2012May 3 2012

Publication series

NameOffshore Technology Conference, Proceedings
Volume4
ISSN (Print)0160-3663

Other

OtherOffshore Technology Conference 2012, OTC 2012
CountryUnited States
CityHouston, TX
Period4/30/125/3/12

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Ocean Engineering
  • Energy Engineering and Power Technology
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Fundamental investigation of the chemical and mechanical properties of high-temperature-cured oilwell cements'. Together they form a unique fingerprint.

Cite this