TY - GEN
T1 - Fundamental investigation of the chemical and mechanical properties of high-temperature-cured oilwell cements
AU - Thomas, Jeffrey J.
AU - James, Simon
AU - Ortega, J. Alberto
AU - Musso, Simone
AU - Auzerais, Francois
AU - Krakowiak, Konrad J.
AU - Akono, Ange Therese
AU - Ulm, Franz Josef
AU - Pellenq, Roland J M
PY - 2012
Y1 - 2012
N2 - 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).
AB - 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).
UR - http://www.scopus.com/inward/record.url?scp=84865857322&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84865857322&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84865857322
SN - 9781622760244
T3 - Offshore Technology Conference, Proceedings
SP - 3277
EP - 3287
BT - Offshore Technology Conference 2012, OTC 2012
T2 - Offshore Technology Conference 2012, OTC 2012
Y2 - 30 April 2012 through 3 May 2012
ER -