Mechanical and Microstructural Studies of Nanoclay Based Oil Well Cement Mix under High Pressure and Temperature Application

2016 ◽  
Author(s):  
M. Murtaza ◽  
M. K. Rahman ◽  
A. A. Al-Majed
Keyword(s):  
High Pressure ◽  
Oil Well ◽  
High Pressure And Temperature ◽  
Oil Well Cement ◽  
Temperature Application ◽  
Well Cement ◽  
Microstructural Studies

scholarly journals Rietveld Quantitative Phase Analysis of Oil Well Cement: In Situ Hydration Study at 150 Bars and 150 °C

Materials ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 1897 ◽  
Author(s):  
Edmundo Fraga ◽  
Ana Cuesta ◽  
Jesus Zea-Garcia ◽  
Angeles De la Torre ◽  
Armando Yáñez-Casal ◽  
...  
Keyword(s):  
High Pressure ◽  
Powder Diffraction ◽  
High Energy ◽  
Ex Situ ◽  
Oil Well ◽  
High Pressure And Temperature ◽  
Quantitative Phase ◽  
Oil Well Cement ◽  
Well Cement

Oil and gas well cements are multimineral materials that hydrate under high pressure and temperature. Their overall reactivity at early ages is studied by a number of techniques including through the use of the consistometer. However, for a proper understanding of the performance of these cements in the field, the reactivity of every component, in real-world conditions, must be analysed. To date, in situ high energy synchrotron powder diffraction studies of hydrating oil well cement pastes have been carried out, but the quality of the data was not appropriated for Rietveld quantitative phase analyses. Therefore, the phase reactivities were followed by the inspection of the evolution of non-overlapped diffraction peaks. Very recently, we have developed a new cell specially designed to rotate under high pressure and temperature. Here, this spinning capillary cell is used for in situ studies of the hydration of a commercial oil well cement paste at 150 bars and 150 °C. The powder diffraction data were analysed by the Rietveld method to quantitatively determine the reactivities of each component phase. The reaction degree of alite was 90% after 7 h, and that of belite was 42% at 14 h. These analyses are accurate, as the in situ measured crystalline portlandite content at the end of the experiment, 12.9 wt%, compares relatively well with the value determined ex situ by thermal analysis, i.e., 14.0 wt%. The crystalline calcium silicates forming at 150 bars and 150 °C are also discussed.

Behavior of oil well cement slurry systems aged in CO2-saturated water under high pressure and temperature

2020 ◽  
Author(s):  
Jonathan Dias Nascimento ◽  
Camila Aparecida Abelha Rocha ◽  
Cristina Aiex Simão ◽  
Romildo Dias Toledo Filho
Keyword(s):  
High Pressure ◽  
Oil Well ◽  
Cement Slurry ◽  
High Pressure And Temperature ◽  
Saturated Water ◽  
Oil Well Cement ◽  
Well Cement

Long-term strength retrogression of silica-enriched oil well cement: A comprehensive multi-approach analysis

2021 ◽  
Vol 144 ◽  
pp. 106424 ◽  
Author(s):  
Xueyu Pang ◽  
Jiankun Qin ◽  
Lijun Sun ◽  
Ge Zhang ◽  
Honglu Wang
Keyword(s):  
Oil Well ◽  
Term Strength ◽  
Oil Well Cement ◽  
Well Cement
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