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Effects of time and shear energy on the rheological behaviour of oilwell cement slurries
In the present study, it has been evaluated if the configuration of the high-speed mixer propeller blades used in cement slurry preparation done in accordance with API specifications does influence the input of mixing energy applied to the cement slurry. It has been shown that the term specific mixing energy (SME) is not valid for all types of slurries. It has also been shown through a comparison between a Vicat apparatus series of experiments and a consistometer study that there is no direct link between the consistometer data and the initial set of a cement slurry. Furthermore, the Vicat test was found not to give the initial set either. Finally, the study investigated the effect of mixing energy input on viscous properties and gel formation properties of the slurries. A drop in viscosity as a function of mixing energy has previously been considered to be a result of a structural breakdown. In the present study, it is suggested that this drop is a result of change in cement morphology.
Effects of time and shear energy on the rheological behaviour of oilwell cement slurries
In the present study, it has been evaluated if the configuration of the high-speed mixer propeller blades used in cement slurry preparation done in accordance with API specifications does influence the input of mixing energy applied to the cement slurry. It has been shown that the term specific mixing energy (SME) is not valid for all types of slurries. It has also been shown through a comparison between a Vicat apparatus series of experiments and a consistometer study that there is no direct link between the consistometer data and the initial set of a cement slurry. Furthermore, the Vicat test was found not to give the initial set either. Finally, the study investigated the effect of mixing energy input on viscous properties and gel formation properties of the slurries. A drop in viscosity as a function of mixing energy has previously been considered to be a result of a structural breakdown. In the present study, it is suggested that this drop is a result of change in cement morphology.
Effects of time and shear energy on the rheological behaviour of oilwell cement slurries
Hodne, H. (author) / Saasen, A. (author) / O'Hagan, A.B. (author) / Wick, S.O. (author)
Cement and Concrete Research ; 30 ; 1759-1766
2000
8 Seiten, 15 Quellen
Article (Journal)
English
Effects of time and shear energy on the rheological behaviour of oilwell cement slurries
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