Experimental study on rheology law of cementing slurry

The use of different cement slurry systems for cementing is the major means meeting the requirements of different strata. However, there is still a lack of systematic experimental study and theoretical analysis of the rheology law of it. Based on the four kinds of cement slurry systems commonly used now, using the experimental analysis of rheology, the variation of cement slurry at different water/cement ratio（w/c）, temperature and hydration stages is studied, and the correlation showing the variation of rheological parameters with temperature and time is established. It is shown that the rheology of cement slurry gets better with the increase of w/c and it is different within specific temperature range. But different slurry systems tend to change with different temperature. When the slurry gets hydrated increasingly, the rheological parameters decrease and the consistency coefficients increase. The study in this paper could provide important theoretical basis for the optimization of cementing design.