STUDY ON THE INFLUENTIAL FACTOR ON CEMENT SLURRY’S RHEOLOGY

The rheology of cement slurry is an important process parameter during the cementing operation of cement engineering,and decides the state of cement slurry in annular space.So it is the key point of cement slurry’s compound design and the precondition of safe operation.The effect of composition on rheology of cement slurry was studied in this paper,based on experiments presented,including slurry composition(gypsum,surface to per unit volume, additives),working environments(temperature,pressure),operation parameter(stirring time,stirring rate) and slurry parameter(water cement ratio).The result of experiments indicates that:when any of the gypsum addition and the surface to per unit volume increases,the flow property of cement slurry come to be bad totally,and it will change a little when the surface to per unit varies between 320 and 350 m2/kg.Cement slurry’s rheology can be enhanced through increasing the stirring rate and extending the stirring time.Temperature has obvious influence on the rheology of cement slurry while pressure has little influence on it.