Abstract
Summary This paper presents the results of 24 discrete slurries tested on a pipe flow loop while data were taken simultaneously with a flow-through rotational viscometer. Each slurry was pumped through four different pipe sizes at rates from low laminar to high turbulent flow regimes. Test slurries varied from very thixotropic to highly dispersed and from lightweight to dense. Analysis of pipe-flow data showed a correlation best described by a Bingham-plastic model. Standard flow properties calculated from the rotational-viscometer data were correlated to flow properties derived from the pipe-flow data. These results could be used to calculate pipe pressure losses with improved accuracy. Correlations for estimating friction losses of cement slurries in laminar and turbulent flow regimes and for predicting laminar/turbulent transition were developed. Results of these correlations are compared with the findings of previous investigators. An example illustrates the use of these correlations.
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