... scale mixing tests were also carried out by varying energy input to simulate the pipeline wall shear. Test results indicate that the peak shear rate applied in pumping using a centrifugal pump can cause significant processability problems as noted in a four-fold increase in water content of the product...

... string andthe drilled hole parameters such as pressure, temperature of the penetratedformation, circulation rate, and the shear rates. Pressure drop and the flowrates data measured across the pipe viscometer are used to profile the flowdiagrams and consistency curves of each batch. A series of data...

.... In addition, the viscosity building which does take place is highly sensitive to heating and to further shearing. Time at shear and rate of shear were both found to be important in determining fluid properties. Borate crosslinked fluids have the ability to recover much of their viscosity when the shear rate...

... Abstract Emulsions were prepared with a California crude oil and tap water by stabilizing with a nonionic emulsifier (Triton X-114). Their rheological properties were studied as a function of composition, temperature, and shear rate. Those having high concentrations of the dispersed phase...

... (laminar or turbulent). Accurate annular pressure losses. Approximate bit nozzle shear rates. Upper and lower limits on both flow properties and pump rates for optimum well bore stabilization and minimum E.C.D. (Equivalent Circulation Density). Approximate ascending velocity of cuttings...