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Drilling fluid rheology-simulated and measured friction pressure losses from a well SS-12 in Tanzania.

Rukonu, Daniel Charles
Master thesis
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URI
http://hdl.handle.net/11250/2615100
Date
2017
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  • Institutt for geovitenskap og petroleum [2169]
Abstract
A study of Drilling fluid rheology-Simulated and friction pressures losses was carried in Well SS-12, Tanzania.Three rheological models were used,Such as Bingham plastic ,power law and Herschel-Bulklely model.The rheological study in three section of a well ss-12,indicated that the fluid used existed a yield pseudo plastic behavior due to low Root mean square error (RMSE) as compared to others method.

The friction pressure losses calculated using the three models were good when Herschel-Bulkley model and power law model were applied.

A sensitivity study based on extrapolated yield stress,Nozzle sizes,BHA length and drill pipe inner and outer diameter had shown Herschel-Buckley model to approximate well pressure drop in well ss-12.

Hence ,it was concluded that Herschel-Buckley a best fit model for drilling fluid rheology and friction pressure losses predictions.
Publisher
NTNU

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