Erlend H. Vefring, Bjorn-Tore Anfinsen, Knut Steinar Bjorkevoll, Rolv Rommetveit RF-Rogaland Research Bergen, Norway A simulator accurately predicts downhole pressures and temperatures in high pressure, high temperature (HPHT) wells by using a dynamic and two dimensional mathematical model. The model accounts for heat transfer between the well bore fluid and surroundings. Results from the simulator compare reasonably well with results from actual offshore wells. At HPHT conditions, traditional models for rheology and density are inaccurate. Advanced models for rheological properties and density have therefore been developed ...

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