Accurate knowledge of drilling fluid behavior under actual conditions is required to maximize operational efficiency and to minimize cost and drilling fluid related risks on extreme high-pressure / high-temperature (HP/HT) wells.

This paper identifies and discusses the major HP/HT drilling fluid challenges, recent innovations in fluid viscosity measurements under HP/HT conditions, drilling fluid designs stable to extreme HP/HT conditions, and other considerations in HP/HT drilling.

Keywords:
drilling fluids and materials, concentration, gas solubility, oil mud, drilling fluid selection and formulation, Upstream Oil & Gas, Efficiency, drilling fluid chemistry, iadc spe 103731, drilling fluid formulation
Subjects:
Drilling Operations, Pressure Management, Drilling Equipment, Drilling Fluids and Materials, Well & Reservoir Surveillance and Monitoring, Fluid Characterization, Formation Evaluation & Management, Unconventional and Complex Reservoirs, Well control, Drilling fluid selection and formulation (chemistry, properties)
Copyright 2006, Society of Petroleum Engineers
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