Studies in the past have looked at the pressure and temperature effects in respect to diesel-based mud systems, but with the introduction of new mineral-base oils, the need for pressure/temperature testing has again become an item of great interest.

Questions have been raised as to the possible differences in characteristics which muds might have in the areas of annular flow dynamics, bit hydraulics, and carrying capacity under actual downhole temperatures and pressures.

The prime reason that there has been little inspection into these areas has been the lack of good base data which could be used in some of the already existing calculation methods available to the industry.

Keywords:
oil mud, viscosity reduction, oil water ratio, toxic oil mud, upstream oil & gas, drilling fluid chemistry, field mud, looof, pressure rheology, drilling fluid property
Subjects:
Drilling Fluids and Materials, Drilling fluid selection and formulation (chemistry, properties), Drilling fluid management & disposal
Copyright 1983, Society of Petroleum Engineers of AIME
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