Abstract
Drilling fluid property changes due to elevated temperature and aging time frequently cause problems in drilling deep wells. A laboratory investigation of the effect of high temperature (490°F), high pressure(10000 psig) and long aging time (30 days) on water-base drilling fluid properties is made with Fann Model 70 HTHP Viscometer and Baroid Roller Oven. The results show a decrease in viscosity, yield point and gel strength with the increase in temperature. Shear stress for a particular temperature increases with the increase in shear rate, but shear stress at a given shear rate decreases with the increase in temperature. Viscosity, yield point and gel strength at a given temperature increase with aging time and aging effects are diminishing with the increase in aging time. Shear stress at a given shear rate increases with aging time and aging effects decrease with the increase in aging time. Pressure increases the values of rheological properties of the drilling fluid.
| Original language | English |
|---|---|
| Journal | Society of Petroleum Engineers of AIME, (Paper) SPE |
| State | Published - 1990 |
ASJC Scopus subject areas
- General Engineering
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