Effect of high temperature, high pressure, and aging on water-based drilling fluids

  • Mohammed Shahjahan Ali*
  • , Muhammad A. Al-Marhoun
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

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 languageEnglish
JournalSociety of Petroleum Engineers of AIME, (Paper) SPE
StatePublished - 1990

ASJC Scopus subject areas

  • General Engineering

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