An experimental investigation of the effects of ultra-high pressure and temperature on the rheological properties of water-based drilling fluids

Mahmood Amani, Mohammed Al-Jubouri

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Tremendous amounts of hydrocarbons are located in deeper formations. In deep formations we experience higher pressures and temperatures. Designing a proper drilling fluid that can tolerate such high-pressure, high-temperature (HP/HT) conditions is very challenging. This work is focused on investigating the rheological behavior of water-based drilling fluids with different properties at extremely high pressure and temperature conditions using a state-of-the-art viscometer capable of measuring drilling fluids properties up to 600°F and 40,000 psig. The results of this study show that the viscosity, yield point and gel strength decrease exponentially with increasing temperature until the mud samples fail. This behavior is the result of the thermal degradation of the solid, polymers, and other components of the mud samples. Increase in the distance between molecules due to high temperature will lower the resistance of the fluid to flow and, hence, its viscosity, yield point, and gel strength will reduce. Moreover, conducting this study led to the conclusion that viscosity, yield point, and gel strength increase linearly as the pressure increase. Pressure's effect on these parameters, however, is more apparent at lower temperatures. Ultimately, the study concluded that the mud samples that were used, which are standard industrial types, failed at a temperature of 250°F and that the combined effect of temperature and pressure on mud's rheology is complex.

Original languageEnglish
Title of host publicationSociety of Petroleum Engineers - SPE/APPEA Int. Conference on Health, Safety and Environment in Oil and Gas Exploration and Production 2012
Subtitle of host publicationProtecting People and the Environment - Evolving Challenges
PublisherSociety of Petroleum Engineers
Pages1661-1669
Number of pages9
ISBN (Print)9781622763931
Publication statusPublished - 1 Jan 2012
Externally publishedYes
EventSPE/APPEA International Conference on Health, Safety and Environment in Oil and Gas Exploration and Production 2012: Protecting People and the Environment - Evolving Challenges - Perth, WA, Australia
Duration: 11 Sep 201213 Sep 2012

Publication series

NameSociety of Petroleum Engineers - SPE/APPEA Int. Conference on Health, Safety and Environment in Oil and Gas Exploration and Production 2012: Protecting People and the Environment - Evolving Challenges
Volume2

Other

OtherSPE/APPEA International Conference on Health, Safety and Environment in Oil and Gas Exploration and Production 2012: Protecting People and the Environment - Evolving Challenges
CountryAustralia
CityPerth, WA
Period11/9/1213/9/12

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ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Safety, Risk, Reliability and Quality
  • Environmental Engineering
  • Energy Engineering and Power Technology
  • Environmental Science(all)

Cite this

Amani, M., & Al-Jubouri, M. (2012). An experimental investigation of the effects of ultra-high pressure and temperature on the rheological properties of water-based drilling fluids. In Society of Petroleum Engineers - SPE/APPEA Int. Conference on Health, Safety and Environment in Oil and Gas Exploration and Production 2012: Protecting People and the Environment - Evolving Challenges (pp. 1661-1669). (Society of Petroleum Engineers - SPE/APPEA Int. Conference on Health, Safety and Environment in Oil and Gas Exploration and Production 2012: Protecting People and the Environment - Evolving Challenges; Vol. 2). Society of Petroleum Engineers.