Rheological and thermal analysis of bentonites for water base drilling fluids


ENERGY SOURCES, vol.26, no.2, pp.145-151, 2004 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 26 Issue: 2
  • Publication Date: 2004
  • Doi Number: 10.1080/00908310490258524
  • Journal Name: ENERGY SOURCES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.145-151
  • Keywords: rheology, bentonite, thermal analysis, drilling fluid, rheological model
  • Middle East Technical University Affiliated: Yes


The objective of this research is to investigate the rheological and thermal properties of bentonites for water base drilling fluids. Rheological experiments were performed with 4 different bentonite samples and clay percentages, cation-exchange capacity (CEC), swelling volume, pH, and physical and rheological properties of the samples are determined. The thermal behaviors of bentonite samples were investigated using simultaneous thermogravimetry (TG/DTG) and differential thermal analysis (DTA) techniques. It was observed that all bentonite samples exhibit 2 weight loss events on heating. Similar behavior was observed with the bentonite samples studied in the literature.