Substitution of phosphate slime for bentonite in geothermal well drilling fluids.
Goode-AH; Sadler-LY III
Tuscaloosa, AL: U.S. Department of the Interior, Bureau of Mines, RI 8032, 1975 Apr; :1-8
The advancement of high-temperature drilling fluid technology for application of geothermal environments is part of the Bureau of Mines program for more efficient development of our nation's energy resources. The bentonite constituent of water-base drilling fluids is sensitive to destabilization by high temperatures and salinity. A substitute material for bentonite, phosphate slime, which is reported to be saline resistant, was considered. These studies show that spray-dried slime suspensions have more favorable rheological behavior, but poorer filtration properties, as compared with bentonite suspensions. Work done in cooperation with the University of Alabama.
Geothermal-Energy; Drilling-fluids; Rheology; Geothermal-wells; Clays; High-temperature; Materials-testing; Phosphates; Physical-properties; Stability; Viscosity; Well-drilling; Drilling; Minerals; Oxygen-compounds; Phosphorus-compounds; Testing; Wells
IH; Report of Investigations
NTIS Accession No.
Tuscaloosa, AL: U.S. Department of the Interior, Bureau of Mines, RI 8032