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Substitution of phosphate slime for bentonite in geothermal well drilling fluids.

Authors
Goode-AH; Sadler-LY III
Source
Tuscaloosa, AL: U.S. Department of the Interior, Bureau of Mines, RI 8032, 1975 Apr; :1-8
NIOSHTIC No.
10007614
Abstract
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.
Keywords
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
Publication Date
19750401
Document Type
IH; Report of Investigations
Fiscal Year
1975
NTIS Accession No.
PB-242129
NTIS Price
A03
Identifying No.
RI-8032
NIOSH Division
TURC
Source Name
Tuscaloosa, AL: U.S. Department of the Interior, Bureau of Mines, RI 8032
State
AL
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