SWELLING POTENTIAL OF QUEENSTON SHALE IN LUBRICANT FLUIDS
HAYDER MOHAMMED SALIM AL-MAAMORI, M. HESHAM EL NAGGAR, SILVANA MICIC, LO K.Y.
In the proceedings of: GeoQuébec 2015: 68th Canadian Geotechnical Conference & 7th Canadian Permafrost ConferenceSession: Rock Mechanics and Engineering Geology I / Mécanique des roches et ingénierie géologique I
ABSTRACT: The effect of lubricant fluids used in the drilling process for microtunnels, such as polymers solution and bentonite slurry, on the swelling behaviour of Quuenston Shale from Southern Ontario was investigated. Lubricant fluids and fresh water were used as ambient fluids in a series of free swell tests performed on Queenston shales from Niagara and Milton regions. The tests results revealed a significant difference in the swelling behaviour of the Queenston Shales in these fluids. The polymers solution caused a significant suppression of the swelling of both Queenston shales, while the bentonite slurry caused moderate suppression of the swelling of Niagara Queenston shale, and a slight increase of the swelling of Milton Queenston shale, compared to water. This finding may have a significant impact on evaluating the swelling associated with the drilling process and in the design of underground structures in Queenston Shale.
RÉSUMÉ: L'effet des fluides lubrifiants sur le comportement du gonflement de schiste localisé au Sud de l'Ontario a été étudié. Deux fluides lubrifiants, une solution de polymères et un coulis de bentonite, ainsi que de l'eau fraîche ont été utilisés te de Queenston des régions de Niagara et de Milton. Les résultats des essais ont révélé une différence significative dans le comportement de gonflement du schiste de Queenston pour chacun des fluides par rapport au gonflement dans l'eau. La solution de polymères a provoqué une diminution marquée du gonflement pour les deux schistes de Queenston. Pour le coulis de bentonite, la diminution du gonflement du schiste de Queenston provenant de Niagara est moindre, tandis que le gonflement du schiste de Queenston dans l'évaluation du gonflement associée au processus de forage et dans la conception de structures souterraines dans le schiste de Queenston.
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HAYDER MOHAMMED SALIM AL-MAAMORI; M. HESHAM EL NAGGAR; SILVANA MICIC; LO K.Y. (2015) SWELLING POTENTIAL OF QUEENSTON SHALE IN LUBRICANT FLUIDS in GEO2015. Ottawa, Ontario: Canadian Geotechnical Society.
@article{534,author = HAYDER MOHAMMED SALIM AL-MAAMORI; M. HESHAM EL NAGGAR; SILVANA MICIC; LO K.Y.,title = SWELLING POTENTIAL OF QUEENSTON SHALE IN LUBRICANT FLUIDS,year = 2015}