Modified cellulose nanocrystals and their use in drilling fluids
Bentonite (or other clay) water-based drilling fluids incorporating functionalized cellulose nanocrystals are disclosed. Cellulose nanocrystals are modified with tailored surface charges or tailored levels of salt-tolerant polymer grafting, and combined with bentonite (or other clay) nanoplatelets in an aqueous suspension. Thermal performance of drilling fluids can also be enhanced by surface grafting of thermally functional polymers onto cellulose nanocrystals.
Board of Supervisors of Louisiana State University and Agricultural and Mechanical College
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Meichun Qinglin
Li Wu