COATED PROPPANTS CONTAINING HYPERBRANCHED POLYURETHANE COATINGS AND METHODS FOR USING SAME

摘要

Coated proppants that include hyperbranched polyurethane coatings and methods for making and using same. The coated proppant can include a particle and a polyurethane coating at least partially encasing the particle. The polyurethane coating can include a reaction product of a hyperbranched polyol and a polyisocyanate. The hyperbranched polyol can include a reaction product of a chain extender and a polyol monomer. The coated proppant can have a dry crush strength of about 0.1 wt% to about 5 wt% at a pressure of about 96.5 MPa, based on the Proppant Crush Resistance Test Procedure under ISO 13503-2:2011.