Plastic beads, including polyamides and polystyrene beads crosslinked with divinylbenzene, having a curable resin coating are highly useful for sand control and/or hydraulic fracturing of subterranean. The curable resin coated plastic beads preferably have an apparent specific gravity less than about...http://www.google.es/patents/US7494711?utm_source=gb-gplus-sharePatente US7494711 - Coated plastic beads and methods of using same to treat a wellbore or subterranean formation
Coated plastic beads and methods of using same to treat a wellbore or ...
