Coated plastic beads and methods of using same to treat a wellbore or subterranean formation
First Claim
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1. A coated plastic bead for treating a wellbore, wherein the coated plastic bead comprises a plastic bead and a curable resin coating and further wherein, when formulated into a pack, exhibits greater conductivity and permeability at a closure stress greater than or equal to 41 psi than a substantially similar plastic bead not containing the curable resin, when formulated into a pack.
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Accused Products
Abstract
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 1.5.
59 Citations
34 Claims
- 1. A coated plastic bead for treating a wellbore, wherein the coated plastic bead comprises a plastic bead and a curable resin coating and further wherein, when formulated into a pack, exhibits greater conductivity and permeability at a closure stress greater than or equal to 41 psi than a substantially similar plastic bead not containing the curable resin, when formulated into a pack.
- 30. A method of treating a subterranean formation penetrated by a wellbore by introducing into the formation coated plastic beads comprising plastic beads and a curable resin coating wherein the thickness of the curable resin coating on the plastic beads is between from about 0.5 to about 4 microns and further wherein the propensity of flowback of the coated plastic beads during treatment of the well is diminished by the presence of the curable resin coating on the plastic beads.
Specification