Proppants coated with a resin containing a clay
AssigneeGeorgia-Pacific Chemicals LLC
InventorRichard A. Rediger
Life of this patent
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Abstract
A plurality of proppants can include a plurality of particles and a cured composite resin, a curable composite resin, or a mixture of a cured composite resin and a curable composite resin disposed on each particle of the plurality of particles. The cured composite resin, prior to being cured, and the curable composite resin can each include a phenol-formaldehyde resin and an aluminosilicate clay, e.g., halloysite. The aluminosilicate clay can include a plurality of hollow tubular structures that can have an average exterior diameter of about 20 nm to about 200 nm and an average length of about 0.25 μm to about 10 μm.
Claims20
A plurality of proppants, comprising:
- a plurality of particles;
- and
- a cured composite resin disposed on each particle of the plurality of particles, wherein the cured composite resin, prior to being cured, comprises a phenol-formaldehyde resin and an aluminosilicate clay, and wherein the aluminosilicate clay comprises a plurality of hollow tubular structures having an average exterior diameter of about 20 nm to about 200 nm and an average length of about 0.25 μm to about 10 μm.
A plurality of proppants, comprising:
- a plurality of particles;
- and
- a cured composite resin disposed on each particle of the plurality of particles, wherein:
- the cured composite resin, prior to being cured, comprises a phenol-formaldehyde resin and halloysite,
- the cured composite resin, prior to being cured, comprises the halloysite in an amount of greater than 25 wt % to about 70 wt %, based on a solids weight of the phenol-formaldehyde resin, and
- the plurality of proppants has a dry crush strength of about 0.5 wt % to less than 10 wt % at a pressure of about 82.7 MPa.
A plurality of proppants, comprising:
- a plurality of particles comprising sand;
- and
- a cured composite resin disposed on each particle of the plurality of particles, wherein:
- each particle of the plurality of particles is completely covered by a continuous layer of the cured composite resin,
- the cured composite resin, prior to being cured, comprises a phenol-formaldehyde novolac resin, halloysite, and a cross-linker,
- the plurality of proppants has an average particle size of about 180 μm to about 2 mm, and
- the plurality of proppants has a dry crush strength of about 0.5 wt % to less than 10 wt % at a pressure of about 82.7 MPa.
Dependencies are inferred from the claim text.