Compositions and methods for use of proppant surface chemistry to improve proppant consolidation and flowback control
AssigneeCarbo Ceramics Inc.
InventorsChad Cannan, Thu Lieng, Daryl Johnson, Mark Conner
Life of this patent
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Abstract
Methods for hydraulically fracturing a subterranean formation to improve the production rates and ultimate recovery by contacting unconsolidated resin-coated proppant particulates residing in a propped fracture with a reactive crosslinker in order to form a consolidated proppant pack are described. Additionally, methods for use in water injection wells to consolidate the resin-coated proppant particulates in a gravel packed or frac packed region of a wellbore are also described.
Claims14
A method of hydraulic fracturing of a subterranean formation, the method comprising:
- providing, into a wellbore, a suspension comprising (i) a fracturing fluid, (ii) an emulsion of a water dispersible liquid epoxy resin, and (iii) a plurality of resin-coated proppant particulates each comprising a proppant particulate having a resin coating on its outer surface, the resin coating having active amine sites;
- mixing the fracturing fluid, the emulsion of the water dispersible liquid epoxy resin, and the plurality of resin-coated proppant particulates by flowing the fracturing fluid, the emulsion of the water dispersible liquid epoxy resin, and the plurality of resin-coated proppant particulates through the wellbore to provide a mixture;
- introducing the mixture into a fracture located in the subterranean formation;
- and
- consolidating at least a portion of the plurality of resin-coated proppant particulates in the fracture by reacting, via a consolidation reaction, the water dispersible liquid epoxy resin with the active amine sites of the resin coating of adjacent resin-coated proppant particulates in the mixture, wherein the consolidating of the portion of the resin-coated proppant particulates takes place at a temperature of 100° F. to 130° F.
A method of consolidating a plurality of resin-coated particulates in an annular region of a wellbore, the method comprising:
- providing, into a wellbore, a suspension comprising (i) a fracturing fluid, (ii) an emulsion of a water dispersible liquid epoxy resin, and (iii) a plurality of resin-coated particulates each comprising a proppant particulate having a resin coating having an active amine site on its outer surface;
- mixing the suspension by flowing the suspension through the wellbore to form a mixture;
- introducing the mixture into the annular region of the wellbore to form a gravel pack;
- and
- consolidating at least a portion of the plurality of resin-coated particulates by reacting in the annular region, via a consolidation reaction, the water dispersible liquid epoxy resin with the active amine site of the resin coating of adjacent resin-coated proppant particulates in the mixture;
- wherein the consolidating of the portion of the plurality of the resin-coated particulates takes place at a temperature of 100° F. to 130° F. and closure stress of less than 50 psi.
Dependencies are inferred from the claim text.