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US 2016/0108306 A1Published application
Latent Curing Agent Compatible with Low pH Frac Fluids
AssigneeHalliburton Energy Services, Inc.
InventorsJim D. WEAVER, Philip D. NGUYEN, Dipti SINGH
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Abstract
A method of treating a subterranean formation including providing a treatment fluid comprising a hardenable acid curable resin and a hydrolysable strong acid ester. The treatment fluid is combined with a diluent fluid and is introduced into a subterranean formation. Upon the hydrolyzing of the ester in the formation and the contacting of unconsolidated proppants, the treatment method produces consolidated proppants.
Claims25
A method of treating a wellbore in a subterranean formation comprising:
- providing a first fluid comprising a hardenable acid curable resin and a hydrolysable strong acid ester, wherein said ester upon hydrolyzing yields an acid with a pKa at or below about 3;
- providing a diluent fluid;
- placing a first stream comprising the first fluid and the diluent fluid into a zone in the subterranean formation, said zone comprising unconsolidated particulates;
- hydrolyzing at least a portion of said ester in said formation;
- and
- forming consolidated particulates upon the contacting of the unconsolidated particles with the reaction product of the hardenable acid curable resin and hydrolysable strong acid ester upon hydrolyzing in the formation.
3 more elements
A method comprising:
- placing a first stream comprising a hardenable acid curing resin and a hydrolysable strong acid ester into a wellbore in a subterranean formation, said formation comprising unconsolidated particulates, wherein said ester upon hydrolyzing yields an acid with a pKa at or below about 3;
- and
- forming consolidated particulates upon the contacting of the unconsolidated particles with the reaction product of the hardenable acid curing resin, hydrolysable strong acid ester, and water in the formation.
A method comprising:
- providing a wellbore in a subterranean formation;
- providing a first fluid comprising a hardenable acid curing resin and a hydrolysable strong acid ester, wherein said ester upon hydrolyzing yields an acid with a pKa at or below about 3;
- providing proppant particulates;
- coating the proppant particulates with the first fluid;
- providing a second stream comprising a diluent fluid;
- creating at least one fracture in said subterranean formation;
- placing a first stream comprising the coated proppant particulates and the second stream into the subterranean formation and into at least one fracture therein;
- wherein the proppant particulates form a proppant pack in the at least one fracture;
- and
- forming consolidated proppant particulates upon the curing of the coated proppant particulates in the proppant pack upon hydrolyzing of at least a portion of said strong acid ester.
7 more elements
A well treatment system comprising:
- a well treatment apparatus configured to:
- place a first stream comprising a hardenable acid curing resin and a hydrolysable strong acid ester into a wellbore in a subterranean formation, said formation comprising unconsolidated particulates, wherein said ester upon hydrolyzing yields an acid with a pKa at or below about 3;
- and
- form consolidated particulates upon the contacting of the unconsolidated particles with the reaction product of the hardenable acid curing resin, hydrolysable strong acid ester, and water in the formation.
1 more element
Dependencies are inferred from the claim text.