Cationic and anionic shale inhibitors and clay stabilizers

A method of fracture stimulation comprising:

• introducing a treatment fluid into a wellbore penetrating at least a portion of a subterranean formation that comprises clay at or above a pressure sufficient to create or enhance one or more fractures in the subterranean formation, wherein the treatment fluid comprises:
• a base fluid;
• proppant;
• an anionic friction reducer;
• and
• an additive comprising a salt, a cationic clay stabilizer, and an anionic clay stabilizer,
• wherein the cationic clay stabilizer is selected from the group consisting of:
• polydiallyldimethylammonium chloride;
• a cationic polyamine;
• a quaternary ammonium salt;
• and any combination thereof;
• wherein the anionic clay stabilizer is selected from the group consisting of:
• polyacrylamide polymer, copolymer, or terpolymer;
• polyacrylic acid;
• polyacrylamide copolymer;
• a block copolymer of polyacrylamide and 2-acrylamido-2-methylpropane sulfonic acid (AMPS);
• 2-acrylamido-tertbutylsulfonic acid (ATBS);
• poly(acrylamide-co-acrylic acid);
• and any combination thereof;
• wherein the salt is selected from the group consisting of:
• calcium chloride, sodium chloride, potassium chloride, calcium bromine, ammonium chloride, ammonium nitrate, sodium acetate, and any combination thereof;
• wherein the cationic shale inhibitor is present in the additive in an amount of about 2% to about 5% by weight of the additive;
• and
• allowing the additive to interact with the clay in the subterranean formation to at least partially inhibit the clay.

A method of fracture stimulation comprising:

• introducing an additive comprising a salt, a cationic shale inhibitor, and an anionic shale inhibitor into a treatment fluid, wherein the cationic shale inhibitor is present in the additive at a ratio of about 1:2 to about 1:5 by volume of the anionic shale inhibitor,
• wherein the cationic shale inhibitor is selected from the group consisting of:
• polydiallyldimethylammonium chloride;
• a cationic polyamine;
• a quaternary ammonium salt;
• and any combination thereof;
• wherein the anionic shale inhibitor is selected from the group consisting of:
• polyacrylamide polymer, copolymer, or terpolymer;
• polyacrylic acid;
• polyacrylamide copolymer;
• a block copolymer of polyacrylamide and 2-acrylamido-2-methylpropane sulfonic acid (AMPS);
• 2-acrylamido-tertbutyl sulfonic acid (ATBS);
• poly(acrylamide-co-acrylic acid);
• and any combination thereof;
• wherein the salt is selected from the group consisting of:
• calcium chloride, sodium chloride, potassium chloride, calcium bromine, ammonium chloride, ammonium nitrate, sodium acetate, and any combination thereof;
• wherein the cationic shale inhibitor is present in the additive in an amount of about 2% to about 5% by weight of the additive;
• introducing the treatment fluid into a wellbore penetrating at least a portion of a subterranean formation that comprises shale at or above a pressure sufficient to create or enhance one or more fractures in the subterranean formation;
• and
• allowing the additive to interact with the shale in the subterranean formation having a temperature of 150° F. or higher to at least partially inhibit the shale.