Salting out inhibitors for use in treatment fluids
Methods and system for using salting out inhibitors in subterranean formations are provided. In some embodiments, the methods comprise introducing a treatment fluid comprising an aqueous base fluid, a salting out inhibitor, a gelling agent, and one or more salts into at least a portion of a subterranean formation, wherein the salting out inhibitor is selected from the group consisting of: an oligomer comprising one or more quaternary ammonium cations, a polymer comprising one or more quaternary ammonium cations, a source of one or more phosphate anions, and any combination thereof.
1. A method comprising:
introducing a treatment fluid comprising an aqueous base fluid, a salting out inhibitor, a gelling agent, and one or more salts into at least a portion of a subterranean formation, wherein the salting out inhibitor is selected from the group consisting of: an oligomer comprising one or more quaternary ammonium cations, a polymer comprising one or more quaternary ammonium cations, a source of one or more phosphate anions, and any combination thereof, and wherein the gelling agent is a polysaccharide gelling agent.
2. The method of claim 1 , wherein the treatment fluid comprises a gravel material.
3. The method of claim 2 , further comprising allowing the gravel material to form at least a portion of a gravel pack in at least the portion of the subterranean formation.
4. The method of claim 1 , wherein the treatment fluid is introduced at a pressure sufficient to create or enhance one or more fractures within the subterranean formation.
5. The method of claim 1 , wherein the polysaccharide gelling agent is selected from group consisting of: xanthan, scleroglucan, diutan, succinoglycan, guar, hydroxyethyl cellulose, a derivative of the foregoing, and any combination thereof.
6. The method of claim 1 , wherein the one or more salts are present in the treatment fluid in an amount of from about 8.5 lb/gal to about 14.5 lb/gal.
7. The method of claim 1 , wherein the one or more salts are selected from the group consisting of: an alkali metal halide salt, an alkaline earth metal halide salt, and any combination thereof.
8. The method of claim 1 , wherein the treatment fluid has an apparent viscosity of about 100 cP or less at a shear rate of 100 sec −1 and a temperature of about 250° F.
9. The method of claim 1 , wherein the salting out inhibitor comprises a quaternary ammonium salt.
10. The method of claim 1 , wherein the salting out inhibitor comprises a polyquaternium compound.
11. The method of claim 1 , wherein the salting out inhibitor comprises an ester of phosphonic acid.
12. A system comprising:
a treatment fluid comprising an aqueous base fluid, a salting out inhibitor, a gelling agent, one or more salts, and a gravel material, wherein the salting out inhibitor is selected from the group consisting of: an oligomer comprising one or more quaternary ammonium cations, a polymer comprising one or more quaternary ammonium cations, a source of one or more phosphate anions, and any combination thereof, and wherein the gelling agent is a polysaccharide gelling agent;
a production tubing;
a screen coupled to the production tubing; and
a pumping system fluidically coupled to the production tubing, wherein the pumping system is capable of pumping the gravel packing fluid through the production tubing.
13. The system of claim 12 , wherein the one or more salts are present in the treatment fluid in an amount of from about 8.5 lb/gal to about 14.5 lb/gal.
14. A method comprising:
forming a treatment fluid comprising an aqueous base fluid, a salting out inhibitor, a gelling agent, and one or more salts, wherein forming the treatment fluid comprises:
providing a first fluid comprising the aqueous base fluid, the gelling agent, and the salting out inhibitor, wherein the salting out inhibitor is selected from the group consisting of: an oligomer comprising one or more quaternary ammonium cations, a polymer comprising one or more quaternary ammonium cations, a source of one or more phosphate anions, and any combination thereof, and
adding the one or more salts to the first fluid; and
placing the treatment fluid into at least a portion of a subterranean formation.
15. The method of claim 14 , wherein forming the treatment fluid comprises adding a gravel material to the first fluid.
16. The method of claim 15 , further comprising allowing the gravel material to form a gravel pack in at least the portion of the subterranean formation.
17. The method of claim 14 , wherein the gelling agent is selected from group consisting of: xanthan, scleroglucan, diutan, succinoglycan, guar, hydroxyethyl cellulose, a derivative of the foregoing, and any combination thereof.
18. The method of claim 14 , wherein the one or more salts are present in the treatment fluid in an amount of from about 8.5 lb/gal to about 14.5 lb/gal.