Temperature-stable corrosion inhibitor compositions and methods of use
Disclosed are compositions including one or more corrosion inhibitors, one or more solvents and one or more Log P additives. The compositions are useful as corrosion inhibitors for use in the petroleum industry wherein the compositions are stable, pumpable, and pourable at temperatures as low as −40° C. and as high as 60° C.
1. A corrosion inhibitor composition comprising:
corrosion inhibitors, solvents, and Log P additives comprising 2-methoxyethanol, propylene carbonate, propyleneglycolmethyletheracetate, propyleneglycoldiacetate and combinations thereof, wherein the composition is stable and flows at a temperature between about −50° C. to about 60° C.
2. A composition comprising:
a produced water; and
a corrosion inhibitor composition of claim 1 effective for inhibiting corrosion of a metal surface contacted with produced water;
wherein the total concentration of the corrosion inhibitor composition is about 5 ppm to 5000 ppm by weight.
3. The corrosion inhibitor composition of claim 1 , wherein the corrosion inhibitor comprises about 1 wt % to 30 wt % of the composition.
4. The corrosion inhibitor composition of claim 1 , wherein the solvent comprises about 50 wt % to 90 wt % of the composition.
5. The corrosion inhibitor composition of claim 1 , wherein the Log P additive comprises about 0.2 wt % to 30 wt % of the composition.
6. The corrosion inhibitor composition as in of claim 1 , wherein the corrosion inhibitors is about 1 wt % to 30 wt %, the solvents is about 50 wt % to 90 wt %, and the Log P additives is about 0.2 wt % to 30 wt % of the total composition.
7. The corrosion inhibitor composition of claim 1 , wherein the Log P additives has Log P value between about −1 and about 0.
8. The corrosion inhibitor composition of claim 1 , wherein the Log P additive further comprises ethylene glycol methyl ether, ethylene glycol butyl ether, ethylene glycol hexyl ether, or a mixture of two or more thereof.
9. The corrosion inhibitor composition of claim 1 , wherein the corrosion inhibitor is mercaptoethanol.