Inhibiting corrosion in gas wells
A composition for inhibiting corrosion in hydrocarbon wells includes a pyranopyrazole derivative. The pyranopyrazole derivative includes a pyrazole moiety, a dihydropyran moiety, and a phenyl moiety. The dihydropyran moiety is bound to the pyrazole moiety. The phenyl moiety is bound to the dihydropyran moiety. The composition can be flowed into a wellbore formed in a subterranean formation, thereby inhibiting corrosion in the wellbore.
1. A composition for inhibiting corrosion in hydrocarbon wells, the composition comprising:
a pyranopyrazole derivative comprising:
a pyrazole moiety;
a dihydropyran moiety bound to the pyrazole moiety, the dihydropyran moiety comprising an R 2 group selected from the group consisting of a nitrile group, a thiol group, a carboxyl group, an aromatic carbonyl group, a hydroxyl group, a methyl amino group, an amide group, and an ester group, the dihydropyran moiety comprising an R 3 group selected from the group consisting of an amide group, an amino group, a thiol group, a hydroxyl group, an ester group, and a carboxyl group, wherein the R 2 group and the R 3 group are the same; and
a phenyl moiety bound to the dihydropyran moiety.
2. The composition of claim 1 , wherein the pyranopyrazole derivative has a concentration in the composition in a range of from 100 parts per million (ppm) to 10,000 ppm.
3. The composition of claim 2 , wherein the phenyl moiety comprises an R 1 group selected from the group consisting of a methoxy group, a carboxyl group, an aromatic amide group, a thiol group, a nitrile group, an azo group, a pyridyl group, a bromophenyl group, and a sulfonic acid group.
4. The composition of claim 3 , wherein the R 1 group comprises methoxy, mercapto, pyridyl, (bromomethyl)pyridyl, or pyridine-2-aldoxime.
5. The composition of claim 4 , wherein the pyrazole moiety comprises an R 4 group comprising an alkyl group with a carbon chain having a number of carbon atoms in a range of from 1 to 18.