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US 7,028,776 B2Granted
Methods for the inhibition of salt blockages in oil and gas wells
AssigneeBJ Services Company
InventorJoseph W. Kirk
Life of this patent
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Abstract
Compositions and methods for the inhibition of salt formation in oil and gas wells are disclosed. In particular, nitrilotriacetamide and its salts are effective at treating existing salt formations, and in inhibiting formation of new deposits.
Claims14
A method of reducing the amount of crystallized salt in an oil and/or gas well, the method comprising:
- selecting an oil and/or gas well containing crystallized salt;
- providing a fluid comprising water and a salt inhibitor selected from the group consisting of nitrilotriacetamide and a nitrilotriacetamide salt;
- and
- pumping the fluid into the well;
- wherein the amount of crystallized salt is reduced.
2 more elements
A method of reducing the amount of crystallized salt in an oil and/or gas well, the method comprising:
- selecting an oil and/or gas well containing crystallized salt;
- providing a fluid comprising water, a salt inhibitor selected from the group consisting of nitrilotriacetamide and a nitrilotriacetamide salt, and a foaming agent selected from the group consisting of nonyl phenol ethoxylates, sulfamic acid derivatives of ethoxylated alcohols, ammonium dodecylbenzenesulfonate, and potassium dodecylbenzenesulfonate;
- and
- pumping the fluid into the well;
- wherein the amount of crystallized salt is reduced.
2 more elements
Dependencies are inferred from the claim text.