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US 2015/0087562 A1Published application
Gas hydrate inhibitors and methods for making and using same
AssigneeClearwater International, LLC
InventorsOlusegun Matthew Falana, Michael Morrow, Frank G. Zamora
Life of this patent
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Abstract
Phosphate brine compositions reduce hydrate formation in flowlines under conditions conducive for hydrate formation in the absence of the phosphate, where the phosphate brines include a compatible anti-corrosion system and may include nitrate brines.
Claims22
A method for inhibiting gas hydrate formation in downhole fluids comprising:
- using a downhole fluid including:
- a base fluid comprising a phosphate brine, and
- an inhibiting amount of a corrosion system including:
- at least one compatible anti-corrosion and/or neutralization additive is selected from the group consisting of mono carboxylic acids, dicarboxylic acids, poly carboxylic acids, hydrochloric acid (HC1), hydrobromic acid (HBr), sulfuric acid, sulfonic acids, sulfinyl acids, phosphoric acid, polyphosphoric acid, and mixtures or combinations thereof,
- where the base fluid reduces or inhibits hydrocarbon gas hydrate formation under conditions conducive to hydrocarbon gas hydrate formation in the downhole fluid, and
- where the additives reduce or prevent corrosion by the base fluid.
3 more elements
A downhole fluid composition:
- a base fluid comprising a phosphate brine, and
- an inhibiting amount of a corrosion system including:
- at least one compatible anti-corrosion and/or neutralization additive is selected from the group consisting of mono carboxylic acids, dicarboxylic acids, poly carboxylic acids, hydrochloric acid (HC1), hydrobromic acid (HBr), sulfuric acid, sulfonic acids, sulfinyl acids, phosphoric acid, polyphosphoric acid, and mixtures or combinations thereof,
- where the base fluid reduces or inhibits hydrocarbon gas hydrate formation under conditions conducive to hydrocarbon gas hydrate formation in the completion fluid, and
- where the additives reduce or prevent corrosion by the base fluid.
2 more elements
Dependencies are inferred from the claim text.