GAS HYDRATE INHIBITORS AND METHODS FOR MAKING AND USING SAME

摘要

Nitrate brine compositions reduce hydrate formation in flowlines under conditions conducive for hydrate formation in the absence of the nitrate brines, where the nitrate brines include compatible anti-corrosion system.

主权项

1. A downhole fluid composition comprising:
a base fluid comprising a nitrate 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 (HCl), hydrobromic acid (HBr), sulfuric acid, sulfonic acids, sulfinyl acids, phosphoric acid, polyphosphoric acid, and mixtures or combinations thereof, where the downhole fluid comprises a drilling fluid, a completion fluid, or a production fluid, 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.