Patent Number: 7,709,419

Title: Method and thermodynamic inhibitors of gas hydrates in water-based fluids

Abstract: The present invention relates to an additive that inhibits formation of gas hydrates for water-based drilling fluid, the additive having at least the following constituents (weight percent): a mixture A of glycerol derivatives having 10 to 55% monoglycerol, 15 to 32% diglycerol, and 5 to 12% triglycerol; 0 to 10% of at least one carboxylic acid salt, 0 to 45% of at least one inorganic salt.

Inventors: Lugo; Rafael (Paris, FR), Dalmazzone; Christine (Versailles, FR), Audibert; Annie (Croissy sur Seine, FR)

Assignee: Institut Francais du Petrole

International Classification: C04B 33/04 (20060101)

Expiration Date: 5/04/12018