CLAY INHIBITORS FOR DRILLING, FRACTURING, AND OTHER PROCEDURES

摘要

A distillation residuum bottoms composition and other alternative amine compositions are used as clay inhibitors in water-based drilling fluids and in hydraulic fracturing fluids for drilling wells and for fracturing subterranean formations, and are also used as clay inhibitors in other treatment fluids for treating wells or subterranean formations.

主权项

1. In a method of drilling a well wherein a water-based drilling fluid is circulated through a well bore as said well bore is being drilled, the improvement comprising said water-based drilling fluid including an inhibitor composition comprising:
aminoethylethanolamine (AEEA) in an amount of from about 10% to about 50% by weight of a total weight of said inhibitor composition; diethylenetriamine (DETA) in an amount of from 0% to about 70% by weight of said total weight of said inhibitor composition; triethylenetetramine (TETA) in an amount of from 0% to about 70% by weight of said total weight of said inhibitor composition; diethanolamine (DEA) in an amount of from 0% to about 50% by weight of said total weight of said inhibitor composition; and triethanolamine (TEA) in an amount of from 0% to about 50% by weight of said total weight of said inhibitor composition, wherein said DETA or said TETA, or a combination of said DETA and said TETA, is present in said inhibitor composition in an amount of at least 5% by weight of said total weight of said inhibitor composition and said DEA or said TEA, or a combination of said DEA and said TEA, is present in said inhibitor composition in an amount of at least 2% by weight of said total weight of said inhibitor composition.