Patent Number: 6,166,095

Title: Method of preparing a drilling fluid comprising structured surfactants

Abstract: A pourable aqueous composition for use as, or for dilution to form, a drilling mud comprises a least 2% by weight of a water soluble polyvalent metal salt of an alkyl polyoxyalkylene sulphuric or carboxylic acid, and at least 1% by weight of a corresponding salt of an alkyl benzene sulphuric acid, preferably in the presence of a water soluble inorganic salt or base of said polyvalent metal.

Inventors: Bryan; Edward (Stourbridge, GB), Grover; Boyd William (Bromsgrove, GB), Nicholson; William John (Halesowen, GB)

Assignee: Albright & Wilson UK Limited

International Classification: C09K 8/22 (20060101); C09K 8/02 (20060101); B01F 017/00 ()

Expiration Date: 12/26/2017