- Category: Production
Specialty Oilfield Solutions, Ltd.
Products: Specialty oilfield products, drilling fluids, solids control equipment and services.
Founded in 2005, Houston-based SOS is a full-service solids control and drilling fluids company with operations in the Marcellus, Eagle Ford and Utica shale plays. SOS will operate as a subsidiary of Anchor Drilling Fluids, which is wholly-owned by Calumet.