Patent ID: 8926220
Filing Date: 2015-01-06
Classification: B09B,C02F

Abstract:
1. A process for thickening an aqueous drilling mud waste materials comprising: mixing an aqueous drilling mud waste materials having from greater than zero percent by weight free liquid to ninety nine percent by weight free liquid with an effective amount of at least one anionic copolymer to form a treated drilling mud waste materials, wherein said anionic copolymer is derived from the copolymerization of an anionic monomer and a nonionic monomer, and a cross-linking monomer that is selected from the group consisting of N,N′-methylenebisacrylamide, N-(1-hydroxy-2,2-dimethyloxyethyl)acrylamide, a diamine, and a silicate, and combinations thereof; and providing an effective amount of time period sufficient for said treated drilling mud waste materials to thicken for eliminating said free liquid, and subjecting said treated drilling mud waste materials to a Paint Filter Liquids Test Method 9095B protocol to confirm achieving one hundred percent elimination of free liquid, and optionally transporting said thickened treated drilling mud waste materials to a landfill for disposal.