Absorbent materials and production thereof
AssigneeScotoil Group PLC
InventorIan David Farquhar Davidson
Life of this patent
Estimating the term…
Abstract
A process for recovering clay from contaminated clay-containing waste materials e.g. drill-cuttings arising from offshore/onshore oil & gas exploration and production processes, comprises a cleaning step to generate a clay of sufficient purity for reuse, and a particle sizing step to obtain a substantially consistent quality clay product optionally in the form of bulk particles or shaped to provide conveniently transportable product forms including granules, pellets, prills, packing elements, briquettes and the like shaped articles.
Claims13
A process for recovering clay from contaminated clay-containing waste materials arising from offshore/onshore processes, comprising a cleaning step to generate a clay of sufficient purity for reuse, and a particle sizing step to obtain a substantially consistent quality clay product optionally in the form of bulk particles or shaped to provide conveniently transportable product forms including granules, pellets, prills, packing elements, briquettes and the like shaped articles.
A process for recovering clay from clay-containing drill-cuttings, comprising,
- subjecting the clay-containing drill cuttings to treatment to remove oil and oil related contaminants therefrom, said treatment including the combined steps of solvent washings, physical separations and drying stages to recover the clay in a dried form and a level of purity sufficient to permit it to be processed as a substantially non-hazardous material;
- and optionally
- blending the recovered clay with an additive selected from clays recovered from alternative sources, said alternative sources including at least one of wood chippings, paper, porous rock and minerals, and other auxiliaries suitable for processing or forming absorbent materials;
- and
- comminuting the recovered clay, or a mixture of the blended clay and additive to provide a comminuted material suitable for subsequent processing.
The use of recovered clay extracted from drill cuttings in at least one of manufacture of a cat litter and production of an absorbent product.
Dependencies are inferred from the claim text.