Polymer drilling bead recovery system and related methods

Classifying – separating – and assorting solids – Plural – diverse separating operations – Aqueous suspension and sifting

Reexamination Certificate

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C209S173000, C209S317000

Reexamination Certificate

active

06892887

ABSTRACT:
A polymer bead recovery apparatus is provided comprising: a housing comprising a recovery tank having an internal cavity and an exterior surface, the recovery tank having at least one inlet and at least one outlet, the recovery apparatus having a least one circulation system for creating a force within the internal cavity of the recovery tank, the housing further comprising a walkway situated on the exterior surface of said recovery tank, the recovery tank comprising a shaker deck having a plurality of interchangeable screens and the walkway providing access to said screens, and wherein a mixture of solid particulate material, drilling fluids, polymer beads and drilled solids are separated by a first screen of the shaker deck and the remaining mixture of small materials, fluids and beads enters the recovery tank and are separated by the force created by the circulation system, the undesired small particulate materials are removed from the recovery tank and then separated and isolated by a second screen of the shaker deck and then the polymer beads are isolated and then recovered and collected.

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