Patent ID: 6709216
Filing Date: 2004-03-23
Classification: B63B,B65G

Abstract:
A system for environmentally safe disposal of oil contaminated drill cuttings from an oil rig assembly comprising:screening said oil contaminated drill cuttings from an oil rig assembly to separate a substantial proportion of oil from said oil contaminated drill cuttings to provide a separated drill cuttings/oil residue mixture; pneumatically conveying the separated drill cuttings/oil residue mixture into an enclosed, transportable storage vessel having a lower conical section structured to achieve mass flow of the mixture in said vessel; storing the separated drill cuttings/oil residue mixture in the storage vessel; transporting the storage vessel with the separated drill cuttings/oil residue mixture therein to a destination; withdrawing the separated drill cuttings/oil residue mixture from the storage vessel at the destination by applying a compressed gas to the separated drill cuttings/oil residue mixture in the storage vessel whereby the separated drill cuttings/oil residue mixture flows out of the storage vessel by positive pressure through an outlet to empty the mixture from the vessel; and disposing of said screened separated drill cuttings/oil residue mixture.