E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 21/06 (2006.01)
Patent
CA 2308528
A method and apparatus for removing drill cuttings from an oil and gas well drilling platform provides for the separation of drill cuttings from at least a volume of the well drilling fluid (i.e. drilling mud) on the drilling platform so that the drilling fluids can be recycled into the well bore. The cuttings are then transferred to a cuttings collection receptacle (eg. trough) on the platform. The separated drill cuttings are then suctioned with a first suction line having an intake portion. The suctioned drill cuttings are transmitted to a processing tank (or multiple such tanks) on the platform, each having a tank interior. A vacuum is formed within the processing tank interior with a blower that is in fluid communication with the tank interior via a second vacuum line. The tank is connected to a floating work boat with a discharge flow line. Cuttings are processed within the tank, being chopped or cut into smaller size particles with a pump that is preferably contained within the processing tank. Cuttings are slurrified or liquefied in the processing tank, then transmitted from the tank to the work boat via the flow line. Multiple holding tanks can be positioned on the drilling platform for storage of cuttings until a work boat arrives. The work boat can be provided with one or more high capacity work boat holding tanks (for example 100-1000 barrels) for receiving cuttings from the multiple holding tanks on the drilling platform when disposal is desired.
Finlayson & Singlehurst
M-I L.l.c.
LandOfFree
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