E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 21/06 (2006.01) E21B 43/34 (2006.01)
Patent
CA 2299951
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 area 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 vacuum holding tank or multiple tanks on the platform, each having a tank interior. A vacuum is formed within the holding tank interior with a blower that is in fluid communication with the tank interior via a second vacuum line. The holding tank is then connected to a floating work boat with a discharge flow line. Cuttings are then transmitted from the tank on the platform to the work boat via the flow line. In an alternate embodiment, cuttings can be transferred to an underwater storage area. In this fashion, multiple holding tanks on the drilling platform can be used to store cuttings until a work boat arrives. The work boat can be provided with its own high capacity work boat holding tank (for example 100-1000 barrels) for receiving cuttings from the multiple tanks on the drilling platform when disposal is desired. The underwater storage tank can be used in place of or as a supplement to the work boat holding tanks.
Finlayson & Singlehurst
M-I L.l.c.
LandOfFree
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