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US2012067831A1
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Apparatus for and method of recovering clean drilling fluid from fluid contaminated with entrained debris
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GB0719093D0
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Recovery of hydrocarbons
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GB0423021D0
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Drilling fluid screening device
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GB9916036D0
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Environmentally friendly method of disposal for oil coated drilled cuttings
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GB9911713D0
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Gas encapsulated lubricant
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GB9606168D0
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A method of bore hole drilling and casing, and equipment for use in the method
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GB9416586D0
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Bore hole flushing
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