E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 21/02 (2006.01) E21B 33/12 (2006.01)
Patent
CA 2467358
A packing assembly for use with a rotary drilling swivel having a cylindrical wash pipe comprising a housing assembly including a packing gland forming a sealing assembly chamber around the wash pipe, the packing gland including an injection port in open communication with the chamber, a sealing assembly disposed in the chamber and including a first annular seal ring surrounding and in sealing engagement with the wash pipe, an annular containment member disposed in the chamber in surrounding relation to the wash pipe and axially spaced from the first seal ring and an injectable packing composition in sealing engagement with the wash pipe and disposed between the first seal ring and the containment member, one of the wash pipe and the packing assembly being rotatable relative to the other. Also disclosed is a sealing assembly for use with a pump having a rotary shaft, sealing between the shaft and a stuffing box being accomplished by the use of lip type seals and an injectable packing.
Finlayson & Singlehurst
Utex Industries Inc.
LandOfFree
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