Wear-resistant and self-lubricant bore receptacle packoff tool

    公开(公告)号:US09840887B2

    公开(公告)日:2017-12-12

    申请号:US14710674

    申请日:2015-05-13

    IPC分类号: E21B33/12

    CPC分类号: E21B33/1212 E21B33/1208

    摘要: A packoff assembly comprises: a tubing connectable mandrel; and at least one packoff element disposed on the mandrel; the packoff element comprising an annular seal comprising a carbon composite and having an inner surface and an opposing outer surface; the inner surface being in contact with a surface of the mandrel; a wear-resistant member at least partially encapsulating the seal; an annular guide member disposed on the mandrel; and a retainer member disposed between the guide member and the mandrel for securing the guide member to a predetermined position on the mandrel.