Drainage for a telescope section of a landing string

    公开(公告)号:US10138703B2

    公开(公告)日:2018-11-27

    申请号:US15519906

    申请日:2015-10-20

    申请人: WellPartner AS

    发明人: Kenneth Skinnes

    摘要: A drainage device is for a tubular, telescopic pipe-landing unit having a through pipe bore partially formed of a center pipe extending from an upper end portion of an outer pipe-landing section and with a free end in through an upper end portion of an inner pipe-landing section, which is axially movable in the outer pipe-landing section. The center pipe has a fluid-communication opening arranged for pressure equalization between the pipe bore and an annulus between the center pipe and the outer pipe-landing section. The annulus has a drain passage arranged to be opened by the axial movement of the inner pipe-landing section into the outer pipe-landing section away from an extended, operative position, in which an abutment portion on the upper end portion of the inner pipe-landing section is resting sealingly against a seat portion on a lower end portion of the outer pipe-landing section.

    Drainage for a Telescope Section of a Landing String

    公开(公告)号:US20170247976A1

    公开(公告)日:2017-08-31

    申请号:US15519906

    申请日:2015-10-20

    申请人: WellPartner AS

    发明人: Kenneth Skinnes

    摘要: A drainage device is for a tubular, telescopic pipe-landing unit having a through pipe bore partially formed of a center pipe extending from an upper end portion of an outer pipe-landing section and with a free end in through an upper end portion of an inner pipe-landing section, which is axially movable in the outer pipe-landing section. The center pipe has a fluid-communication opening arranged for pressure equalization between the pipe bore and an annulus between the center pipe and the outer pipe-landing section. The annulus has a drain passage arranged to be opened by the axial movement of the inner pipe-landing section into the outer pipe-landing section away from an extended, operative position, in which an abutment portion on the upper end portion of the inner pipe-landing section is resting sealingly against a seat portion on a lower end portion of the outer pipe-landing section.