Patents by Inventor Vibjørn Dagestad

Vibjørn Dagestad has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190186213
    Abstract: The present invention relates to an offshore coiled tubing system for running a coiled tubing into a subsea well offshore, comprising a well comprising a well tubular metal structure having a top and an inner face, a blowout preventer (BOP) arranged in the top of the well tubular metal structure, and a sluice having a top part for entry of coiled tubing, the BOP being arranged between the well tubular metal structure and the sluice, the sluice having a sealing unit arranged in the top part of the sluice for sealing around the coiled tubing, a vessel comprising a deck, a coiled tubing reel comprising coiled tubing, the coiled tubing having a first end, and a first driving unit for assisting in driving the coiled tubing into/from the well, the first driving unit being configured to be movable in relation to the deck to compensate for heave motion of the vessel, and a second driving unit for assisting in driving the coiled tubing into/from the well, wherein the second driving unit is movable in relation to the B
    Type: Application
    Filed: December 18, 2018
    Publication date: June 20, 2019
    Inventor: Vibjørn DAGESTAD
  • Patent number: 8534714
    Abstract: A coupling device for connection and disconnection of bottomhole equipment includes a male part having a stinger with locking grooves and a female part includes a receptacle and a housing. The female part further includes a hold open sleeve below the receptacle, locking dogs arrange between the housing and the hold open sleeve, a locking sleeve arranged below the locking dogs, and a verifying bolt. By joining the male and female parts, the coupling device will lock automatically, as the hold open sleeve is pushed into the locking sleeve by the stinger, after which the locking dogs are pushed into the grooves of the stinger, after which the locking sleeve is pushed up over the locking dogs locking the locking dogs, after which the verifying bolt once the locking sleeve is in locking position will be pushed into an adapted opening in the locking sleeve, thereby verifying correct locking.
    Type: Grant
    Filed: July 4, 2007
    Date of Patent: September 17, 2013
    Assignee: Statoilhydro ASA
    Inventors: Alastair Buchanan, Kjell Tore Nesvik, Vibjørn Dagestad
  • Publication number: 20090280912
    Abstract: Coupling device (1) for connection and disconnection of bottomhole equipment, comprising; a male part (2) having a conically shaped stinger (3) with locking grooves (4), which male part is arranged at the end of a coiled tubing; and a female part (5) comprising a receptacle (7) in an upper end (6) and a house (8) that constitutes the outer part of the female part from the receptacle to a lower end (9), which receptacle has conical shape adapted to receive the stinger of the male part, distinguished in that the female part further comprises: a hold open sleeve (10) within the house towards the upper end, adjacent and below the receptacle, which hold open sleeve is axially displaceable in the house in direction towards the lower end and has an internal diameter smaller than the receptacle; locking dogs (11) with a biasing device (12) pushing the locking dogs radially inwards, which locking dogs are arranged between the house and the hold open sleeve; a locking sleeve (13) with a biasing device (14) pushing the
    Type: Application
    Filed: July 4, 2007
    Publication date: November 12, 2009
    Applicant: Statoil ASA
    Inventors: Alastair Buchanan, Kjell Tore Nesvik, Vibjørn Dagestad