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Title:
PLUG AND ABANDONMENT OF ONE OR MORE OFFSHORE PLATFORM WELLBORES OF AN OFFSHORE PLATFORM USING A MARINE JACK-UP TYPE VESSEL
Document Type and Number:
WIPO Patent Application WO/2019/066653
Kind Code:
A3
Abstract:
A method for permanent plug and abandonment of one or more offshore platform wellbores of an offshore platform and for decommissioning of said offshore platform, wherein said platform has a jacket and a topsides. Use is made of a marine jack-up type vessel. The method comprises: - arranging the vessel adjacent the offshore platform bringing the vessel in an operational position wherein the cantilever is movable in an extended position above the topsides of the offshore platform, - moving the cantilever into said extended position above the topsides and aligning the wellbore activities station with a wellbore, - performing a plug and abandonment operation involving the use of the wellbore activities station, - retracting the cantilever, - disconnecting the topsides from the jacket, - lifting the topsides from the jacket and placing said topsides on board the vessel, - operating the elevating units so as to lower the hull of the vessel into the sea and to retract the jack-up legs upward.

Inventors:
ROODENBURG, Joop (Admiraal Trompstraat, 3115 HH Schiedam, NL)
WIJNING, Diederick Bernardus (Admiraal Trompstraat, 3115 HH Schiedam, NL)
Application Number:
NL2018/050641
Publication Date:
June 06, 2019
Filing Date:
September 27, 2018
Export Citation:
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Assignee:
ITREC B.V. (2 Admiraal Trompstraat, 3115 HH Schiedam, 3115 HH Schiedam, NL)
International Classes:
E02B17/02; E02B17/00; E21B15/00; E21B15/02
Domestic Patent References:
WO2012144952A12012-10-26
WO2017142938A12017-08-24
Foreign References:
US4269542A1981-05-26
Attorney, Agent or Firm:
DE GRAVE-WOLTERINK, Ir. I.J.C.M.E. (EP&C, P.O. Box 3241, 2280 GE RIJSWIJK, NL)
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