EP 3693513 B1 20211013 - STRUCTURE AND METHOD FOR DECOMMISSIONING AN OFFSHORE PLATFORM
Title (en)
STRUCTURE AND METHOD FOR DECOMMISSIONING AN OFFSHORE PLATFORM
Title (de)
STRUKTUR UND VERFAHREN ZUR AUSSERBETRIEBNAHME EINER OFFSHORE-PLATTFORM
Title (fr)
STRUCTURE ET PROCÉDÉ DE DÉMANTÈLEMENT D'UNE PLATEFORME EN MER
Publication
Application
Priority
EP 19305159 A 20190208
Abstract (en)
[origin: EP3693513A1] Structure and method for decommissioning offshore platforms presenting topsides (12) mounted on a jacket having a plurality of jacket legs. The offshore decommissioning structure comprises a jack-up-vessel (1) comprising a hull, a main deck (5), an elevating jacking device and a plurality of jack-up legs, wherein said jack-up vessel (1) is elevated on its legs above the sea level by the elevating jacking device. Furthermore, the structure comprises a carrying and skidding system for shifting the topsides (12) from the platform jacket onto the main deck (5) of the jack-up vessel (1). Besides, the method comprises the following steps: position the jack-up vessel (1) close to the platform (12); position skid beams (18) on jack-up main deck (5) relative to the platform legs; push jacket skid beams toward the jacket legs; cut the platform jacket legs below the topside (12); and shift the topsides (12) on the skid beams (18) to the jack-up main deck (5).
IPC 8 full level
E02B 17/02 (2006.01); E02B 17/00 (2006.01)
CPC (source: EP)
E02B 17/021 (2013.01); E02B 17/027 (2013.01); E02B 2017/0052 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3693513 A1 20200812; EP 3693513 B1 20211013; DK 3693513 T3 20211213; WO 2020161340 A1 20200813
DOCDB simple family (application)
EP 19305159 A 20190208; DK 19305159 T 20190208; EP 2020053210 W 20200207