EP 3392452 B1 20240131 - A METHOD OF MAKING SAFE AN UNDERSEA BOTTOM-TO-SURFACE PRODUCTION PIPE WHEN PRODUCTION IS STOPPED
Title (en)
A METHOD OF MAKING SAFE AN UNDERSEA BOTTOM-TO-SURFACE PRODUCTION PIPE WHEN PRODUCTION IS STOPPED
Title (de)
SICHERUNGSVERFAHREN EINER UNTERWASSERLEITUNG ZUR VERBINDUNG VON MEEERESBODEN UND OBERFLÄCHE BEIM ABSCHALTEN DER PRODUKTION
Title (fr)
PROCÉDÉ DE MISE EN SÉCURITÉ D'UNE CONDUITE SOUS-MARINE DE PRODUCTION DE LIAISON FOND-SURFACE A L'ARRÊT DE LA PRODUCTION
Publication
Application
Priority
FR 1753325 A 20170418
Abstract (en)
[origin: US2018298712A1] Method of stopping production and making safe an undersea bottom-to-surface connection production pipe having a first pipe portion on the sea bottom from a well head to the bottom end of a second pipe portion extending to a ship or floating support. After stopping production, depressurization of the entire undersea bottom-to-surface connection production pipe is performed. Thereafter, the following steps are preformed: isolating the first production pipe portion from the second pipe portion, and leaving the production fluid in the first production pipe portion, but not in said second pipe portion, depressurizing the first production pipe portion filled with production fluid by reducing the pressure in the first pipe portion and by discharging more completely the gas contained in the production fluid that it contains.
IPC 8 full level
E21B 41/00 (2006.01); E21B 43/01 (2006.01)
CPC (source: BR EP US)
E21B 33/037 (2013.01 - US); E21B 33/038 (2013.01 - BR EP US); E21B 41/0007 (2013.01 - BR EP US); E21B 43/01 (2013.01 - EP US); E21B 43/013 (2013.01 - BR US)
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 3392452 A1 20181024; EP 3392452 B1 20240131; BR 102018007690 A2 20181106; FR 3065251 A1 20181019; FR 3065251 B1 20190628; US 10989009 B2 20210427; US 11634960 B2 20230425; US 2018298712 A1 20181018; US 2021164312 A1 20210603
DOCDB simple family (application)
EP 18164457 A 20180328; BR 102018007690 A 20180417; FR 1753325 A 20170418; US 201815956104 A 20180418; US 202117171816 A 20210209