EP 2432964 A2 20120328 - Method of protecting a flexible riser and an apparatus therefor
Title (en)
Method of protecting a flexible riser and an apparatus therefor
Title (de)
Verfahren zum Schützen eines flexiblen Steigers und eine entsprechende Vorrichtung
Title (fr)
Procédé de protection d'une colonne montante flexible et appareil correspondant
Publication
Application
Priority
- EP 2010056768 W 20100518
- EP 09160763 A 20090520
- EP 10719358 A 20100518
Abstract (en)
[origin: EP2253796A1] The present invention provides a method of protecting one or more flexible risers which can carry a riser fluid, for instance a hydrocarbon production fluid such as natural gas, to or from a floating structure and an apparatus therefor, said method comprising at least the steps of: (a) providing a floating structure (100), one or more flexible risers (10), each of said flexible risers carrying a riser fluid and having a first end (20) connected to the floating structure(100) and a second end (30) on the sea bed (500) and in fluid connection with one or more riser fluid reservoirs (250); (b) closing the fluid connection between the one or more flexible risers (10) and the one or more riser fluid reservoirs (250); (c) replacing at least a portion of the riser fluid in one or more of the flexible risers (10) with a protection fluid, wherein the density of said protection fluid is greater than the density of said riser fluid.
IPC 8 full level
E21B 17/01 (2006.01); E21B 43/01 (2006.01)
CPC (source: EP KR)
E21B 7/12 (2013.01 - KR); E21B 17/015 (2013.01 - EP KR); E21B 19/004 (2013.01 - KR); E21B 43/01 (2013.01 - EP KR)
Citation (search report)
See references of WO 2010133564A2
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 SE SI SK SM TR
DOCDB simple family (publication)
EP 2253796 A1 20101124; AP 2011005957 A0 20111031; AP 3886 A 20161107; AU 2010251212 A1 20111117; AU 2010251212 B2 20131003; BR PI1012862 A2 20180227; BR PI1012862 B1 20191126; CN 102428244 A 20120425; CN 102428244 B 20141022; CY 1115428 T1 20170104; EP 2432964 A2 20120328; EP 2432964 B1 20140521; KR 101679178 B1 20161124; KR 20120030372 A 20120328; WO 2010133564 A2 20101125; WO 2010133564 A3 20110331
DOCDB simple family (application)
EP 09160763 A 20090520; AP 2011005957 A 20100518; AU 2010251212 A 20100518; BR PI1012862 A 20100518; CN 201080021719 A 20100518; CY 141100592 T 20140804; EP 10719358 A 20100518; EP 2010056768 W 20100518; KR 20117027393 A 20100518