ATBECHDEDKESFRGBGRITLILUNLSEMCPTIESILTLVFIROMKCYALTRBGCZEEHUPLSKBAHRIS..MTNORSMESM..................JJDIM360 Ver 1.28 (29 Oct 2014) - 1620000/02799716EUROPEAN PATENT APPLICATIONA320150520EP14001520.72014043020140430enenen2013060420130430NO2015052020152120141105201445F04D 25/06 20060101AFI20150413BHEP F04D 27/02 20060101ALI20150413BHEP deVerfahren und System zur Abflussflüssigkeitssammlung und -entleerung in einem Unterwasser-VerdichtungssystemenA method and a system for drain liquid collection and evacution in a subsea compression systemfrProcédé et système de collecte et d'évacuation de liquide de drain dans un système de compression sous-marine1Vetco Gray Scandinavia AS101092576B2013003 EPP.O. Box 4231302 SandvikaNOStrand, RuneVillaveien 20N-3430 SpikkestadNOBongini, FrancescoVia Iacopo Nardi 4650132 FlorenceITALATBEBGCHCYCZDEDKEEESFIFRGBGRHRHUIEISITLILTLULVMCMKMTNLNOPLPTRORSSESISKSMTRBAME20150520201521

A system and a method for drain liquid collection and evacuation in a subsea compression system using a compressor (1) is disclosed, wherein an external drainage tank (10) is arranged in direct flow communication with the compressor sump via a sump evacuation valve (12). The drainage tank can be set under compressor discharge pressure (17, 18) via a tank pressurizing line (18) arranged to connect the drainage tank to a compressor discharge flow (7) upstream of a throttle valve (21), and a tank evacuation line (20) is arranged to connect the drainage tank to the compressor discharge flow (7) downstream of the throttle valve (21). Drain liquid evacuation is accomplished through generation, by adjusting the throttle valve (21), of a flow restriction in the compressor discharge flow (7) while setting the drainage tank under compressor discharge pressure by opening of the pressure valve (17) and permitting drain liquid flow into a reduced compressor discharge pressure downstream the throttle valve (21) by opening an evacuation valve (19) in the evacuation line (20).

B2013003 EPEP14001520.7Vetco Gray Scandinavia AS1MN20150417F04DEP2233745A1SIEMENS AG [DE]20100929X1-10* paragraphs [0001], [0021], [0022]; figure 1 *WO2011008103A1FMC KONGSBERG SUBSEA AS [NO]; BAGGERUD ERIK [NO]; TOENNESEN LEIF ARNE20110120X1,6-10* page 1, lines 1,2; figures 5,6 ** page 6, line 17 - page 7, line 13 *WO2012164382A1VETCO GRAY SCANDINAVIA AS [NO]; TOMTER OLE PETTER [NO]; WESSEL JOERGEN20121206A1,8* page 1, paragraph 1; figure 3 ** page 6, paragraph 6 - page 7, paragraph 1 *de Martino, MarcelloMunich20150409EP2233745A120100929CN102348899A20120208EP2233745A120100929EP2406499A120120118RU2011140881A20130420US2012055335A120120308WO2010102905A120100916WO2011008103A120110120NO331265B120111114WO2011008103A120110120WO2012164382A120121206AU2012264387A120131212CN103732857A20140416EP2715062A120140409NO335032B120140825US2014223894A120140814WO2012164382A120121206