ATBECHDEDKESFRGBGRITLILUNLSEMCPTIESILTLVFIROMKCYALTRBGCZEEHUPLSKBAHRIS..MTNORSMESM..................JJDIM360 Ver 1.28 (29 Oct 2014) - 1620000/02840228EUROPEAN PATENT APPLICATIONA320160413EP14181208.12014081720140819enenen20131397368620130822US2016041320161520150225201509E21B 33/129 20060101AFI20160309BHEP E21B 34/10 20060101ALI20160309BHEP E21B 43/12 20060101ALI20160309BHEP deRingförmiges Bohrlochsicherheitsventil und VerfahrenenWellbore Annular Safety Valve and MethodfrSoupape de sécurité annulaire d'un puits de forage et procédé1Services Petroliers Schlumberger100218771IS13.3170 EPEPA42, rue Saint-Dominique75007 ParisFRFRSchlumberger Holdings Limited101415390IS13.3170 EPEPAP.O. Box 71 Craigmuir ChambersRoad Town, Tortola 1110VGGBNLSCHLUMBERGER TECHNOLOGY B.V.100215713IS13.3170 EPEPAParkstraat 83-892514 JG Den HaagNLALATBEBGCHCYCZDEDKEEESFIGRHRHUIEISITLILTLULVMCMKMTNOPLPTRORSSESISKSMTRWindegaard, EirikSafirveien 14070 RandabergNOVarnes, Bjoern StaaleKvednaneset 334120 TauNODijkstra, NiekRosa de Lima 32, Las Rozas28290 MadridESMeling, GeirPrimstaven 434046 HafrsfjordNOWatson, Graham116 Hamilton PlaceAberdeen Aberdeenshire AB15 5BBGBFord, Michael Frederick101020297Schlumberger Cambridge Research Limited High Cross Madingley RoadCambridge CB3 0ELGBALATBEBGCHCYCZDEDKEEESFIFRGBGRHRHUIEISITLILTLULVMCMKMTNLNOPLPTRORSSESISKSMTRBAME20160413201615

A well system includes an annular barrier separating the tubing-casing annulus into an upper annulus (23) and a lower annulus (25) and a barrier valve(12) coupled with the annular barrier, the barrier valve permitting one-way fluid communication from the upper annulus to the lower annulus. The annular barrier may include a female polished bore receptacle(48) integrated in the casing and a male seal assembly (50) integrated in the tubing. The tubing bore and an annular fluid conduit extend through the male seal assembly substantially parallel to one another and the barrier valve is connected in the annular fluid conduit.

IS13.3170 EPEPAEP14181208.1Services Petroliers Schlumberger1MN20160315E21BUS4615387AJOHNSON DALE V [US] ET AL19861007X1-4,6,7Y8-16* page 2, lines 51-57; figures 1,4 *US5040606AHOPPER HANS P [GB]19910820X1,4* column 2, lines 48-50 ** column 5, lines 11-25 ** column 6, lines 1-14; figure 2 *US2003056958A1ALLAN JOSEPH CALDERHEAD [GB]20030327X1,4,5,7Y8-16* paragraphs [0036] - [0039]; figures 3a,3b *US2009095467A1PHLOI-MONTRI PRAMOTE [TH] ET AL20090416A1-16* figures 3,4 *Bellingacci, FMunich20160304US4615387A19861007NONEUS5040606A19910820NO903764A19910301US5040606A19910820US2003056958A120030327AU1872801A20010625GB2361722A20011031GB2376032A20021204MXPA02005992A20040812US2003056958A120030327WO0144618A220010621US2009095467A120090416NONE