Wellbore Annular Safety Valve and Method

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(11)

EP 2 840 228 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	13.04.2016 Bulletin 2016/15

(43)	Date of publication A2:
	25.02.2015 Bulletin 2015/09

(21)	Application number: 14181208.1

(22)	Date of filing: 17.08.2014

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International Patent Classification (IPC):

E21B 33/129^(2006.01)
E21B 43/12^(2006.01)

E21B 34/10^(2006.01)

(84)	Designated Contracting States:
	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
	Designated Extension States:
	BA ME

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Priority:

22.08.2013 US 201313973686

(71)	Applicants:
	Services Petroliers Schlumberger 75007 Paris (FR) FR Schlumberger Holdings Limited Road Town, Tortola 1110 (VG) GB NL SCHLUMBERGER TECHNOLOGY B.V. 2514 JG Den Haag (NL) AL AT BE BG CH CY CZ DE DK EE ES FI GR HR HU IE IS IT LI LT LU LV MC MK MT NO PL PT RO RS SE SI SK SM TR

(72)	Inventors:
	Windegaard, Eirik 4070 Randaberg (NO) Varnes, Bjoern Staale 4120 Tau (NO) Dijkstra, Niek 28290 Madrid (ES) Meling, Geir 4046 Hafrsfjord (NO) Watson, Graham Aberdeen Aberdeenshire AB15 5BB (GB)

(74)	Representative: Ford, Michael Frederick
	Schlumberger Cambridge Research Limited High Cross Madingley Road Cambridge CB3 0EL Cambridge CB3 0EL (GB)

(54)	Wellbore Annular Safety Valve and Method

(57) 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.

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