Liner assembly and method of running the same

(19)

(11)

EP 1 026 365 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	09.05.2001 Bulletin 2001/19

(43)	Date of publication A2:
	09.08.2000 Bulletin 2000/32

(21)	Application number: 00300442.1

(22)	Date of filing: 21.01.2000

(51)	International Patent Classification (IPC)⁷: E21B 33/14, E21B 43/10

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

06.02.1999 GB 9902683

(71)	Applicant: Weatherford/Lamb Inc.
	Wilmington, DE 19805 (US)

(72)	Inventor:
	Davison, John Aberdeenshire AB39 2CU (GB)

(74)	Representative: Harding, Richard Patrick et al
	Marks & Clerk, 4220 Nash Court, Oxford Business Park South Oxford OX4 2RU Oxford OX4 2RU (GB)

(54)	Liner assembly and method of running the same

(57) A liner assembly which comprises:

(a) a liner (3);
(b) a non-return valve at or adjacent the downstream end of said liner (3);
(c) a liner hanger assembly (5) at or adjacent the upstream end of said liner (3);
(d) a running tool (9) releasably connected to said liner hanger assembly (5); and
(e) a plug (10) at or adjacent the upstream end of said liner (3) and defining with said non-return valve (4) and said liner (3) an isolated space (16), said plug (10) having a unit (13, 14) which can be acted upon to allow fluid to pass into said isolated space (16).