Expandable wellbore junction

(19)

(11)

EP 1 428 974 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION

(48)	Corrigendum issued on:
	20.10.2004 Bulletin 2004/43

(43)	Date of publication:
	16.06.2004 Bulletin 2004/25

(21)	Application number: 04075738.7

(22)	Date of filing: 12.05.1999

(51)	International Patent Classification (IPC)⁷: E21B 33/10, E21B 7/08, E21B 29/06, E21B 23/06, E21B 23/04, E21B 33/12, E21B 33/127, E21B 43/10, E21B 7/06

(84)	Designated Contracting States:
	DE FR GB NL

(30)

Priority:

28.05.1998 US 86716

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	99303716.7 / 0961007

(71)	Applicant: Halliburton Energy Services, Inc.
	Dallas, Texas 75381-9052 (US)

(72)	Inventors:
	Gano, John C. Carrollton, Texas 75007 (US) Freeman, Tommie Flower Mound, Texas 75028 (US) Longbottom, Jim R. Magnolia, Texas 77353 (US) Bowling, John S. Missouri City, Texas 77459 (US)

(74)	Representative: Curtis, Philip Anthony et al
	A.A. Thornton & Co., 235 High Holborn London WC1V 7LE London WC1V 7LE (GB)


	Remarks:
	This application was filed on 05 - 03 - 2004 as a divisional application to the application mentioned under INID code 62.

(54)	Expandable wellbore junction

(57) A method of interconnecting first and second wellbores. The method comprises the steps of: forming a radially enlarged cavity (20) in the first wellbore (12) below casing (14) lining the first wellbore (20); positioning a wellbore connector (22) within the cavity (20), the wellbore connector (22) being configurable in expanded and contracted configurations; and expanding the wellbore connector (22) within the cavity (20).