(19)

(11)

EP 1 957 745 A1

(12)

(43) Date of publication: 20.08.2008 Bulletin 2008/34 (21) Application number: 06837756.3 (22) Date of filing: 15.11.2006

(51) International Patent Classification (IPC):  E21B 10/46(2006.01) C22C 38/22(2006.01) B23K 35/30(2006.01) C23C 30/00(2006.01) (86) International application number: PCT/US2006/044467 (87) International publication number: WO 2007/059267 (24.05.2007 Gazette 2007/21)

(84) Designated Contracting States: DE FR GB IE IT NL (30) Priority: 15.11.2005 US 737003 P (71) Applicant: Baker Hughes Incorporated Houston, TX 77210-4740 (US)	(72) Inventors: OVERSTREET, James, L. Tomball, TX 77377 (US) CURRY, David, A. The Woodlands, TX 77382 (US) EASON, Jimmy, W. The Woodlands, TX 77382 (US) STEVENS, John, H. Spring, TX 77382 (US) SULLIVAN, Eric, C. Houston, TX 77089 (US) (74) Representative: Hano, Christian  v. Füner Ebbinghaus Finck Hano Patentanwälte Mariahilfplatz 3 81541 München 81541 München (DE)