EP 1995341 A4 20100310 - OIL WELL PIPE FOR EXPANSION IN WELL AND TWO-PHASE STAINLESS STEEL FOR USE AS OIL WELL PIPE FOR EXPANSION
Title (en)
OIL WELL PIPE FOR EXPANSION IN WELL AND TWO-PHASE STAINLESS STEEL FOR USE AS OIL WELL PIPE FOR EXPANSION
Title (de)
ERDÖHLBOHRUNGSROHR ZUR EXPANSION IM BOHRLOCH UND ZWEIPHASIGES EDELSTAHL ZUR VERWENDUNG ALS ERDÖLBOHRUNGSROHR ZUR EXPANSION
Title (fr)
CONDUITE DE PUITS DE PÉTROLE POUR DILATATION DANS UN PUITS ET ACIER INOXYDABLE À DEUX PHASES DESTINÉ À ÊTRE UTILISÉ EN TANT QUE CONDUITE DE PUITS DE PÉTROLE POUR DILATATION
Publication
Application
Priority
- JP 2008054747 W 20080314
- JP 2007078691 A 20070326
Abstract (en)
[origin: EP1995341A1] An oil country tubular good for expansion according to the invention is expanded in a well. The oil country tubular good for expansion according to the invention is formed of duplex stainless steel having a composition containing, in percentage by mass, 0.005% to 0.03% C, 0.1% to 1.0% Si, 0.2% to 2.0% Mn, at most 0.04% P, at most 0.015% S, 18.0% to 27.0% Cr, 4.0% to 9.0% Ni, at most 0.040% Al, and 0.05% to 0.40% N, and the balance consisting of Fe and impurities, a structure including an austenite ratio in the range from 40% to 90%. The oil country tubular good for expansion according to the invention has a yield strength from 256 MPa to 655 MPa, and a uniform elongation more than 20%. Therefore, the oil country tubular good for expansion according to the invention has a high pipe expansion characteristic.
IPC 8 full level
C21D 8/10 (2006.01); C22C 38/00 (2006.01); C22C 38/40 (2006.01); C22C 38/46 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP US)
C22C 38/001 (2013.01 - EP US); C22C 38/004 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/40 (2013.01 - EP US); C22C 38/42 (2013.01 - EP US); C22C 38/44 (2013.01 - EP US); C22C 38/46 (2013.01 - EP US); C22C 38/58 (2013.01 - EP US)
Citation (search report)
- [X] JP 2002241838 A 20020828 - SUMITOMO METAL IND
- [X] JP H03229839 A 19911011 - SUMITOMO METAL IND
- [X] JP H06256843 A 19940913 - NIPPON KOKAN KK
- [X] JP H07197130 A 19950801 - NIPPON KOKAN KK
- [X] US 5352406 A 19941004 - BARTERI MASSIMO [IT], et al
- [X] JP H09241746 A 19970916 - SUMITOMO METAL IND
- [X] EP 0757112 A1 19970205 - SUMITOMO METAL IND [JP]
- [X] US 4486231 A 19841204 - FUJIWARA KAZUO [JP], et al
- [X] JP S59182918 A 19841017 - KAWASAKI STEEL CO
- [X] JP H04280946 A 19921006 - SUMITOMO METAL IND
- [X] JP H02258956 A 19901019 - SUMITOMO METAL IND, et al
- [X] JP S6043467 A 19850308 - KAWASAKI STEEL CO
- [X] JP S57131347 A 19820814 - SUMITOMO METAL IND
- [X] JP S61113749 A 19860531 - KAWASAKI STEEL CO
- See references of WO 2008117680A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1995341 A1 20081126; EP 1995341 A4 20100310; AR 067233 A1 20091007; AU 2008207596 A1 20081016; BR PI0802616 A2 20110830; CA 2638289 A1 20080926; CA 2638289 C 20110830; CN 101541997 A 20090923; EA 013146 B1 20100226; EA 200870307 A1 20090227; JP WO2008117680 A1 20100715; MX 2008012238 A 20081128; UA 90217 C2 20100412; US 2009032246 A1 20090205; WO 2008117680 A1 20081002
DOCDB simple family (application)
EP 08722143 A 20080314; AR P080101165 A 20080319; AU 2008207596 A 20080314; BR PI0802616 A 20080314; CA 2638289 A 20080314; CN 200880000129 A 20080314; EA 200870307 A 20080314; JP 2008054747 W 20080314; JP 2009506286 A 20080314; MX 2008012238 A 20080314; UA A200811652 A 20080314; US 28503208 A 20080929