ATE164888T1 - STAINLESS NON-MAGNETIC STEEL WITH HIGH MANGANESE AND CHROME CONTENT, HAVING HIGH RESISTANCE TO STRESS CORROSION AND USABLE FOR DRILLING EQUIPMENT AND METHOD OF PRODUCING RODS FROM THESE STEEL - Google Patents

STAINLESS NON-MAGNETIC STEEL WITH HIGH MANGANESE AND CHROME CONTENT, HAVING HIGH RESISTANCE TO STRESS CORROSION AND USABLE FOR DRILLING EQUIPMENT AND METHOD OF PRODUCING RODS FROM THESE STEEL

Info

Publication number
ATE164888T1
ATE164888T1 AT92401946T AT92401946T ATE164888T1 AT E164888 T1 ATE164888 T1 AT E164888T1 AT 92401946 T AT92401946 T AT 92401946T AT 92401946 T AT92401946 T AT 92401946T AT E164888 T1 ATE164888 T1 AT E164888T1
Authority
AT
Austria
Prior art keywords
steel
stress corrosion
bar
usable
drilling equipment
Prior art date
Application number
AT92401946T
Other languages
German (de)
Inventor
Jean Bourrat
Original Assignee
Aubert & Duval Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9409716&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE164888(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Aubert & Duval Sa filed Critical Aubert & Duval Sa
Application granted granted Critical
Publication of ATE164888T1 publication Critical patent/ATE164888T1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/16—Drill collars
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese

Abstract

Steel with austenitic structure, characterised by the corresponding mass proportions of the following elements: Carbon </= 0.025 %, preferably </= 0.020 %, Manganese 15 to 25 %, Chromium 10 to 15 %, Nickel < 0.25 %, Molybdenum 1.0 to 1.3 %, Nitrogen 0.30 to 0.50 %, Silicon < 1.0 %. The process of manufacture comprises the following stages: production of a starting ingot made of a steel as above; first homogeneous heating, to a temperature above the recrystallisation temperature of the steel; blanking the bar by hot drawing of the ingot; first cooling to ambient temperature; second homogeneous heating; forming the bar by forging and dressing in the press; second cooling to ambient temperature; and lastly final machining. In this way it is possible to produce a cold-worked nonmagnetic steel bar of length greater than 2.5 m exhibiting, over its whole length and homogeneously, a yield point, in lengthwise direction, of at least 760 MPa in the case of finished products of diameters of between 79 and 175 mm and of 690 MPa in the case of finished products of diameters of between 178 and 254 mm, and an insensitivity to intergranular corrosion and to stress corrosion.
AT92401946T 1991-02-14 1992-07-07 STAINLESS NON-MAGNETIC STEEL WITH HIGH MANGANESE AND CHROME CONTENT, HAVING HIGH RESISTANCE TO STRESS CORROSION AND USABLE FOR DRILLING EQUIPMENT AND METHOD OF PRODUCING RODS FROM THESE STEEL ATE164888T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9101743A FR2672904B1 (en) 1991-02-14 1991-02-14 NON-MAGNETIC STAINLESS STEEL BASED ON MANGANESE-CHROME RESISTANT TO CORROSION UNDER STRESS, METHOD OF MANUFACTURING A LONG-LENGTH NON-MAGNETIC STEEL BAR.

Publications (1)

Publication Number Publication Date
ATE164888T1 true ATE164888T1 (en) 1998-04-15

Family

ID=9409716

Family Applications (1)

Application Number Title Priority Date Filing Date
AT92401946T ATE164888T1 (en) 1991-02-14 1992-07-07 STAINLESS NON-MAGNETIC STEEL WITH HIGH MANGANESE AND CHROME CONTENT, HAVING HIGH RESISTANCE TO STRESS CORROSION AND USABLE FOR DRILLING EQUIPMENT AND METHOD OF PRODUCING RODS FROM THESE STEEL

Country Status (3)

Country Link
EP (1) EP0577898B1 (en)
AT (1) ATE164888T1 (en)
FR (1) FR2672904B1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2672904B1 (en) * 1991-02-14 1993-05-07 Aubert & Duval Acieries NON-MAGNETIC STAINLESS STEEL BASED ON MANGANESE-CHROME RESISTANT TO CORROSION UNDER STRESS, METHOD OF MANUFACTURING A LONG-LENGTH NON-MAGNETIC STEEL BAR.
FR2744379A1 (en) * 1996-02-07 1997-08-08 Smf Int METHOD FOR THE MECHANICAL TREATMENT OF A NON-MAGNETIC AUSTENITE STEEL LONG-SHAPED PRODUCT AND IN PARTICULAR OF A ROD SHEER FOR OIL DRILLING
DE19813459A1 (en) * 1998-03-26 1999-09-30 Mettler Toledo Gmbh Elastic deformable component and method for its production
AT407882B (en) 1999-07-15 2001-07-25 Schoeller Bleckmann Oilfield T METHOD FOR PRODUCING A PARAMAGNETIC, CORROSION-RESISTANT MATERIAL AND THE LIKE MATERIALS WITH A HIGH STRETCH LIMIT, STRENGTH AND TENSITY
JP4538966B2 (en) 2001-02-05 2010-09-08 大同特殊鋼株式会社 High strength and high corrosion resistance nonmagnetic stainless steel
JP4379804B2 (en) * 2004-08-13 2009-12-09 大同特殊鋼株式会社 High nitrogen austenitic stainless steel
CN101745786B (en) * 2009-12-31 2012-03-14 上海新闵重型锻造有限公司 Forging method of water supply connecting tube and secondary side manhole
CN108866424A (en) * 2018-07-13 2018-11-23 广州广钢新材料股份有限公司 A kind of corrosion-resistant screw-thread steel and preparation method thereof
CN110117746B (en) * 2019-02-01 2021-07-27 上海加宁新材料科技有限公司 Manufacturing method of high-performance non-magnetic stainless steel

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB779591A (en) * 1954-09-02 1957-07-24 Ford Motor Co Austenitic iron-base alloy
AT214466B (en) * 1959-06-04 1961-04-10 Schoeller Bleckmann Stahlwerke Steel alloys for the manufacture of drill collars for deep drill rods
BE754614A (en) * 1969-12-27 1971-01-18 Nisshin Steel Co Ltd AUSTENITIC STAINLESS STEELS
US4450008A (en) * 1982-12-14 1984-05-22 Earle M. Jorgensen Co. Stainless steel
AT381658B (en) * 1985-06-25 1986-11-10 Ver Edelstahlwerke Ag METHOD FOR PRODUCING AMAGNETIC DRILL STRING PARTS
FR2672904B1 (en) * 1991-02-14 1993-05-07 Aubert & Duval Acieries NON-MAGNETIC STAINLESS STEEL BASED ON MANGANESE-CHROME RESISTANT TO CORROSION UNDER STRESS, METHOD OF MANUFACTURING A LONG-LENGTH NON-MAGNETIC STEEL BAR.

Also Published As

Publication number Publication date
FR2672904A1 (en) 1992-08-21
FR2672904B1 (en) 1993-05-07
EP0577898B1 (en) 1998-04-08
EP0577898A1 (en) 1994-01-12

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee
RZN Patent revoked