EP0277065B1 - Acier amagnétique au manganèse et au chrome et élément tubulaire d'une colonne de forage réalisé en acier - Google Patents

Acier amagnétique au manganèse et au chrome et élément tubulaire d'une colonne de forage réalisé en acier Download PDF

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Publication number
EP0277065B1
EP0277065B1 EP88400112A EP88400112A EP0277065B1 EP 0277065 B1 EP0277065 B1 EP 0277065B1 EP 88400112 A EP88400112 A EP 88400112A EP 88400112 A EP88400112 A EP 88400112A EP 0277065 B1 EP0277065 B1 EP 0277065B1
Authority
EP
European Patent Office
Prior art keywords
steel
chromium
manganese
corrosion
magnetic
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP88400112A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0277065A3 (en
EP0277065A2 (fr
Inventor
Jean-Paul Houvion
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
S M F International
Original Assignee
S M F International
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=9347222&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0277065(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by S M F International filed Critical S M F International
Priority to AT88400112T priority Critical patent/ATE54952T1/de
Publication of EP0277065A2 publication Critical patent/EP0277065A2/fr
Publication of EP0277065A3 publication Critical patent/EP0277065A3/fr
Application granted granted Critical
Publication of EP0277065B1 publication Critical patent/EP0277065B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Definitions

  • Tubular elements of a drill string are known, such as drill collars, stabilizers or other measuring or control equipment which are made of non-magnetic steel. These elements must also resist stress corrosion in drilling muds which contain high proportions of chloride.
  • the corrosion tests were carried out in a solution whose composition approximates that of the most corrosive drilling mud encountered and used in drilling.
  • the tensile strength in the corrosive environment can be considered as a completely representative parameter of the corrosion resistance.
  • the test consists in subjecting a test piece to a rotary bending in the chloride solution mentioned above.
  • the rotation speed is 120 revolutions per minute.
  • a load equal to 75% of the elastic limit of the material is applied and, in a second series of tests, a load equal to 50% of this elastic limit. The number of cycles at break is noted each time.
  • drilling muds are generally at pH values between 10 and 12.
  • the conditions for forging the tubular parts as defined above correspond to a forging temperature of 680 to 650 ° C.
  • the forging operation is therefore adjusted as a function of the steel's ambient air cooling curve, to avoid forging in the critical precipitation zone.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Earth Drilling (AREA)
  • Soft Magnetic Materials (AREA)
  • Hard Magnetic Materials (AREA)
  • Heat Treatment Of Steel (AREA)
  • Road Signs Or Road Markings (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Drilling And Boring (AREA)
  • Drilling Tools (AREA)
EP88400112A 1987-01-23 1988-01-19 Acier amagnétique au manganèse et au chrome et élément tubulaire d'une colonne de forage réalisé en acier Expired - Lifetime EP0277065B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88400112T ATE54952T1 (de) 1987-01-23 1988-01-19 Amagnetischer mangan-chrom-stahl und daraus hergestelltes roehrenfoermiges element eines bohrturms.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8700810A FR2610008A1 (fr) 1987-01-23 1987-01-23 Acier amagnetique au manganese et au chrome et element tubulaire d'une colonne de forage realise en cet acier
FR8700810 1987-01-23

Publications (3)

Publication Number Publication Date
EP0277065A2 EP0277065A2 (fr) 1988-08-03
EP0277065A3 EP0277065A3 (en) 1988-08-10
EP0277065B1 true EP0277065B1 (fr) 1990-07-25

Family

ID=9347222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88400112A Expired - Lifetime EP0277065B1 (fr) 1987-01-23 1988-01-19 Acier amagnétique au manganèse et au chrome et élément tubulaire d'une colonne de forage réalisé en acier

Country Status (5)

Country Link
EP (1) EP0277065B1 (cg-RX-API-DMAC7.html)
AT (1) ATE54952T1 (cg-RX-API-DMAC7.html)
DE (1) DE3860343D1 (cg-RX-API-DMAC7.html)
ES (1) ES2017790B3 (cg-RX-API-DMAC7.html)
FR (1) FR2610008A1 (cg-RX-API-DMAC7.html)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2001155C1 (ru) * 1992-01-29 1993-10-15 Научно-производственное предпри тие "Салма" Лита аустенитна сталь
AT397968B (de) * 1992-07-07 1994-08-25 Boehler Ybbstalwerke Korrosionsbeständige legierung zur verwendung als werkstoff für in berührungskontakt mit lebewesen stehende teile
FR3008636B1 (fr) 2013-07-18 2015-08-07 Air Liquide Welding France Flux et procede de soudage a l'arc submerge des aciers a forte teneur en chrome

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE728159C (de) * 1936-10-09 1942-11-21 Boehler & Co Ag Geb Chrom-Mangan-Stickstoff-Stahl
AT214466B (de) * 1959-06-04 1961-04-10 Schoeller Bleckmann Stahlwerke Stahllegierungen zur Herstellung von Schwerstangen für Tiefbohrgestänge
AT233038B (de) * 1961-10-18 1964-04-25 Schoeller Bleckmann Stahlwerke Austenitische, korrosionsbeständige Chrom-Mangan-Stickstoff-Stähle zur Herstellung von gegen Spannungsrißkorrosion beständigen Gegenständen
US4450008A (en) * 1982-12-14 1984-05-22 Earle M. Jorgensen Co. Stainless steel

Also Published As

Publication number Publication date
ATE54952T1 (de) 1990-08-15
EP0277065A3 (en) 1988-08-10
FR2610008A1 (fr) 1988-07-29
ES2017790B3 (es) 1991-03-01
FR2610008B1 (cg-RX-API-DMAC7.html) 1993-02-26
EP0277065A2 (fr) 1988-08-03
DE3860343D1 (de) 1990-08-30

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