EP0207068B1 - Procédé de fabrication de tiges de forage amagnétiques - Google Patents

Procédé de fabrication de tiges de forage amagnétiques Download PDF

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Publication number
EP0207068B1
EP0207068B1 EP86890180A EP86890180A EP0207068B1 EP 0207068 B1 EP0207068 B1 EP 0207068B1 EP 86890180 A EP86890180 A EP 86890180A EP 86890180 A EP86890180 A EP 86890180A EP 0207068 B1 EP0207068 B1 EP 0207068B1
Authority
EP
European Patent Office
Prior art keywords
fact
accordance
cold forming
forming
subjected
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
EP86890180A
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German (de)
English (en)
Other versions
EP0207068A2 (fr
EP0207068A3 (en
Inventor
Heinz Dr. Kohl
Helmut Dipl.-Ing. Pohl
Alois Püchl
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.)
Schoeller Bleckmann GmbH
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Schoeller Bleckmann GmbH
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Publication date
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Application filed by Schoeller Bleckmann GmbH filed Critical Schoeller Bleckmann GmbH
Publication of EP0207068A2 publication Critical patent/EP0207068A2/fr
Publication of EP0207068A3 publication Critical patent/EP0207068A3/de
Application granted granted Critical
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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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys

Definitions

  • the invention relates to a method for producing non-magnetic drill string parts.
  • Such drill string parts are, for example, drill collars for exploration drilling, e.g. for oil and / or natural gas deposits, such as directional drilling or the like.
  • the position and direction of the drilling is determined by magnetic measurement.
  • the very precise magnetic field measurement which is undisturbed if suitable material is used, is still preferred. Since such bores extend to ever greater depths, a particularly exact position determination is required.
  • the drill string parts in particular those drill string parts which are arranged in the immediate vicinity of the measuring device, for example a forester probe, may only have magnetic anomalies to the smallest extent. So it is known, for example, if drill collars have a greater maximum compass deviation than ⁇ 1/4 °, then they no longer meet the requirements or only in rare cases.
  • these drill string parts must have a high mechanical strength, etc. for both tensile and compressive loads, depending on whether a corresponding pressure is exerted on the drill head or whether the drill head is pulled out of the borehole. Furthermore, these drill string parts are subject to high torsional stress, since at least part of the rotary movement is carried out on the drill head. Furthermore, the alloys must be suitable for extruded parts for threaded connections, which also according to long mechanical stress without "seizing" must be releasable.
  • Another very important criterion is the corrosion resistance, in particular the resistance to stress corrosion cracking, since such drill string parts are often exposed to strongly corrosive media, for example multi-percent sodium chloride solutions and / or magnesium chloride solutions and hydrogen sulfide and the like.
  • This alloy is subjected to cold working at room temperature in order to obtain the required mechanical properties.
  • the present invention has set itself the goal of creating a process for the production of non-magnetic drill string parts which have a sufficiently high mechanical strength with little scatter, in particular by cold working, which at the same time ensures that no or only insignificant magnetizable islands remain in the drill string part , wherein the drill string parts should have no permanent magnetization even with high magnetic fields.
  • Remainder iron and possibly one or more of the following elements vanadium, boron and aluminum and production-related impurities are solidified, subjected to at least 2 times hot working, solution annealed at 1020 to 1070 ° C., then quenched and subjected to cold working, essentially in that the cold forming is carried out at a temperature above 100 ° C and below about 700 ° C and with at least 5% deformation.
  • Cold forging in particular stretch forging, has proven particularly useful as cold deformation, although different degrees of deformation can exist from the center to the edge region.
  • a mechanical, in particular machining, is carried out according to a further feature of the present invention after the cold working, without this resulting in significant processing obstructions.
  • the resistance to stress corrosion cracking it is preferably carried out in such a way that residual internal stresses are introduced in the near-surface areas by local cold deformation at a temperature above 100 ° C and below approx. 700 ° C Can prevent magnetizability even under unfavorable conditions.
  • the residual compressive stresses are preferably introduced by shot peening.
  • the preferred limits for cold forming are at a temperature above 100 ° C and below 550 ° C, whereby a particular resistance to intra- and intergranular stress corrosion cracking can be achieved.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Heat Treatment Of Steel (AREA)
  • Earth Drilling (AREA)
  • Heat Treatment Of Articles (AREA)

Claims (12)

1. Procédé de fabrication de tiges de forage amagnétiques, dans lequel on laisse se solidifier un alliage composé, en pourcentage pondéral, de:
Carbone   max. 0,15 ,
Silicium   max, 1,0 ,
Manganèse   11,0 à 25,0 ,
Chrome   10,0 à 20,0 ,
Molybdène   jusqu'à 1,0 ,
Nickel   jusqu'à 6,0 ,
Niobium et/ou Tantale   jusqu'à 2,0 ,
Azote   0,05 à 0,5 ,

le reste étant constitué par du fer et éventuellement un ou plusieurs des éléments suivants: vanadium, bore et aluminium, on le soumet au moins 2 fois à un façonnage à chaud, on effectue un recuit de mise en solution entre 1020 et 1070°C, puis on le trempe et on le soumet à un façonnage à froid, caractérisé en ce qu'on effectue le façonnaqe à froid à une température supérieure à 100°C et inférieure à environ 700°C avec une déformation d'au moins 5%.
2. procédé de préparation de tiges de forage amagnétiques, dans lequel on laisse se solidifier un alliage composé, en pourcentage pondéral, de:
Carbone   max, 0,08 ,
Silicium   max, 1,0 ,
Manganèse   12,0 à 20,0 ,
Chrome   11,0 à 16,0 ,
Molybdène   0,2 à 0,8 ,
Nickel   1,0 à 2,5 ,
Niobium et/ou Tantale   0,4 à 0,8 ,
Azote   0,1 à 0,35 ,
le reste étant constitué par du fer et éventuellemrnt un ou plusieurs des éléments suivants: vanadium, bore et aluminium, on le soumet au moins 2 fois à un façonnage à chaud, on effectue un recuit de mise en solution entre 1020 et 1070°C, puis on le trempe et on le soumet à un façonnage à froid, caractérisé en ce qu'on effectue le façonnage à froid à une température supérieure à 100°cet inférieure à environ 700°C avec une déformation d'au moins 5%.
3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'on procède au façonnage à froid à une température inférieure ou point de Curie du fer.
4. Procédé selon la revendication 1, 2 ou 3, caractérisé en ce qu'on procède au façonnage à froid avec une déformation d'au moins 12%.
5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce qu'on forge à froid pour le façonnage à froid.
6. Procédé selon la revendication 5, caractérisé en ce qu'on forge avec étirage pour le façonnage à froid.
7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce qu'un traitement mécanique suit le façonnage à froid.
8. Procédé selon la revendication 7, caractérisé en ce qu'un traitement d'enlèvement des copeaux suit le façonnage à froid.
9. Procédé selon l'une des revendications 1 à 8, caractérisé en ce qu'on introduit des contraintes propres sous pression dans des zones marginales voisines de la surface par un façonnage local à froid à une température supérieure à 100°C et inférieure à environ 700°C.
10. Procédé selon la revendication 9, caractérisé en ce qu'on introduit des contraintes propres sous pression dans des zones marginales voisines de la surface par un façonnage local à froid à une température inférieure au point de Curie du fer.
11. Procédé selon la revendication 9 ou 10, caractérisé en ce que les tensions propres sous pression sont introduites au moyen d'un décapage par grenaillage.
12. Procédé selon l'une des revendications 1 à 11, caractérisé en ce qu'on procède au façonnage à froid à une température supérieure à 100°C et inférieure à 550°C.
EP86890180A 1985-06-25 1986-06-19 Procédé de fabrication de tiges de forage amagnétiques Expired - Lifetime EP0207068B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1879/85 1985-06-25
AT0187985A AT381658B (de) 1985-06-25 1985-06-25 Verfahren zur herstellung von amagnetischen bohrstrangteilen

Publications (3)

Publication Number Publication Date
EP0207068A2 EP0207068A2 (fr) 1986-12-30
EP0207068A3 EP0207068A3 (en) 1988-11-09
EP0207068B1 true EP0207068B1 (fr) 1991-09-25

Family

ID=3522989

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86890180A Expired - Lifetime EP0207068B1 (fr) 1985-06-25 1986-06-19 Procédé de fabrication de tiges de forage amagnétiques

Country Status (5)

Country Link
US (1) US4919728A (fr)
EP (1) EP0207068B1 (fr)
JP (1) JPS621815A (fr)
AT (1) AT381658B (fr)
DE (1) DE3681641D1 (fr)

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AT392802B (de) * 1988-08-04 1991-06-25 Schoeller Bleckmann Stahlwerke Verfahren zur herstellung von spannungsrisskorrosionsbestaendigen rohrfoermigen koerpern, insbesondere nichtmagnetisierbaren schwerstangen aus austenitischen staehlen
FR2672904B1 (fr) * 1991-02-14 1993-05-07 Aubert & Duval Acieries Acier inoxydable amagnetique a base manganese-chrome resistant a la corrosion sous contrainte, procede de fabrication d'une barre en acier amagnetique de grande longueur.
US5904499A (en) * 1994-12-22 1999-05-18 Pace; Benedict G Package for power semiconductor chips
FR2744379A1 (fr) * 1996-02-07 1997-08-08 Smf Int Procede de traitement mecanique d'un produit de forme allongee en acier austenitique amagnetique et en particulier d'une masse-tige pour forage petrolier
US5672218A (en) * 1996-06-24 1997-09-30 Slater Steels Corporation Method of straightening metal bars having extremely low levels of residual stress after straightening operations are completed
GB2331103A (en) * 1997-11-05 1999-05-12 Jessop Saville Limited Non-magnetic corrosion resistant high strength steels
AT407882B (de) * 1999-07-15 2001-07-25 Schoeller Bleckmann Oilfield T Verfahren zur herstellung eines paramagnetischen, korrosionsbeständigen werkstoffes u.dgl. werkstoffe mit hoher dehngrenze, festigkeit und zähigkeit
SE522352C2 (sv) * 2000-02-16 2004-02-03 Sandvik Ab Avlångt element för slående bergborrning och användning av stål för detta
JP2003155542A (ja) * 2001-11-21 2003-05-30 Japan Atom Energy Res Inst 熱間加工性及び超伝導材生成熱処理後の耐加熱脆化特性に優れた超伝導マグネット構造材用高Ｍｎ非磁性鋼
US20040221929A1 (en) 2003-05-09 2004-11-11 Hebda John J. Processing of titanium-aluminum-vanadium alloys and products made thereby
AT412727B (de) 2003-12-03 2005-06-27 Boehler Edelstahl Korrosionsbeständige, austenitische stahllegierung
US7837812B2 (en) 2004-05-21 2010-11-23 Ati Properties, Inc. Metastable beta-titanium alloys and methods of processing the same by direct aging
DE602007008420D1 (de) * 2006-06-23 2010-09-23 Jorgensen Forge Corp Austenitischer paramagnetischer korrosionsfreier stahl
US7658883B2 (en) * 2006-12-18 2010-02-09 Schlumberger Technology Corporation Interstitially strengthened high carbon and high nitrogen austenitic alloys, oilfield apparatus comprising same, and methods of making and using same
SE532138C2 (sv) * 2007-07-11 2009-11-03 Sandvik Intellectual Property Avlångt element för slående bergborrning, förfarande för framställning därav samt användning därav
US10053758B2 (en) * 2010-01-22 2018-08-21 Ati Properties Llc Production of high strength titanium
US9255316B2 (en) 2010-07-19 2016-02-09 Ati Properties, Inc. Processing of α+β titanium alloys
US9206497B2 (en) 2010-09-15 2015-12-08 Ati Properties, Inc. Methods for processing titanium alloys
US8613818B2 (en) 2010-09-15 2013-12-24 Ati Properties, Inc. Processing routes for titanium and titanium alloys
US10513755B2 (en) 2010-09-23 2019-12-24 Ati Properties Llc High strength alpha/beta titanium alloy fasteners and fastener stock
US20120160363A1 (en) * 2010-12-28 2012-06-28 Exxonmobil Research And Engineering Company High manganese containing steels for oil, gas and petrochemical applications
US8652400B2 (en) 2011-06-01 2014-02-18 Ati Properties, Inc. Thermo-mechanical processing of nickel-base alloys
AU2012362827B2 (en) 2011-12-30 2016-12-22 Scoperta, Inc. Coating compositions
US9050647B2 (en) 2013-03-15 2015-06-09 Ati Properties, Inc. Split-pass open-die forging for hard-to-forge, strain-path sensitive titanium-base and nickel-base alloys
US9738959B2 (en) 2012-10-11 2017-08-22 Scoperta, Inc. Non-magnetic metal alloy compositions and applications
US9869003B2 (en) 2013-02-26 2018-01-16 Ati Properties Llc Methods for processing alloys
US9192981B2 (en) 2013-03-11 2015-11-24 Ati Properties, Inc. Thermomechanical processing of high strength non-magnetic corrosion resistant material
US9777361B2 (en) 2013-03-15 2017-10-03 Ati Properties Llc Thermomechanical processing of alpha-beta titanium alloys
US11111552B2 (en) * 2013-11-12 2021-09-07 Ati Properties Llc Methods for processing metal alloys
CA2931842A1 (fr) 2013-11-26 2015-06-04 Scoperta, Inc. Alliage a rechargement dur resistant a la corrosion
US11130205B2 (en) 2014-06-09 2021-09-28 Oerlikon Metco (Us) Inc. Crack resistant hardfacing alloys
CA2971202C (fr) 2014-12-16 2023-08-15 Scoperta, Inc. Alliages ferreux tenaces et resistants a l'usure contenant de multiples phases dures
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US10105796B2 (en) 2015-09-04 2018-10-23 Scoperta, Inc. Chromium free and low-chromium wear resistant alloys
MX2018002764A (es) 2015-09-08 2018-09-05 Scoperta Inc Carburo no magnetico, que forma aleaciones para fabricar polvo.
JP2018537291A (ja) 2015-11-10 2018-12-20 スコペルタ・インコーポレイテッドＳｃｏｐｅｒｔａ， Ｉｎｃ． 酸化抑制ツインワイヤーアークスプレー材料
US10502252B2 (en) 2015-11-23 2019-12-10 Ati Properties Llc Processing of alpha-beta titanium alloys
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Also Published As

Publication number Publication date
ATA187985A (de) 1986-04-15
US4919728A (en) 1990-04-24
DE3681641D1 (de) 1991-10-31
EP0207068A2 (fr) 1986-12-30
AT381658B (de) 1986-11-10
JPS621815A (ja) 1987-01-07
EP0207068A3 (en) 1988-11-09

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