FR2704042A1 - FS seal for large-diameter pipe - Google Patents
FS seal for large-diameter pipe Download PDFInfo
- Publication number
- FR2704042A1 FR2704042A1 FR9404374A FR9404374A FR2704042A1 FR 2704042 A1 FR2704042 A1 FR 2704042A1 FR 9404374 A FR9404374 A FR 9404374A FR 9404374 A FR9404374 A FR 9404374A FR 2704042 A1 FR2704042 A1 FR 2704042A1
- Authority
- FR
- France
- Prior art keywords
- assembly according
- axial surface
- sealing assembly
- radial surfaces
- distance
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
- F16L21/03—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings placed in the socket before connection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
- F16J15/022—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material
- F16J15/024—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/166—Sealings between relatively-moving surfaces with means to prevent the extrusion of the packing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Description
JOINT F8 POUR TUYAU DE GRAND DIAXETRE
Cette invention concerne des joints à utiliser entre un tubage pétrolier et des têtes de puits, et plus particulièrement des joints en élastomère destinés à assurer l'étanchéité entre des éléments tubulaires interposés conçus avec des tolérances relativement grandes.JOINT F8 FOR LARGE DIAXETER PIPE
This invention relates to seals for use between petroleum casing and wellheads, and more particularly to elastomer seals for sealing between interposed tubular elements designed with relatively large tolerances.
Des joints à utiliser entre un tubage et des têtes de puits doivent pouvoir supporter des conditions de température et de pression élevées tout en assurant une étanchéité efficace entre une tête de puits et une surface brute de tubage. Les joints doivent aussi s'adapter à différentes dimensions d'ouverture entre les éléments tubulaires. Typiquement, des diametres de tube compris entre 6 cm (2 3/8") et 45,7 cm (18") permettent une tolérance de + 1,00 %, - 0,50 % du diamètre extérieur, tandis que des diamètres de tube entre 50,8 cm (20") et 91,4 cm (36") permettent une tolérance de + 1,00 % du diamètre extérieur. En raison de ces tolérances, et du fait que le tubage est souvent excentrique par rapport à l'alésage d'une tête de puits, une ouverture relativement grande peut être créée entre le tubage et la tête de puits. Pour les mêmes raisons, une ouverture relativement petite peut survenir. I1 y a donc un besoin pour un joint polyvalent qui peut s'adapter à une surface brute de tubage et à différentes dimensions d'ouverture entre des éléments tubulaires. Seals to be used between casing and wellheads must be able to withstand high temperature and pressure conditions while ensuring an effective seal between a wellhead and a gross casing surface. The joints must also adapt to different opening dimensions between the tubular elements. Typically, tube diameters between 6 cm (2 3/8 ") and 45.7 cm (18") allow a tolerance of + 1.00%, - 0.50% of the outside diameter, while diameters of tube between 50.8 cm (20 ") and 91.4 cm (36") allow a tolerance of + 1.00% of the outside diameter. Because of these tolerances, and because the casing is often eccentric to the bore of a wellhead, a relatively large opening can be created between the casing and the wellhead. For the same reasons, a relatively small opening may occur. There is therefore a need for a versatile joint which can adapt to a gross casing surface and to different opening dimensions between tubular elements.
La présente invention comprend un corps de joint annulaire en élastomère ayant une section transversale généralement rectangulaire. La face axiale interne du corps de joint a une partie centrale généralement convexe s'étendant radialement vers l'intérieur. La face axiale externe du corps de joint a une partie centrale généralement concave s'étendant radialement vers l'intérieur. Le corps de joint comprend en outre au moins un élément annulaire à ressort positionné à l'intérieur du corps de joint et placé attenant à la face axiale interne du corps de joint. L'élément à ressort doit avoir un diamètre égal à environ 1,5 à 2 fois la distance ou l'espace entre la tête de puits et le tubage afin de fournir un appui à la partie convexe prolongée et fournir des propriétés anti-extrusion. The present invention includes an elastomeric annular seal body having a generally rectangular cross section. The inner axial face of the seal body has a generally convex central portion extending radially inward. The outer axial face of the seal body has a generally concave central portion extending radially inward. The seal body further comprises at least one annular spring element positioned inside the seal body and placed adjacent to the internal axial face of the seal body. The spring element must have a diameter equal to approximately 1.5 to 2 times the distance or space between the wellhead and the casing in order to provide support for the extended convex part and provide anti-extrusion properties.
La figure 1 est une vue partielle en coupe d'une première réalisation du joint placé dans une rainure dans une tête de puits et s'étendant en contact avec un tubage. Figure 1 is a partial sectional view of a first embodiment of the seal placed in a groove in a well head and extending in contact with a casing.
La figure 2 est une vue partielle en coupe d'une deuxième réalisation du joint placé dans une rainure dans une tête de puits et s'étendant en contact avec un tubage. Figure 2 is a partial sectional view of a second embodiment of the seal placed in a groove in a well head and extending in contact with a casing.
La figure 3 est une vue partielle en coupe d'une troisieme réalisation du joint placé dans une rainure dans une tête de puits et s'étendant en contact avec un tubage. Figure 3 is a partial sectional view of a third embodiment of the seal placed in a groove in a well head and extending in contact with a casing.
La figure 4 est une vue partielle en coupe d'une quatrième réalisation du joint placé dans une rainure dans une tête de puits et s'étendant en contact avec un tubage. Figure 4 is a partial sectional view of a fourth embodiment of the seal placed in a groove in a well head and extending in contact with a casing.
Comme montré sur la figure 1, l'ensemble d'étanchéité de la présente- invention comprend un corps de joint annulaire 10 placé dans une rainure annulaire 12 d'une tête de puits 14 dans laquelle un tubage 16 est positionné. Le corps de joint 10 présente une section transversale de forme généralement rectangulaire ayant une surface radiale supérieure 11 et une surface radiale inférieure 13. Un espace 18 existe entre la tête de puits 14 et la tubage 16. As shown in FIG. 1, the sealing assembly of the present invention comprises an annular seal body 10 placed in an annular groove 12 of a well head 14 in which a casing 16 is positioned. The seal body 10 has a generally rectangular cross section having an upper radial surface 11 and a lower radial surface 13. A space 18 exists between the well head 14 and the casing 16.
L'espace 18 peut etre dû aux tolérances de fabrication ou à la position excentrique du tubage 16 par rapport à la tête depuits 14. Le corps de joint annulaire 10 est fabriqué en élastomère ou autre matériau adéquat ayant des propriétés identiques.The space 18 may be due to manufacturing tolerances or to the eccentric position of the casing 16 relative to the well head 14. The annular seal body 10 is made of elastomer or other suitable material having identical properties.
L'ensemble d'étanchéité comprend en outre une partie centrale convexe 20 sur la surface axiale interne du corps de joint 10 s'étendant radialement vers l'intérieur à partir d'une ligne imaginaire reliant les extrémités axiales internes des surfaces radiales 11 et 13. La partie convexe 20 s'étend sur une distance plus grande que l'espace 18 de sorte que, lorsque positionnée dans la tête de puits 14 recevant le tubage 16, la partie convexe 20 s'étende à travers l'espace 18 et s'appuie contre la paroi extérieure du tubage 16. Une partie concave centrale 22 sur la surface axiale extérieure du corps de joint 10 s'étend radialement vers l'intérieur à partir d'une ligne imaginaire reliant les extrémités axiales extérieures des surfaces radiales 11 et 13. Le volume de matériau en élastomère comprenant la partie convexe 20 qui s'étend radialement vers l'intérieur au delà d'une ligne imaginaire reliant les extrémités axiales intérieures des surfaces radiales 11 et 13 est approximativement égal au volume de l'espace vide formé par la partie concave 22 qui s'étend radialement vers l'intérieur au delà d'une ligne imaginaire reliant les extrémités axiales extérieures des surfaces radiales li et 13. La partie concave 22 fournit un espace pour que le matériau en élastomère se stabilise lorsque le joint est dans un état hautement comprimé. The sealing assembly further comprises a convex central part 20 on the internal axial surface of the seal body 10 extending radially inwards from an imaginary line connecting the internal axial ends of the radial surfaces 11 and 13 The convex part 20 extends over a greater distance than the space 18 so that, when positioned in the well head 14 receiving the casing 16, the convex part 20 extends through the space 18 and s bears against the outer wall of the casing 16. A central concave portion 22 on the outer axial surface of the seal body 10 extends radially inward from an imaginary line connecting the outer axial ends of the radial surfaces 11 and 13. The volume of elastomer material comprising the convex part 20 which extends radially inwards beyond an imaginary line connecting the internal axial ends of the radial surfaces 11 and 1 3 is approximately equal to the volume of the empty space formed by the concave part 22 which extends radially inwards beyond an imaginary line connecting the external axial ends of the radial surfaces li and 13. The concave part 22 provides a space for the elastomeric material to stabilize when the seal is in a highly compressed state.
Encastré dans le corps en élastomère 10 se trouve au moins un élément annulaire à ressort 24. Embedded in the elastomer body 10 is at least one annular spring element 24.
L'élément annulaire X ressort 24 peut comprendre un ressort hélicoïdal. Les éléments annulaires à ressort 24 sont positionnés à l'intersection de la surface axiale intérieure et d'une ou l'autre des surfaces radiales fi et 13. Dans la réalisation de la figure 1, il y a deux éI;ments annulaires à ressort 24. Les éléments- annulaires à ressort 24 fonctionnent comme éléments- anti-extrusion et fournissent un appui pour la partie convexe prolongée 20. Les éléments à ressort 24 réalisent un appui à la base de la partie convexe 20 où elle s'étend à partir du corps du joint en élastomère 10. Les éléments à ressort 24 résistent à la déformation à la jonction de la partie convexe 20 et du corps du joint 10, fournissant une résistance aux forces de compression et aux moments auxquels la partie convexe 20 peut être soumise. Les éléments à ressort sont conçus pour avoir un diamètre d'au moins 1,5 fois environ la distance de l'espace 18 afin de fournir un appui adéquat à la partie convexe 20. De manière optimale, -les éléments à ressort 24 ont un diamètre dans -la gamme d'environ 1,5 à 2 fois la distance de l'espace 18.The annular element X spring 24 may comprise a helical spring. The annular spring elements 24 are positioned at the intersection of the inner axial surface and one or the other of the radial surfaces fi and 13. In the embodiment of FIG. 1, there are two annular spring elements 24. The annular spring elements 24 function as anti-extrusion elements and provide support for the extended convex part 20. The spring elements 24 provide support at the base of the convex part 20 where it extends from of the elastomeric seal body 10. The spring elements 24 resist deformation at the junction of the convex part 20 and the seal body 10, providing resistance to the compressive forces and to the moments to which the convex part 20 can be subjected . The spring elements are designed to have a diameter of at least 1.5 times the distance from the space 18 in order to provide adequate support for the convex part 20. Optimally, the spring elements 24 have a diameter in the range of about 1.5 to 2 times the distance from space 18.
Des réalisations alternatives sont représentées sur les figures 2 et 3 qui comprennent seulement un élément annulaire à ressort 24. Dans ces réalisations, il est préférable de n'incorporer qu'un élément à ressort 24 dans l'ensemble d'étanchéité afin d'obtenir la compression et le remplissage de volume nécessaires pour un joint efficace lorsque la dimension en coupe transversale d'un joint à double ressort s'avère autrement impraticable pour des épaisseurs conventionnelles de parois de tubage. L'utilisation d'un élément à simple ressort 24 permet une réduction de la zone de section transversale et résulte en un joint unidirectionnel. Alternative embodiments are shown in Figures 2 and 3 which include only an annular spring element 24. In these embodiments, it is preferable to incorporate only one spring element 24 in the sealing assembly in order to obtain the compression and volume filling necessary for an effective joint when the cross-sectional dimension of a double spring joint proves otherwise impracticable for conventional thicknesses of casing walls. The use of a single spring element 24 allows a reduction in the cross-sectional area and results in a unidirectional joint.
La figure 4 représente une autre réalisation alternative dans laquelle des saillies annulaires 30 sont ajoutées à la pointe de la partie convexe 20 et aux extrémités de la partie concave 22. Les saillies 30 s'étendent radialement pour accroître la largeur radiale totale de l'ensemble d'étanchéité. Les saillies 30 réalisent un ajustement serré ou une compression supplémentaire. Cette compression supplémentaire peut améliorer l'ajustement d'étanchéité de l'ensemble d'étanchéité dans des environnements à basse température où le corps de joint en élastomère 10 présente un coefficient d'expansion thermique plus grand que celui des composants en acier utilisés pour l'étanchéité. En ajoutant une petite quantité au remplissage du volume et à la force de compression, les saillies 30 suppriment le besoin d'accroStre la zone de la section transversale du corps du joint 10. FIG. 4 represents another alternative embodiment in which annular projections 30 are added to the tip of the convex part 20 and to the ends of the concave part 22. The projections 30 extend radially to increase the total radial width of the assembly sealing. The protrusions 30 provide a tight fit or additional compression. This additional compression can improve the seal fit of the seal assembly in low temperature environments where the elastomeric seal body 10 has a higher coefficient of thermal expansion than that of the steel components used for the sealing. By adding a small amount to the volume filling and to the compressive force, the projections 30 eliminate the need to increase the area of the joint body cross section 10.
Bien que le meilleur mode considéré pour effectuer la présente invention ait été montré et décrit ici , on comprendra que des modifications et des variations peuvent être effectuées sans s'écarter de ce qui est considéré comme l'étendue et le sujet de l'invention. Although the best mode considered for carrying out the present invention has been shown and described herein, it will be understood that modifications and variations can be made without departing from what is considered to be the scope and subject of the invention.
Claims (24)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US4759693A | 1993-04-14 | 1993-04-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2704042A1 true FR2704042A1 (en) | 1994-10-21 |
FR2704042B1 FR2704042B1 (en) | 1995-07-21 |
Family
ID=21949869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9404374A Expired - Fee Related FR2704042B1 (en) | 1993-04-14 | 1994-04-13 | FS JOINT FOR LARGE DIAMETER PIPE. |
Country Status (4)
Country | Link |
---|---|
BR (1) | BR9401476A (en) |
CA (1) | CA2121178A1 (en) |
FR (1) | FR2704042B1 (en) |
NO (1) | NO941302L (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2017507A1 (en) * | 2007-07-16 | 2009-01-21 | Tenaris Connections AG | Threaded joint with resilient seal ring |
WO2010083132A1 (en) * | 2009-01-19 | 2010-07-22 | Cameron International Corporation | Seal having stress control groove |
US8262140B2 (en) | 2008-02-29 | 2012-09-11 | Tenaris Connections Limited | Threaded joint with improved resilient seal ring |
US9120261B2 (en) | 2012-02-13 | 2015-09-01 | Cameron International Corporation | Seal molding sleeve |
US9617818B2 (en) | 2011-04-29 | 2017-04-11 | Onesubsea Ip Uk Limited | Seal having stress control groove |
US9644248B2 (en) | 2013-04-08 | 2017-05-09 | Dalmine S.P.A. | Heavy wall quenched and tempered seamless steel pipes and related method for manufacturing said steel pipes |
US9657365B2 (en) | 2013-04-08 | 2017-05-23 | Dalmine S.P.A. | High strength medium wall quenched and tempered seamless steel pipes and related method for manufacturing said steel pipes |
US9803256B2 (en) | 2013-03-14 | 2017-10-31 | Tenaris Coiled Tubes, Llc | High performance material for coiled tubing applications and the method of producing the same |
US9970242B2 (en) | 2013-01-11 | 2018-05-15 | Tenaris Connections B.V. | Galling resistant drill pipe tool joint and corresponding drill pipe |
US10844669B2 (en) | 2009-11-24 | 2020-11-24 | Tenaris Connections B.V. | Threaded joint sealed to internal and external pressures |
US11105501B2 (en) | 2013-06-25 | 2021-08-31 | Tenaris Connections B.V. | High-chromium heat-resistant steel |
US11124852B2 (en) | 2016-08-12 | 2021-09-21 | Tenaris Coiled Tubes, Llc | Method and system for manufacturing coiled tubing |
US11833561B2 (en) | 2017-01-17 | 2023-12-05 | Forum Us, Inc. | Method of manufacturing a coiled tubing string |
US11952648B2 (en) | 2011-01-25 | 2024-04-09 | Tenaris Coiled Tubes, Llc | Method of forming and heat treating coiled tubing |
US12129533B2 (en) | 2015-04-14 | 2024-10-29 | Tenaris Connections B.V. | Ultra-fine grained steels having corrosion- fatigue resistance |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8196649B2 (en) | 2006-11-28 | 2012-06-12 | T-3 Property Holdings, Inc. | Thru diverter wellhead with direct connecting downhole control |
EP2006589B1 (en) | 2007-06-22 | 2011-08-31 | Tenaris Connections Aktiengesellschaft | Threaded joint with energizable seal |
DE602007011046D1 (en) | 2007-06-27 | 2011-01-20 | Tenaris Connections Ag | Threaded connection with pressurizable seal |
DE602007013892D1 (en) | 2007-08-24 | 2011-05-26 | Tenaris Connections Ag | Threaded connector with high radial load and differently treated surfaces |
EP2028402B1 (en) | 2007-08-24 | 2010-09-01 | Tenaris Connections Aktiengesellschaft | Method for improving fatigue resistance of a threaded joint |
EP2243920A1 (en) | 2009-04-22 | 2010-10-27 | Tenaris Connections Aktiengesellschaft | Threaded joint for tubes, pipes and the like |
EP2372211B1 (en) | 2010-03-26 | 2015-06-03 | Tenaris Connections Ltd. | Thin-walled pipe joint and method to couple a first pipe to a second pipe |
US9260926B2 (en) * | 2012-05-03 | 2016-02-16 | Weatherford Technology Holdings, Llc | Seal stem |
US20180058583A1 (en) * | 2016-08-23 | 2018-03-01 | Rubberatkins Ltd. | Seal |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1009273A (en) * | 1963-05-14 | 1965-11-10 | Camillo Pasquale | Fluid-tight coupling |
US3219354A (en) * | 1962-03-28 | 1965-11-23 | Johns Manville | Pipe joint |
US3592491A (en) * | 1968-04-10 | 1971-07-13 | Hepworth Iron Co Ltd | Pipe couplings |
US4379558A (en) * | 1981-05-01 | 1983-04-12 | Utex Industries, Inc. | Anti-extrusion packing member |
DE3338899A1 (en) * | 1983-03-22 | 1984-10-04 | Friedrichsfeld Gmbh, Steinzeug- Und Kunststoffwerke, 6800 Mannheim | Sealing ring |
-
1994
- 1994-04-12 NO NO941302A patent/NO941302L/en unknown
- 1994-04-13 FR FR9404374A patent/FR2704042B1/en not_active Expired - Fee Related
- 1994-04-13 BR BR9401476A patent/BR9401476A/en not_active Application Discontinuation
- 1994-04-13 CA CA 2121178 patent/CA2121178A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3219354A (en) * | 1962-03-28 | 1965-11-23 | Johns Manville | Pipe joint |
GB1009273A (en) * | 1963-05-14 | 1965-11-10 | Camillo Pasquale | Fluid-tight coupling |
US3592491A (en) * | 1968-04-10 | 1971-07-13 | Hepworth Iron Co Ltd | Pipe couplings |
US4379558A (en) * | 1981-05-01 | 1983-04-12 | Utex Industries, Inc. | Anti-extrusion packing member |
DE3338899A1 (en) * | 1983-03-22 | 1984-10-04 | Friedrichsfeld Gmbh, Steinzeug- Und Kunststoffwerke, 6800 Mannheim | Sealing ring |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101743417B (en) * | 2007-07-16 | 2012-07-04 | 特纳瑞斯连接股份公司 | Threaded joint with resilient seal ring |
WO2009010507A1 (en) * | 2007-07-16 | 2009-01-22 | Tenaris Connections Ag | Threaded joint with resilient seal ring |
EP2017507A1 (en) * | 2007-07-16 | 2009-01-21 | Tenaris Connections AG | Threaded joint with resilient seal ring |
JP2010533827A (en) * | 2007-07-16 | 2010-10-28 | テナリス・コネクシヨンズ・アクチエンゲゼルシヤフト | Screw joint with elastic seal ring |
US8262140B2 (en) | 2008-02-29 | 2012-09-11 | Tenaris Connections Limited | Threaded joint with improved resilient seal ring |
GB2481329A (en) * | 2009-01-19 | 2011-12-21 | Cameron Internat Corp Us | Seal having stress control groove |
GB2481329B (en) * | 2009-01-19 | 2013-08-14 | Cameron Int Corp | Seal having stress control groove |
US8800648B2 (en) | 2009-01-19 | 2014-08-12 | Cameron International Corporation | Seal having stress control groove |
WO2010083132A1 (en) * | 2009-01-19 | 2010-07-22 | Cameron International Corporation | Seal having stress control groove |
US10844669B2 (en) | 2009-11-24 | 2020-11-24 | Tenaris Connections B.V. | Threaded joint sealed to internal and external pressures |
US11952648B2 (en) | 2011-01-25 | 2024-04-09 | Tenaris Coiled Tubes, Llc | Method of forming and heat treating coiled tubing |
US9617818B2 (en) | 2011-04-29 | 2017-04-11 | Onesubsea Ip Uk Limited | Seal having stress control groove |
US9120261B2 (en) | 2012-02-13 | 2015-09-01 | Cameron International Corporation | Seal molding sleeve |
US9970242B2 (en) | 2013-01-11 | 2018-05-15 | Tenaris Connections B.V. | Galling resistant drill pipe tool joint and corresponding drill pipe |
US11377704B2 (en) | 2013-03-14 | 2022-07-05 | Tenaris Coiled Tubes, Llc | High performance material for coiled tubing applications and the method of producing the same |
US9803256B2 (en) | 2013-03-14 | 2017-10-31 | Tenaris Coiled Tubes, Llc | High performance material for coiled tubing applications and the method of producing the same |
US10378075B2 (en) | 2013-03-14 | 2019-08-13 | Tenaris Coiled Tubes, Llc | High performance material for coiled tubing applications and the method of producing the same |
US10378074B2 (en) | 2013-03-14 | 2019-08-13 | Tenaris Coiled Tubes, Llc | High performance material for coiled tubing applications and the method of producing the same |
US9657365B2 (en) | 2013-04-08 | 2017-05-23 | Dalmine S.P.A. | High strength medium wall quenched and tempered seamless steel pipes and related method for manufacturing said steel pipes |
US9644248B2 (en) | 2013-04-08 | 2017-05-09 | Dalmine S.P.A. | Heavy wall quenched and tempered seamless steel pipes and related method for manufacturing said steel pipes |
US11105501B2 (en) | 2013-06-25 | 2021-08-31 | Tenaris Connections B.V. | High-chromium heat-resistant steel |
US12129533B2 (en) | 2015-04-14 | 2024-10-29 | Tenaris Connections B.V. | Ultra-fine grained steels having corrosion- fatigue resistance |
US11124852B2 (en) | 2016-08-12 | 2021-09-21 | Tenaris Coiled Tubes, Llc | Method and system for manufacturing coiled tubing |
US11833561B2 (en) | 2017-01-17 | 2023-12-05 | Forum Us, Inc. | Method of manufacturing a coiled tubing string |
Also Published As
Publication number | Publication date |
---|---|
CA2121178A1 (en) | 1994-10-15 |
NO941302D0 (en) | 1994-04-12 |
NO941302L (en) | 1994-10-17 |
BR9401476A (en) | 1994-10-18 |
FR2704042B1 (en) | 1995-07-21 |
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