WO1999008827A1 - Apparatus for amorphous bonding of tubulars - Google Patents
Apparatus for amorphous bonding of tubulars Download PDFInfo
- Publication number
- WO1999008827A1 WO1999008827A1 PCT/EP1998/005474 EP9805474W WO9908827A1 WO 1999008827 A1 WO1999008827 A1 WO 1999008827A1 EP 9805474 W EP9805474 W EP 9805474W WO 9908827 A1 WO9908827 A1 WO 9908827A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluid space
- shield gas
- outer fluid
- tubulars
- skin
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
- B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/04—Breaking emulsions
- B01D17/041—Breaking emulsions with moving devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/0061—Underwater arc welding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2931—Diverse fluid containing pressure systems
- Y10T137/3003—Fluid separating traps or vents
- Y10T137/3102—With liquid emptying means
Definitions
- This invention relates to an apparatus for amorphous bonding of tubulars .
- a technique of joining metal components known as "amorphous bonding" has been successfully utilised in the automotive industry.
- the surfaces of the components to be joined are ground into parallism.
- a foil of a metal alloy is then placed between the components which are mechanically pressed together.
- the joint is then subjected to local heating by an induction heater.
- the resulting structure is nearly metallurgically homogeneous .
- UK patent specification No. 540,519 discloses a welding device comprising a ring burner which is surrounded by an annular water cooling jacket to reduce explosion hazards during the welding process .
- European patent application No. 157131 discloses a double chambered sealing system for welding pipe end which injects inert shield gas in radial and axial directions into unsealed areas around the welding zone to prevent air contamination of said zone.
- European patent application No. 418606 discloses an amorphous bonding apparatus in which nitrogen shield gas is injected into a jacket surrounding the bonded tubular ends and also nitrogen gas is injected into the interior of the bonded tubulars to create a virtually oxygen free atmosphere in the region of the bond.
- the present invention is primarily concerned with reducing the risk of explosion while the amorphous bonding is taking place.
- an apparatus for amorphous bonding the ends of tubulars which are in substantial axial alignment and surrounded by a shield gas comprising a jacket which in use is placed around said adjacent tubular ends, said jacket having an inner skin which, in use, defines a sealed inner fluid space containing a heating element and shield gas, and an outer skin which surrounds the inner skin such that in use a sealed outer fluid space is defined between said inner and outer skin.
- said jacket is formed by two parts which are slidably mounted on a support frame and which can be urged together to form said jacket and that the inner skin is provided with fluid communication means which allow in use fluid to flow in a controlled manner from the inner fluid space into the outer fluid space or vice versa.
- the apparatus comprises means to introduce a shield gas into the inner fluid space and means to introduce water into the outer fluid space and the fluid communication means comprises a conduit which, in use, can convey said shield gas to within said outer fluid space at a selected depth between the water level in the outer fluid space so that a selected pressure difference is maintained between the inner and outer fluid spaces .
- the apparatus comprises an inlet pipe for introducing a shield gas into the outer fluid space, an orifice in the inner skin for allowing the shield gas to flow from the outer fluid space into the inner fluid space and an outlet pipe for allowing the shield gas out of the inner fluid space, wherein preferably pressure control means are provided which in use control the pressure in the inner and outer fluid space such that the pressure in the inner fluid space is higher than the ambient pressure and the pressure in the outer fluid space is higher than in the inner fluid space. In this manner a high pressure gas shield is created in the outer fluid space which prevents air to flow into the inner fluid space and hot shield gases to leak from the inner fluid space into the atmosphere.
- the apparatus further comprises a packer which in use is inserted into the interior of the tubular ends that are bonded by the apparatus, which packer comprises an elongate mandrel having a resilient packer element adjacent each end thereof, means to enable an inert shield gas to be introduced into an end of said elongate mandrel and to leave said elongate mandrel between said resilient packer elements, and means to enable water to be introduced into said end of said elongate mandrel and to leave said elongate mandrel between said resilient packer elements .
- a packer which in use is inserted into the interior of the tubular ends that are bonded by the apparatus, which packer comprises an elongate mandrel having a resilient packer element adjacent each end thereof, means to enable an inert shield gas to be introduced into an end of said elongate mandrel and to leave said elongate mandrel between said resilient packer elements, and means to enable water to be introduced into said end of said elongate
- Fig. 1 is a vertical section through an amorphous apparatus according to the present invention
- Fig. 2 shows, to an enlarged scale, a view on line II-II of Fig. 1;
- Fig. 3 shows a schematic cross-sectional view of an apparatus according to the present invention in which pressurized shield gas is injected via the outer fluid space into the inner fluid space and then vented into the atmosphere .
- amorphous bonding apparatus which is generally identified by reference numeral 101.
- the amorphous bonding apparatus 101 comprises a support frame 102 which is provided with wheels 103 which run in channels (not shown) .
- Two clamps 104 and 105 are disposed towards the bottom of the support frame 102 whilst another two clamps 106 and 107 are mounted near the top of the support frame 102 and can be displaced vertically by two piston- and-cylinder assemblies 108 and 109.
- a lower tubular 110 is secured in slips (not shown) .
- the support frame 102 is then advanced towards the lower tubular 110 and the clamps 104 and 105 secured thereto.
- An upper tubular 111 is then manoeuvred into position using an elevator or a positioning device and gripped in the clamps 106 and 107.
- the piston-and- cylinder assemblies 108 and 109 are then actuated to bring the lower end of the upper tubular 111 into close proximity to the upper end of the lower tubular 110.
- the adjacent ends of the upper and lower tubulars are then brought into substantial alignment and machined such that the adjacent ends are substantially flat and parallel to each other .
- a foil of alloy is placed on the upper surface of the lower tubular 110 and the upper tubular 111 is urged downwardly by the piston and cylinder assemblies 108, 109 with a predetermined pressure which varies according to the composition of the tubulars and the composition of the foil.
- the sealable heating apparatus 112 is mounted on the tubulars straddling the foil.
- the sealable heating apparatus 112 comprises two halves 113 and 114 which can be advanced and retracted by hydraulic rams .
- the half 112 can be advanced and retracted by hydraulic rams 115 whilst the half 113 can be advanced and retracted by hydraulic rams 116.
- the half 113 comprises an inner skin 117 and an outer skin 118 which define an outer fluid space 119 therebetween.
- the faces of the inner skin 117 and the outer skin 118 are each provided with resilient seals 120 which engage on sealing surfaces on the half 114 and together define a jacket which surrounds the lower tubular 110 and the upper tubular 111.
- the resilient seals 120 also extend around the lower tubular 110 and the upper tubular 111 respectively.
- the halves 113 and 114 are then moved into position either side of the tubulars 110, 111 and pressed together with the hydraulic rams so as to form an inner chamber 121 enclosed by the inner skin 117.
- the two halves 113 and 114 are then fastened together with six mechanical fasteners (not visible) to ensure that the halves do not inadvertently come apart.
- the outer fluid space 119 is then filled with water (H2O) from inlet pipe 122.
- the water fills the outer fluid space 119 and leaves through outlet pipe 123.
- the water is continually pumped through the outer fluid space 119 and its presence is detected by a sensor 124 which is designed to inhibit the remainder of the process if no water is present or the temperature of the water exceeds a predetermined temperature.
- the outer fluid space 119 can be emptied via drain line 125.
- An emergency water tank 126 and emerging water supply 127 are provided so that the outer fluid space 119 can be deluged with water in an emergency, for example catastrophic failure of a seal resulting in loss of water from the outer fluid space 119.
- the inner fluid space or chamber 121 is cooled by a flow of shield gas which is introduced through a manifold 128 situated below an induction heating ring 129.
- the shield gas is supplied via gas supply pipe 130 which is, in turn, connected to a source of compressed air via air line 131 and a source of argon shield gas via argon line 132.
- the inner chamber 121 is also provided with two gas exit pipes 133, 134 which are connected to an exit manifold 135.
- the exit manifold 135 is connected to an argon flushing line 136 and a line 153 which opens into the outer fluid space 119 well below outlet pipe 123.
- a sampling pipe 137 is provided to allow samples of gas from within the inner chamber 121 to be continually taken and analysed.
- the induction heating ring 129 is independently water (H2O) cooled by a water supply which is pumped through inlet pipe 138 and leaves through outlet pipe 139.
- the induction heating ring 129 is provided with power via heavy metal conduits which are symbolised by wires 140 and 141.
- an internal packer 142 is lowered down the upper tubular 111.
- the purpose of the internal packer 142 is threefold, viz:-
- the internal packer 142 comprises an elongate mandrel 143 with a resilient packer element 144, 145 at each end thereof.
- Each resilient packer element 144, 145 is connected to a source of pressurized water via packer element control line 146.
- packer element control line 146 When pressurized water is supplied through packer element control line 146 both the packer elements 144, 145 expand and form a seal between the elongate mandrel 143 and the upper tubular 111 and lower tubular 110 respectively thereby forming an isolated chamber 147.
- the centre of the elongate mandrel 143 is provided with an elongate bore 148 which is connected to a water (H2O) inlet tube 149 and is provided with a multiplicity of radial outlet tubes 150 which open into the isolated chamber 147.
- An argon supply pipe 151 also passes downwardly through the elongate mandrel 143 and opens into the isolated chamber 147 immediately above the resilient packer element 145.
- the inner chamber 121 is purged with air for a fixed time and in any event until the gas sampled through the safety device 137 does not record an unacceptable level of hydrocarbons .
- the air supply is switched off and argon is passed through the inner chamber 121 to form an atmo- sphere of argon shield gas to the outside of the joint.
- the isolated chamber 147 is purged by the introduction of argon shield gas through argon supply pipe 151.
- the argon purges the isolated chamber 147 and leaves via an outlet tube (not visible) .
- a sensor in the outlet tube checks the argon content of the gas passing through the outlet tube and inhibits activation of the induction heating ring 129 until the gas passing through the outlet tube is substantially pure argon.
- Air is also introduced into the upper tubular 111 via pipe 152 to purge any combustible gases from inside the upper tubular.
- argon is pumped through the inner chamber 121 and the isolated chamber 147 throughout the heating process. Furthermore, air is pumped through the pipe 152. The argon which leaves the inner chamber 121 via gas exit pipes 133, 134 is directed through line 153 by closing valves 154 and opening 155. The argon bubbles through the water and is cooled thereby before venting into the atmosphere. Furthermore, the pressure of argon in the inner chamber 121 can be controlled by varying the depth of the outlet of the line 153 below the water level. This provides a simple and effective method of controlling the pressure in the inner chamber 121.
- the halves 113 and 114 are then withdrawn. Only when it is determined that it is safe to do so is the water supply to the packer 142 via water inlet pipe 149 terminated. The resilient packer elements 144, 145 are then deflated and the packer 142 withdrawn.
- the tubulars 110 are then released from the clamps 104, 105 106, 107 and the amorphous bonding apparatus 101 rolled back.
- the joint is then tested. If the test is successful the tubulars are lifted to enable the slips to be re- leased and lowered into the hole. The slips are then applied and the process repeated.
- an inert shield gas such as nitrogen could be circulated through the outer fluid space 119 instead of water.
- an inert shield gas such as nitrogen could be circulated through the outer fluid space 119 instead of water.
- the resilient packer element 144 but not the resilient packer element 145) could be released prior to the introduction of cooling water. This would allow any steam found to rapidly escape and further purge the inside of the upper tubular.
- FIG. 3 an amorphous bonding heating coil is identified by reference numeral 1.
- the amorphous bonding heating coil 1 surrounds a tubular 110 and is surrounded by a jacket enclosure 2 having a first half 3 and a second half 4.
- Each half 3, 4 comprises an inner skin 7 and an outer skin 8 defining an annular outer space 9 therebetween.
- the halves 3 and 4 are provided with seals which interengage when the halves 3 and 4 are clamped together and which are intended to form the sealed jacket enclosure 2.
- seals which interengage when the halves 3 and 4 are clamped together and which are intended to form the sealed jacket enclosure 2.
- an inlet pipe 6 conveys inert shield gas into the annular outer space 9 between the inner skin 7 and the outer skin 8.
- the annular outer fluid space 9 is maintained at a pressure PI which is slightly greater than the ambient pressure P0.
- An orifice 10 allows part of the inert shield gas to pass into an inner fluid space 11 inside the inner skin 7.
- the inert gas can then pass from the inner fluid space 11 to an isolated outlet pipel2 via an orifice 13 which is set to maintain the pressure P2 in the chamber 11 between PI and P0.
- cool inert gas is passed through inlet pipe 6. Part of the cool inert gas passes into the annular outer fluid space 9 whilst the balance flows through the inner fluid space 11 via orifice 10 and orifice 13.
- the induction heater 1 When the induction heater 1 is operational the inert gas in the inner fluid space 11 is heated and the heated inert gas leaves via insulated outlet pipe 12 which vents to atmosphere in a safe area optionally after being indirectly cooled.
- inlet pipe 6 and the orifice 10 could be disposed to help ensure that the annular outer fluid space 9 is constantly replenished with cool inert gas, thus reducing the possibility of small pockets of hot inert gas accumulating in the outer fluid space 9.
- inlet pipes 6 and several orifices 10 could be provided.
- orifices 10 and 13 could be formed by adjustable valves or pressure relief valves .
- flow and temperature sensors may be provided which are arranged to stop the amorphous bonding process and drench the entire area with water if a signal is detected indicative of a major leak.
- Such sensors could comprise flow sensors in the inlet pipe 6 and the insulated outlet pipe 12.
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Pipe Accessories (AREA)
- Laminated Bodies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002301671A CA2301671C (en) | 1997-08-19 | 1998-08-19 | Apparatus for amorphous bonding of tubulars |
EP98948880A EP1007265B1 (en) | 1997-08-19 | 1998-08-19 | Apparatus for amorphous bonding of tubulars |
US09/485,546 US6288373B1 (en) | 1997-08-19 | 1998-08-19 | Apparatus for amorphous bonding of tubulars |
EA199900412A EA001073B1 (en) | 1997-08-19 | 1998-08-19 | Apparatus for amorphous bonding of tubulars |
DE69810308T DE69810308T2 (en) | 1997-08-19 | 1998-08-19 | DEVICE FOR AMORPHOUSLY CONNECTING TUBES |
AT98948880T ATE229864T1 (en) | 1997-08-19 | 1998-08-19 | DEVICE FOR AMORPHOUSLY CONNECTING PIPES |
BR9811233-3A BR9811233A (en) | 1997-08-19 | 1998-08-19 | Equipment for amorphous connection of tubular ends |
NZ502394A NZ502394A (en) | 1997-08-19 | 1998-08-19 | Apparatus for amorphous bonding of tubulars especially during construction of oil and gas wells characterised by the tubulars are axial in alignment and surrounded by a shield gas |
AU95344/98A AU738025B2 (en) | 1997-08-19 | 1998-08-19 | Apparatus for amorphous bonding of tubulars |
NO20000797A NO20000797L (en) | 1997-08-19 | 2000-02-18 | Device for amorphous bonding of pipe elements |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9717440.3 | 1997-08-19 | ||
GBGB9717440.3A GB9717440D0 (en) | 1997-08-19 | 1997-08-19 | |
GB9805661.7 | 1998-03-17 | ||
GBGB9805661.7A GB9805661D0 (en) | 1998-03-17 | 1998-03-17 | Enclosure for use in the amorphous bonding of tubulars |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999008827A1 true WO1999008827A1 (en) | 1999-02-25 |
Family
ID=26312082
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/005474 WO1999008827A1 (en) | 1997-08-19 | 1998-08-19 | Apparatus for amorphous bonding of tubulars |
Country Status (15)
Country | Link |
---|---|
US (1) | US6288373B1 (en) |
EP (1) | EP1007265B1 (en) |
CN (1) | CN1107568C (en) |
AR (1) | AR013429A1 (en) |
AT (1) | ATE229864T1 (en) |
AU (1) | AU738025B2 (en) |
BR (1) | BR9811233A (en) |
CA (1) | CA2301671C (en) |
DE (1) | DE69810308T2 (en) |
EA (1) | EA001073B1 (en) |
ID (1) | ID24455A (en) |
NO (1) | NO20000797L (en) |
NZ (1) | NZ502394A (en) |
OA (1) | OA11323A (en) |
WO (1) | WO1999008827A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7140454B2 (en) | 2001-07-06 | 2006-11-28 | Shell Oil Company | Well drilling bit |
US7712522B2 (en) | 2003-09-05 | 2010-05-11 | Enventure Global Technology, Llc | Expansion cone and system |
US7819185B2 (en) | 2004-08-13 | 2010-10-26 | Enventure Global Technology, Llc | Expandable tubular |
US7886831B2 (en) | 2003-01-22 | 2011-02-15 | Enventure Global Technology, L.L.C. | Apparatus for radially expanding and plastically deforming a tubular member |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MY128610A (en) * | 2001-12-31 | 2007-02-28 | Shell Int Research | Method for interconnecting tubulars by forge welding |
WO2003074917A1 (en) * | 2002-03-01 | 2003-09-12 | Shell Internationale Research Maatschappij B.V. | Pipe system and method for its manufacture |
EA008322B1 (en) * | 2002-07-25 | 2007-04-27 | Шелл Интернэшнл Рисерч Маатсхаппий Б.В. | Forge welding of tubulars |
JP5315000B2 (en) * | 2008-10-23 | 2013-10-16 | ホシザキ電機株式会社 | Steam generator |
CA2753573C (en) * | 2009-02-25 | 2015-08-11 | Weatherford/Lamb, Inc. | Pipe handling system |
CN101987396B (en) * | 2009-07-31 | 2014-02-19 | 鸿富锦精密工业(深圳)有限公司 | Zirconium-based bulk amorphous alloy laser welding method and welding structure |
WO2016106206A1 (en) * | 2014-12-23 | 2016-06-30 | Shell Oil Company | Plug apparatus and method |
CN114654087B (en) * | 2022-03-21 | 2023-07-04 | 中建安装集团有限公司 | Laser welding equipment for inflammable and explosive medium conveying pipeline |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3581042A (en) * | 1969-06-19 | 1971-05-25 | Ocean Systems | Underwater welding method |
US4139758A (en) * | 1976-01-12 | 1979-02-13 | Pinfold Brian E | Method of arc welding under water |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0803313A3 (en) * | 1996-04-23 | 2000-01-12 | Daido Tokushuko Kabushiki Kaisha | Method and apparatus for diffusion bonding |
BR9807540A (en) * | 1997-02-04 | 2000-02-08 | Shell Internationale Reserarch | Process and device for joining well pipes, and, process and device for joining oil field pipes. |
JP2000061654A (en) * | 1998-08-19 | 2000-02-29 | Daido Steel Co Ltd | Vertical diffusion welding equipment |
-
1998
- 1998-08-19 AT AT98948880T patent/ATE229864T1/en not_active IP Right Cessation
- 1998-08-19 BR BR9811233-3A patent/BR9811233A/en not_active Application Discontinuation
- 1998-08-19 WO PCT/EP1998/005474 patent/WO1999008827A1/en active IP Right Grant
- 1998-08-19 EA EA199900412A patent/EA001073B1/en not_active IP Right Cessation
- 1998-08-19 ID IDW20000315D patent/ID24455A/en unknown
- 1998-08-19 NZ NZ502394A patent/NZ502394A/en unknown
- 1998-08-19 US US09/485,546 patent/US6288373B1/en not_active Expired - Fee Related
- 1998-08-19 DE DE69810308T patent/DE69810308T2/en not_active Expired - Fee Related
- 1998-08-19 EP EP98948880A patent/EP1007265B1/en not_active Expired - Lifetime
- 1998-08-19 CN CN98808317A patent/CN1107568C/en not_active Expired - Fee Related
- 1998-08-19 AR ARP980104088A patent/AR013429A1/en active IP Right Grant
- 1998-08-19 CA CA002301671A patent/CA2301671C/en not_active Expired - Fee Related
- 1998-08-19 AU AU95344/98A patent/AU738025B2/en not_active Ceased
-
2000
- 2000-02-18 OA OA1200000046A patent/OA11323A/en unknown
- 2000-02-18 NO NO20000797A patent/NO20000797L/en not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3581042A (en) * | 1969-06-19 | 1971-05-25 | Ocean Systems | Underwater welding method |
US4139758A (en) * | 1976-01-12 | 1979-02-13 | Pinfold Brian E | Method of arc welding under water |
Non-Patent Citations (1)
Title |
---|
C R YEMINGTON: "Underwater NDE beyond diver depths", WELDING JOURNAL, vol. 69, no. 8, August 1990 (1990-08-01), miami ( USA ), pages 63 - 65, XP000140428 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7140454B2 (en) | 2001-07-06 | 2006-11-28 | Shell Oil Company | Well drilling bit |
US7886831B2 (en) | 2003-01-22 | 2011-02-15 | Enventure Global Technology, L.L.C. | Apparatus for radially expanding and plastically deforming a tubular member |
US7712522B2 (en) | 2003-09-05 | 2010-05-11 | Enventure Global Technology, Llc | Expansion cone and system |
US7819185B2 (en) | 2004-08-13 | 2010-10-26 | Enventure Global Technology, Llc | Expandable tubular |
Also Published As
Publication number | Publication date |
---|---|
US6288373B1 (en) | 2001-09-11 |
AR013429A1 (en) | 2000-12-27 |
EP1007265B1 (en) | 2002-12-18 |
OA11323A (en) | 2003-10-27 |
NO20000797D0 (en) | 2000-02-18 |
BR9811233A (en) | 2000-08-15 |
AU9534498A (en) | 1999-03-08 |
CA2301671A1 (en) | 1999-02-25 |
DE69810308T2 (en) | 2003-08-14 |
NO20000797L (en) | 2000-02-18 |
CN1267245A (en) | 2000-09-20 |
CN1107568C (en) | 2003-05-07 |
EP1007265A1 (en) | 2000-06-14 |
EA001073B1 (en) | 2000-10-30 |
EA200000234A1 (en) | 2000-08-28 |
ATE229864T1 (en) | 2003-01-15 |
NZ502394A (en) | 2001-08-31 |
ID24455A (en) | 2000-07-20 |
DE69810308D1 (en) | 2003-01-30 |
CA2301671C (en) | 2007-10-30 |
AU738025B2 (en) | 2001-09-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU728704B2 (en) | Method and device for joining oilfield tubulars | |
EP1007265B1 (en) | Apparatus for amorphous bonding of tubulars | |
US8794675B2 (en) | Coaxial pipe element | |
US20080302539A1 (en) | Method and apparatus for lengthening a pipe string and installing a pipe string in a borehole | |
NO311149B1 (en) | Method and apparatus for testing wells using coaxial double coiled tubing and sludge sludge | |
FR2757209A1 (en) | SHUTTERING DEVICE AND METHOD FOR WELL TUBING | |
US20100018700A1 (en) | Laminate Pressure Containing Body for a Well Tool | |
WO1998033619A1 (en) | Method and device for joining oilfield tubulars | |
UA81125C2 (en) | Improved method for forge welding and tubulars made by this method | |
EP0396204B1 (en) | Method and device for joining well tubulars | |
AU567774B2 (en) | A method for joining tubular parts of metal by forge/ diffusion welding | |
MXPA00001446A (en) | Apparatus for amorphous bonding of tubulars | |
OA11188A (en) | Method and device for joining oilfield tubulars. | |
NO335034B1 (en) | Pipe welding | |
US4577488A (en) | Apparatus and method for inspecting welds | |
MXPA99006748A (en) | Method and device for joining oilfield tubulars | |
WO2016106206A1 (en) | Plug apparatus and method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 98808317.5 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM HR HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1998948880 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 502394 Country of ref document: NZ |
|
WWE | Wipo information: entry into national phase |
Ref document number: 95344/98 Country of ref document: AU |
|
WWE | Wipo information: entry into national phase |
Ref document number: PA/a/2000/001446 Country of ref document: MX |
|
WWE | Wipo information: entry into national phase |
Ref document number: 09485546 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2301671 Country of ref document: CA Ref document number: 2301671 Country of ref document: CA Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200000234 Country of ref document: EA |
|
WWP | Wipo information: published in national office |
Ref document number: 1998948880 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWG | Wipo information: grant in national office |
Ref document number: 95344/98 Country of ref document: AU |
|
WWG | Wipo information: grant in national office |
Ref document number: 1998948880 Country of ref document: EP |