WO2006067740A1 - Raccord tubulaire pre-charge - Google Patents

Raccord tubulaire pre-charge Download PDF

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Publication number
WO2006067740A1
WO2006067740A1 PCT/IB2005/054331 IB2005054331W WO2006067740A1 WO 2006067740 A1 WO2006067740 A1 WO 2006067740A1 IB 2005054331 W IB2005054331 W IB 2005054331W WO 2006067740 A1 WO2006067740 A1 WO 2006067740A1
Authority
WO
WIPO (PCT)
Prior art keywords
members
load
bearing surfaces
connector according
pin
Prior art date
Application number
PCT/IB2005/054331
Other languages
English (en)
Inventor
Philippe Nobileau
Original Assignee
Philippe Nobileau
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
Priority claimed from FR0413880A external-priority patent/FR2880097B1/fr
Application filed by Philippe Nobileau filed Critical Philippe Nobileau
Priority to CA002591391A priority Critical patent/CA2591391A1/fr
Publication of WO2006067740A1 publication Critical patent/WO2006067740A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02—Subsoil filtering
    • E21B43/10—Setting of casings, screens, liners or the like in wells
    • E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
    • E21B43/106—Couplings or joints therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02—Subsoil filtering
    • E21B43/10—Setting of casings, screens, liners or the like in wells
    • E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
    • 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
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
    • F16L13/147—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by radially expanding the inner part
    • 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
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/001—Screw-threaded joints; Forms of screw-threads for such joints with conical threads
    • F16L15/004—Screw-threaded joints; Forms of screw-threads for such joints with conical threads with axial sealings having at least one plastically deformable sealing surface

Definitions

  • This invention concerns sealed connections of pipe joints notably for use in oil and gas wells.
  • casing string comprising joints of pipe, made-up on the drilling floor while running, are usually lowered into the well.
  • connector sealing is usually of the metal- to-metal type.
  • it is preferable to prevent play in the connector by preloading it to avoid possible parting while lowering the casing string into the well and also to increase fatigue performance during service.
  • Connectors to connect the joints are generally of the threaded type of at least one couple of cooperating pin and box members which requires during their make-up, the rotation of one of the joints with regards to the others.
  • This type of threaded connector exhibits few major problems.
  • the need to make a metal-to-metal seal and deliver a tight connector require relative rotation of the loaded load-bearing surfaces and sealing surfaces of both pipe joints. Due to potential galling, the use of some materials for the pipe joints and connector members present difficulties and sometimes incompatibilities.
  • the quality of the seal is affected by small defects such as a local damaging of thread or shoulder which can occur during pipe joint handling.
  • Another disadvantage of threaded connectors comes from the fact that connecting member machining is comparatively long and costly because the helical threads are obtained by threading which is a much slower operation than simple turning.
  • the object of the present invention is to provide a new type of sealed tubular connector, by the make-up of at least one couple of cooperating pin and box members, alleviating the disadvantages previously described, for connecting tubular joints or folded pipe joints, particularly:
  • the cooperating load flanks of the made-up pin and box members are preloaded by shortening the length of the box member, in the plastic range. This crushing allows in a simple and quick manner the elimination of all the clearances and plays in the connector without the need of high precision geometry for the members and even in the case the members have been slightly damaged. Also, the preloading of load flanks maintains the metal-to-metal seal during installation and improve fatigue resistance during service.
  • Another advantage of the invention is the preloading of sealing surfaces without substantial sliding. This prevents potential galling problems permitting the use of a broader range of materials, notably those more susceptible to resist certain type of corrosion.
  • the engagement of the load flank surfaces can be performed by threading. In this case, the load flank carrying the string weight and handling the tension are of helicoidal shape.
  • the engagement of the load- bearing surfaces, prior to preloading can be done by elastic separation between cooperating members. Separation is done by expansion of the box member and shrinking of the pin member obtained by contact of the tapered stabbing flanks of threads or circular grooves located on the outside of the pin member and on the inside of the box member.
  • the configuration according to the present invention has the advantage to permit connection to be made with a folded connector of axially folded pipe joints.
  • the makeup on the drilling floor is no more complex, nor more time consuming than a conventional connection of tubular pipe joints.
  • Another advantage of this connector is that the preloading and sealing integrity are maintained during the entire unfolding of the pipes and connectors in the well which is performed by either applying internal pressure to the string and/or by mechanical expansion.
  • the opposed load flank and compression shoulder surfaces can form a dovetail-shaped engagement in order that once preloaded, it resists radial separation of the connecting member walls. This feature is particularly useful during the unfolding of folded connectors.
  • FIG. IA is a schematic axial section view of a connector according to the invention prior to preloading.
  • FIG. IB is a schematic axial section view of a connector according to the invention after preloading.
  • FIG. lBbis is an enlarged view of Figure IB illustrating more particularly the preloading actuation.
  • FIGs. 2 A, 2B and 2C are section and perspective views of a connector according to the invention, of the coupling type, with helicoidal tension load flank, before engagement of the load flank in the respective states: before threading, after threading and preloaded.
  • Figs. 2Bbis and 2Cbis are enlarged views of the respective Figures 2B and 2C.
  • FIGS. 3A, 3B and 3C are section and perspective views of a connector according to the invention, of the coupling type with rotationless axial stabbing in the respective states: before engaging the cooperating load-bearing surfaces, after engaging the cooperating load-bearing surfaces and preloaded.
  • Figs. 3Abis, 3Bbis and 3Cbis are enlarged views of the respective Figures 3A, 3B and 3C.
  • Figs. 4A, 4B; 4C and 4D are section and perspective views of a connector according to the invention, of the folded pipe joint type, in the respective states: radially separated load flank and compression shoulder, engaged load flank and shoulder, preloaded load flank against shoulder.
  • Fig. 3A, 3B and 3C are section and perspective views of a connector according to the invention, of the folded pipe joint type, in the respective states: radially separated load flank and compression shoulder, engaged load flank and shoulder, preloaded load flank against shoulder.
  • FIG. 5 is a section and perspective view illustrating the component stack up order of a connector according to the invention of the coupling type to connect two axially folded pipe joints.
  • Fig. 6 is a radial section view showing the running of a pipe joint and its connector axially folded inside a joint of an already unfolded pipe.
  • Fig. 7 is a section and perspective view of a folded pipe including a connector according to the invention of the coupling type going down through a casing of the same dimension, previously installed and unfolded.
  • Figs. 8A in 8D are section views of a connector's wall according to the invention such as represented on Figures 5 to 7 illustrating the running sequence.
  • Fig. 8A in 8D are section views of a connector's wall according to the invention such as represented on Figures 5 to 7 illustrating the running sequence.
  • FIG. 9 is a perspective view of the connector make-up tool as shown on Figure 5, the vertical cylinder bodies having been removed for clarity.
  • Fig. 10 is a top view of the make-up tool which left and right half views showing respectively before and after radial engagement of the coupling.
  • Fig. 11 is a radial section view of the handling tool for the folded pipe joint.
  • Fig. 12 is a perspective view of the handling tool for folded pipe joint illustrating its installation on the pipe end when it is horizontal
  • Fig. 13 is a perspective view of the handling tool and the make-up tool as configured on the drilling floor during the running in of the string.
  • Figs. 14 and 15 are section and perspective views of a connector according to the invention of the axial stabbing type with only a single couple of pin and box members to connect two folded pipe joints.
  • the connector principle in reference to Figs. IA, IB and lBbis, consists in mating at least one couple of pin member 4 and box member 3.
  • One of the essential features of the invention is the way the load flanks, handling the tension, and the compression shoulder are pre-loaded.
  • the tension load flank 5 and 9 and the compression shoulder 10 and 13 are first engaged with clearance and without large load except the weight of the joint (Fig. IA).
  • the jaws 6, engaged the grooves 7 on the external surface of the box member 3 apply axial compression to the circumferential portion 12 so that it shortens plastically from dimension 15 to dimension 16 (Fig. IB and lBbis).
  • the dimension 24 is longer than the dimension 16.
  • the portion of the pin member put in compression through the load-bearing surfaces 5, 9, 10 and 13 is subjected to a lesser percentage of elongation than the portion 12 of the box member located between the jaws, and as a result of that, after relaxing the force on the jaws, the portion 12 has been more plastically shortened in percentage than the portion 8 of the pin member. If the plastic reduction of length 17 of the box member is greater to the sum of initial gaps between the opposite load-bearing surfaces, the connector will retain some preload with a compression in the pin member 4 balanced by a tension in the box member 3.
  • the same result can be achieved by using different material, having different yield, instead of different lengths of the portion 12 and 8.
  • the sealing surface 10 comprises a conical face 11 where strong contact pressure, by loading in hoop stress the connecting members, is applied to achieve a reliable metal-to-metal seal.
  • the coupling 21 includes two box members 3 and 18 cooperating respectively with the pin members 4 and 19 of both pipe joints 1 and 2 to be connected.
  • the box member 18 Prior to preloading (Fig 2A), the box member 18 is loosely screwed on the pin member 19 by engaging the helicoidal threads.
  • the pin member 4 of the joint 2 is then engaged in the same way in box member 3 of the coupling 21, until all load-bearing surfaces are face to face with clearance (Fig 2B and 2Bbis).
  • the central portion of the coupling 21 (Fig 2C and 2Cbis) is then shortened.
  • This portion consists of two thinner zones 12 which will concentrate most of the plastic deformation and a thicker zone supporting a centralizing seal surface 20 coming in contact with the compression shoulders 10 of the pin members to equalize the plastic deformation of both portions 12.
  • the compression shoulder of the pin member includes a conical face 11 where strong contact pressure, by loading in hoop stress the connecting members, is applied to achieve a reliable metal-to-metal seal.
  • the invention discloses the use of a connector of the coupling type of which one set of connecting members is stabbed axially by elastic radial deformation.
  • This couple of pin member 4 and box member 3 includes several groove type tension load flanks 5 and 9 of small engagement separated by stabbing flanks 25.
  • the coupling 21 is first screwed loosely on the pin member 19 of the pipe joint 1 until bottomed by the centralizing ring 20.
  • the pin member 4 is then stabbed axially on the box member 3 of the coupling 21 so that the stabbing flanks 25 come in contact (Figs 3A and 3Abis).
  • the upper box member of the coupling 21 is then shortened in the plastic range at the level of the thinner portion 12 to achieve adequate preloading of all the load-bearing surfaces, including the load- bearing surfaces of the couple of lower connecting members 18 and 19 (Fig. 3C and 3Cbis).
  • the preloaded inverted slope of the compression shoulders 10 and 13 provides sealing and prevents the radial separation of the connecting member's walls during all the phases of unfolding to come.
  • the pipe joints 22 and 23 as well as the connector are then plastically unfolded either by application of an internal pressure 27 (Fig. 4D) or by forcing a mechanical opening tool.
  • the connection can then be expanded slightly, to enhance its roundness and in consequence its resistance to external pressure, by displacement of an expansion mandrel having circular sections.
  • Fig. 5 illustrates the stack-up order of components delivering an advantageous embodiment of the invention with a coupling to connect two joints of axially folded pipe 22 and 23.
  • the pin members 4 of the pipe joints include zones of tension load flanks 9 separated by longitudinal zones of reduced thickness 30 which act as axial hinges for folding/unfolding connecting members.
  • the compression end face 10 of pin member 4 includes a sealing gasket groove 33 to receive a seal gasket also folded with a diamond-shaped section 31.
  • the coupling 21, illustrated in its pre-folded shape before make-up, includes on its internal surface cooperating load flanks 5 to the load flanks 9 and includes on its external surface grooving 7 for receiving the jaws separated by longitudinal zones 35 of reduced thickness which act as axial hinges for folding/unfolding the members.
  • Coupling 21 includes on the end of its two box members, a recess 34 to receive the locking band 32 after make-up. Machining of the profiles of member 3 and 4 on the ends of the pipe joint will preferably be made by machine turning before folding the joint. During folding, load flanks 5 cooperating load flank 9 will be undeformed, due to the presence of the longitudinal zones 35 of reduced thickness. After folding of the joint at the pipe mill, a heat treatment can be performed to relax folding stresses and regain maximum material elongation performance for the downhole unfolding step.
  • FIGs 8A to 8D illustrate, with axial sections, the sequence of connecting two joints of pipe 22 and 23 using the connector of the coupling type, such as represented in Fig. 5, made of materials with identical performances.
  • the first step of the connection is the radial engagement of the coupling 21 by radial displacement of the compression jaws 6 engaging in the mean time the groovings 7 of the coupling (Fig. 8A) so that the co- operating load flanks 5 and 9 of the connecting members are facing one another loosely in the axial direction (Fig. 8B).
  • the jaws 6 allow to apply, via the groovings 7, a strong axial compression force at the level of the peripheral portion 12 which reduces the length 15 to a length 16, in the plastic range, creating a pre-load between the load flanks 9 and 5 against the compression shoulder 10 and the conical seal 31 (Fig. 8C).
  • a strong axial compression force at the level of the peripheral portion 12 which reduces the length 15 to a length 16, in the plastic range, creating a pre-load between the load flanks 9 and 5 against the compression shoulder 10 and the conical seal 31 (Fig. 8C).
  • the pre-loading is made possible by the fact that the length 50 of portion 8 is greater than the length 15 of portion 12.
  • the cooperating load flanks 5 and 9 have inverted slopes (Fig. 8B bis) so that once preloaded, they resist radial separation of the member's walls.
  • the walls of cooperating members are therefore forced to stay in contact during unfolding and expansion of the connector despite a possible limited relative peripheral sliding of the cooperating load- bearing surfaces.
  • the pre-loading against the compression shoulder 10 and the tapered section seal gasket 31 allows to maintain a good seal between the connector's members during all the installation, the reinflation and the possible additional expansion phases downhole.
  • the locking bands 32 are engaged in their respective recesses 34 to contain the radial elastic springback and to further prevent any unsnapping of the folded connector during the whole string running.
  • the make-up tool 61 used for connecting the pipe joints with a connector of coupling type such as represented in Figs. 5 to 8, comprises an upper sub-assembly 68 and a lower sub-assembly 67 able to move vertically closer by the action of both cylinders 55 and cylinder 54.
  • each of the sub-assemblies 67 and 68 of the make-up tool 61 includes a convex front part 58 and a cup-shaped back part 59 which can move horizontally closer by action of cylinders 62.
  • the relative horizontal translation close together of parts 58 and 59 of the tool is used for the first step of radial deformation of the coupling 21 in order to engage face to face, in the axial direction, the cooperating load-bearing surfaces.
  • the relative vertical translation of sub-assembly 67 and 68 of the tool is then used for the step of plastic reduction of the length of the coupling 21.
  • the invention anticipates the use of four cylinders 60 of 33,000 lbs (15,000 daN) force for relative horizontal translation and two cylinders 55 and a cylinder 54 of 180,000 lbs (80,000 daN) and 290,000 lbs (130,000 daN) of respective forces.
  • the force transmission between the tool and the coupling 21 is done by jaws 64 and 66 carried by the cup-shaped parts 59 of the tool and by jaws 65 carried by the convex part 58 of the tool. These jaws feature cooperating grooving to grooving 7 of the coupling 21 to allow to transmit axial forces without slippage.
  • the funnel 70 is used during make-up for easy docking of the lower pin member of the added joint into the pre-folded coupling 21.
  • the handling tool 88 is used for handling the joints and lowering the string into the well.
  • the cup-shaped internal face of part 80 of the handling tool 88 allows transmission by friction of the axial force which is applied on the pipe joint 22 due to its own weight and the complete weight of the string in which the joint will be connected.
  • the multiple wedge slip 81 is forced onto the bottom of the internal fold of pipe joint 22 by riding the ramps 86 of the top convex part 83 so that the contact pressure of the multiple wedge slip 81 onto the joint 22 augments with the downward axial force applied on the joint 22 by the string weight. This is possible because axial folding of the casing allows to put in contact two diametrically opposed internal portions of internal surface.
  • the handling tool 88 includes a head 82 to provide an interface with conventional derrick drill pipe handling tools.
  • the handling tool 88 includes a lift ring 84 which allows its easy installation on pipe joints when in horizontal position on the pipe rack.
  • the handling tool 88 allows to lift the entire casing string weight and lower it to a length equal to one pipe joint length.
  • the spider 85 Prior to connecting a new pipe joint, the spider 85 (of which only the top part is shown) takes by friction the weight of the whole string with the same principle of wedge action than the handling tool 88. The handling tool 88 is then released to pick-up the next pipe joint.
  • the spider 85 and the make-up tool 61 articulated on its stand 87 can be removed if needed to clear the well axis area.
  • the connector linking two joints of folded pipe such as illustrated on Figs. 5 to 8, has members easily manufactured by machine turning to generate the load-bearing surfaces when the pipe joints and the coupling are tubular. Once machine turned, members are milled to create thinner longitudinal axial zones 35 and 30 as illustrated on Fig. 5. The pipe joints and the coupling are then folded at the manufacturing plant. Members are folded with big precision easily reproducible due to the hinges created by the thinner zones 30 and 35. It is then possible, prior to delivery from the manufacturing plant, to perform a heat treatment of the pipe joints and coupling so as to optimize the performances of the material having withstanded a strong plastic deformation during the folding step.
  • the pipe joint connector of the invention will allow a rapid introduction of the technology of drilling and casing in monodiameter by folding, unfolding and expanding a casing string made of 40 footer joints prior to the introduction of continuous spooled folded casing and will offer drillers a high collapse performance casing from the thicker wall over diameter ratio than the one that could be installed in a monodiameter well with only the expansion technology.
  • the man skilled in the art will be able to appreciate that the invention is not restricted to the specifics of the previous description, so that a certain number of alternatives could be added within the scope of the invention.
  • the pipe joints can be segments, lengths, etc. of casing, tubing, etc.
  • Figs. 14 and 15 represent, as an example, a connector including a single couple of members pin-box 3 and 4 to connect two folded joints of pipe 22 and 23. Prior to making-up the connection, the pin member 4 is more folded than the box member 3 so that they can stab freely. The box member is then wrapped on the pin member to place the cooperating load-bearing surfaces face to face, then crushed axially to pre-load them.
  • the preloading of a connector is done by axially stretching in the plastic range a portion of at least one of the connector member that will be in compression when the axial stretching force is released and in the absence of other load, or/and by axially shortening in the plastic range a portion of at least one of the connector member that will be in tension when the axial shortening force is released and in the absence of other load.
  • the portion to be deformed in the plastic range can be heated and, in the case of plastic shortening deformation, at least part of the preload can be obtained from the cooling of such portion.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne un raccord tubulaire préchargé destiné à raccorder de manière étanche deux joints de tuyaux possédant un axe commun. Ledit raccord comporte au moins une paire d'éléments à filetage femelle et mâle possédant des surfaces porteuses conçues pour transmettre les forces de tension et de compression axiale. Il comprend également un moyen conçu pour appliquer, après la mise en prise des éléments, une force axiale suffisante sur au moins un des éléments, pour modifier dans le domaine plastique la longueur axiale d'au moins une partie des éléments, de sorte qu'après la suppression de la force axiale une précharge subsiste sur les surfaces porteuses.
PCT/IB2005/054331 2004-12-23 2005-12-20 Raccord tubulaire pre-charge WO2006067740A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002591391A CA2591391A1 (fr) 2004-12-23 2005-12-20 Raccord tubulaire pre-charge

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR0413880 2004-12-23
FR0413880A FR2880097B1 (fr) 2004-12-23 2004-12-23 Connecteur de tuyau etanche
US10/908,057 2005-04-26
US10/908,057 US20070176424A1 (en) 2004-12-23 2005-04-26 Preloaded Tubular Connector

Publications (1)

Publication Number Publication Date
WO2006067740A1 true WO2006067740A1 (fr) 2006-06-29

Family

ID=36097202

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2005/054331 WO2006067740A1 (fr) 2004-12-23 2005-12-20 Raccord tubulaire pre-charge

Country Status (2)

Country Link
CA (1) CA2591391A1 (fr)
WO (1) WO2006067740A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008097226A1 (fr) * 2007-02-08 2008-08-14 Mohawk Energy Ltd. Raccordement tubulaire expansible

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4294559A (en) * 1979-08-27 1981-10-13 Pda Engineering Pre-stressed structural joint
FR2664355A1 (fr) * 1990-07-04 1992-01-10 Nobileau Philippe Tube radialement deformable en plusieurs troncons raccordes de maniere demontable et tubage faisant application.
US5794702A (en) * 1996-08-16 1998-08-18 Nobileau; Philippe C. Method for casing a wellbore
US20030234538A1 (en) * 2002-06-24 2003-12-25 Weatherford/Lamb, Inc. Multi-point high pressure seal for expandable tubular connections

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4294559A (en) * 1979-08-27 1981-10-13 Pda Engineering Pre-stressed structural joint
FR2664355A1 (fr) * 1990-07-04 1992-01-10 Nobileau Philippe Tube radialement deformable en plusieurs troncons raccordes de maniere demontable et tubage faisant application.
US5794702A (en) * 1996-08-16 1998-08-18 Nobileau; Philippe C. Method for casing a wellbore
US20030234538A1 (en) * 2002-06-24 2003-12-25 Weatherford/Lamb, Inc. Multi-point high pressure seal for expandable tubular connections

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008097226A1 (fr) * 2007-02-08 2008-08-14 Mohawk Energy Ltd. Raccordement tubulaire expansible

Also Published As

Publication number Publication date
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