EP0689637B1 - Verfahren und vorrichtung zur zementierung eines bohrloches - Google Patents

Verfahren und vorrichtung zur zementierung eines bohrloches Download PDF

Info

Publication number
EP0689637B1
EP0689637B1 EP94910448A EP94910448A EP0689637B1 EP 0689637 B1 EP0689637 B1 EP 0689637B1 EP 94910448 A EP94910448 A EP 94910448A EP 94910448 A EP94910448 A EP 94910448A EP 0689637 B1 EP0689637 B1 EP 0689637B1
Authority
EP
European Patent Office
Prior art keywords
preform
cement
fluid
well
fact
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
EP94910448A
Other languages
English (en)
French (fr)
Other versions
EP0689637A1 (de
Inventor
Eric Bertet
Jean-Marie Gueguen
Jean-Louis Saltel
Frédéric SIGNORI
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.)
Drillflex
Original Assignee
Drillflex
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
Application filed by Drillflex filed Critical Drillflex
Publication of EP0689637A1 publication Critical patent/EP0689637A1/de
Application granted granted Critical
Publication of EP0689637B1 publication Critical patent/EP0689637B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • E21B43/105—Expanding tools specially adapted 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/127—Packers; Plugs with inflatable sleeve
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
    • E21B33/14—Methods or devices for cementing, for plugging holes, crevices or the like for cementing casings into boreholes
    • 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

Definitions

  • the present invention relates to a method of cementing casing inside a wellbore or a pipe. It also relates to the use of a cementing device in such a process.
  • the invention applies in particular to wells, in particular oil wells.
  • wells in particular oil wells.
  • the description which follows relates to a vertical well, it goes without saying that the invention can also be implemented in non-vertical, but deviated, or even horizontal, wells. It is also applicable to pipelines, for example to oil and gas pipelines, with a view to repairing them by fitting an internal lining.
  • casing In the field of oil drilling, a casing, or casing, - commonly designated by the English term “casing” - is a cylindrical pipe made of rigid material intended to be placed inside the well. It is fixed there by means of a cement, commonly called “slag". The presence of the casing makes it possible to have a cylindrical well, of well defined diameter, with rigid wall, which allows the passage of various tools and elements necessary for the exploitation of the well.
  • the casing is cemented from the base of the casing by injecting a cement into the annular space between the casing and the well.
  • This cement is injected from the surface through the very interior of the casing (plug method) or through drill rods (cementing commonly referred to by the term "innerstring”).
  • Tubing has recently been proposed which is obtained from a tubular preform which is deformable by expansion in radial direction between a first state - called folded - in which its largest transverse dimension is substantially less than the diameter of the well, and a second state - said unfolded - in which it has a cylindrical shape with a diameter slightly smaller than that of the well, this preform being curable in situ (after radial expansion) to form the casing.
  • the objective of the present invention is to provide a method and a use of a device for cementing a casing of this kind, by means of which the cementing can be carried out under satisfactory conditions, even if the annular space available for the cement is reduced.
  • the balloon is inflated from the surface, by means of a fluid which is supplied by a tube passing longitudinally and right through the preform.
  • a device for cementing a casing in a process as described above which is also part of the present invention, comprises a tube for supplying fluids passing right through the preform and the l he low end is connected to an inflatable hydraulic shutter.
  • the device is provided with a fluid distributor jacket, into which opens the lower end of the tube.
  • this distributor jacket constitutes a multi-way valve making it possible to selectively communicate the fluid supply tube with the interior of the shutter, with the exterior, and with the interior of the preform.
  • the dispenser liner has pressure chambers the outlet of which can be closed off by balls which are put in place during operation, via the fluid supply tube.
  • the fluid supply tube is provided with a valve located above the high end of the preform, this valve serving to degrade the excess cement, as has been mentioned more high.
  • the ground surface has been designated by the reference S , and by the reference P the wall of a wellbore, of approximately cylindrical shape, with a vertical axis.
  • the cementing device shown in this figure which is housed inside the well, essentially comprises a deformable tubular preform 1 carried by a tube 2 which passes right through it, a distribution jacket 3 disposed at the base of the preform, and an inflatable hydraulic shutter 4, disposed at the base of the jacket 3.
  • the assembly is suspended from a pipe 20, the latter being for example a flexible pipe unwound from a reel carried by an apparatus located on the surface.
  • a connecting element between the piping 20 and the tube 2 by the element 22 a connecting sleeve between the tube 2 and the upper end part of the preform.
  • the sleeve 22 is provided with a calibrated relief valve 23 (ball valve), the role of which is to make the interior of the preform communicate with the outside when the pressure prevailing in the preform exceeds a predetermined threshold, like this will be explained later.
  • the preform 1 is for example of the type which is the subject of patent application FR-A-2 668 241 already cited. It is folded back on itself in the longitudinal direction so that in this folded state, which corresponds to that shown in Figure 1, it occupies a footprint very substantially less than the diameter of the well. On the other hand, in its unfolded state, which is visible in particular in Figures 3D and 3E, it has a cylindrical shape with a diameter slightly smaller than that of the well.
  • the wall of the preform is composed of a core 100 sandwiched between an inner skin 101 and an outer skin 102.
  • the core 100 is made of material composed of filaments impregnated with a thermosetting resin.
  • the skins 101 and 102 are for example thin synthetic fabrics.
  • the preform 1 is attached to the sleeve 22 by means of a flexible sleeve 10, frustoconical; similarly, its lower end is connected to the jacket 3 by a frustoconical sleeve 11 made of flexible material.
  • the sleeve 11 is fixed, for example by gluing, at its lower end to the jacket 3, and by its upper zone to the inner skin 101.
  • the sleeve 10 is fixed by its lower zone to the inner skin 101, and in the upper part to the sleeve 22.
  • the tube 2 passes right through the preform 1 and opens at its lower end into the jacket 3.
  • the latter consists of a body 30, of generally cylindrical shape, the upper end 31 of which is fixed, as already said, to the handle 11, and the lower portion 32 of which carries the shutter 4.
  • the end of the tube 2 is housed coaxially in a bore provided in the dispensing jacket 3, and is fixed by suitable means not shown.
  • the tube 2 opens into a so-called main pressure chamber 83, the latter opening itself, via an axial channel 830 into a secondary pressure chamber, of cylindrical shape, 8.
  • the inlet of the channel 830 is chamfered, constituting a frustoconical seat 84.
  • the chamber 8, coaxial with the body 30, plays the role of a cylinder for the sliding of a piston 5.
  • the piston 5 has a head against which acts a compression spring 54 which tends to push it back upwards, as well as a tail 500, of smaller diameter, penetrating into an auxiliary chamber 80.
  • the space situated below the piston head which communicates with the outside by a pressure balancing channel 850 .
  • the chamber 80 communicates, by means of a non-return valve constituted by a ball 89 urged by a spring 890, with a bore 88 which opens into a chamber 81 corresponding to the interior space of the shutter 4.
  • L space 81 communicates through suitable openings 810 with an annular space, against the internal wall of the membrane 40 constituting the shutter 4.
  • This membrane 40 is made of elastically deformable material such as an elastomer. It has the shape of a normally cylindrical sleeve, fixed by its end zones, for example by crimping, to the body 30. When it is subjected to an internal pressure, the obturator inflates radially as shown in FIG. 2 In this same figure, the broken outline of the uninflated membrane has been shown in dashed lines.
  • the piston 5 is crossed coaxially by a central bore comprising in the upper part a large diameter portion 50 and in part lower portion of smaller diameter 51.
  • the bore 50 opens into the chamber 8 via a chamfered, frustoconical part, 52.
  • the head of the piston 5 is also pierced with a radial bore 53 which communicates bore 50 with the outside.
  • the bore 53 comes in correspondence with a bore 85, also arranged radially, in the body 30
  • the bore 50 communicates, via the radial bores 53 and 85, with the outside.
  • radial bores 53 can be provided, regularly distributed angularly, for example three bores arranged at 120 °, and a corresponding number of bores 85 is provided in the body 30.
  • a bore 82 which surrounds the tube 2.
  • the latter receives an annular mounting part 6 in which is mounted a thin membrane 60 - called frangible - whose breaking strength is calibrated .
  • a breakaway pin valve Alternatively it could be replaced by a breakaway pin valve.
  • the frangible membrane 60 delimits a pressure chamber 82 surrounding the tube 2, and which communicates with the channel 830 by a channel 87.
  • a shutter plug 7 for example cylindrical, housed in a bore of complementary shape.
  • the plug 7 is held in its housing by a breakable pin 70, the breaking strength of which is also calibrated.
  • the bore which is closed by the plug 7 communicates by a channel 320 with the space 81 inside the inflatable shutter 4.
  • the base of the plug 7 is opposite a channel 86 which communicates with the pressure chamber 83 .
  • a ball valve 860 calibrated to allow a fluid to enter only if its pressure exceeds a certain value, slightly lower than that which causes the pin 70 to break. Thanks to this valve, the fluids can only enter channel 86 at the end of the cycle.
  • the device is completed by a locking system of the piston 5 in the low position, not shown.
  • This system which may be of a type known per se, for example with a pivoting ratchet, is arranged in such a way that the piston 5 normally occupies a position close to its extreme low position, preventing the thrust of the spring 54 from raising it.
  • this locking system is automatically rendered inoperative following a slight downward pulse given on the piston 5.
  • FIGS. 3, 3A to 3E and 6, 6A to 6E we will now explain how the device which has just been described is used for cementing casing from preform 1 in well P.
  • the preform is first lowered into the well by means of the pipe 20, to the desired depth, so that it is opposite the zone Z where it must be fixed.
  • the shutter 4 is then inflated, as symbolized by the arrows f in FIG. 3A.
  • the inflation of the shutter is carried out from the surface S by the introduction of a fluid L inside the pipe 20, then the tube 2.
  • the fluid L is a liquid, for example water or ethylene glycol under pressure, injected into the piping by means of a high pressure circulation pump.
  • suitable locking means keep the piston 5 in the low position, almost in abutment against the stop 35.
  • the pressurized fluid L arrives in the pressure chamber 83, in the channel 830, the auxiliary chamber 8, passes through the piston and arrives in the auxiliary chamber 80.
  • the fluid due to its pressure, repels the ball 89 from the valve non-return and enters the space 81 inside the shutter, causing it to swell.
  • the membrane 40 therefore comes to be applied intimately against the wall of the well, closing the latter in a sealed manner at the base of the preform. Above a certain pressure, for example 40 bars, the pumping of the fluid L is stopped. Thanks to the non-return valve, the pressurized fluid is retained in the balloon, keeping it inflated.
  • a cement L1 is then sent into the tube 2. This cement is injected at the periphery of the head 3, above the inflated balloon 4, via the opening (or openings) 85 .
  • the necessary dose of cement has already been determined, the volume of which must correspond substantially to the volume of the annular space between the casing (when the preform will be dilated) and the wall of the well over the entire length of the casing.
  • This volume naturally depends on the length of the casing, the relative diameters between the well and the casing, and surface irregularities of the wall of the tube. It goes without saying, in fact, that if certain wall breaches have a great depth, it is necessary to take them into account when determining the volume of cement to be injected.
  • the cement L1 is of known nature, capable of ensuring correct fixing of the casing with the wall of the well, for example a hardening resin.
  • the cement thus injected L1 surrounds the lower portion of the preform 1, over a certain height.
  • flushing fluid another L2 fluid is then injected, called flushing fluid.
  • This is for example a sludge having a density greater than that of cement, and the nature of which is such that it does not easily mix with it.
  • the fluid L2 arrives at the preform base by passing through the openings 85 (see arrows g , FIG. 3B), and comes to occupy the annular space located above the obturator 4 (always inflated). Its volume is calculated in such a way that it drives all of the L1 cement upwards, opposite the preform.
  • a ball 9 of small diameter is sent from the surface into the piping 20, then passes through the tube 2, at the same time as the fluid L2.
  • the diameter of the ball referenced 9 in FIG. 6C is greater than the diameter of the bore 50 but less than that of the bore 830. It therefore crosses the latter, to come to bear against the frustoconical seat 52 forming a chamfer d entry of the channel 50. Since the fluid can no longer penetrate the piston, this results in a push on the latter, which causes it to slide downwards.
  • the piston descends to its lower stop 35, by actuating the trigger of the blocking system, which then automatically locks it in its low position, thus closing the communication with the opening 85. Then, still introduced from the surface, a fluid L3 necessary for the expansion and polymerization of the preform in the pipe 20.
  • the fluid L3 is for example water loaded with solid particles (densifying agent) which give it a density greater than that of the fluids L1 and L2 . It is heated in such a way that it arrives in the jacket 3 at a temperature of the order of 130 ° C., suitable for causing the polymerization of the resin of the preform. It is injected at a pressure of approximately 60 bars, which is sufficient to cause the rupture of the membrane 60. Thus, this liquid is injected inside the preform via the channel 87, the chamber 82 and the space 60 ' occupied by the membrane (see Figure 6C). This achieves progressive inflation of the preform, which expands radially, and from bottom to top because the density of the interior fluid L3 is greater than that of the exterior fluids L2, L1.
  • solid particles densifying agent
  • This progressive expansion causes the cement L1 to be pumped up regularly, over the entire length of the preform.
  • the preform assumes, in the unfolded state, a cylindrical shape and constitutes the casing, referenced 1 '; the latter is uniformly coated with cement. It is understood that thanks to this progressive delivery of the cement, it will occupy the entire external surface of the casing, even if, in places, the passage space is small, or even zero.
  • the heated and pressurized L3 fluid is then circulated inside the preform - which has become casing - this during the time necessary for the polymerization of its wall, generally a few hours. At the same time, the cement sets.
  • the fluid used for the polymerization is not necessarily the same as that used for the progressive inflation of the preform, because once it has expanded, the density of the interior fluid does not matter. Its function is only to allow the polymerization of the wall.
  • a second ball is sent to the tube 2, referenced 9 'in FIG. 6D. Its diameter is such that it can pass inside the tube 2, but not inside the bore 830.
  • the ball 9 ′ therefore comes to bear against the chamfered seat 84 at the entrance to this bore 830.
  • the pressure of the fluid L3 is then increased so that it exceeds the setting value of the valve 860.
  • This pressure is transmitted via the channel 86 to the plug 7. It is relatively high, for example of the order of 100 bars, sufficient to cause breakage of the pin 70.
  • the plug 7 is therefore driven out, as illustrated in FIG. 6E, so that the liquid which was trapped in the shutter 4 can freely escape towards the bottom of the well through the channel 320.
  • the shutter deflates, as symbolized by the arrows j in FIG. 3E, while the fluid L2 which was above the shutter also falls to the bottom of the well.
  • the device should then be removed from the well. For this, pull upwards on the pipe 20, as symbolized by the arrow K in FIGS. 3E, 4 and 5.
  • the sleeve 11 turns over, and causes the removal of the inner skin 101, also by turning over in the manner of a sock (see FIG. 4A where this turning over is symbolized by the arrows r ).
  • the inner skin 101 is thus gradually and completely torn off as the device is removed.
  • the cemented casing remains, stripped of its inner skin.
  • FIG. 7 schematically illustrates the value of the pressures applied during the process.
  • the rectilinear curve portion OA represents the initial pressure increase during inflation of the hydraulic shutter, up to a pressure P 0, for example equal to approximately 30 bars.
  • the section of the curve AB corresponds to the end of inflation of the shutter at the pressure P1 (approximately 35 bars); during this phase the pressure exerted on the piston head causes it to move downwards, thereby releasing its locking mechanism.
  • the section of curve BC corresponds to the stopping of the injection and to the upward movement of the piston (pushed by the spring 54) gradually discovering the openings 85.
  • the fluid injected so far is L.
  • the CD phase corresponds to successive injections of L1 cement and L2 flushing fluid.
  • the point E corresponds to the sudden rise in pressure when the ball 9 pumped at its seat 52 is pumped at the end of the flushing fluid in order to obstruct the internal channel 50/51 of the piston.
  • the GH phase corresponds to the sudden drop in pressure resulting from the opening of the circulation inside the preform.
  • Phase HI corresponds to the inflation of the preform by means of the fluid L3 (pressure P5). At the end of inflation, the pressure increases, which corresponds to the segment IJ , until reaching the pressure controlled by the valve 23.
  • the phase JK corresponds to the polymerization of the preform.
  • Point L corresponds to the positioning of the ball 9 '.
  • the part of the curve LM corresponds to the stopping of pumping, the pressure (P7) remaining constant. Then, the pumping is resumed, and this results in a very significant increase in the pressure corresponding to the segment MN.
  • the pressure P8, for example of the order of 100 bars is sufficient to achieve the rupture of the pin 70, causing the instantaneous deflation of the hydraulic shutter, which corresponds to the rapid drop in pressure of the segment NQ .

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Pipe Accessories (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Claims (11)

  1. Verfahren für die Zementierung eines Bohrlochs oder einer in etwa zylindrischen Kanalisation ab einem rohrförmigen Vorformling, welcher durch Dilatation in radialer Richtung zwischen einem ersten Zustand - dem sogenannten eingezogenen Zustand - , in dem seine größte Seitenabmessung deutlich unter dem Durchmesser des Bohrlochs oder der Kanalisation liegt, und einem zweiten - dem sogenannten ausgezogenen - Zustand verformbar ist, in dem er eine zylindrische Form mit einem Durchmesser hat, welcher etwas kleiner ist, als der Durchmesser des Bohrlochs oder der Kanalisation, wobei dieser Vorformling an Ort und Stelle ausgehärtet werden kann, um den Röhrenstrang zu bilden,
    dadurch gekennzeichnet, daß
    a) der Vorformling (1) im eingezogenen Zustand in das Bohrloch oder die Kanalisation (P) eingebracht und auf die gewünschte Höhe abgesenkt wird;
    b) das Bohrloch oder die Kanalisation (P) am Fußende des Vorformlings (1) in diesem Bereich durch Aufblasen eines hydraulisch verformbaren Bohrlochschiebers (4) verschlossen wird;
    c) ein fluider und aushärtbarer Zement (L1) oberhalb des Bohrlochschiebers (4) so eingespritzt wird, daß er den unteren Teil des Vorformlings umschließt, wobei das Volumen des Zementes (L1) weitgehend dem Volumen entspricht, welches für die Zementierung des Röhrenstrangs in dem Bohrloch oder der Kanalisation notwendig ist;
    d) der Vorformling (1) so verformt wird, daß er im ausgezogenen Zustand eingezogen werden kann, wobei diese Verformung allmählich von unten nach oben verläuft, so daß der Zement langsam in dem ringförmigen Freiraum zwischen dem Vorformling (1) und der Wand des Bohrlochs oder der Kanalisation über die gesamte Länge des Vorformlings vergossen werden kann;
    e) eine Aushärtung des Vorformlings (1) durchgeführt wird, um den Röhrenstrang (1') herzustellen und anschließend der Zement (L1) getrocknet wird;
    f) der Bohrlochschieber (4) abgeblasen und aus dem Bohrloch oder der Kanalisation herausgezogen wird.
  2. Verfahren nach Anspruch 1,
    dadurch gekennzeichnet, daß
    der Bohrlochschieber (4) von der Oberfläche mit einem hydraulischen Fluid aufgeblasen wird, welches über ein Rohr (2) zugeleitet wird, das den Vorformling (1) in seiner Längsrichtung vollständig durchquert.
  3. Verfahren nach Anspruch 2,
    dadurch gekennzeichnet, daß
    nach dem Einspritzen des Zements (L1) im Verfahrensschritt c) eine weitere nicht härtbare sogenannte Spülflüssigkeit (L2) eingespritzt wird, welche eine höhere Dichte als der Zement (L1) besitzt und die den Raum zwischen dem Bohrlochschieber (4) und dem unteren Ende des Vorformlings (1) ausfüllt.
  4. Verfahren nach einem der Ansprüche 2 oder 3,
    dadurch gekennzeichnet, daß
    der Zement (L1) und eventuell die Spülflüssigkeit (L2) von der Oberfläche über das gleiche Rohr (2) eingefüllt werden, das auch für das Aufblasen des Bohrlochschiebers (4) dient, und zwar über einen Verteilermantel (4), welcher am Ende des Rohres (2) montiert ist und den Bohrlochschieber (4) trägt.
  5. Verfahren nach Anspruch 4, welches mit einem Vorformling (1) mit einer warm polymerisierenden Wand durchgeführt wird,
    dadurch gekennzeichnet, daß
    die radiale Dilatation und die Aushärtung dieses Vorformlings mit einem warmen Fluid durchgeführt wird, welches von der Oberfläche durch das Rohr (2) über den Verteilermantel (3) zugeführt wird.
  6. Verfahren nach einem der Ansprüche 1 bis 5,
    dadurch gekennzeichnet, daß
    nach dem Verfahrensschritt d) ein Fluid (L3) in den Bereich eingespritzt wird, welcher über dem oberen Ende des Vorformlings (1) liegt, um den in diesem Bereich eventuell vorhandenen überschüssigen Zement zu entfernen.
  7. Verwendung einer Zementierungsvorrichtung in einem Verfahren nach den Ansprüchen 1 bis 6,
    dadurch gekennzeichnet, daß
    diese Vorrichtung ein Rohr für die Einspeisung von Fluiden (2) aufweist, welches den Vorformling (1) vollständig durchquert und dessen unteres Ende an einen aufblasbaren hydraulischen Bohrlochschieber (4) angeschlossen ist.
  8. Verwendung einer Vorrichtung nach Anspruch 7,
    dadurch gekennzeichnet, daß
    sie mit einem Verteilermantel (3) für Fluide ausgerüstet ist, in den das untere Ende des Rohres (2) mündet.
  9. Verwendung einer Vorrichtung nach Anspruch 8,
    dadurch gekennzeichnet, daß
    der Verteilermantel (3) einen Mehrwegeschütz bildet, der es erlaubt, wahlweise das Speiserohr für Fluide mit der Innenseite des Bohrlochschiebers (4), der Außenseite und mit dem Inneren des Vorformlings (1) zu verbinden.
  10. Verwendung einer Vorrichtung nach Anspruch 9,
    dadurch gekennzeichnet, daß
    der Verteilermantel (3) mit Druckkammern (8, 83) ausgestattet ist, deren Auslaß mittels Riegelkugeln (9, 9') verschlossen wird, welche im Betrieb über das Speiserohr für Fluide (2) betätigt werden.
  11. Verwendung einer Vorrichtung nach einem der Ansprüche 7 bis 9,
    dadurch gekennzeichnet, daß
    das Speiserohr für Fluide mit einem Ventil (23) ausgerüstet ist, welches über dem oberen Ende des Vorformlings angeordnet ist.
EP94910448A 1993-03-25 1994-03-22 Verfahren und vorrichtung zur zementierung eines bohrloches Expired - Lifetime EP0689637B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9303638A FR2703102B1 (fr) 1993-03-25 1993-03-25 Procédé de cimentation d'un tubage déformable à l'intérieur d'un puits de forage ou d'une canalisation.
FR9303638 1993-03-25
PCT/FR1994/000310 WO1994021887A1 (fr) 1993-03-25 1994-03-22 Procede et dispositif pour la cimentation d'un puits

Publications (2)

Publication Number Publication Date
EP0689637A1 EP0689637A1 (de) 1996-01-03
EP0689637B1 true EP0689637B1 (de) 1997-10-15

Family

ID=9445484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94910448A Expired - Lifetime EP0689637B1 (de) 1993-03-25 1994-03-22 Verfahren und vorrichtung zur zementierung eines bohrloches

Country Status (5)

Country Link
US (1) US5718288A (de)
EP (1) EP0689637B1 (de)
AU (1) AU6285994A (de)
FR (1) FR2703102B1 (de)
WO (1) WO1994021887A1 (de)

Families Citing this family (130)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6209636B1 (en) * 1993-09-10 2001-04-03 Weatherford/Lamb, Inc. Wellbore primary barrier and related systems
FR2717855B1 (fr) * 1994-03-23 1996-06-28 Drifflex Procédé pour rendre étanche la liaison entre un chemisage intérieur d'une part, et un puits de forage, un tubage ou une canalisation extérieure d'autre part.
US7040420B2 (en) 1994-10-14 2006-05-09 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7228901B2 (en) * 1994-10-14 2007-06-12 Weatherford/Lamb, Inc. Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
FR2735523B1 (fr) * 1995-06-13 1997-07-25 Inst Francais Du Petrole Methode et dispositif de tubage de puits avec un tube en composite
FR2737534B1 (fr) * 1995-08-04 1997-10-24 Drillflex Dispositif de chemisage d'une bifurcation d'un puits, notamment de forage petrolier, ou d'une canalisation, et procede de mise en oeuvre de ce dispositif
FR2737533B1 (fr) * 1995-08-04 1997-10-24 Drillflex Manchon tubulaire gonflable pour tuber ou obturer un puits ou une canalisation
US6135208A (en) 1998-05-28 2000-10-24 Halliburton Energy Services, Inc. Expandable wellbore junction
US6604763B1 (en) 1998-12-07 2003-08-12 Shell Oil Company Expandable connector
US6745845B2 (en) 1998-11-16 2004-06-08 Shell Oil Company Isolation of subterranean zones
GB2343691B (en) 1998-11-16 2003-05-07 Shell Int Research Isolation of subterranean zones
US6640903B1 (en) 1998-12-07 2003-11-04 Shell Oil Company Forming a wellbore casing while simultaneously drilling a wellbore
GB2384502B (en) 1998-11-16 2004-10-13 Shell Oil Co Coupling an expandable tubular member to a preexisting structure
US7121352B2 (en) 1998-11-16 2006-10-17 Enventure Global Technology Isolation of subterranean zones
US6634431B2 (en) 1998-11-16 2003-10-21 Robert Lance Cook Isolation of subterranean zones
US6712154B2 (en) 1998-11-16 2004-03-30 Enventure Global Technology Isolation of subterranean zones
US7603758B2 (en) 1998-12-07 2009-10-20 Shell Oil Company Method of coupling a tubular member
US6823937B1 (en) 1998-12-07 2004-11-30 Shell Oil Company Wellhead
US7231985B2 (en) * 1998-11-16 2007-06-19 Shell Oil Company Radial expansion of tubular members
US7357188B1 (en) * 1998-12-07 2008-04-15 Shell Oil Company Mono-diameter wellbore casing
US6575240B1 (en) 1998-12-07 2003-06-10 Shell Oil Company System and method for driving pipe
US6557640B1 (en) * 1998-12-07 2003-05-06 Shell Oil Company Lubrication and self-cleaning system for expansion mandrel
US7363984B2 (en) 1998-12-07 2008-04-29 Enventure Global Technology, Llc System for radially expanding a tubular member
GB2344606B (en) * 1998-12-07 2003-08-13 Shell Int Research Forming a wellbore casing by expansion of a tubular member
US7552776B2 (en) 1998-12-07 2009-06-30 Enventure Global Technology, Llc Anchor hangers
US20070051520A1 (en) * 1998-12-07 2007-03-08 Enventure Global Technology, Llc Expansion system
US6758278B2 (en) 1998-12-07 2004-07-06 Shell Oil Company Forming a wellbore casing while simultaneously drilling a wellbore
GB2356651B (en) 1998-12-07 2004-02-25 Shell Int Research Lubrication and self-cleaning system for expansion mandrel
US7195064B2 (en) 1998-12-07 2007-03-27 Enventure Global Technology Mono-diameter wellbore casing
US7185710B2 (en) 1998-12-07 2007-03-06 Enventure Global Technology Mono-diameter wellbore casing
US7311148B2 (en) * 1999-02-25 2007-12-25 Weatherford/Lamb, Inc. Methods and apparatus for wellbore construction and completion
AU770359B2 (en) 1999-02-26 2004-02-19 Shell Internationale Research Maatschappij B.V. Liner hanger
US7055608B2 (en) 1999-03-11 2006-06-06 Shell Oil Company Forming a wellbore casing while simultaneously drilling a wellbore
FR2791733B1 (fr) * 1999-03-31 2001-06-29 Dowell Schlumberger Services Procede et dispositif pour la completion de puits pour la production d'hydrocarbures ou analogues
US6431282B1 (en) * 1999-04-09 2002-08-13 Shell Oil Company Method for annular sealing
CA2306656C (en) * 1999-04-26 2006-06-06 Shell Internationale Research Maatschappij B.V. Expandable connector for borehole tubes
US7350563B2 (en) 1999-07-09 2008-04-01 Enventure Global Technology, L.L.C. System for lining a wellbore casing
US6273190B1 (en) * 1999-10-13 2001-08-14 Donald M. Sawyer Wellbore sidetrack plug
AU783245B2 (en) 1999-11-01 2005-10-06 Shell Internationale Research Maatschappij B.V. Wellbore casing repair
EG22306A (en) 1999-11-15 2002-12-31 Shell Int Research Expanding a tubular element in a wellbore
US7234531B2 (en) 1999-12-03 2007-06-26 Enventure Global Technology, Llc Mono-diameter wellbore casing
US20060124306A1 (en) * 2000-01-19 2006-06-15 Vail William B Iii Installation of one-way valve after removal of retrievable drill bit to complete oil and gas wells
US6729393B2 (en) * 2000-03-30 2004-05-04 Baker Hughes Incorporated Zero drill completion and production system
US7334650B2 (en) 2000-04-13 2008-02-26 Weatherford/Lamb, Inc. Apparatus and methods for drilling a wellbore using casing
US6478091B1 (en) 2000-05-04 2002-11-12 Halliburton Energy Services, Inc. Expandable liner and associated methods of regulating fluid flow in a well
US6457518B1 (en) 2000-05-05 2002-10-01 Halliburton Energy Services, Inc. Expandable well screen
US7100684B2 (en) 2000-07-28 2006-09-05 Enventure Global Technology Liner hanger with standoffs
AU9269501A (en) * 2000-09-18 2002-03-26 Shell Oil Co Liner hanger with sliding sleeve valve
GB0023032D0 (en) 2000-09-20 2000-11-01 Weatherford Lamb Downhole apparatus
GB2389597B (en) 2000-10-02 2005-05-18 Shell Oil Co Plastically deforming and radially expanding a tubular member
WO2002053867A2 (en) 2001-01-03 2002-07-11 Enventure Global Technology Mono-diameter wellbore casing
US7100685B2 (en) 2000-10-02 2006-09-05 Enventure Global Technology Mono-diameter wellbore casing
AU2002210620A1 (en) * 2000-10-06 2002-04-15 Philippe Nobileau Method and system for tubing a borehole in single diameter
GB2369136A (en) * 2000-11-20 2002-05-22 Toolbox Drilling Solutions Ltd A down-hole tool
US6725934B2 (en) * 2000-12-21 2004-04-27 Baker Hughes Incorporated Expandable packer isolation system
US7410000B2 (en) * 2001-01-17 2008-08-12 Enventure Global Technology, Llc. Mono-diameter wellbore casing
GB2395506B (en) 2001-07-06 2006-01-18 Eventure Global Technology Liner hanger
CA2453063C (en) * 2001-07-06 2011-03-22 Enventure Global Technology Liner hanger
GC0000398A (en) * 2001-07-18 2007-03-31 Shell Int Research Method of activating a downhole system
US7258168B2 (en) 2001-07-27 2007-08-21 Enventure Global Technology L.L.C. Liner hanger with slip joint sealing members and method of use
GB2409218B (en) 2001-08-20 2006-03-15 Enventure Global Technology Apparatus and method for radially expanding tubular members including an adjustable tubular expansion device
WO2003106130A2 (en) * 2002-06-12 2003-12-24 Eventure Global Technology Collapsible expansion cone
US7793721B2 (en) * 2003-03-11 2010-09-14 Eventure Global Technology, Llc Apparatus for radially expanding and plastically deforming a tubular member
WO2003023178A2 (en) * 2001-09-07 2003-03-20 Enventure Global Technology Adjustable expansion cone assembly
US7546881B2 (en) 2001-09-07 2009-06-16 Enventure Global Technology, Llc Apparatus for radially expanding and plastically deforming a tubular member
RU2182957C1 (ru) * 2001-10-04 2002-05-27 Терентьев Сергей Владимирович Устройство для изоляции пластов в скважине
GB2422859B (en) * 2001-11-12 2006-12-13 Enventure Global Technology Collapsible expansion cone
US7066284B2 (en) * 2001-11-14 2006-06-27 Halliburton Energy Services, Inc. Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell
US7128170B1 (en) 2001-11-15 2006-10-31 Mark Alexander Russell Adjustable stabiliser for directional drilling
US6668928B2 (en) 2001-12-04 2003-12-30 Halliburton Energy Services, Inc. Resilient cement
US7040404B2 (en) * 2001-12-04 2006-05-09 Halliburton Energy Services, Inc. Methods and compositions for sealing an expandable tubular in a wellbore
AU2002367348A1 (en) * 2001-12-27 2003-07-24 Enventure Global Technology Seal receptacle using expandable liner hanger
WO2003089161A2 (en) * 2002-04-15 2003-10-30 Enventure Global Technlogy Protective sleeve for threaded connections for expandable liner hanger
WO2004018824A2 (en) 2002-08-23 2004-03-04 Enventure Global Technology Magnetic impulse applied sleeve method of forming a wellbore casing
US7424918B2 (en) 2002-08-23 2008-09-16 Enventure Global Technology, L.L.C. Interposed joint sealing layer method of forming a wellbore casing
ATE417993T1 (de) * 2002-02-15 2009-01-15 Enventure Global Technology Bohrlochfutterrohr mit einem einzigen durchmesser
US6772841B2 (en) 2002-04-11 2004-08-10 Halliburton Energy Services, Inc. Expandable float shoe and associated methods
EP1985797B1 (de) * 2002-04-12 2011-10-26 Enventure Global Technology Schutzhülse für Gewindeverbindungen für eine ausdehnbare Liner-Aufhängvorrichtung
US7000695B2 (en) 2002-05-02 2006-02-21 Halliburton Energy Services, Inc. Expanding wellbore junction
CA2484966A1 (en) * 2002-05-06 2003-11-13 Enventure Global Technology Mono diameter wellbore casing
AU2003225001A1 (en) 2002-05-29 2003-12-19 Eventure Global Technology System for radially expanding a tubular member
GB2418944B (en) * 2002-06-10 2006-08-30 Enventure Global Technology Mono Diameter Wellbore Casing
US6722433B2 (en) 2002-06-21 2004-04-20 Halliburton Energy Services, Inc. Methods of sealing expandable pipe in well bores and sealing compositions
AU2003253770A1 (en) * 2002-07-24 2004-02-09 Enventure Global Technology Dual well completion system
WO2004011776A2 (en) * 2002-07-29 2004-02-05 Enventure Global Technology Method of forming a mono diameter wellbore casing
US7730965B2 (en) 2002-12-13 2010-06-08 Weatherford/Lamb, Inc. Retractable joint and cementing shoe for use in completing a wellbore
CA2499071C (en) 2002-09-20 2014-06-03 Enventure Global Technology Self-lubricating expansion mandrel for expandable tubular
CA2499007C (en) * 2002-09-20 2012-08-07 Enventure Global Technology Bottom plug for forming a mono diameter wellbore casing
WO2004027392A1 (en) * 2002-09-20 2004-04-01 Enventure Global Technology Pipe formability evaluation for expandable tubulars
MXPA05003117A (es) * 2002-09-20 2005-08-03 Eventure Global Technology Revestimiento de pozo de un solo diametro.
AU2003298954A1 (en) * 2002-09-20 2004-03-29 Enventure Global Technlogy Threaded connection for expandable tubulars
US6935432B2 (en) * 2002-09-20 2005-08-30 Halliburton Energy Services, Inc. Method and apparatus for forming an annular barrier in a wellbore
AU2003263859A1 (en) * 2002-09-20 2004-04-08 Enventure Global Technology Protective sleeve for expandable tubulars
US6854522B2 (en) 2002-09-23 2005-02-15 Halliburton Energy Services, Inc. Annular isolators for expandable tubulars in wellbores
US7048066B2 (en) * 2002-10-09 2006-05-23 Halliburton Energy Services, Inc. Downhole sealing tools and method of use
US7303022B2 (en) * 2002-10-11 2007-12-04 Weatherford/Lamb, Inc. Wired casing
WO2004053434A2 (en) * 2002-12-05 2004-06-24 Enventure Global Technology System for radially expanding tubular members
US6863130B2 (en) * 2003-01-21 2005-03-08 Halliburton Energy Services, Inc. Multi-layer deformable composite construction for use in a subterranean well
WO2004076798A2 (en) * 2003-02-26 2004-09-10 Enventure Global Technology Apparatus for radially expanding and plastically deforming a tubular member
US7886831B2 (en) * 2003-01-22 2011-02-15 Enventure Global Technology, L.L.C. Apparatus for radially expanding and plastically deforming a tubular member
US7503393B2 (en) 2003-01-27 2009-03-17 Enventure Global Technology, Inc. Lubrication system for radially expanding tubular members
US20040144535A1 (en) * 2003-01-28 2004-07-29 Halliburton Energy Services, Inc. Post installation cured braided continuous composite tubular
USRE42877E1 (en) 2003-02-07 2011-11-01 Weatherford/Lamb, Inc. Methods and apparatus for wellbore construction and completion
CA2516140A1 (en) * 2003-02-18 2004-09-02 Enventure Global Technology Protective compression and tension sleeves for threaded connections for radially expandable tubular members
CA2517883C (en) * 2003-03-05 2010-01-12 Weatherford/Lamb, Inc. Full bore lined wellbores
WO2004079151A2 (en) * 2003-03-05 2004-09-16 Weatherford/Lamb, Inc. Drilling with casing latch
US6823943B2 (en) * 2003-04-15 2004-11-30 Bemton F. Baugh Strippable collapsed well liner
GB2415988B (en) 2003-04-17 2007-10-17 Enventure Global Technology Apparatus for radially expanding and plastically deforming a tubular member
US20050166387A1 (en) 2003-06-13 2005-08-04 Cook Robert L. Method and apparatus for forming a mono-diameter wellbore casing
US7082998B2 (en) * 2003-07-30 2006-08-01 Halliburton Energy Services, Inc. Systems and methods for placing a braided, tubular sleeve in a well bore
US7712522B2 (en) 2003-09-05 2010-05-11 Enventure Global Technology, Llc Expansion cone and system
US7264067B2 (en) * 2003-10-03 2007-09-04 Weatherford/Lamb, Inc. Method of drilling and completing multiple wellbores inside a single caisson
RU2296208C2 (ru) * 2003-12-09 2007-03-27 Открытое акционерное общество "Татнефть" им. В.Д. Шашина Пакерующее устройство дополнительной обсадной колонны
US7191844B2 (en) * 2004-01-09 2007-03-20 Schlumberger Technology Corp. Inflate control system for inflatable straddle stimulation tool
US7225875B2 (en) * 2004-02-06 2007-06-05 Halliburton Energy Services, Inc. Multi-layered wellbore junction
US20070039742A1 (en) * 2004-02-17 2007-02-22 Enventure Global Technology, Llc Method and apparatus for coupling expandable tubular members
US7325574B1 (en) * 2004-04-13 2008-02-05 Cherne Industries Incorporated Rupture disc assembly for pneumatic plugs
SE527426C2 (sv) * 2004-07-08 2006-02-28 Atlas Copco Rocktech Ab Anordning för fastsättning av en expanderbar packer i ett hål
GB2432866A (en) 2004-08-13 2007-06-06 Enventure Global Technology Expandable tubular
NO324007B1 (no) * 2004-11-01 2007-07-30 Hpi As Fremgangsmate og anordning ved fluidfortrengning
US7320366B2 (en) * 2005-02-15 2008-01-22 Halliburton Energy Services, Inc. Assembly of downhole equipment in a wellbore
CA2538196C (en) * 2005-02-28 2011-10-11 Weatherford/Lamb, Inc. Deep water drilling with casing
US7921924B2 (en) * 2006-12-14 2011-04-12 Schlumberger Technology Corporation System and method for controlling actuation of a well component
US8020577B1 (en) 2007-08-02 2011-09-20 Cherne Industries Incorporated Rupture disc assembly for pneumatic plugs
US7931091B2 (en) * 2007-10-03 2011-04-26 Schlumberger Technology Corporation Open-hole wellbore lining
US8394464B2 (en) * 2009-03-31 2013-03-12 Schlumberger Technology Corporation Lining of wellbore tubing
RU2449111C2 (ru) * 2010-07-05 2012-04-27 Открытое Акционерное Общество "Тяжпрессмаш" Устройство для изоляции пластов в скважине
RU2520243C1 (ru) * 2013-02-20 2014-06-20 Общество с ограниченной ответственностью "Научно-технический центр" ЗЭРС" (ООО "НТЦ "ЗЭРС") Пакер для скважины
WO2019165303A1 (en) * 2018-02-23 2019-08-29 Halliburton Energy Services, Inc. Cemented barrier valve protection
US11867021B2 (en) * 2022-04-27 2024-01-09 Saudi Arabian Oil Company Off-bottom cementing pod

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3493045A (en) * 1968-02-29 1970-02-03 Peppino Bassani Fluid pressurized shothole plug and water control device
US3477506A (en) * 1968-07-22 1969-11-11 Lynes Inc Apparatus relating to fabrication and installation of expanded members
US3527299A (en) * 1968-11-25 1970-09-08 Dow Chemical Co Float shoe apparatus
US3958637A (en) * 1975-05-22 1976-05-25 The United States Of America As Represented By The Secretary Of The Interior Technique for lining shaft
US4133386A (en) * 1976-12-17 1979-01-09 Halliburton Company Drill pipe installed large diameter casing cementing apparatus and method therefor
ATE32930T1 (de) * 1985-01-07 1988-03-15 Smf Int Durchflussferngesteuerte vorrichtung zum betaetigen insbesondere von stabilisatoren in einem bohrstrang.
US5024273A (en) * 1989-09-29 1991-06-18 Davis-Lynch, Inc. Cementing apparatus and method
WO1991018180A1 (fr) * 1990-05-18 1991-11-28 Philippe Nobileau Preforme, dispositif et procedes pour tuber et/ou chemiser un volume cylindrique
FR2662207B1 (fr) * 1990-05-18 1996-07-05 Philippe Nobileau Dispositif de tubage d'un forage et procede de tubage en resultant.
US5318122A (en) * 1992-08-07 1994-06-07 Baker Hughes, Inc. Method and apparatus for sealing the juncture between a vertical well and one or more horizontal wells using deformable sealing means
US5346007A (en) * 1993-04-19 1994-09-13 Mobil Oil Corporation Well completion method and apparatus using a scab casing
US5454419A (en) * 1994-09-19 1995-10-03 Polybore, Inc. Method for lining a casing

Also Published As

Publication number Publication date
AU6285994A (en) 1994-10-11
FR2703102A1 (fr) 1994-09-30
US5718288A (en) 1998-02-17
EP0689637A1 (de) 1996-01-03
WO1994021887A1 (fr) 1994-09-29
FR2703102B1 (fr) 1999-04-23

Similar Documents

Publication Publication Date Title
WO1994021887A1 (fr) Procede et dispositif pour la cimentation d'un puits
EP0842347B9 (de) Vorrichtung und verfahren zum verrohren einer leitungverzweigung, insbesondere in einer erdölbohrung
CA2228732C (fr) Manchon tubulaire gonflable pour tuber ou obturer un puits ou une canalisation
EP0325541B1 (de) Vorrichtung und Verfahren zum Isolieren produzierender Schichten in einer Bohrung
FR2741907A1 (fr) Procede et installation de forage et de chemisage d'un puits, notamment d'un puits de forage petrolier, au moyen de troncons tubulaires aboutes initialement souples, et durcis in situ
CA2083156C (fr) Preforme dispositif et procedes pour tuber et/ou chemiser un volume cylindrique
FR2722239A1 (fr) Preforme souple durcissable in situ pour le tubage d'un puits ou d'une canalisation, et procede pour la mettre en place sans ciment dans le puits ou la canalisation
FR2507242A1 (fr) Dispositif de fermeture temporaire pour formateurs de canal d'equipement de completion de puits
FR2808557A1 (fr) Procede et dispositif pour la regulation du debit des fluides de formation produits par un puits petrolier ou analogue
FR2958966A1 (fr) Procede et dispositif d'obturation d'un puits au moyen d'un bouchon expansible, bouchon pour la mise en oeuvre du procede, et outil extracteur adapte pour le retirer
WO1996021083A1 (fr) Procede et dispositif pour tuber un puits, notamment un puits de forage petrolier, ou une canalisation, au moyen d'une preforme tubulaire souple, durcissable in situ
WO2002029207A1 (fr) Methode et systeme de cuvelage d'un puits en diametre unique
WO2007063016A1 (fr) Procédé et dispositif de cimentation d'un puits ou d'une canalisation
FR3003891A1 (fr) Dispositif de commande et d'isolation d'un outil en forme de chemise expansible pour l'isolation de zones dans un puits
FR2716930A1 (fr) Valve de commande annulaire, apte à être positionnée dans un tube de production flexible.
BE1009965A3 (fr) Carottier.
CA2885071A1 (fr) Ancre de couple de blocage en rotation d'une colonne de production d'un puits, systeme de pompage et de blocage en rotation, et installation de pompage equipee d'une telle ancre de couple
EP3092368B1 (de) Isoliervorrichtung für ein bohrloch
WO2009050030A2 (fr) Dispositif de commande d ' un outil gonflable
BE1014730A3 (fr) Procede et dispositif de carottage et/ou forage devie.
BE1009968A5 (fr) Procede de carottage et carottier pour sa mise en oeuvre.
FR2659386A1 (fr) Equipement de lancement a distance de bouchons pour la cimentation de puits de forage sous-marins.
WO2017009460A1 (fr) Dispositif d'isolation pour puits avec un disque de rupture
FR2772826A1 (fr) Procede et outil pour traiter au moins la paroi d'une zone critique d'un trou de forage
FR2692003A1 (fr) Procédé et dispositif de contrôle de l'intégrité physique de tubes d'extraction et de gainages d'extraction dans des puits d'extraction par gaz.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19951023

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): GB

17Q First examination report despatched

Effective date: 19960308

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): GB

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19971027

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20100317

Year of fee payment: 17

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20110322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110322