EP2706188A2 - Barrière annulaire avec diaphragme - Google Patents

Barrière annulaire avec diaphragme Download PDF

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Publication number
EP2706188A2
EP2706188A2 EP13193384.8A EP13193384A EP2706188A2 EP 2706188 A2 EP2706188 A2 EP 2706188A2 EP 13193384 A EP13193384 A EP 13193384A EP 2706188 A2 EP2706188 A2 EP 2706188A2
Authority
EP
European Patent Office
Prior art keywords
annular barrier
barrier
zone
tubular part
expandable sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13193384.8A
Other languages
German (de)
English (en)
Other versions
EP2706188B1 (fr
EP2706188A3 (fr
Inventor
Jørgen HALLUNDBAEK
Paul Hazel
Lars Staehr
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.)
Welltec AS
Original Assignee
Welltec AS
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 Welltec AS filed Critical Welltec AS
Priority to NO13193384A priority Critical patent/NO2706188T3/no
Priority to EP13193384.8A priority patent/EP2706188B1/fr
Priority to DK13193384.8T priority patent/DK2706188T3/da
Publication of EP2706188A2 publication Critical patent/EP2706188A2/fr
Publication of EP2706188A3 publication Critical patent/EP2706188A3/fr
Application granted granted Critical
Publication of EP2706188B1 publication Critical patent/EP2706188B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • E21B33/1277—Packers; Plugs with inflatable sleeve characterised by the construction or fixation of the sleeve

Definitions

  • the present invention relates to an annular barrier arranged in a borehole for providing zone isolation between a first zone and a second zone. Furthermore, the present invention relates to an annular barrier system as well as to a method of placing an annular barrier in an annulus and a method of using annular barriers in an annulus to seal off a first zone from a second zone.
  • annular barriers are used for different purposes, such as for providing an isolation barrier.
  • An annular barrier has a tubular part mounted as part of the well tubular structure, such as the production casing, which is surrounded by an annular expandable sleeve.
  • the expandable sleeve is typically made of an elastomeric material, but may also be made of metal. The sleeve is fastened at its ends to the tubular part of the annular barrier.
  • a second annular barrier In order to seal off a zone between a well tubular structure and the borehole or an inner and an outer tubular structure, a second annular barrier is used.
  • the first annular barrier is expanded on one side of the zone to be sealed off, and the second annular barrier is expanded on the other side of that zone, and in this way, the zone is sealed off.
  • the pressure envelope of a well is governed by the burst rating of the tubular and the well hardware etc. used within the well construction.
  • the expandable sleeve of an annular barrier may be expanded by increasing the pressure within the well, which is the most cost-efficient way of expanding the sleeve.
  • the burst rating of a well defines the maximum pressure that can be applied to the well to expand the sleeve, and it is desirable to minimise the expansion pressure required for expanding the sleeve in order to minimise the exposure of the well to the expansion pressure.
  • annular barriers When expanded, annular barriers may be subjected to a continuous pressure or a periodic high pressure from the outside, either in the form of hydraulic pressure within the well environment or in the form of formation pressure. In some circumstances, such pressure may cause the annular barrier to collapse, which may have severe consequences for the area which is to be sealed off by the barrier, as the sealing properties are lost due to the collapse.
  • expansion means e.g. a pressurised fluid. If the fluid leaks from the sleeve, the back pressure may fade, and the sleeve itself may thus collapse.
  • the ability of the expanded sleeve of an annular barrier to withstand the collapse pressure is thus affected by many variables, such as strength of material, wall thickness, surface area exposed to the collapse pressure, temperature, well fluids, etc.
  • a collapse rating currently achievable for the expanded sleeve within certain well environments is insufficient for all well applications.
  • the collapse rating may be increased by increasing the wall thickness or the strength of the material, however, this would increase the expansion pressure, which, as already mentioned, is not desirable.
  • annular barrier is known from US 2006/027371 .
  • the annular barrier consists of an expandable sleeve and has a thin cover arranged on its exterior side.
  • the cover houses a sealant material, and substantially in the middle of the cover, one or more perforations may be arranged for extruding the sealant material out of the cover when the expandable sleeve is being expanded so that a seal is provided between the annular barrier and the borehole.
  • the extruded sealant material also seals off the perforations in the cover.
  • US 2006/027371 cannot compensate for varying collapse pressures.
  • annular barrier arranged in a borehole for providing zone isolation between a first zone and a second zone of the borehole, comprising:
  • the annular barrier is capable of withstanding an outside pressure that is higher than the pressure in the well tubular structure without changing the pressure inside the well tubular structure since the diaphragm seals off the inside of the well tubular structure from the outside of the well tubular structure.
  • the annular barrier may further comprise a second diaphragm, wherein the first and second diaphragms may divide the annular barrier space into the first barrier compartment, a second barrier compartment and an expansion compartment, and wherein the expansion compartment may be in fluid communication with an inside of the tubular part through the expansion opening, and the first barrier compartment may be in fluid communication with the first zone of the borehole through the first barrier opening, and the second barrier compartment may be in fluid communication with the second zone of the borehole through a second barrier opening.
  • the diaphragm may be made from a deformable material.
  • the annular barrier as described above may further comprise connection parts connecting the expandable sleeve to the tubular part at a first end and a second end of the expandable sleeve.
  • each end of the expandable sleeve may be connected to the tubular part by means of connection parts.
  • first barrier opening may extend through the connecting part and the expandable sleeve.
  • the expandable sleeve may have a first end and a second end, and may, in an expanded state, have a first section abutting an inside wall of the borehole and two second sections of the expandable sleeve at the first end and the second end and being connected with the tubular part, the first section and the two second sections being substantially parallel, and two intermediate sections connecting the first second and two second sections, the first barrier opening being arranged in at least one of the intermediate sections and/or the second section.
  • the first diaphragm may have a first end and a second end, the first end being arranged between a first end of the expandable sleeve and the tubular part, and the second end of first diaphragm being arranged between a second end of the expandable sleeve and the tubular part.
  • first diaphragm and the expandable sleeve at their ends may be connected to the tubular part by means of connection parts.
  • the diaphragm may be made from an elastically/plastically deformable material.
  • the diaphragm may be made from an expandable material.
  • the diaphragm may be cylindrical or corrugated.
  • the diaphragm may be made from metal, alloy, plastic, elastomers or natural or synthetic rubber, or any combination thereof.
  • the annular barrier may further comprise a connection part connecting the expandable sleeve to the tubular part.
  • the annular barrier may comprise a spacer which may be a part of the connection part, a part of the expandable sleeve or a separate part.
  • the second barrier opening may be arranged in the spacer.
  • At least one of the expansion pressure opening, the first pressure opening and/or the second pressure opening may comprise a valve.
  • Said at least one valve may be a one-way valve.
  • the annular barrier may further comprise a restriction element arranged on an outside of the expandable sleeve, restricting the sleeve from expanding freely.
  • the restriction element may be arranged on the inside of the sleeve.
  • the annular barrier may further comprise sealing elements arranged on an outside of the expandable sleeve for sealing against the inside wall of the borehole.
  • the diaphragm in an unexpanded state may substantially be shaped as a hollow cylinder.
  • the annular barrier according to the present invention may further comprise an anti-collapsing element connected with the expandable sleeve at predetermined positions along the sleeve.
  • the expandable sleeve may be capable of expanding to an at least 10% larger diameter, preferably an at least 15% larger diameter, more preferably an at least 30% larger diameter than that of an unexpanded sleeve, and it may have a wall thickness which is thinner than a length of the expandable sleeve, the thickness preferably being less than 25% of its length, more preferably less than 15% of its length, and even more preferably less than 10% of its length.
  • the expandable sleeve may have a varying thickness along its periphery and/or length.
  • connection parts may be slidable in relation to the tubular part of the annular barrier, and at least one sealing member, such as an O-ring or chevron seal, may be arranged between the slidable connection part and the tubular part.
  • sealing member such as an O-ring or chevron seal
  • more than one sealing member may be arranged between the slidable fastening means and the tubular part.
  • connection parts may be fixedly fastened to the tubular part or be part of the tubular part.
  • the sleeve may comprise a plurality of sections arranged along the non-inclining part of the sleeve and having a mutual distance between them.
  • the expandable sleeve may have an outer face onto which at least one sealing element is arranged opposite a section of the sleeve having an increased thickness.
  • the sealing elements may have a tapering or triangular cross-sectional shape.
  • the sealing elements may have a sealing surface facing the inner side of the borehole.
  • the sealing surface may be serrated or be another kind of deformable surface.
  • the sealing elements may be made of polymers, elastomers, natural or synthetic rubber or silicone.
  • one of the two connection parts may be slidably connected with the tubular part and the other of the two connection parts may be fixedly connected with the tubular part.
  • At least one sealing member such as an O-ring or a chevron seal, may be arranged between the slidable connection part and the tubular part.
  • the present invention may further relate to an annular barrier system comprising:
  • the system may further comprise an inflow control section.
  • system may comprise a second annular barrier, wherein the inflow control section is arranged between the two annular barriers.
  • the present invention may further relate to a method of placing an annular barrier according to the invention in an annulus, the method comprising the steps of:
  • the method of placing an annular barrier may further comprise the step of pressurising the well tubular structure in order to provide the pressurised fluid for expanding the sleeve.
  • the method of placing an annular barrier may comprise the step of placing a pressure tool in the vicinity of the annular barrier to expand the sleeve by providing a pressurised fluid locally in the well tubular structure.
  • said method may comprise the step of opening the inflow control section.
  • the present invention may further relate to a zone isolation method for providing and maintaining zone isolation between a first zone and a second zone of the borehole, comprising the steps of:
  • Annular barriers 1 are typically mounted into a well tubular structure, such as a production casing, before lowering the well tubular structure 300 into the borehole downhole.
  • the well tubular structure 300 is constructed by well tubular structure parts assembled as a long well tubular structure string.
  • the annular barriers 1 are mounted between the well tubular structure parts when mounting the well tubular structure string.
  • the annular barrier 1 is used for a variety of purposes, all of which require that an expandable sleeve 3 of the annular barrier 1 is expanded so that the sleeve abuts the inside wall 101 of the borehole.
  • the annular barrier 1 comprises a tubular part 2 surrounded by the expandable sleeve 3.
  • the unexpanded sleeve has a cylindrical shape and at its ends it is connected with the tubular part.
  • the expandable sleeve 3 is expanded by letting pressurised fluid through an expansion opening 9 of the tubular part into an annular barrier space 6 between the expandable sleeve 3 and the tubular part 2.
  • the tubular part 2 is connected with the well tubular structure parts, e.g. by means of a thread connection, and forms part of the well tubular structure 300.
  • the tubular part 2 and the well tubular structure parts together form the inside wall 301 of the well tubular structure 300, enclosing an inside space 302 of the well tubular structure.
  • the expandable sleeve 3 may be expanded by pressurising the inside space 302 fully or partly opposite the expansion opening 9 of the tubular part 2.
  • the annular barrier 1 furthermore has a first diaphragm 4 arranged in the annular barrier space 6, 7, which divides the annular barrier space into a barrier compartment 7 and an expansion compartment 6.
  • the expansion compartment 6 is in fluid communication with an inside 302 of the tubular part 2 through an expansion opening 9, and the barrier compartment 7 is in fluid communication with the borehole 100 through a first barrier opening 10.
  • the annular barrier 1 of Fig. 1 is shown as a cross-section along a longitudinal extension of the expandable sleeve 3 and in its unexpanded and relaxed position, and the line 22 is the centre line 22 of the annular barrier 1.
  • the centre line indicates a rotation symmetry around this line, such as the tubular part 2 in Fig. 1 being a cylinder in three dimensions.
  • pressurised fluid is injected into an expansion opening 9 expanding a cavity referred to as the expansion compartment 6 between the expandable sleeve 3 and the first diaphragm 4 of the annular barrier 1, so that the first diaphragm 4 and the expandable sleeve 3 are expanded.
  • the first diaphragm 4 follows the shape of the expandable sleeve 3 during expansion of the sleeve, as shown in Fig. 2 .
  • the pressurised fluid used to expand the annular barrier may either be pressurised from the top of the borehole 100 and fed through the well tubular structure 300, or be pressurised in a locally sealed off zone in the well tubular structure.
  • the pressurised fluid having an expansion pressure P expansion is injected (illustrated by an arrow) into the expansion compartment until the expandable sleeve 3 abuts the inside wall 101 of the borehole, which is shown in Fig. 2 .
  • the expandable sleeve 3 and the first diaphragm 4 are connected with the tubular part 2 using a connection part 12 at each end 31, 32 of the expandable sleeve.
  • the annular barrier 1 When the annular barrier 1 has been expanded using a pressurised fluid and abuts the inside of the borehole wall 101, the annular barrier provides a seal between a first zone 102 and a second zone 103 of the borehole.
  • the first zone 102 is on one side of the annular barrier 1 and the second zone 103 is on the other side of the annular barrier 1.
  • the annular barrier 1 When the pressure P expansion of the pressurised fluid is released in order to start production, the annular barrier 1 must be capable of withstanding a certain pressure P100 from the borehole 100 in order to prevent a collapse which would lead the barrier to become leaky.
  • the annular barrier 1 is used to seal off a production zone 400 (shown in Fig. 17 ), and a pressure P400 in the production zone might build up inside the production zone 400 when a fluid, such as oil, starts to enter the production zone 400 from the surrounding formation 200.
  • a fluid such as oil
  • the annular barrier 1 comprises a barrier compartment 7 which is in fluid communication with the borehole 100 through a first barrier opening 10, and since the barrier space 7 is in fluid communication with the first zone 102 of the borehole, the pressure P7 in the barrier compartment will build up as fluid flows from the first zone 102 and into the barrier compartment 7 (illustrated by an arrow), equalising the pressure in the barrier compartment 7 with the pressure in the first zone P102.
  • the first diaphragm 4 ensures that the first zone pressure P102 is sealed from the inside 302 of the well tubular structure 300.
  • the pressure increases equivalently inside the barrier compartment 7, and therefore, the expandable sleeve 3 will not be exposed to an increased difference in pressure between P102 and P7, causing the annular barrier to break its seal between the first zone 102 and the second zone 103 of the borehole.
  • the diaphragm In order for a diaphragm to withstand the pressure exerted on the diaphragm, it has to be made from a deformable material so that it can be deformed and abut either the expandable sleeve or the tubular part in the annular barrier 1.
  • the diaphragm is made of a material being more flexible and/or deformable than the material of the expandable sleeve 3 and/or the tubular part 2.
  • a diaphragm is typically much thinner than the expandable sleeve 3 and the tubular part 2 and is therefore incapable of withstanding the pressures without being supported by an abutting element, such as the tubular part 2 or the expandable sleeve 3.
  • the diaphragms may abut each other, the outermost diaphragm being supported by an abutting element, such as the tubular part 2 or the expandable sleeve 3.
  • the deformation of a diaphragm material may be elastic, plastic or a combination thereof.
  • the deformation of both diaphragms and sleeves may also be referred to as expansion or expandable, since compared to the relaxed position, the material of the sleeve and diaphragms will be expanded during use.
  • Fig. 3 shows a situation in which the first zone pressure P102 has exceeded the pressure P302 of the inside of the well tubular structure 300. Then, fluid is entering the barrier compartment 7 from the first zone 102 through the first barrier opening 10, leading to pressure equalisation between the first zone pressure P102 and the barrier compartment pressure P7 and furthermore forcing the first diaphragm towards the tubular part 2.
  • Fig. 4 shows the first diaphragm 4 in an intermediate position, which illustrates a typical situation during pressure equalisation when fluid is flowing from the first zone 102 of the borehole and into the barrier compartment 7 before the first diaphragm 4 abuts the tubular part 2.
  • the diaphragms and the sleeve may be connected with the tubular part 2 by means of a connection part 12.
  • the connection part may be connected with the sleeve and the diaphragms by means of welding or thread connections.
  • the expandable sleeve 3 is at its ends connected with a connection part 12.
  • the expandable sleeve 3 shortens in length, which is why one of the two connection parts is slidably connected with the tubular part and provided with sealing members 20 which may be arranged in grooves.
  • the other of the two connection parts is fixedly connected with the tubular part.
  • the expandable sleeve 3 of the annular barrier 1 When the expandable sleeve 3 of the annular barrier 1 is expanded, the diameter of the sleeve is expanded from its initial unexpanded diameter to a larger diameter.
  • the expandable sleeve 3 has an outside diameter D and is capable of expanding to an at least 10% larger diameter, preferably an at least 15% larger diameter, more preferably an at least 30% larger diameter than that of an unexpanded sleeve.
  • the expandable sleeve 3 has a wall thickness t which is thinner than a length L of the expandable sleeve, the thickness preferably being less than 25% of the length, more preferably less than 15% of the length, and even more preferably less than 10% of the length.
  • the expandable sleeve 3 of the annular barrier 1 may be made of metal, polymers, an elastomeric material, silicone, or natural or synthetic rubber.
  • a section 14 of the sleeve 3 In order to increase the thickness of a section 14 of the sleeve 3, additional material is applied onto an outer face 33 of the expandable sleeve, e.g. by adding welded material onto the outer face.
  • This section 14 is also referred to, in some embodiments, as a reinforcement ring 14.
  • the thickness of the section 14 of the sleeve 3 is increased by fastening a ring-shaped part onto the sleeve.
  • the ring-shaped part is the section 14 and is fastened to the inner surface by means of welding or a similar suitable fastening process.
  • the thickness of the section 14 of the sleeve 3 is facilitated using a varying thickness sleeve 3.
  • a sleeve 3 of varying thickness techniques such as rolling, extrusion or die-casting may be used.
  • the annular barrier of Fig. 5 has a first diaphragm 4 and a second diaphragm 5, wherein the first 4 and second 5 diaphragms divide the annular barrier space 6, 7 into the first barrier compartment 7, a second barrier compartment 8 and the expansion compartment 6.
  • first 4 and second 5 diaphragms divide the annular barrier space 6, 7 into the first barrier compartment 7, a second barrier compartment 8 and the expansion compartment 6.
  • one more diaphragm may be arranged inside the annular barrier 1.
  • a production zone 400 on one side of the annular barrier is a first zone 102 of the borehole with a first zone pressure P102, and on the other side of the annular barrier is the second zone 103 of the borehole, not forming part of the production zone 400.
  • the second zone pressure P103 suddenly increases substantially may be due to a gas leak further down the borehole 100, and the annular barrier 1 may suddenly experience an unexpected high pressure from the second zone pressure P103 even though the barrier was set up to seal a high production zone pressure P400.
  • the second diaphragm 5 is provided in the annular barrier 1.
  • the expansion compartment 6 is in fluid communication with an inside 302 of the well tubular structure 300 through an expansion opening 9, and the first barrier compartment 7 is in fluid communication with the first zone 102 of the borehole through a first barrier opening 10, and the second barrier compartment 8 is in fluid communication with the second zone 103 of the borehole through a second barrier opening 11.
  • the second zone pressure P103 builds up as shown in Fig. 7 , fluid will flow (illustrated by an arrow) into the second barrier compartment 8, forcing the first diaphragm to abut the expandable sleeve 3 and the second diaphragm 5 to abut the tubular part 2, thereby obtaining the second zone pressure P103 inside the annular barrier 1.
  • the annular barrier 1 When the pressures on both sides of the expandable sleeve 3 are substantially equal, the annular barrier 1 will be capable of withstanding high pressures and still abut the inside of the borehole wall to make a tight seal, since the annular barrier 1 can maintain the same pressure inside the annular barrier as the highest pressure experienced by the annular barrier from the outside of the annular barrier 1.
  • Fig. 5 shows the unexpanded state of the annular barrier 1.
  • Fig. 6 shows an expanded state of the annular barrier 1, where a pressurised fluid (illustrated by an arrow) is injected through the expansion opening 9 in order to force the expandable sleeve to abut the inside of the borehole 101.
  • a pressurised fluid illustrated by an arrow
  • FIG. 7 shows the situation in which the second zone pressure P103 is the highest pressure, thereby forcing the second diaphragm 5 to abut the expandable sleeve 3 and the first diaphragm 4 to abut the tubular part 2.
  • Fig. 8 shows the situation in which the first zone pressure P102 is the highest, thereby forcing a fluid to enter the first barrier compartment 7 from the first zone 102 of the borehole 100 (illustrated by the arrow).
  • the first diaphragm 4 is forced towards the tubular part in that the first diaphragm 4 is forced to abut the second diaphragm 5 which is forced to abut the tubular part 2.
  • Fig. 9 shows the first and second diaphragms 4, 5 in intermediate positions, not abutting each other, nor abutting the expandable sleeve 3 or the tubular part 2.
  • the annular barrier can withstand a higher outside pressure from either the first zone 102 or the second zone 103.
  • annular barrier diaphragms By using diaphragms instead of valves, the lifetime of an annular barrier may be increased significantly. A typical lifetime of valves in downhole environments is around 5 years, and valve systems will then have to be replaced. Annular barriers are exposed to very few pressure changes, typically not much more than 20 pressure changes, during the lifetime of an annular barrier. Therefore, annular barrier diaphragms can maintain their functionality for many years due to the absence of moving parts. The lifetime of the annular barrier using diaphragms will therefore only be limited by fatigue in the diaphragm materials, which, given the very few pressure changes, is a minor problem.
  • a typical annular barrier has a length of 5 to 15 metres, and preferably 10 metres, to match standard well tubular parts and equipment for inserting well tubular parts into boreholes.
  • the difference between the diameter of an expanded and an unexpanded annular barrier may typically be less than 10 centimetres, and even less than 5 centimetres, which over a length of 5 to 15 metres applies very little stress to the diaphragm.
  • the diaphragms are shaped as hollow cylinders fastened at their ends to the connection parts and surrounding the tubular part which is surrounded by the expandable sleeve.
  • Figs. 10A and 10B show the annular barrier 1 having two diaphragms, and each diaphragm is shaped as a hollow cylinder fastened at its one end to a connection part and at its other end to the tubular part 2.
  • the tubular part 2 has an expansion opening 9 arranged in a middle part, and the ends of the diaphragms are connected with the tubular part 2 on opposite sides of the expansion opening 9 when seen in the cross-sectional.
  • the diaphragms are welded to the tubular part, and at its other ends the diaphragms are connected with the connection parts by means of a thread connection.
  • the diaphragms may also be welded to the connection parts.
  • both the first barrier opening 10 and the second barrier opening 11 penetrate the connection part, the expansion sleeve 3 and the diaphragm providing fluid communication between the first zone 102 and the first barrier compartment and the second zone 103 and the second barrier compartment, respectively.
  • the first barrier opening 10 and the second barrier opening 11 penetrate only the connection part. In this way, the expandable sleeve 3 and the diaphragms are not penetrated, resulting in a more simple design.
  • the diaphragms in Figs. 10A and 10B may also be manufactured from one cylinder fastened at its ends to the connection parts and at a middle part welded to the tubular part, and subsequently, the expansion openings are provided therein through the tubular part.
  • connection parts do not necessarily have a sealing member 20 for providing a seal towards the tubular part, since the diaphragms provide such a seal so that fluid from the first or second zone 102, 103 does not enter into the well tubular structure.
  • the annular barrier of Fig. 11 also has two diaphragms; a first diaphragm connected at its ends to the connection part and a second diaphragm which in its one end is connected with one connection part and in its other end is connected with the tubular part 2 near the expansion opening 9.
  • the expansion opening 9 is provided in the tubular part 2 near the connection part in which only the first diaphragm is fastened. Thus, the expansion opening 9 is not arranged in the middle part of the tubular as in Fig. 10A and 10B .
  • Figs. 10A and 10B show a first barrier opening 10 and a second barrier opening 11
  • the barrier openings may be replaced by a non-sealing connection between the connection part and the tubular part.
  • the first barrier connection may be replaced in the same way by a leaky connection between the connection part and the tubular part.
  • the first diaphragm shown in Fig. 11 allows that a completely tight sealing connection is not needed between the connection part 12 and the tubular part 2 at the end of the annular barrier 1 where the first diaphragm 4 is connected to the connection part.
  • the first diaphragm arranged in this way results in this connection part possibly being the sliding end of the annular barrier, thereby complying with the need for a movable end due to the shortening of the sleeve during expansion while still providing a seal between the outside pressure and the inside of the well tubular structure, and then the other end can be fixedly connected to the tubular part 2.
  • the first diaphragm of Fig. 11 has the ability to expand substantially the entire volume of the annular barrier 1, equivalently to if it was connected with both connection parts due to the fact that its connection with the tubular part 2 can be arranged so close to the connection part in which only the second diaphragm is connected that the first diaphragm can be expanded in substantially the entire volume of the annular barrier 1.
  • the annular barrier has a restriction element 13 in the form of a projecting part 13 as a prolongation of each of the connection parts and overlapping the expandable sleeve 3.
  • the connection part 12 is welded together with the expandable sleeve 3 in a connection.
  • the projecting part 13 of the connection part 12 increasingly tapers towards the expandable sleeve 3 until the projecting part 13 does not overlap the expandable sleeve 3 anymore and the expandable sleeve 3 is free to expand.
  • a spacer 16 is separating the expandable sleeve 3 from the first diaphragm 4 to allow fluid to pass between them.
  • Spacers 16 can be used to impose a gap between the expandable sleeve 3, the first 4 and second diaphragm 5 and the tubular part 2.
  • the spacer may be flat or a step structure.
  • the spacer may be a separate part or an integral part of the expandable sleeve, the diaphragms, the tubular part, the connection part or the welding 21.
  • the projecting part 13 has the purpose of restricting the expansion of the expandable sleeve 3 so that the curvature of the expandable sleeve 3 when expanded is more S-shaped when seen in the cross-sectional view along the longitudinal extension of the sleeve. It is hereby obtained that the expandable sleeve 3 does not fracture during expansion and that the cross-sectional profile of the expandable sleeve 3 is capable of withstanding a higher collapse pressure than a known annular barrier. Thus, the expandable sleeve 3 is more restricted in expanding at the first point than at the second point. Furthermore, due to the fact that the projecting part 13 may be made from a less flexible metal alloy and tapers from the connection towards the second point, the expandable sleeve 3 is less restricted in expanding along with the decreasing thickness of the projecting part.
  • the first barrier opening 10 may also be arranged directly in the expandable sleeve 3, as shown in Fig. 13 , resulting in a very simple design which is easy to manufacture and implement in existing manufacturing procedures.
  • the diaphragms, the sleeve, the connection part 12 and the tubular part 2 may be welded as best suited in a specific annular barrier.
  • the diaphragms and sleeves may be welded if the connection part is slidably connected to the tubular part, or they may be welded to the tubular part if the connection part is fixedly connected to the tubular part, etc.
  • the expandable sleeve and the diaphragm/-s may also be fastened directly to the tubular part without use of connection parts, as shown in Fig. 14 .
  • the expandable sleeve of the annular barrier may have one end fastened by means of a connection part and the other end welded directly to the tubular part together with a diaphragm.
  • both ends can be fixed by welding or both ends can be sliding along the tubular part 2.
  • an anti-collapsing element 14 is arranged on the outside of the sleeve, which element is a section 14 of the expandable sleeve and may have an increased thickness when seen in a cross-sectional view along the longitudinal extension of the sleeve, as shown in Fig. 15 .
  • this section of the sleeve is expanded less than other sections of the sleeve along a non-inclining part of the expandable sleeve in its expanded state, resulting in a corrugated shape of the sleeve, as seen in Fig. 16 .
  • Fig. 15 also shows the possibility of using a valve 19 instead of the barrier opening 10.
  • the expansion opening 9, the first barrier opening 10 and/or the second barrier opening 11 may in some embodiments be replaced by a valve to control the flow from the borehole into the barrier compartments or to control the flow from the inside of the well tubular structure 300 and into the expansion compartment 6. Also, the flow direction may be restricted using one-way valves.
  • additional material may be applied onto an inner or outer face of the sleeve, e.g. by adding welded material onto the inner face.
  • the thickness of the section of the sleeve is increased by fastening a ring-shaped part onto the sleeve.
  • the ring-shaped part is the section 14 and is fastened onto the inner surface by means of welding or similar suitable fastening process.
  • sealing elements 15 are arranged opposite the sections of the sleeve having an increased thickness.
  • the sealing elements 15 fill up the gap occurring during expansion.
  • the sealing elements 15 have a tapering or triangular cross-sectional shape.
  • annular barrier When the annular barrier is installed, it forms part of a well tubular structure, as shown in Fig. 17 , providing an annular barrier system 500.
  • the system comprises two annular barriers sealing a production zone 400.
  • the barriers are arranged in a horizontal part of the well and are seen in their expanded condition.
  • An inner ring may also be arranged between the expandable sleeve 3 and the tubular part 2 and may be welded to the connection part 12.
  • the tool may comprise a downhole tractor, such as a Well Tractor®.
  • An expansion tool may be used to expand the annular barrier and may comprise an isolation device for isolating a first section outside the passage or valve between an outside wall of the tool and the inside wall of the well tubular structure.
  • the pressurised fluid is obtained by increasing the pressure of the fluid in the isolation device.
  • the tool may also use coiled tubing for expanding the expandable sleeve 3 of an annular barrier 1 or of two annular barriers at the same time.
  • a tool with coiled tubing can pressurise the fluid in the well tubular structure without having to isolate a section of the well tubular structure.
  • the tool may need to plug the well tubular structure further down the borehole from the two annular barriers or barriers 1 to be operated.
  • the annular barrier system of the present invention may also employ a drill pipe or a wireline tool to expand the sleeve.
  • the tool comprises a reservoir containing the pressurised fluid, e.g. when the fluid used for expanding the sleeve 3 is cement, gas or a two-component compound.
  • An annular barrier 1 may also be called a packer or similar expandable means.
  • the well tubular structure can be the production tubing or casing or a similar kind of tubing downhole in a well or a borehole.
  • the annular barrier 1 can be used both between the inner production tubing and an outer tubing in the borehole or between a tubing and the inner wall of the borehole.
  • a well may have several kinds of tubing, and the annular barrier 1 of the present invention can be mounted for use in all of them.
  • the valve may be any kind of valve capable of controlling flow, such as a ball valve, butterfly valve, choke valve, check valve or non-return valve, diaphragm valve, expansion valve, gate valve, globe valve, knife valve, needle valve, piston valve, pinch valve or plug valve.
  • a ball valve such as a ball valve, butterfly valve, choke valve, check valve or non-return valve, diaphragm valve, expansion valve, gate valve, globe valve, knife valve, needle valve, piston valve, pinch valve or plug valve.
  • the expandable tubular metal sleeve 3 may be a cold-drawn or hot-drawn tubular structure.
  • the sleeve may be seamless or welded.
  • the expandable tubular metal sleeve 3 may be extruded, die-cast or rolled, e.g. hot rolled, cold rolled, roll bended etc., and subsequently welded.
  • the fluid used for expanding the expandable sleeve 3 may be any kind of well fluid present in the borehole surrounding the tool and/or the well tubular structure.
  • the fluid may be cement, gas, water, polymers, or a two-component compound, such as powder or particles mixing or reacting with a binding or hardening agent.
  • Part of the fluid, such as the hardening agent, may be present in the space before injecting a subsequent fluid into the space.

Landscapes

  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Pipe Accessories (AREA)
  • Gasket Seals (AREA)
  • Diaphragms And Bellows (AREA)
  • Measuring Fluid Pressure (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP13193384.8A 2011-01-25 2011-01-25 Barrière annulaire avec diaphragme Active EP2706188B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NO13193384A NO2706188T3 (fr) 2011-01-25 2011-01-25
EP13193384.8A EP2706188B1 (fr) 2011-01-25 2011-01-25 Barrière annulaire avec diaphragme
DK13193384.8T DK2706188T3 (da) 2011-01-25 2011-01-25 Ringformet barriere med en membran

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP13193384.8A EP2706188B1 (fr) 2011-01-25 2011-01-25 Barrière annulaire avec diaphragme
EP11152135.7A EP2479376B1 (fr) 2011-01-25 2011-01-25 Barrière annulaire avec diaphragme

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP11152135.7A Division EP2479376B1 (fr) 2011-01-25 2011-01-25 Barrière annulaire avec diaphragme

Publications (3)

Publication Number Publication Date
EP2706188A2 true EP2706188A2 (fr) 2014-03-12
EP2706188A3 EP2706188A3 (fr) 2015-04-22
EP2706188B1 EP2706188B1 (fr) 2017-10-11

Family

ID=43926892

Family Applications (3)

Application Number Title Priority Date Filing Date
EP13193384.8A Active EP2706188B1 (fr) 2011-01-25 2011-01-25 Barrière annulaire avec diaphragme
EP11152135.7A Active EP2479376B1 (fr) 2011-01-25 2011-01-25 Barrière annulaire avec diaphragme
EP13193387.1A Active EP2706189B1 (fr) 2011-01-25 2011-01-25 Barrière annulaire dotée d'une membrane

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP11152135.7A Active EP2479376B1 (fr) 2011-01-25 2011-01-25 Barrière annulaire avec diaphragme
EP13193387.1A Active EP2706189B1 (fr) 2011-01-25 2011-01-25 Barrière annulaire dotée d'une membrane

Country Status (4)

Country Link
EP (3) EP2706188B1 (fr)
DK (3) DK2706189T3 (fr)
ES (1) ES2443319T3 (fr)
NO (2) NO2706188T3 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2570587B1 (fr) 2011-09-13 2013-10-30 Welltec A/S Barrière annulaire dotée d'un manchon métallique de sécurité
FR2988126B1 (fr) * 2012-03-16 2015-03-13 Saltel Ind Dispositif d'isolation d'une partie d'un puits
EP2644821A1 (fr) * 2012-03-30 2013-10-02 Welltec A/S Barrière annulaire dotée d'une connexion flexible
AU2013100387B4 (en) * 2013-03-28 2013-07-11 Welltec Oilfield Solutions Ag Annular barrier
AU2013100388B4 (en) * 2013-03-28 2013-07-11 Welltec Oilfield Solutions Ag Annular barrier
AU2013100385B4 (en) * 2013-03-28 2013-09-26 Welltec Oilfield Solutions Ag Annular barrier
FR3010130B1 (fr) * 2013-08-28 2015-10-02 Saltel Ind Element tubulaire avec etancheite dynamique et son procede d'application contre la paroi d'un puits
GB201315957D0 (en) 2013-09-06 2013-10-23 Swellfix Bv Retrievable packer
EP2963233A1 (fr) * 2014-06-30 2016-01-06 Welltec A/S Système de fond de puits
EP3255240A1 (fr) * 2016-06-10 2017-12-13 Welltec A/S Système de chevauchement de fond de trou
CN107916908A (zh) * 2017-12-11 2018-04-17 中国石油天然气股份有限公司 一种管内复合密封机构
EP3584403A1 (fr) * 2018-06-19 2019-12-25 Welltec Oilfield Solutions AG Barrière annulaire
EP3647532A1 (fr) 2018-10-30 2020-05-06 Welltec Oilfield Solutions AG Barrière annulaire
CN109931264B (zh) * 2018-11-26 2024-05-14 珠海格力电器股份有限公司 一种变容控制机构、压缩机和空调器

Citations (1)

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Publication number Priority date Publication date Assignee Title
US20060027371A1 (en) 2004-08-04 2006-02-09 Read Well Services Limited Apparatus and method

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Publication number Priority date Publication date Assignee Title
US2859828A (en) * 1953-12-14 1958-11-11 Jersey Prod Res Co Down hole hydraulic pump for formation testing
US2828823A (en) * 1955-07-07 1958-04-01 Exxon Research Engineering Co Reinforced inflatable packer
US2959226A (en) * 1956-10-26 1960-11-08 Jersey Prod Res Co Inflatable packer formation tester
FR2791732B1 (fr) * 1999-03-29 2001-08-10 Cooperation Miniere Et Ind Soc Dispositif d'obturation d'un puits de forage
US7234533B2 (en) * 2003-10-03 2007-06-26 Schlumberger Technology Corporation Well packer having an energized sealing element and associated method

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
US20060027371A1 (en) 2004-08-04 2006-02-09 Read Well Services Limited Apparatus and method

Also Published As

Publication number Publication date
ES2443319T3 (es) 2014-02-18
NO2706188T3 (fr) 2018-03-10
DK2706188T3 (da) 2017-11-20
EP2706188B1 (fr) 2017-10-11
EP2706189B1 (fr) 2017-10-18
EP2706189A2 (fr) 2014-03-12
EP2706189A3 (fr) 2015-04-08
EP2479376A1 (fr) 2012-07-25
DK2706189T3 (da) 2017-11-20
DK2479376T3 (da) 2014-01-13
NO2706189T3 (fr) 2018-03-17
EP2706188A3 (fr) 2015-04-22
EP2479376B1 (fr) 2013-12-25

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