• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    VALVE AND METHOD TO CONTROL THE FLOW OF A FLUID, AND, PRODUCTION TUBE. The invention relates to a method and apparatus for controlling the flow of a fluid. The fluid comprises a liquid phase and a dissolved gas phase. The fluid passes through a valve, the valve comprising a fluid inlet and a movable body located in a flow path through the valve, the movable body being arranged to move freely in relation to the inlet opening to vary the flow in the area through from which the fluid flows through the Bernoulli effect. The dimensions of the valve are such that the flow of fluid beyond the moving body causes a pressure drop to fall below the bubble point of the gas phase in the liquid phase, thereby increasing the flow of fluid through the valve.
    公开号:BR112013017731B1
    申请号:R112013017731-4
    申请日:2011-09-29
    公开日:2021-01-12
    发明作者:Haavard Aakre；Vidar Mathiesen；Bjørnar Werswick
    申请人:Statoil Petroleum As；
    IPC主号:
    专利说明:

    [0001] [0001] The present invention relates to an autonomous valve arrangement for controlling a flow of fluid. BACKGROUND OF THE INVENTION
    [0002] [0002] Devices to recover gas and oil from long horizontal or vertical wells are known from patent publications 4,821,801, 4,858,691, 4,577,691 and patent publication GB no. 2169018. These known devices comprise a perforated drain pipe, for example, with a filter to control the sand around the pipe. A considerable disadvantage with the known devices for producing oil and / or gas in highly permeable geological formations is that the pressure of the drain pipe increases exponentially in the upstream direction due to the flow friction of the pipe. As the differential pressure between the reservoir and the drain pipe decreases upstream, as a result, the amount of oil and / or gas flowing from the liner to the drain pipe will decrease accordingly. The total oil and / or gas produced by this means will therefore be low. With thin oil zones and highly permeable geological formations, there is also a high risk of invasion, that is, undesirable water or gas flow into the downstream drain pipe, where the speed of oil flow from the reservoir to the pipe is at maximum.
    [0003] [0003] According to World Oil, vol 212, N. 11 (11/91), pages 73 - 80, it is known to divide a drain pipe into sections with one or more inlet restriction devices, such as slide liners or devices strangulation. However, this reference basically deals with the use of entry control to limit the entry fee to borehole zones above and thereby prevent or reduce water and / or gas invasion.
    [0004] [0004] WO-A-9208875 describes a horizontal production tube comprising a plurality of production sections connected by mixing chambers with a larger internal diameter than the production sections. The production sections comprise an external knurled coating that can be considered to perform a filtration action. However, the sequence of sections of different diameters creates turbulence in flow and prevents the running of intervention tools operated along the outer surface of the production tube.
    [0005] [0005] During the extraction of oil or gas from geological production formations, fluids of different qualities, that is, oil, gas, water (and sand) are produced in different quantities and mixtures, depending on the property or quality of the formation. None of the aforementioned known devices is capable of differentiating and controlling the entry of oil, gas or water based on their respective composition and / or quality.
    [0006] [0006] Devices disclosed in WO2009 / 088292e WO 2008/004875 are robust, can withstand great forces and high temperatures, can prevent well-reservoir differential pressures (differential pressure), do not need energy supply, can withstand sand production, and they are still reliable, simple and very cheap. However, several improvements can nevertheless be made to increase the performance and useful life of the mentioned device in which many of the different modalities of WO2009 / 088292 and WO2008 / 004875 describe a disk or plate as a movable valve body.
    [0007] [0007] A potential problem with a disc or plate as a moving body is erosion in the moving body. This is attributed to a very high fluid speed between the internal seat and the movable valve body. The fluid is subjected to abrupt changes in its flow direction at this location. As there are always particles in the fluid flow, even if sand sieves are installed, such particles will cause erosion. The erosion problem exists both with and without the use of a valve stagnation chamber. SUMMARY OF THE INVENTION
    [0008] [0008] The problems presented are solved by an autonomous valve arrangement provided with a flow control device according to the dependent claims. The present invention relates to an input control device that is self-adjusting, or autonomous, and can easily be adapted to the wall of a production pipe. The device also allows the use of intervention tools, since it does not extend outside the periphery of the production tube. The device is designed to “differentiate” oil and / or gas and / or water and is able to control the flow or inlet of oil or gas, depending on the fluid for which a flow control like this is required.
    [0009] [0009] According to a preferred embodiment, the invention relates to a self-adjusting, or autonomous, valve or flow control device for controlling the flow of a fluid from one space or area to another. The valve is particularly suitable for controlling the flow of fluid from a reservoir and to a production pipe from a well in the oil and / or gas reservoir, between an inlet port on one inlet side to at least one outlet port in an output side of the flow control device. A production pipe like this can include a drain pipe comprising at least two sections, each of which includes one or more inlet control devices.
    [0010] [0010] A main portion of the outlet hole is connected in a recess in a remote located portion of the central opening relative to a plane through the second surface. In this way, a flow from the outlet port towards the inlet port will act on the second surface of a remote valve body of the inlet port. A flow of fluid like this will cause the valve body to move towards the opening of the inlet port to close the valve.
    [0011] [0011] The dimensions of the valve are such that the flow of fluid beyond the moving body causes a pressure drop. The fluid typically comprises a liquid with a dissolved gas. The dissolved gas has a “bubble point”, a temperature or pressure at which the gas will start to come out of the liquid's solution. It was observed that, if the pressure drop is sufficient for the gas bubble point to be reached, dissolved gas comes out of solution with the liquid. This, in turn, increases the flow through the valve.
    [0012] [0012] In a first example, a valve such as the one described above may have an outlet orifice comprising multiple openings, each connected to the recess at a location on the outer peripheral surface of the valve body, or radially outside it. In this example, the multiple openings are each connected to the recess in the radial direction of the flow control device. The multiple openings can each be connected to the recess, so that each opening faces the outer peripheral surface of the valve choir. The openings are preferably arranged to be distributed at equal distances from each other around the circumference of the valve body. The central axis of each opening is arranged in a plane located remote from the central opening in relation to a plane through the second surface. In this way, said central axes extend radially inside the recess towards the center of the valve body and can be located inside or outside the plane through the second surface. Consequently, a flow from the multiple openings towards the inlet port acts on the second surface of the remote valve body of the inlet port, causing the body to move to its closed position.
    [0013] [0013] In a second example, a valve like the one described may have an outlet orifice comprising multiple openings, each connected to the recess at a location on the outer peripheral surface, or radially outside of it, of the valve body, as previously described. In this example, the multiple openings are each connected to the recess in the axial direction of the flow control device, parallel to the central axis of the inlet opening. The multiple openings can each be connected to the recess, so that each opening faces at least a portion of the outer peripheral section of the second surface of the valve body. The openings are preferably arranged to be distributed at equal angles to each other with respect to the center of the valve body, at substantially the same distance from said center. The multiple openings are each connected to the recess on the opposite side of the valve body from the inlet port. The central axis of each opening is connected to the recess so that each one matches or passes radially outside the outer peripheral surface of the valve body. Consequently, a flow from the multiple openings towards the inlet port will act on the second surface of the remote valve body of the inlet port, causing the valve body to move to its closed position.
    [0014] [0014] The valve body described in any of the examples presented is supported by at least three projections that extend axially inside the recess to support the second surface of the valve body. The projections are provided to support the valve body when it is in its non-activated resting position. The number of projections and the size of the surfaces that make contact with the second surface of the valve body are chosen to avoid or minimize adhesion between the projections and the movable valve body when the movable valve body is actuated.
    [0015] [0015] In a third example, a valve such as the one described may have an outlet port comprising an opening connected to the recess on the opposite side of the valve body relative to the inlet port. This opening has a cross-sectional area greater than or equal to that of the second surface of the valve body. In this case, the outlet port substantially comprises a single opening. The flow area downstream of the valve body is only interrupted by the projections that extend inside to support the valve body.
    [0016] [0016] A valve body as described in the third example is supported by at least three projections extending radially inside the recess to support the second surface of the valve body. The projections are provided to support the valve body when it is in its non-activated resting position. The number of projections and the size of the surfaces that make contact with the second surface of the valve body are chosen to avoid or minimize adhesion between the projections and the valve body when the valve body is actuated.
    [0017] [0017] The valves described herein may have a valve body comprising a circular disc with a predetermined thickness. In this case, both the first surface and the second opposite surface can be flat, or substantially flat. In general, the recess surface facing said first surface of the valve body has a surface substantially facing the shape of the valve body.
    [0018] [0018] Alternatively, the valve body may have a first surface with a substantially conical shape with the apex facing the inlet port. The second opposite surface of the valve body can be flat, or substantially flat. The first recess surface facing said first surface has a substantially conical shape conforming to the shape of the valve body.
    [0019] [0019] A valve arrangement for a production pipe, as previously described, will typically have an inlet orifice diameter of 2-12 mm. The diameter of the disc is typically selected 3-5 times larger than the diameter of the inlet hole. The diameter of the recess in the assembled valve body is inherently larger in order to allow movement of the disc and keep the disc in position. It is possible to provide means for maintaining the disc in a centralized position, but typically the fluid flow beyond the disc will attempt to distribute the fluid evenly through all the outlet holes and thereby center the disc.
    [0020] [0020] The total height of the valve arrangement depends on the wall thickness of the production pipe on which it is mounted. It is desirable that the valve does not extend outside the outside diameter of the production pipe in order to allow intervention tools to be operated along the outside surface of the production pipe. At the same time, it is desirable that the valve does not extend further into the inside diameter of the production tube than necessary, as this may introduce a restriction of flow and turbulence. Consequently, it is desirable to select the disc thickness as small as possible. The dimensions of the disc (thickness / diameter) and the material used are selected to maintain mechanical stability of the disc, so that it does not flex or deform when subjected to high pressure. Also, the disc has to be robust enough to withstand erosion and fatigue over time. Similarly, the height of the recess containing the disc within the assembled valve body is limited by the height of the assembled valve body. The distance between the disc and the upper surface of the recess, containing the inlet orifice, is preferably selected so that the total flow area at the periphery of the disc is at least equal to the total flow of the orifice or outlet holes.
    [0021] [0021] The number or position of the outlet orifices of the mounted valve body is chosen so that the total flow area of the orifice or outlet orifices is therefore selected equal to or greater than the flow area of the inlet orifice. However, because of other factors, such as robustness of the valve and various particles entering the valve from the well, the total flow area of the orifice or outlet orifices is often made considerably larger than the area of the inlet orifice.
    [0022] [0022] In a further aspect of the invention, a method is provided for controlling the flow of a fluid comprising a liquid phase and a dissolved gas phase. The fluid can pass through a valve. The valve comprises a fluid inlet and a movable body located in a flow path through the valve. The movable body is arranged to move freely with respect to the opening of the inlet to vary the area of direct flow through which the fluid flows through the Bernoulli effect. The dimensions of the valve are such that the flow of fluid beyond the moving body causes a pressure drop below the bubble point of the gas phase in the liquid phase, thereby increasing the flow of fluid through the valve. BRIEF DESCRIPTION OF THE DRAWINGS
    [0023] [0023] The invention will be described in detail with reference to the attached Figures. It should be understood that the drawings are made for illustration purposes only and should not be used as a definition of the limits of the invention, for which reference should be made to the attached claims. It should be further understood that the drawings are not necessarily to scale and that, unless otherwise indicated, they are merely intended to illustrate schematically the structures and procedures described herein.
    [0024] [0024] Figure 1 shows a production pipe provided with an autonomous valve arrangement according to the invention;
    [0025] [0025] Figure 2A shows an autonomous valve arrangement provided with a flow control device according to a first embodiment of the invention;
    [0026] [0026] Figure 2B shows an autonomous valve arrangement provided with a flow control device according to a second embodiment of the invention;
    [0027] [0027] Figure 3 shows a partially sectioned view of a second valve body used in the modalities of Figures 2A and 2B;
    [0028] [0028] Figure 4 shows a partially sectioned view of a second alternative valve body according to the invention;
    [0029] [0029] Figure 5 shows a partially sectioned view of a second additional alternative valve body according to the invention; and
    [0030] [0030] Figure 6 shows a schematic diagram of the different flow areas and pressure zones in a valve according to the invention. DETAILED DESCRIPTION OF THE INVENTION
    [0031] [0031] An oil reservoir typically comprises liquid oil and gas. Although a gas pocket can be located above the liquid oil in the reservoir, gas is typically also dissolved in the liquid oil. As the temperature increases, and / or the pressure is reduced, the gas involved may start to come out of solution. The bubble point occurs at a certain temperature and pressure, and is the point at which the first gas bubble comes out of solution. As oil in a reservoir is typically saturated with gas, it is very close to the bubble point.
    [0032] [0032] When oil passes from a reservoir to a production pipe, the valve is designed in such a way that the reduction in pressure in the oil causes it to fall below its bubble point. The drop below the bubble point causes the oil to evolve, thereby increasing the density of liquid and effectively increasing the flow of liquid.
    [0033] [0033] Figure 1 shows a production tube 11 provided with an opening in which an autonomous valve arrangement 12 according to the invention. Valve arrangement 12 is particularly suitable for controlling the flow of fluid from an underground reservoir to a production pipe 11 from a well in the oil and / or gas reservoir, between an inlet orifice 13 on an inlet side for at least an outlet port (not shown) on an outlet side of the autonomous valve arrangement. The component part that makes up the entire autonomous valve arrangement is subsequently referred to as a "valve arrangement", while the active components required to control the flow are usually referred to as a "flow control device". The inlet side of the autonomous valve arrangement 12 is located in the opening on the outer side 14 of the production pipe 11, while the outlet side is located on the inner side 15 of the production pipe 11. In the subsequent text, terms such as "internal" and "external" are used to define positions relative to the internal and external surface of the valve arrangement when mounted on a tube 11 (see Figure 1).
    [0034] [0034] Figure 2A shows an autonomous valve arrangement 20 provided with a flow control device according to a first embodiment of the invention. The valve arrangement 20 comprises an annular body 21 in which the flow control device is contained. The annular body 21 is mounted in an opening through a production pipe (see Figure 1) by any suitable device, such as a pressure fitting or threaded connection. A first valve body 22 is located in a concentric enlarged hole in the annular body 21. An external flange in the first valve body 22 is brought into contact with a radial surface of the hole in the annular body 21 in order to position the first valve body 22 in the axial direction of the annular body 21. The first valve body 22 is locked in place by means of a locking ring 24 which acts on the opposite side of said external flange and fixed in position in a circumferential notch on the internal surface of the hole in the annular body 21. A liquid seal is provided between the annular body 21 and the outer flange on the first valve body 22. The liquid seal comprises an O-ring located in a circumferential notch in the recess and in contact with the outer peripheral surface the outer flange of the first valve body.
    [0035] [0035] An axial inlet port 23 is provided through the center of the first valve body 22. The inlet port 23 extends from an external surface of the valve arrangement to the interior of a recess 26 in the flow control device. The recess 26 is formed in a space between the first valve body 22 and a second valve body 27. In the example shown in Figure 2A, the second valve body 27 has a general cup shape with an opening facing the first body of valve 22. The second valve body 27 is placed in sealing contact with the first valve body 22 and is attached to the first valve body 22 by means of a threaded connection. The screw connection is located in an inner section of the first valve body 22, below the outer flange. The second valve body 27 is provided with a number of radial outlet holes 30 extending from the recess 26 radially outwardly to an annular space 31 between the annular body 21 and the second valve body 27. This annular space 31 is fluidly connected with the internal volume of the tube on which the valve arrangement is mounted.
    [0036] [0036] The second valve body 27 can be attached to the first valve body 22 by any suitable connection device, but is preferably releasably attached by a threaded connection, screws or bayonet connection. An additional alternative is to attach the second valve body 27 to the internal surface of the annular body 21, while still maintaining sealing contact with at least the first valve body 22.
    [0037] [0037] The valve arrangement further comprises a freely movable valve body 28 located in the recess 26 in the flow control device, said movable valve body 28 has a first surface 28a facing inlet port 23 and a second surface 28b located remote from the inlet port 23. Similarly, the recess 26 has a first surface 26a facing the first surface 28a of the movable valve body 28, and a second surface 26b facing the second surface 28b of the movable valve body 28. The movable valve body 28 comprises a circular disk with a predetermined thickness and extending to an outer periphery 28c spaced from an adjacent side wall 26c of the recess 26. In this case, both the first surface and the second opposite surface are flat, or substantially flat. For this and any other embodiment described in the text, the recess surface facing said first surface of the movable valve body has a surface conforming to the shape of the movable valve body. The movable valve body 28 is supported by numerous projections 29. The projections 29 define a lower position for the movable valve body 28 and prevent said body 28 from adhering to the second surface 26b of the recess 26 during operation of the control device. flow. Consequently, the components that make up the flow control device are the first and second valve bodies 22, 27 and the freely movable valve body 28.
    [0038] [0038] In operation, the inlet port is connected to the recess by a central opening or slot, in which the fluid is arranged to flow into the recess through the central opening. The fluid is then arranged to flow out of the recess radially through a first surface of the valve body, said first surface facing the central opening, and in addition to the outer peripheral surface of said valve body towards at least one orifice. about to leave.
    [0039] [0039] The present invention explores the effect of Bernoulli's precept that the sum of pressure, static, dynamic pressure and friction is constant along a flow line:
    [0040] [0040] With reference to the valve shown in Figure 2a, when the movable valve body or disc 28 is subjected to a fluid flow, which is the case with the present invention, the pressure difference on the disc 28 can be expressed as follows:
    [0041] [0041] Because of the lower viscosity, a fluid such as gas will flow more quickly along the disc towards its outer periphery 28c. This results in a reduction in pressure in area A2 above the disc, while the pressure acting on area A3 below disc 28 remains unchanged. As disc 28 is freely movable within the recess, it will move upwards and thereby narrow the flow path between disc 26 and the first surface 26a of recess 26. Thus, disc 28 moves downwards or upwards depending on viscosity of the fluid flowing through it, whereby this principle can be used to control the flow of fluid through the device.
    [0042] [0042] Additionally, the pressure drop through a traditional input control device (ICD) with fixed geometry will be proportional to the dynamic pressure:
    [0043] [0043] In addition, when a liquid with a trapped gas, such as oil, from a reservoir, passes over disk 28, the pressure reduces. The oil is already saturated with gas, and thus approaching its bubble point. The reduction in pressure causes trapped gas to evolve from the oil, meaning that the resulting oil slightly increases in density. This, together with pressure differences caused by the evolved gas, has the effect of pulling the disc 28 further out of the inlet port 23, which increases the oil flow through the autonomous valve arrangement 20.
    [0044] - A1, P1 é a área e pressão de entrada, respectivamente. A força (P1*A1) gerada por esta pressão tentará abrir o dispositivo de controle (mover o disco ou corpo 28 para baixo). - A2, P2 é a área e pressão na zona entre a primeira superfície 28a do disco e o rebaixo 26, onde a velocidade será máxima e, consequentemente, representa uma fonte de pressão dinâmica. A pressão dinâmica resultante tentará fechar o dispositivo de controle movendo o disco ou corpo 28 para cima à medida que a velocidade de fluxo aumenta e a pressão é reduzida. - A3, P3 é a área e pressão detrás do disco ou corpo móvel 28, entre a segunda superfície 28b do disco e o rebaixo 26. A pressão detrás do disco ou corpo móvel deve ser a mesma da pressão do poço (pressão de entrada). Isto tentará mover o corpo para cima, em direção à posição fechada do dispositivo de controle à medida que a velocidade de fluxo aumenta. [0044] During the production of oil and gas, the flow control device according to the invention can have two different applications: use it as a flow control device to reduce the entry of water or gas, or maintain a constant flow through the flow control device. When designing the control device according to the invention for different applications, such as a constant fluid flow, the different pressure areas and areas, shown in Figure 6, will impact the efficiency and direct flow properties of the device. Referring to Figure 6, the different pressure areas / zones can be divided into: - A1, P1 is the inlet area and pressure, respectively. The force (P1 * A1) generated by this pressure will try to open the control device (move the disc or body 28 downwards). A2, P2 is the area and pressure in the zone between the first surface 28a of the disc and the recess 26, where the speed will be maximum and, consequently, represents a source of dynamic pressure. The resulting dynamic pressure will attempt to close the control device by moving the disc or body 28 upward as the flow rate increases and the pressure is reduced. - A3, P3 is the area and pressure behind the disc or movable body 28, between the second surface 28b of the disc and the recess 26. The pressure behind the disc or movable body must be the same as the pressure of the well (inlet pressure) . This will attempt to move the body upward towards the closed position of the control device as the flow rate increases.
    [0045] [0045] Fluids with different viscosities will provide different forces in each zone, depending on the design of these zones, in order to optimize the efficiency and direct flow properties of the control device, the designs of the areas will be different for different applications, for example, flow constant volume, or gas / oil or oil / water flow. Consequently, for each application, the areas need to be carefully balanced and ideally designed taking into account the physical properties and conditions (viscosity, temperature, pressure, etc.) for each project situation.
    [0046] [0046] Figure 2B shows an automotive valve arrangement provided with a flow control device according to a second embodiment of the invention. The annular body 21 identical to that of Figure 2A is mounted in an opening through a production pipe (see Figure 1) by any suitable means, such as a pressure fitting or a threaded connection. A first valve body 32 located in a concentric enlarged hole in the annular body 21. The first valve body 32 is locked in place in the annular body 21 in the same manner as described with respect to Figure 2A above. An axial inlet port 33 is provided through the center of the first valve body 32. A second valve body 27 substantially identical to that of Figure 2A is attached to the first valve body 32, as previously described. The second valve body 27 is provided with a number of radial outlet holes 30 extending from the recess 26 radially outwardly to an annular space 31 between the annular body 21 and the second valve body 27.
    [0047] [0047] The valve arrangement further comprises a freely movable valve body 38 located in the recess 36 in the flow control device, said movable valve body 38 has a first surface 38a facing inlet port 33 and a second surface 38b located remote from the inlet port 33. Similarly, the recess 36 has a first surface 36a facing the first surface 38a of the movable valve body 38, and a second surface 36b facing the second surface 38b of the movable valve body 38. The movable valve body 38 comprises a first surface 38a with a substantially conical shape with an apex facing the inlet port 33. The second opposite surface 38b can be flat, or substantially flat. The first surface 36a of the recess 36 facing the first surface 38a of the movable valve body 38 has a substantially tapered shape conforming to the shape of the valve body. In the example shown, the movable valve body 38 comprises a conical body extending to an outer periphery 38c spaced from an adjacent side wall 36c of the recess 36. The outer periphery 38c may comprise a cylindrical surface with a predetermined height, as shown in Figure 2B. Alternatively, the first and second surfaces 38a, 38b of the movable valve body 38 can directly fuse at the outer periphery 38c.
    [0048] [0048] Figure 3 shows a partially sectioned view of the second valve body 27, used in the modalities of Figures 2A and 2B. As previously described, the second valve body 27 has a general cup shape with an opening arranged to face a first valve body (see "22/23", Figures 2A / 2B). The second valve body 27 is placed in sealing contact with the first valve body and is attached to said first valve body by means of a threaded connection 35. The corresponding threaded connection on the first valve body is located in an internal section cylindrical shape of the first valve body. The second valve body 27 is provided with a number of radial outlet holes 30, extending radially out of the portion of the recess 26 delimited by the second valve body 27. The portion of the recess 26 delimited by said second valve body 27 comprises the second substantially 26b and the side wall 26c of the recess 26. The side wall 26c of the recess 26 can comprise a partial cylindrical cutout coincident with each radial outlet port 30, as shown in Figure 3, but can also comprise a substantially cylindrical with a constant diameter . The surfaces 26d located between neighboring cutouts assist in maintaining the movable valve body in its centralized position in the recess 26. However, in operation, the flow of fluid beyond the movable valve body 28, 38 will normally cause said valve body be centralized automatically.
    [0049] [0049] Figure 3 shows a modality provided with 12 outlet holes distributed at equal distances around the periphery of the second valve body 27. The outlet holes 30 are located radially outside the outer diameter of the movable valve body. The number and diameter of the outlet orifices can be varied to suit the dimensions of the second valve body 27. The total flow area of the outlet orifices must be at least equal to the flow area of the inlet port in the first body of the valve. valve. The outlet holes 30 extend radially outward through the annular wall of the second valve body 27 until it reaches an annular space between an annular body (see "21", Figures 2A / 2B) and the second valve body 27. This space annular is in fluid connection with the internal volume of the tube in which the valve arrangement is mounted. The second surface 26b of the recess 26 is provided with 6 projections 29 arranged to support a movable valve body (see "29", Figures 2A / 2B). The number of projections 29 is preferably at least three and the width and radial extension of the respective upper surface of each projection determines the surface of contact with the movable valve body. The number, surface area and radial location are selected to avoid or minimize adherence between the projections and the valve body when the movable valve body is actuated.
    [0050] [0050] Figure 4 shows a partially sectional view of a second alternative valve body according to the invention. The second valve body 47, as shown in Figure 4, has a general cup shape with an opening arranged to face a first valve body, in the same way as the second valve body in Figure 3 (cf. "22 / 32 ", Figures 2A / 2B). The second valve body 47 is placed in sealing contact with the first valve body (not shown) to form a recess 46 and is attached to said first valve body by means of a threaded connection 45. The corresponding threaded connection in the first The valve body is located in a cylindrical inner section of the first valve body.
    [0051] [0051] The second valve body 47 differs from the second valve body 27 in Figure 3 in that it is provided with numerous axial outlet holes 40, extending axially downwards from a second lower surface 46b of the recess 46 delimited by second valve body 47. As described with reference to Figure 3, the portion of the recess 46 delimited by said second valve body 47 comprises a second surface 46b and a circumferential side wall 46c of the recess 46. The side wall 46c of the recess 46 can comprise numerous partial cylindrical indentations coinciding with each axial outlet hole 40, as shown in Figure 4, but can also comprise a cylindrical surface with a constant diameter. The surfaces 46d located between neighboring cutouts assist in maintaining the movable valve body in its centralized position in the recess 46.
    [0052] [0052] Figure 4 shows a modality provided with 12 outlet holes distributed at equal distances around the periphery of the second valve body 47. The central axes of the outlet holes 40 are located so that they intercept or pass radially outwards the outside diameter of the movable valve body. The number and diameter of the outlet orifices can be varied to suit the dimensions of the second valve body 47. The total flow area of the outlet orifices must be at least equal to the flow area of the inlet port on the first valve body. valve. The outlet holes 40 extend axially through the base of the second cup-shaped valve body 47, to reach the internal volume of the production pipe in which the valve arrangement is mounted. The second surface 46b of the recess 46 is provided with 6 projections 49 arranged to support a movable valve body (see "29", Figures 2A / 2B). The number of projections 49 is preferably at least three and the width and radial extension of the respective upper surface of each projection determines the surface of contact with the movable valve body. The number, surface area and radial location are selected to avoid or minimize adherence between the projections and the valve body when the movable valve body is actuated.
    [0053] [0053] Figure 5 shows a partially sectioned view of a second alternative valve body according to the invention. The second valve body 57 shown in Figure 5 has a general cup shape with a larger opening arranged to face the first valve body, as shown in Figure 3 (cf. "22/32", Figures 2A / 2B) , and a smaller central opening 51 facing the internal volume of the production pipe in which the valve arrangement is mounted. The second valve body 57 is placed in sealing contact with a first valve body (not shown) to form a recess 56 and is attached to said first valve body by means of a threaded connection 55. The corresponding threaded connection in the first The valve body is located in a cylindrical inner section of the first valve body.
    [0054] [0054] The second valve body 57 differs from the second valve body 47 in Figure 4 in that it is provided with a central opening 51 with numerous radial recesses 50 forming a common outlet port 50, 51. The common outlet port 50 , 51 extends axially downwardly from a second lower surface 56b of the recess 56 delimited by the second valve body 57. As described with reference to Figure 4, the portion of the recess 56 delimited by said second valve body 57 comprises a second surface 56b and a circumferential side wall 56c of the recess 56. The side wall 56c of the recess 56 can comprise numerous partial cylindrical cutouts around the recess 56, as shown in Figure 4, but can also comprise a cylindrical surface with a constant diameter. The 56d surfaces located between neighboring cutouts assist maintaining the movable valve body in its centralized position in the recess 46.
    [0055] [0055] Figure 5 shows an embodiment where the combined outlet port 50, 51 is provided with 6 radial recesses 50 distributed at equal distances around the periphery of the central opening 51 of the second valve body 57. The radial recesses 50 of the orifice combined outlet ports 50, 51 are located so that they extend radially outward from the outside diameter of the movable valve body (not shown). The number and radius of the radial recesses 50 can be varied to suit the dimensions of the second valve body 57. The total flow area of the outlet port must be equal to the flow area of the inlet port in the first valve body. The combined outlet port 50, 51 extends axially through the base of the second cup-shaped valve body 57 to reach the internal volume of the production tube in which the valve arrangement is mounted. The radial recesses 50 are separated by 6 projections 59 extending towards the center of the central opening 51. The projections 59 are arranged to support a movable valve body (see "29", Figures 2A / 2B). The number of projections 59 is preferably at least three and the width and radial extension of the respective upper surface of each projection determine the surface of contact with the movable valve body. The number, surface area and radial location are selected to avoid or minimize adherence between the projections and the movable valve body when the movable valve body is actuated.
    [0056] [0056] It is, for example, possible to combine any of the modalities for the movable valve body, as shown in Figures 2A or 2B, with any of the second alternative valve bodies in Figures 3-5. Furthermore, in the case of a reverse flow from the outlet to the inlet through a valve arrangement in accordance with the modalities shown, the outlet orifices are positioned in relation to the movable body so that a major portion of the fluid flow through from the outlets to the respective recesses pass under the movable body and make it close.
    权利要求:
    Claims (14)
    [0001]
    Valve (20) for controlling the flow of a fluid in a production tube (11) from a well in an oil and / or gas reservoir, the fluid comprising a liquid phase and a dissolved gas phase, the valve (20) comprising : a fluid inlet; a movable body (28) located in a flow path of the fluid inlet (23) through the valve (20), the movable body (28) being arranged to move freely in relation to an inlet opening (23) to vary the area of direct flow through which the fluid flows through the Bernoulli effect; where the valve is characterized by the fact that which dimensions of the valve (20) are such that the flow of fluid beyond the movable body (28) causes a drop in pressure below the bubble point of the gas phase in the liquid phase, thereby increasing the flow of fluid through the valve (20 ), wherein said dimensions provide an outlet orifice (30) having an opening connected to a recess (26) having a movable body (28), the outlet orifice (30) facing an outer peripheral surface (28c) to the movable body (28), in which the outlet port (30) in the opening is arranged to guide the fluid out of the recess (26) radially, wherein the outlet orifice (30) comprises multiple openings, each connected to the recess (26) at a location on the outer peripheral surface (28c), or radially outside it, of the movable body (28); wherein the multiple openings are each connected in the recess (26) in the radial direction of the valve (20).
    [0002]
    Valve (20) according to claim 1, characterized by the fact that the movable body (28) is located in a recess (26) in the valve, the movable body (28) having a first surface (28a) facing the orifice inlet (23) and a second surface (28b) located remote from the inlet hole (23); wherein the inlet port (23) is connected to the recess through a central opening in such a way that the fluid is arranged to flow into the recess (26) through the central opening; and the fluid is arranged to flow out of the recess (26) radially through a first surface of the movable body (28), and in addition to an outer peripheral surface (28c) of said movable body (28) towards at least one orifice outlet (30).
    [0003]
    Valve (20) according to claim 2, characterized in that a main portion of the outlet port (30) is connected to the recess (26) in a position located remote from the central opening relative to a plane through the second surface ( 28b).
    [0004]
    Valve (20) according to claim 1, characterized by the fact that the multiple openings are each connected to the recess (26) in such a way that each opening faces the outer peripheral surface (28c) of the movable body (28) .
    [0005]
    Valve (20) according to claims 1 or 4, characterized in that the central axis of each opening is arranged in a plane located remote from the central opening relative to a plane through the second surface (28b).
    [0006]
    Valve (20) according to claim 2 or 3, characterized in that the outlet orifice (30) comprises multiple openings, each opening connected in the recess (26) in the axial direction of the valve (20).
    [0007]
    Valve (20) according to claim 6, characterized by the fact that the multiple openings are each connected to the recess (26) on the opposite side of the movable body (28) relative to the inlet hole (23).
    [0008]
    Valve (20) according to claim 6 or 7, characterized in that the central axis of each opening is connected to the recess (26) so that each one coincides with the outer peripheral surface (26) of the movable body (28 ), or pass radially out of it.
    [0009]
    Valve (20) according to any of claims 2 to 8, characterized in that the movable body is supported by at least three projections extending into the interior of the recess (26) towards the second movable body surface (28) .
    [0010]
    Valve (20) according to claim 2 or 3, characterized in that the outlet orifice (30) comprises an opening connected to the recess (26) on the opposite side of the movable body (28) relative to the inlet (23) ).
    [0011]
    Valve (20) according to claim 10, characterized in that the opening has a cross sectional area greater than or equal to the second surface of the movable body (28).
    [0012]
    Valve (20) according to claim 10 or 11, characterized in that the movable body (28) is supported by at least three projections extending radially outwardly from the peripheral circumference of the recess (26).
    [0013]
    Valve (20) according to any one of claims 1 to 12, characterized by the fact that the movable body (28) comprises one of a circular and tapered disc with the apex facing the inlet hole (23).
    [0014]
    Method for controlling the flow of a fluid in a production tube from a well in an oil and / or gas reservoir, the fluid comprising a liquid phase and a dissolved gas phase, in which the method comprises allowing the fluid to pass through a valve (20), the valve comprising a fluid inlet (23) and a movable body (28) located in a flow path through the valve (20), the movable body (28) being arranged to move freely in relation to the opening of the inlet (23) to vary the area of direct flow through which the fluid flows through the Bernoulli effect, in the method is characterized by the fact that dimensions of the valve (20) are such that the flow of fluid beyond the moving body (28) causes a drop in pressure below the bubble point of the gas phase in the liquid phase, thereby increasing the flow of fluid through the valve (20) ; said dimensions provide an outlet orifice (30) having an opening connected to a recess (26) having a movable body (28), the outlet orifice (30) facing an outer peripheral surface (28c) to the movable body (28 ), in which the outlet port (30) in the opening is arranged to guide the fluid out of the recess (26) radially; and the outlet orifice (30) comprises multiple openings, each connected to the recess (26) at a location on the outer peripheral surface (28c), or radially outside it, of the movable body (28); wherein the multiple openings are each connected in the recess (26) in the radial direction of the valve (20).
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    同族专利:
    公开号 | 公开日
    WO2012095196A3|2012-10-26|
    WO2012095196A2|2012-07-19|
    US9534470B2|2017-01-03|
    EP2663732A1|2013-11-20|
    CN103443395B|2017-02-15|
    US20140027126A1|2014-01-30|
    MX354774B|2018-03-20|
    MX2013008172A|2013-11-20|
    CN103443394B|2016-10-19|
    WO2012095183A1|2012-07-19|
    CA2824302C|2019-01-22|
    EA028044B1|2017-10-31|
    CN103443395A|2013-12-11|
    EP2663732B1|2019-07-24|
    BR112013017731A2|2016-10-11|
    EA201391045A1|2014-03-31|
    AU2011355243B2|2016-08-04|
    CN103443394A|2013-12-11|
    AU2011355243A1|2013-08-01|
    CA2824302A1|2012-07-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4577691A|1984-09-10|1986-03-25|Texaco Inc.|Method and apparatus for producing viscous hydrocarbons from a subterranean formation|
    CA1247000A|1984-12-31|1988-12-20|Texaco Canada Resources Ltd.|Method and apparatus for producing viscoushydrocarbons utilizing a hot stimulating medium|
    CA1275914C|1986-06-30|1990-11-06|Hermanus Geert Van Laar|Producing asphaltic crude oil|
    CN87205931U|1987-03-30|1988-03-02|西南石油学院|Level-pressure contant current device for capillary tube|
    US4858691A|1988-06-13|1989-08-22|Baker Hughes Incorporated|Gravel packing apparatus and method|
    DE68928259T2|1989-09-11|1998-03-19|David W Palmer|DEVICE FOR CONTROLLING A FLUID FLOW RATE|
    GB9025230D0|1990-11-20|1991-01-02|Framo Dev Ltd|Well completion system|
    US5752570A|1996-11-04|1998-05-19|Petroenergy Llc|Method and device for production of hydrocarbons|
    AU4893901A|2000-04-07|2001-10-30|Vladimir Ivanovich Ivannikov|Device for flow and liftgas production of oil-wells |
    US6371210B1|2000-10-10|2002-04-16|Weatherford/Lamb, Inc.|Flow control apparatus for use in a wellbore|
    US7240739B2|2004-08-04|2007-07-10|Schlumberger Technology Corporation|Well fluid control|
    AU2007270180B2|2006-07-07|2012-03-15|Equinor Energy As|Flow control device and method|
    NO326258B1|2007-05-23|2008-10-27|Ior Technology As|Valve for a production pipe, and production pipe with the same|
    US20090000787A1|2007-06-27|2009-01-01|Schlumberger Technology Corporation|Inflow control device|
    US7918272B2|2007-10-19|2011-04-05|Baker Hughes Incorporated|Permeable medium flow control devices for use in hydrocarbon production|
    US8066071B2|2007-11-01|2011-11-29|Schlumberger Technology Corporation|Diverter valve|
    NO20080082L|2008-01-04|2009-07-06|Statoilhydro Asa|Improved flow control method and autonomous valve or flow control device|
    NO20080081L|2008-01-04|2009-07-06|Statoilhydro Asa|Method for autonomously adjusting a fluid flow through a valve or flow control device in injectors in oil production|
    NO332898B1|2008-05-07|2013-01-28|Bech Wellbore Flow Control As|Flow regulator device for regulating a fluid flow between a petroleum reservoir and a rudder body|
    NO338988B1|2008-11-06|2016-11-07|Statoil Petroleum As|Method and apparatus for reversible temperature-sensitive control of fluid flow in oil and / or gas production, comprising an autonomous valve operating according to the Bemoulli principle|
    CA2697089C|2009-05-11|2015-12-29|Msi Machineering Solutions Inc.|Production tubing drain valve|
    GB2492292B|2010-03-18|2016-10-19|Statoil Petroleum As|Flow control device and flow control method|SG11201504001TA|2013-01-29|2015-06-29|Halliburton Energy Services Inc|Magnetic valve assembly|
    WO2015017638A1|2013-07-31|2015-02-05|Schlumberger Canada Limited|Sand control system and methodology|
    GB201401653D0|2014-01-31|2014-03-19|Swellfix Bv|Flow control device|
    CA2959502A1|2014-08-29|2016-03-03|Schlumberger Canada Limited|Autonomous flow control system and methodology|
    GB201418062D0|2014-10-13|2014-11-26|Flotech Holdings Bvi Ltd|Downhole flow control device|
    GB2555286B|2015-06-26|2019-10-02|Halliburton Energy Services Inc|Systems and methods for controlling mud flow across a down-hole power generation device|
    US10871057B2|2015-06-30|2020-12-22|Schlumberger Technology Corporation|Flow control device for a well|
    CA2902548C|2015-08-31|2019-02-26|Suncor Energy Inc.|Systems and method for controlling production of hydrocarbons|
    GB2550691B|2016-05-18|2019-03-06|Spex Corp Holdings Ltd|A Tool for Manipulating a Tubular|
    US10060221B1|2017-12-27|2018-08-28|Floway, Inc.|Differential pressure switch operated downhole fluid flow control system|
    US11041361B2|2018-12-05|2021-06-22|Halliburton Energy Services, Inc.|Density AICD using a valve|
    GB2582431B|2020-01-21|2021-11-17|Equinor Energy As|Riser surge protection system|
    RU2743285C1|2020-07-21|2021-02-16|Сергей Евгеньевич Варламов|Autonomous inflow regulator|
    RU208553U1|2021-10-14|2021-12-23|Общество с ограниченной ответственностью «НАУЧНО ПРОИЗВОДСТВЕННАЯ КОМПАНИЯ «ФИЛЬТР»|SUPPLY CONTROL VALVE|
    RU208554U1|2021-10-14|2021-12-23|Общество с ограниченной ответственностью «НАУЧНО ПРОИЗВОДСТВЕННАЯ КОМПАНИЯ «ФИЛЬТР»|SUPPLY CONTROL VALVE|
    法律状态:
    2017-02-07| B08F| Application fees: dismissal - article 86 of industrial property law|
    2017-03-14| B08G| Application fees: restoration|
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-09-03| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-08-04| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law|
    2020-11-10| B09A| Decision: intention to grant|
    2021-01-12| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 29/09/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    2021-04-13| B25D| Requested change of name of applicant approved|Owner name: EQUINOR ENERGY AS (NO) |
    优先权:
    申请号 | 申请日 | 专利标题
    PCT/EP2011/050471|WO2012095183A1|2011-01-14|2011-01-14|Autonomous valve|
    EPPCT/EP2011/050471|2011-01-14|
    PCT/EP2011/067058|WO2012095196A2|2011-01-14|2011-09-29|Autonomous valve|
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