Source: https://patents.google.com/patent/US9366108B2/en
Timestamp: 2020-08-07 18:19:44
Document Index: 136150584

Matched Legal Cases: ['§119', 'Application No. 20100164', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'arts 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'arts 4', 'arts 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'arts 90', 'arts 9', 'art 401', 'art 40', 'art 4', 'art 4', 'art 40', 'art 40', 'art 40', 'art 40', 'art 40', 'art 40']

US9366108B2 - Flow control device and flow control method - Google Patents
Flow control device and flow control method Download PDF
US9366108B2
US9366108B2 US14/632,462 US201514632462A US9366108B2 US 9366108 B2 US9366108 B2 US 9366108B2 US 201514632462 A US201514632462 A US 201514632462A US 9366108 B2 US9366108 B2 US 9366108B2
US14/632,462
US20150167426A1 (en
2010-02-02 Priority to NO20100164A priority Critical patent/NO336424B1/en
2010-02-02 Priority to NO20100164 priority
2011-02-02 Priority to PCT/EP2011/051458 priority patent/WO2011095512A2/en
2012-09-19 Priority to US201213576465A priority
2015-02-26 Application filed by Equinor Energy AS filed Critical Equinor Energy AS
2015-02-26 Priority to US14/632,462 priority patent/US9366108B2/en
2015-06-18 Publication of US20150167426A1 publication Critical patent/US20150167426A1/en
2016-06-14 Publication of US9366108B2 publication Critical patent/US9366108B2/en
The invention generally relates to a flow control device and a flow control methods. One embodiment provides a flow control device comprising: a first flow path to allow fluid to flow from an inlet port provided on an inlet side of the device to an outlet port provided on an outlet side of the device; a closure element arranged to prevent fluid flow along the first fluid path in a direction from the outlet port to the inlet port; and an arrangement adapted to open a second fluid path, different along at least part of its length from the first fluid path, in dependence upon the pressure of fluid at the outlet side, the second fluid path allowing fluid to flow from a first relief port provided on the outlet side to a second relief port provided on the inlet side, wherein the flow control device comprises an inner body part and an outer body part, the inner body part being sealingly arranged and moveable within the outer body part (4 b; 40 b) between a first position and a second position under the influence of the pressure of fluid at the outlet side, wherein a first part of the second fluid path is formed within the inner body part and a second part of the second fluid path is formed within the outer body part, the first and second parts of the second fluid path being in communication with one another when the inner body part is in the second position but not when the inner body part is in the first position, thereby opening the second fluid path when the inner body part moves from the first position to the second position.
This application is a Continuation of copending application Ser. No. 13/576,465, filed on Sep. 19, 2012, which was filed as PCT International Application No. PCT/EP2011/051458 on Feb. 2, 2011, which claims priority under 35 U.S.C. §119(a) to Patent Application No. 20100164, filed in Norway on Feb. 2, 2010, all of which are hereby expressly incorporated by reference into the present application.
The present invention generally relates to a flow control device and flow control methods.
The present applicant has identified that a possible limitation or problem with the valve or control device as disclosed in WO-A-9208875 in certain cases or applications is that substantially only one-way flow is possible through said valve or control device (although this might be a prerequisite or advantage in other cases or applications). Said limitation or problem is sought to be avoided or at least alleviated by the present applicant in providing some embodiments of the present invention.
According to a first aspect of the present invention, there is provided a flow control device comprising: a first flow path to allow fluid to flow from an inlet port provided on an inlet side of the device to an outlet port provided on an outlet side of the device; a closure element arranged to prevent fluid flow along the first fluid path in a direction from the outlet port to the inlet port; and an arrangement adapted to open a second fluid path, different along at least part of its length from the first fluid path, in dependence upon the pressure of fluid at the outlet side, the second fluid path allowing fluid to flow from a first relief port provided on the outlet side to a second relief port provided on the inlet side, wherein the flow control device comprises an inner body part and an outer body part, the inner body part being sealingly arranged and moveable within the outer body part between a first position and a second position under the influence of the pressure of fluid at the outlet side, wherein a first part of the second fluid path is formed within the inner body part and a second part of the second fluid path is formed within the outer body part, the first and second parts of the second fluid path being in communication with one another when the inner body part is in the second position but not when the inner body part is in the first position, thereby opening the second fluid path when the inner body part moves from the first position to the second position.
According to a second aspect of the present invention, there is provided a flow control method for use with a flow control device having a first flow path to allow fluid to flow from an inlet port provided on an inlet side of the device to an outlet port provided on an outlet side of the device, and a closure element arranged to prevent fluid flow along the first fluid path in a direction from the outlet port to the inlet port, the method comprising providing or using an arrangement to open a second fluid path, different along at least part of its length from the first fluid path, in dependence upon the pressure of fluid at the outlet side, the second fluid path allowing fluid to flow from a first relief port provided on the outlet side to a second relief port provided on the inlet side, wherein the flow control device comprises an inner body part and an outer body part, the inner body part being sealingly arranged and moveable within the outer body part between a first position and a second position under the influence of the pressure of fluid at the outlet side, wherein the method comprises a first part of the second fluid path being formed within the inner body part and a second part of the second fluid path being formed within the outer body part, the first and second parts of the second fluid path being in communication with one another when the inner body part is in the second position but not when the inner body part is in the first position, thereby opening the second fluid path when the inner body part moves from the first position to the second position.
According to a third aspect of the present invention, there is provided a method of controlling the flow of hydrocarbon fluid including any water between a hydrocarbon reservoir and a production pipe, the production pipe having one or more production sections, and the method comprising providing or using a flow control device according to the first aspect of the present invention in the or each production section of the production pipe.
FIG. 2 a) and b) shows the prior control device 2 of WO 2008/004875 A1 in larger scale. The device consists of a first disc-shaped housing body 4 with an outer cylindrical segment 5 and inner cylindrical segment 6 and with a central hole or aperture 10, and a second disc-shaped holder body 7 with an outer cylindrical segment 8, as well as a preferably flat disc or freely movable body 9 provided in an open space 14 formed between the first 4 and second 7 disc-shaped housing and holder bodies. The body 9 may for particular applications and adjustments depart from the flat shape and have a partly conical or semicircular shape (for instance towards the aperture 10). As can be seen from the figure, the cylindrical segment 8 of the second disc-shaped holder body 7 fits within and protrudes in the opposite direction of the outer cylindrical segment 5 of the first disc-shaped housing body 4 thereby forming a flow path as shown by the arrows 11, where the fluid enters the control device through the central hole or aperture (inlet) 10 and flows towards and radially along the disc 9 before flowing through the annular opening 12 formed between the cylindrical segments 8 and 6 and further out through the annular opening 13 formed between the cylindrical segments 8 and 5. The two disc-shaped housing and holder bodies 4, 7 are attached to one another by a screw connection, welding or other means (not further shown in the figures) at a connection area 15 as shown in FIG. 2b ).
p static=½ρv 2 +Δp friction
Δp over =[p over(P 4 ) −p under(f(p 1 ,p 2 ,p 3 )]=½ρv 2
Δp=K·½ρv 2
The housing body 4 comprises an inner body part 4 a coaxially and sealingly arranged within a corresponding recess in an outer body part 4 b. The inner body part 4 a is axially movable within the outer body part 4 b between a first position and a second position, with a resilient member 24 arranged to provide a predetermined biasing force to resist movement of the inner body part 4 a from the first position to the second position. Movement of the inner body part 4 a from the first position to the second position is caused by an overpressure acting on the outlet side 35 of the control device 2 opposite of an inlet side 33, with the overpressure exceeding said predetermined biasing force of the resilient member 24.
As will be explained in further detail below with reference to FIG. 11, the first and second positions respectively provide normal operation via the flow path 11 and reversed flow operation of the valve or control device 2, wherein in said second position the flow path 11 is closed and a second flow path 25 of reversed flow is created. For the purpose of providing the second flow path 25, at least one branch channel 31 is provided in the inner body part 4 a (downstream of the controlling body 9 under normal operation) and at least one corresponding channel 26 is provided in the outer body part 4 b. Each channel 26 provided in the outer body part 4 b extends from an axial interface between the inner and outer body parts 4 a, b and opens to a relief port 37 on the inlet side 33 of the control device 2.
The closing or blocking of the flow path 11 in the second position of reversed flow is caused by said overpressure pressing the controlling body 9 sealingly against a seat 19 of the inlet 10 at the same time as the inner body part 4 a is lifted in said recess causing the movement into said second position of reversed flow.
Before reaching the second position in which a reverse flow path is created, the branch channel 31 provided in the inner body part 4 a does not align with its corresponding channel 26 provided in the outer body part 4 b, so that no fluid flows along the branch channel 31, and no fluid can reach the channels 26 provided in the outer body part 4 b.
However, as pressure on the outlet side 35 of the control device 2 causes the inner body part 4 a to move within the outer body part 4 b, so eventually the branch channel 31 provided in the inner body part 4 a comes into alignment with its corresponding channel 26 provided in the outer body part 4 b, thereby allowing fluid to flow from the outlet port 13 along the branch channel 31 and thence along the channel 26 provided in the outer body part 4 b, and then to the relief port 37 on the inlet side 33, completely bypassing the body 9. The branch channel 31 provided in the inner body part 4 a comes into alignment with its corresponding channel 26 provided in the outer body part 4 b, thereby to open the reverse flow path 25, when the pressure of the fluid at the outlet side 35 exceeds a predetermined value. The predetermined value is determined in part by the characteristics of the resilient member 24 (such as its spring constant) and in part on the forces acting on the inner body part 4 a due to the pressure of the fluid at the inlet side 33. In this embodiment it can therefore be considered that the reverse fluid path 25 is caused to open in response to the pressure differential (fluid pressure at the outlet side 35 minus fluid pressure at the inlet side 33) exceeding a predetermined value (or, in other words, in response to the fluid pressure at the outlet side 35 exceeding the fluid pressure at the inlet side 33 by a predetermined amount).
An annular gasket 27 is preferably provided in an annular slot 28 at the interface between the inner and outer body parts 4 a, 4 b.
Preferably, the resilient member 24 is an annular spring is arranged between a locking ring 29 and an annular shoulder 30 of the inner body 4 a.
A plurality of channels 26 are, as shown in FIGS. 9-11, preferably equidistantly and circularly arranged at the interface between the inner and outer body parts 4 a, 4 b, and a plurality of branch channels 31 are preferably equidistantly and circularly arranged at the side of the valve 2 oppositely of the inlet 10.
FIG. 11 b) further shows a zero flow mode in which the fluid pressure affecting the inner body part 4 a of the valve 2 is less than the force of the annular spring 24. The valve or control device 2 thus acts like a check valve with zero or low flow rate through the valve 2 (the flow path 11 is shown in brackets, to indicate that it is no longer a complete path through the device 2). Also this mode is obtainable by the related valve or control device disclosed in WO 2008/004875 A1.
Finally, FIG. 11 c) shows a reversed flow mode, in which the fluid pressure acting on the inner body part 4 a exceeds the force of the annular spring 24 and the inner body part is lifted within the outer body part 4 b, which causes a high flow rate in an opposite direction through the valve or control device 2 via the second flow path 25.
According to an embodiment of the present invention there is further provided a method for reversed flow through an improved self-adjustable (autonomous) valve or flow control device 2 as described above, comprising the step of providing an overpressure on the outlet side 35 of the valve 2 opposite of the inlet side 33 exceeding a predetermined biasing force of the resilient member 24 causing lifting of the inner body part 4 a within the outer body part 4 b against said biasing force from a first position of fluid flow between an inner and an outer side of the valve 2 via the flow path 11 and to a second position of reversed fluid flow between said inner and outer side through the second flow path 25.
To illustrate the application of the present invention to one type of flow control device that is not of an autonomous nature, a schematic representation of a ball check valve 200 embodying the present invention is presented in FIGS. 12 a) and 12 b). It is not necessary to go into any detail in describing the ball check valve 200 of FIG. 12, because the skilled person will readily appreciate the similarity to the control device 2 described above with reference to FIGS. 9 to 11.
Parts of the FIG. 12 device that are equivalent to corresponding respective parts of the FIGS. 9 to 11 device are given reference numerals that are 10× that of the earlier embodiment (with the exception that device 200 of FIG. 12 is equivalent to device 2 of FIGS. 9 to 11). For example, parts 90, 40 a, and 290 of FIG. 12 are equivalent to parts 9, 4 a and 29 of FIGS. 9 to 11. The ball 90 is the “closure element” of the inventive concept described above, and is roughly equivalent to the movable body 9 of the earlier embodiment.
FIG. 12 a) corresponds closely to FIG. 11 a), showing operation of the control device in the “normal” mode, while FIG. 12 b) corresponds closely to FIG. 11 c), showing operation of the control device in the “reverse flow” mode. In a manner similar to that described above, a reverse flow path 250 is opened up when the inner body part 401 moves sufficiently within the outer body part 40 b to align the two channels 310 and 260.
Referring to parts of the main embodiment described above, it will be appreciated that the reverse-flow fluid path 25 need not share a port 13 on the outlet side 35 of the device 2 with the forward-flow path 11. For example, a separate port on the outlet side 35 of the device 2 can be provided with a channel through the outer body part 4 b which links to a corresponding channel provided through the inner body part 4 a towards the inlet side 33 of the device 2, thereby opening the reverse-flow path 25. The reverse-flow path 25 can either link into the inlet port 10, or can drain to a separate port on the inlet side 33 of the device 2.
Such a variation is illustrated in FIG. 13, which is based closely on the embodiment described above with reference to FIG. 12. In FIG. 13, a separate relief port 390 is provided on the outlet side 350 of the device 200, with a channel through the outer body part 40 b, which communicates in the reverse flow mode (i.e. as depicted in FIG. 13) with a corresponding channel through the inner body part 40 a, and thence to the inlet port 100. Therefore, in the FIG. 13 arrangement, the relief port on the inlet side 330 for the reverse path 250 is shared with the inlet port 100 for the forward flow path 110. One could also have an arrangement where the reverse path begins in the outer body part 40 b, then passes into the inner body part 40 a, and then back to the outer body part 40 b, thereby having relief ports at both ends that are separate from the inlet and outlet ports of the forward fluid path. Even if the reverse flow path begins and/or ends in the inner body part 40 a, there could be a separate relief port provided for the reverse flow path 250 to that of the forward flow path 110.
According to a first arrangement, there is provided a self-adjustable (autonomous) valve or flow control device (2) for controlling the flow of a fluid from one space or area to another, in particular useful for controlling the flow of fluid, i.e. oil and/or gas including any water, from a reservoir and into a production pipe of a well in the oil and/or gas reservoir, which production pipe includes a lower drainage pipe preferably being divided into at least two sections (1) each including one or more inflow control devices (2) which communicates the reservoir with a flow space of the drainage pipe, including a freely movable controlling body (9) being arranged in a housing body (4), the controlling body (9) facing the outlet of an aperture or inlet (10) in the centre of the housing body (4) and being held in place in the recess (21) or housing body (4) by means of a holder device or arrangement (7), thereby forming a flow path (11) in normal operation going through the central aperture or inlet (10), towards and along the body (9) and out of the recess or housing, characterised by said housing body (4) comprising an inner body part (4 a) coaxially and sealingly arranged within a corresponding recess in an outer body part (4 b), said inner body part (4 a) being axially movable within the outer body part (4 a) between a first position and a second position against a predetermined biasing force from a resilient member (24) arranged between said inner and outer body parts (4 a, 4 b) by an overpressure acting on an outlet side of the valve (2) opposite of a side of the inlet (10) and exceeding said predetermined biasing force of the resilient member (24), said first and second positions providing normal operation via the flow path (11) and reversed flow operation of the valve or control device (2), respectively, wherein in said second position the flow path (11) is closed and a second flow path (25) of reversed flow is created between at least one branch channel (31) in the inner body part (4 a) arranged downstream of the controlling body (9) under normal operation and at least one corresponding channel (26) in the outer body part (4 b), said corresponding channel (26) extending between an axial interface between the inner and outer body parts (4 a, b) and a same side of the valve (2) as the central aperture or inlet (10), said closing of the flow path (11) in the second position of reversed flow being caused by said overpressure pressing the controlling body (9) sealingly against a seat (19) of the inlet (10) at the same time as the inner body part (4 a) is lifted in said recess causing the movement into said second position of reversed flow.
An annular sealing (27) may be provided in an annular slot (28) at the interface between the inner and outer body parts (4 a, 4 b).
The annular spring (24) may be arranged between a locking ring (29) and an annular shoulder (30) of the inner body (4 a).
A plurality of flow paths (25) may be equidistantly and circularly arranged at the interface between the inner and outer body parts (4 a, 4 b).
According to another arrangement, there is provided a method for reversed flow through a self-adjustable (autonomous) valve or flow control device (2) according to the first arrangement and/or a previously-described aspect of the present invention, characterized by providing an overpressure on the side of the valve (2) opposite of the side of the inlet (10) exceeding a predetermined biasing force of the resilient member (24) causing lifting of the inner body part (4 a) within the outer body part (4 b) against said biasing force from a first position of fluid flow between an inner and an outer side of the valve (2) via the flow path (11) and to a second position of reversed fluid flow between said inner and outer side through the second flow path (25).
According to another arrangement, there is provided a use of a self-adjustable (autonomous) valve or flow control device in accordance with an above arrangement and/or a previously-described aspect of the present invention as a check valve in a reversed flow mode, e.g. when injecting steam or scale inhibitor down the production pipe of a well and into an adjacent formation or reservoir.
A “self-adjusting” arrangement provides an improved method for self-adjusting (autonomously adjusting) the flow of a fluid through a valve or flow control device, a self adjusting valve or flow control device, and use of said self adjusting valve or control device, in particular useful in a production pipe for producing oil and/or gas from a well in an oil and/or gas reservoir, which production pipe includes a lower drainage pipe preferably being divided into at least two sections each including one or more inflow control devices which communicates the geological production formation with the flow space of the drainage pipe.
More particularly, a “self-adjusting” arrangement relates to an improvement of the method for flow control and autonomous valve or flow control device as described in International application No. PCT/NO2007/000204 with publication No. WO 2008/004875 A1.
A “self-adjusting” arrangement provides an inflow control device which is self adjusting or autonomous and can easily be fitted in the wall of a production pipe and which therefore provide for the use of work-over tools. Such a device is designed to “distinguish” between the oil and/or gas and/or water and is able to control the flow or inflow of oil or gas, depending on which of these fluids such flow control is required.
An example device embodying the present invention is robust, can withstand large forces and high temperatures, prevents draw dawns (differential pressure), needs no energy supply, can withstand sand production, is reliable, but is still simple and relatively cheap.
Examples of devices and methods are provided by E1-E15 below:
E1. A flow control device (2; 200) comprising: a first flow path (11; 110) to allow fluid to flow from an inlet port (10; 100) provided on an inlet side (33; 330) of the device (2; 200) to an outlet port (13; 130) provided on an outlet side (35; 350) of the device (2; 200); a closure element (9; 90) arranged to prevent fluid flow along the first fluid path (11; 110) in a direction from the outlet port (13; 130) to the inlet port (10; 100); and an arrangement (4 a, 4 b, 24, 26, 31; 40 a, 40 b, 240, 260, 310) adapted to open a second fluid path (25; 250), different along at least part of its length from the first fluid path (11; 110), in dependence upon the pressure of fluid at the outlet side (35; 350), the second fluid path (25; 250) allowing fluid to flow from a first relief port (13; 130; 390) provided on the outlet side (35; 350) to a second relief port (37; 370; 100) provided on the inlet side (33; 330).
E2. A flow control device as defined in E1, wherein at least part of the first relief port (13; 130) for the second fluid path (25; 250) is shared with or the same as the outlet port (13; 130) for the first fluid path (11; 110).
E3. A flow control device as defined in E1 or E2, wherein at least part of the second relief port (37; 370) for the second fluid path (25; 250) is separate from the inlet port (10; 100) for the first fluid path (11; 110).
E4. A flow control device as defined in any one of E1 to E3, wherein the arrangement (4 a, 4 b, 24, 26, 31; 40 a, 40 b, 240, 260, 310) is adapted to open the second fluid path (25; 250) in response to the pressure of fluid at the outlet side (35; 250) exceeding the pressure of fluid at the inlet side (33; 330) by a predetermined amount.
E5. A flow control device as defined in any one of E1 to E4, wherein the closure element is a movable body (9) provided along the first fluid path (11), the body (9) being arranged such that changes in velocity and/or properties and/or composition of the fluid flowing along the first fluid path (11) result in changes to the forces acting on the body (9) as a result of the Bernoulli principle, thereby autonomously adjusting the flow of fluid through the control device (2).
E6. A flow control device as defined any one of E1 to E5, wherein the closure element (9; 90) is arranged to face the inlet port (10; 100).
E7. A flow control device as defined in any one of E1 to E6, comprising an inner body part (4 a; 40 a) and an outer body part (4 b; 40 b), the inner body part (4 a; 40 a) being sealingly arranged and moveable within the outer body part (4 b; 40 b) between a first position and a second position under the influence of the pressure of fluid at the outlet side (35), wherein a first part (31; 310) of the second fluid path (25; 250) is formed within the inner body part (4 a) and a second part (26; 260) of the second fluid path (25; 250) is formed within the outer body part (4 b; 40 b), the first and second parts of the second fluid path (25; 250) being in communication with one another when the inner body part (4 a; 40 a) is in the second position but not when the inner body part (4 a; 40 a) is in the first position, thereby opening the second fluid path (25; 250) when the inner body part (4 a; 40 a) moves from the first position to the second position.
E8. A flow control device as defined in E7, comprising a resilient member (24; 240) arranged to provide a predetermined resistance against movement of the inner body part (4 a; 40 a) from the first position to the second position.
E9. A flow control device as defined in E8, comprising a resilient member (24; 240) arranged to provide a predetermined resistance against movement of the inner body part (4 a; 40 a) from the first position to the second position, wherein the resilient member (24; 240) is an annular spring.
E10. A flow control device as defined in E8 or E9, wherein the annular spring (24; 240) is arranged between a locking ring (29; 290) and an annular shoulder (30) of the inner body (4 a; 40 a).
E11. A flow control device as defined in any one of E7 to E10, wherein an annular sealing member (27) is provided in an annular slot (28) at the interface between the inner and outer body parts (4 a, 4 b; 40 a, 40 b).
E12. A flow control device as defined any one of E1 to E11, wherein the second fluid path (25; 250) bypasses the closure element (9; 90).
E13. A flow control device as defined in any one of E1 to E12, comprising a plurality of such second flow paths (25; 250) and/or a plurality of such outlet ports (13; 130),
E14. A flow control method for use with a flow control device (2; 200) having a first flow path (11; 110) to allow fluid to flow from an inlet port (10; 100) provided on an inlet side (33; 330) of the device (2; 200) to an outlet port (13; 130) provided on an outlet side (35; 350) of the device (2; 200), and a closure element (9; 90) arranged to prevent fluid flow along the first fluid path (11; 110) in a direction from the outlet port (13; 130) to the inlet port (10; 100), the method comprising providing or using an arrangement (4 a, 4 b, 24, 26, 31; 40 a, 40 b, 240, 260, 310) to open a second fluid path (25; 250), different along at least part of its length from the first fluid path (11; 110), in dependence upon the pressure of fluid at the outlet side (35; 350), the second fluid path (25; 250) allowing fluid to flow from a first relief port (13; 130; 390) provided on the outlet side (35; 350) to a second relief port (37; 370; 100) provided on the inlet side (33; 330).
E15. A method of controlling the flow of hydrocarbon fluid including any water between a hydrocarbon reservoir and a production pipe (1), the production pipe (1) having one or more production sections, and the method comprising providing or using a flow control device as defined in any one of E1 to E13 in the or each production section of the production pipe (1).
a first flow path to allow fluid to flow from an inlet port provided on an inlet side of the device to an outlet port provided on an outlet side of the device;
a closure element arranged to prevent fluid flow along the first fluid path in a direction from the outlet port to the inlet port; and
an arrangement adapted to open a second fluid path, different along at least part of its length from the first fluid path, in dependence upon a pressure of fluid at the outlet side, the second fluid path allowing fluid to flow from a first relief port provided on the outlet side to a second relief port provided on the inlet side,
wherein the flow control device comprises an inner body part and an outer body part, the inner body part being sealingly arranged and moveable within the outer body part between a first position and a second position under the influence of the pressure of fluid at the outlet side, wherein a first part of the second fluid path is formed within the inner body part and a second part of the second fluid path is formed within the outer body part, the first and second parts of the second fluid path being in communication with one another when the inner body part is in the second position but not when the inner body part is in the first position, thereby opening the second fluid path when the inner body part moves from the first position to the second position.
4. The flow control device as claimed in claim 1, wherein the arrangement is adapted to open the second fluid path in response to the pressure of fluid at the outlet side exceeding a pressure of fluid at the inlet side by a predetermined amount.
5. The flow control device as claimed in claim 1, wherein the closure element is a movable body provided along the first fluid path, the body being arranged such that changes in velocity and/or properties and/or composition of the fluid flowing along the first fluid path result in changes to the forces acting on the body as a result of the Bernoulli principle, thereby autonomously adjusting the flow of fluid through the control device.
6. The flow control device as claimed claim 1, wherein the closure element is arranged to face the inlet port.
7. The flow control device as claimed in claim 1, comprising a resilient member arranged to provide a predetermined resistance against movement of the inner body part from the first position to the second position.
8. The flow control device as claimed in claim 1, comprising a resilient member arranged to provide a predetermined resistance against movement of the inner body part from the first position to the second position, wherein the resilient member is an annular spring.
10. The flow control device as claimed in claim 1, wherein an annular sealing member is provided in an annular slot at an interface between the inner and outer body parts.
11. The flow control device as claimed in claim 1, wherein the second fluid path bypasses the closure element.
13. A flow control method for use with a flow control device having a first flow path to allow fluid to flow from an inlet port provided on an inlet side of the device to an outlet port provided on an outlet side of the device, and a closure element arranged to prevent fluid flow along the first fluid path in a direction from the outlet port to the inlet port, the method comprising:
providing or using an arrangement to open a second fluid path, different along at least part of its length from the first fluid path, in dependence upon a pressure of fluid at the outlet side, the second fluid path allowing fluid to flow from a first relief port provided on the outlet side to a second relief port provided on the inlet side,
wherein the flow control device comprises an inner body part and an outer body part, the inner body part being sealingly arranged and moveable within the outer body part between a first position and a second position under the influence of the pressure of fluid at the outlet side, wherein the method comprises a first part of the second fluid path being formed within the inner body part and a second part of the second fluid path being formed within the outer body part, the first and second parts of the second fluid path being in communication with one another when the inner body part is in the second position but not when the inner body part is in the first position, thereby opening the second fluid path when the inner body part moves from the first position to the second position.
14. A method of controlling the flow of hydrocarbon fluid including any water between a hydrocarbon reservoir and a production pipe, the production pipe having one or more production sections, and the method comprising:
providing or using the flow control device as claimed in claim 1 in the or each production section of the production pipe.
US14/632,462 2010-02-02 2015-02-26 Flow control device and flow control method Active US9366108B2 (en)
NO20100164A NO336424B1 (en) 2010-02-02 2010-02-02 The flow control device, flow control method and use thereof
NO20100164 2010-02-02
PCT/EP2011/051458 WO2011095512A2 (en) 2010-02-02 2011-02-02 Flow control device and flow control method
US201213576465A true 2012-09-19 2012-09-19
US14/632,462 US9366108B2 (en) 2010-02-02 2015-02-26 Flow control device and flow control method
PCT/EP2011/051458 Continuation WO2011095512A2 (en) 2010-02-02 2011-02-02 Flow control device and flow control method
US13/576,465 Continuation US9038649B2 (en) 2010-02-02 2011-02-02 Flow control device and flow control method
US201213576465A Continuation 2012-09-19 2012-09-19
US20150167426A1 US20150167426A1 (en) 2015-06-18
US9366108B2 true US9366108B2 (en) 2016-06-14
ID=44355859
US13/576,465 Active 2031-10-19 US9038649B2 (en) 2010-02-02 2011-02-02 Flow control device and flow control method
US14/632,462 Active US9366108B2 (en) 2010-02-02 2015-02-26 Flow control device and flow control method
US (2) US9038649B2 (en)
EP (1) EP2531692B1 (en)
CN (1) CN102782249B (en)
AU (1) AU2011212499B2 (en)
BR (1) BR112012019187B1 (en)
CA (1) CA2788585C (en)
EA (1) EA024860B1 (en)
MX (1) MX2012008864A (en)
NO (1) NO336424B1 (en)
WO (1) WO2011095512A2 (en)
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2010-02-02 NO NO20100164A patent/NO336424B1/en unknown
2011-02-02 CA CA2788585A patent/CA2788585C/en active Active
2011-02-02 CN CN201180011568.8A patent/CN102782249B/en active IP Right Grant
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2015-02-26 US US14/632,462 patent/US9366108B2/en active Active
MX2012008864A (en) 2012-08-31
AU2011212499A1 (en) 2012-08-09
EP2531692B1 (en) 2015-12-30
EA024860B1 (en) 2016-10-31
US20130008513A1 (en) 2013-01-10
EP2531692A2 (en) 2012-12-12
CN102782249A (en) 2012-11-14
EA201290747A1 (en) 2013-02-28
AU2011212499B2 (en) 2016-02-25
WO2011095512A2 (en) 2011-08-11
BR112012019187A2 (en) 2018-03-27
BR112012019187B1 (en) 2020-01-14
US20150167426A1 (en) 2015-06-18
US9038649B2 (en) 2015-05-26
NO20100164A1 (en) 2011-08-03
WO2011095512A3 (en) 2012-05-03
NO336424B1 (en) 2015-08-17
CN102782249B (en) 2015-06-17
CA2788585C (en) 2018-01-16
CA2788585A1 (en) 2011-08-11
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