WO2016030658A2 - Système d'écoulement - Google Patents

Système d'écoulement Download PDF

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Publication number
WO2016030658A2
WO2016030658A2 PCT/GB2015/051781 GB2015051781W WO2016030658A2 WO 2016030658 A2 WO2016030658 A2 WO 2016030658A2 GB 2015051781 W GB2015051781 W GB 2015051781W WO 2016030658 A2 WO2016030658 A2 WO 2016030658A2
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
pressure differential
inlet
engagement
cooperating
Prior art date
Application number
PCT/GB2015/051781
Other languages
English (en)
Other versions
WO2016030658A3 (fr
Inventor
Keith Donald Woodford
Original Assignee
Tco In-Well Technologies Uk Ltd
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 Tco In-Well Technologies Uk Ltd filed Critical Tco In-Well Technologies Uk Ltd
Publication of WO2016030658A2 publication Critical patent/WO2016030658A2/fr
Publication of WO2016030658A3 publication Critical patent/WO2016030658A3/fr

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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
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
    • 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
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
    • 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
    • E21B37/00—Methods or apparatus for cleaning boreholes or wells
    • E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
    • 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
    • E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
    • E21B2200/06—Sleeve valves

Definitions

  • the present invention relates to a flow system, and in particular, but not exclusively, to a flow system for use in downhole injection.
  • Diluent Injection - where a fluid of a special composition is injected with the specific purpose of acting as a solvent to reduce viscosity and density of reservoir fluids in order to allow them to be more pumpable to improve or allow production to surface by methods such as a down hole mechanical pump, a down hole electric submersible pump (ESP), gas lift or other such methods of artificial lift. These applications tend to be performed at moderate to high flow rates which are a greater fraction of the flow rates of the actual produced reservoir well fluids.
  • ESP down hole electric submersible pump
  • Injection devices or valves are typically used to facilitate injection into a wellbore. Different types of injection device may be used depending on the nature of the injection, such as chemical type, flow rates etc. Some valves are operable to provide a fixed pressure differential between inlet and outlet, for example by use of a power spring acting against a valve member. Further, some valves, such as disclosed in WO 2014/037584, the disclosure of which is incorporated herein by reference, seek to maintain an injection line in positive pressure, to avoid issues associated with negative or reduced pressures being present, for example caused by a U-tube effect, which might occur where injection fluids cascade through the injection line and injection valve to seek a hydrostatic equilibrium with the wellbore at the point of injection.
  • valves have an abrupt opening characteristic, wherein opening of the valve can cause a sudden increase or surge in fluid pressure and/or flow. This may particularly apply to burst valves or other valves that operate using a shearing, rupturing, bursting or breaking operation.
  • valves are typically single use devices that can be used once and are then redundant. Furthermore, operation of such valves can often result in debris being released into the fluid being carried through the valve, which could lead to fouling or blocking of other components.
  • the device may be, comprise or be comprised in a device for closing a line, conduit or capillary, such as an injection line or conduit in an injection system, e.g. a downhole injection system.
  • the device may be configured to remain closed during one or more and preferably a plurality of pressure cycles.
  • the device may be operable to selectively open the line, conduit or capillary, e.g. by opening the flow path from the inlet of the device to the outlet.
  • the device may be configured to vent or relieve the line, capillary or conduit.
  • the device may comprise a flow path extending between at least one inlet and at least one outlet.
  • the device may comprise at least a first part and a second part.
  • the first part may comprise at least one engagement or attachment member.
  • the second part may comprise at least one cooperating arrangement.
  • the first part may be movable in a first direction, e.g. into a configuration where at least one of the engagement or attachment members engages, attaches or is attachable to or engageable with at least one of the cooperating arrangements of the second part.
  • the first part may be movable in a second direction, e.g. whilst at least one of the engagement or attachment members of the first part is engaged or attached to at least one of the cooperating engagements of the second part, for example, so as to move the second part and may thereby vary the flow path, e.g. open or close the flow path.
  • the first direction may be opposite to the second direction.
  • At least one or each of the engagement or attachment members and/or at least one or each of the cooperating arrangements may comprise or be comprised in a oneway mechanism, which may allow motion of the first part relative to the second part in the first or second direction but resist motion of the first part relative to the second part in the other of the first or second directions.
  • At least one or each of the engagement or attachment members and/or at least one or each of the cooperating arrangements may be, comprise or be comprised in a ratchet mechanism, such as a first ratchet mechanism.
  • the device may be configured to receive or create a differential pressure between the inlet and the outlet, in at least one configuration of the device, in use.
  • At least the first part may be in pressure communication with the flow path on upstream or inlet and downstream or outlet sides of the device. At least the first part may be driven or drivable by a differential pressure, which may be the differential pressure between upstream or inlet and downstream or outlet sides thereof. The first part may be movable in the first and/or second direction, e.g. under the pressure differential.
  • the device may comprise a first biasing means, such as a spring, piston, pressurized and/or pressurisable device, resiliently deformable member, elastomeric member, thrust washer or other thrust arrangement, and/or the like.
  • the first biasing means may be operable to bias the first part in the first and/or second directions, e.g. in a different one of the first or second directions to the direction in which the first part is moved or movable under the pressure differential.
  • the first biasing means may be operable to bias the first part in an opposite direction to the direction in which the first part is moved or movable under the pressure differential.
  • the device may be configured such that the first biasing means is compressible, resettable, pressurisable retractable, and/or contractible by the pressure differential when the pressure differential is greater than a first pressure differential threshold.
  • the first pressure differential threshold may be predefined or pre-set, e.g. by selection of an appropriate construction or arrangement of the first biasing means and/or may be selectable or adjustable, e.g. by providing variable biasing means, such as a pre-load applying arrangement configured to apply a variable pre-load to the first biasing means, e.g. a threaded compression nut and/or the like.
  • the first biasing means may be configured to provide a force that is greater than a hydrostatic pressure at the inlet, in use.
  • the pressure differential threshold may be greater than the pressure differential associated with the hydrostatic pressure at the input, in use.
  • the first part may be movable in the first or second direction when the pressure differential is greater than the pressure differential threshold.
  • the first biasing means may be configured to move the first part in the other of the first or second directions when the pressure differential is less than the pressure differential threshold.
  • the device may be adapted such that the second part is movable relative to the first part, e.g. in the second direction, by applying one or more pressure cycles, wherein each pressure cycle may comprise applying a differential pressure between the inlet and the outlet greater than the first differential pressure threshold and, optionally subsequently, applying a differential pressure between the inlet and the outlet less than the first differential pressure threshold.
  • the device may be adapted to apply a plurality of pressure cycles, wherein each pressure cycle may sequentially move the second part relative to the first part, e.g. in the second direction.
  • the device may be configured such that at least one or each of the flow paths is varied, e.g. opened or partially opened, and/or the device is placed in an open configuration, such as a first or restricted open configuration by application of one or more pressure cycles.
  • the device may be switchable between a closed configuration and an open or partially open configuration, e.g. the first open configuration, by application of one or more pressure cycles.
  • the device may be switchable between the first open configuration and a second open configuration by applying one or more further pressure cycles.
  • the first open configuration may be associated with a lower flow rate and/or smaller opening area than the second open configuration.
  • the device may be adapted such that the second part is movable relative to the first part, e.g. in the second direction, by applying one or more movement cycles, wherein each movement cycle may comprise moving the first part in the first direction relative to the second part and then moving the first and second parts (e.g. together) in the second direction.
  • the device may be adapted to apply a plurality of movement cycles, wherein each movement cycle may sequentially move the second part relative to the first part, e.g. in the second direction.
  • the device may be configured such that at least one or each of the flow paths is varied, e.g. opened or partially opened, and/or the device is placed in an open configuration, such as the first or restricted open configuration by application of one or more movement cycles.
  • the device may be switchable between a closed configuration and an open or partially open configuration, e.g. the first or restricted open configuration, by application of one or more movement cycles.
  • the device may be switchable between the first open configuration and a second open configuration by applying one or more further movement cycles.
  • the first or restricted open configuration may be associated with a lower flow rate and/or smaller opening area than the second open configuration.
  • the device may be configured to such that application of one or more or each pressure cycle results in the device undergoing corresponding one or more or each movement cycles.
  • the device may be adapted such that movement of the second part associated with one or more pressure and/or movement cycles may place the device in the first or restricted open configuration, e.g. by opening one or more first openings in the flow channel so as to allow flow between the inlet and the outlet.
  • the device may be adapted such that movement of the second part associated with one or more further pressure and/or movement cycles may place the device in the second open configuration, e.g. by opening one or more second openings in the flow channel so as to allow flow between the inlet and the outlet.
  • the one or more second openings may comprise a higher opening area and/or be associated with a higher flow rate than the one or more first openings.
  • the at least one first opening may comprise or define a restriction.
  • the first part may have a defined stroke range, e.g. by providing limiting portions for engaging a housing or sleeve at one or more limits of motion.
  • At least one or each of the engagement or attachment members may be or comprise an engaging, gripping or fixing member, which may be configured to engage, grip or fix to the cooperating arrangement(s). At least one or each of the engagement or attachment members may comprise a pawl, lock ball, extending or locking member, protrusion, hook, cam follower and/or the like.
  • At least one or each of the cooperating arrangements may comprise a recess, shoulder, flange, groove, projection, cam surface, protrusion, shelf, step and/or the like.
  • At least one or each of the engagement or attachment members and/or at least one or each of the cooperating arrangements may be configured to permit motion of the attachment member(s) past or over the at least one or each of the cooperating arrangements in the first or second direction but resist movement of the engagement or attachment member(s) over or past the cooperating arrangement(s) in the other of the first or second directions and/or be configured to engage or attach to the cooperating arrangement(s) when the engaging or fixing members are moved in the other of the first or second directions.
  • At least one or each of the cooperating arrangements may comprise a cam surface shaped to permit the engagement or attachment member(s) to pass over the cooperating arrangement(s) in one (e.g. the first or second) direction but to engage or attach to the engagement or attachment member(s) when they are moved in another or opposite direction (e.g. the other of the first and second directions).
  • the second part may comprise a plurality of cooperating arrangements.
  • the cooperating arrangements may be distributed in the first and/or second directions and/or a longitudinal or axial direction of the second part.
  • the second part may comprise one or more first, one or more second (and optionally one or more subsequent) cooperating arrangements, wherein the first, second and subsequent cooperating arrangements are separated or distributed in the first and/or second directions and/or a longitudinal or axial direction of the second part relative to the other of the first, second and subsequent cooperating mechanisms.
  • the device may be configured such that the first part is movable in the first direction, which may be under the action of the pressure differential, e.g. into a position where the one or more or each engagement or attachment member attaches or is attachable to the first cooperating arrangement.
  • the first and second parts may subsequently be movable (e.g. movable together or joined) in the second direction, which may be under the action of the first biasing means.
  • the first part may subsequently be further movable in the first direction, which may be under the action of the pressure differential, e.g. into a position where the one or more or each engagement or attachment member attaches or is attachable to the second cooperating arrangement.
  • the first and second parts may subsequently be movable (e.g.
  • the first part may subsequently be further movable in the first direction, which may be under the action of the pressure differential, e.g. into a position where the one or more or each engagement or attachment member attaches or is attachable to the subsequent cooperating arrangement(s).
  • the device may be configured to move or reposition the second part, e.g. in the second direction, relative to the first part by sequentially moving the first part in the first direction, which may be under the action of the pressure differential, so that at least one or more of the engagement or attachment members engages or attaches to one or more corresponding cooperating arrangements then moving the first and second parts in the second direction (e.g. movable together or joined), which may be under the action of the first biasing means.
  • Each sequential movement of the first part in the first direction may result in at least one or more of the engagement or attachment members engaging or attaching to respective one or more corresponding cooperating arrangements that are spaced apart in the first direction relative to the one or more corresponding cooperating arrangements engaged by or attached to the one or more of the engagement or attachment members during the previous sequential movement.
  • the device may be configured to selectively receive, apply or vary the pressure at the inlet and/or the pressure differential.
  • the device may be configured to receive or apply a pressure differential higher than the pressure differential threshold in order to move the first part in the first or second direction and to receive or apply a pressure differential lower than the pressure differential threshold in order to move the first part in the other of the first or second directions, e.g. using the first biasing means.
  • the device may comprise a third part.
  • the third part may be arranged to interact with the second part so as to resist motion of the second part in the first direction but allow motion of the second part in the second direction.
  • the third part may be or comprise or be comprised in a fixed or stationary part.
  • the second part may be movable relative to the third part, e.g. in the second direction.
  • the second part may be movable by the first part and/or under the action of the first biasing means and/or the pressure differential.
  • the third part may comprise at least one engagement or attachment member.
  • the engagement or attachment member(s) of the third part may be adapted to attach or engage with one or more or each of the cooperating mechanisms of the second part.
  • the second part may be movable in the second direction relative to the third part.
  • the system may be adapted such that one or more or each of the engagement or attachment members of the third part engages, attaches or is attachable to or engagable with one or more or each cooperating engagements of the second part.
  • the second part may be movable in the second direction into the configuration in which one or more or each of the engagement or attachment members of the third part engages, attaches or is attachable to or engagable with the one or more cooperating engagements of the second part.
  • the engagement or attachment members of the third part may be configured to allow motion of the second part in the second direction relative to the third part.
  • the engagement or attachment members of the third part may be configured to engage or attach to the cooperating mechanism(s) of the second part so as to resist motion of the second part in the first direction relative to the third part.
  • one or more of the cooperating members and/or one or more of the engagement or attachment members may comprise a cam surface.
  • One or more or each of the engagement or attachment members may be configured to cam over the one or more of the cooperating members in one direction (such as the second direction) and to engage or lock in the other direction (such as the first direction).
  • the engagement or attachment members of the third part and the cooperating mechanisms of the second part may be, comprise or be comprised in a ratchet mechanism, such as a second ratchet mechanism.
  • the second part may be movable away from or out of contact with the third part, e.g. the second part may be locatable in a configuration in which it is displaced or spaced apart from the third part in the second direction.
  • the system may be configured such that the second part may be movable into the configuration in which it is displaced or spaced apart from the third part in the second direction, e.g. by sequentially applying one or more pressure cycles and/or movement cycles.
  • the device may comprise a device body.
  • the first, second and/or third parts may be located or locatable within the device body.
  • At least one or more or each of the first and/or second openings may be through a wall of the device body, e.g. a circumferential wall of the device body.
  • the device may comprise sealing or closing means for selectively sealing or closing one or more or each of the openings or passages (e.g. one or more or each of the first openings or passages).
  • the sealing or closing means may be comprised on or in the second part.
  • the sealing or closing means may be configured to selectively open, close and/or vary the system flow path.
  • the sealing or closing means may be movable or operable by the second part, e.g. by movement of the second part.
  • the sealing or closing means may be movable between a configuration in which they close one or more of the openings or passages and/or the flow path and a configuration in which they open or partially open one or more of the openings or passages (e.g. one or more or each of the first openings or passages) and/or the flow path, e.g. by movement of the second part, such as in the second direction.
  • the sealing or closing means may comprise a sleeve or sheave or other suitable sealing arrangement.
  • the sealing or closing means may be movable or slidable, for example, in the first and/or second direction.
  • the sealing or closing means and/or the second part may comprise mutually engagable portions, such as corresponding shoulders, projections, radially extending members, slots, recesses, protrusions and/or the like.
  • the mutually engagable portions of the sealing or closing means may be spaced apart from the mutually engaeable portions of the second part, at least in an initial configuration, such that they may be brought into engagement once the second part has moved a selected or predefined distance, e.g. by the first part, which may be after a defined or predetermined number of differential pressure and/or movement cycles.
  • the sealing or closing means may be biased, e.g. by the second biasing means, into a closed configuration in which at least one or more of the passages or apertues, e.g. the first passages or apertures are closed.
  • the second biasing means may have a spring constant or force less than the first biasing means.
  • the second biasing means may be compressible, retractable or pressurizable by a force applied by the second part, e.g. when the second part is moved by the first biasing means.
  • the system may be configured such that at least one of the openings or passages (e.g. one or more or each of the first openings or passages) is opened when the third part is displaced or spaced apart from the second part.
  • the system may be configured such that at least one of the openings or passages (e.g. one or more or each of the first openings or passages) is opened after one or more pressure and/or movement cycles, e.g. a selected or predetermined number of pressure and/or movement cycles.
  • the at least one second opening or passage may be switchable between a closed and an open configuration, e.g. under the action of the pressure differential, e.g. between the inlet and the outlet.
  • the at least one second opening or passage may be switchable between a closed and an open configuration when the pressure differential is below a second pressure differential threshold, which may be lower than the first pressure differential threshold.
  • the at least one second opening or passage may be switchable between a closed and an open configuration by relative movement of at least two parts of the device, such as fourth and fifth parts.
  • the first, second and/or third parts may be comprised or provided in the fourth part.
  • the system may comprise a third biasing means.
  • the third biasing means may be provided, or arranged to act, between the fourth and fifth parts.
  • the third biasing means may be compressible, retractable, contractable and/or pressurisable by the pressure differential, e.g. when the pressure differential is greater than the second threshold pressure differential.
  • the second pressure differential may be set or defined by the third biasing means.
  • the at least one second opening or passage may be configured to open when the pressure differential is less than the second pressure differential threshold, e.g. under the action of the third biasing means.
  • the pressure differential may be reduced by opening the at least one first passage, e.g. by applying one or more pressure or movement cycles. Once the pressure differential falls below the second pressure differential threshold, then the at least one second passage or opening may open.
  • the device may comprise a locking mechanism, which may be operable to selectively lock and/or unlock the one or more second openings or passages, e.g. in the closed position and/or selectively lock and/or unlock the fourth and fifth parts, e.g. so as to prevent relative motion there-between.
  • the locking mechanism may comprise lock balls, slidable engaging devices, shear pins and/or the like.
  • the pressure differential may be controllable by controlling the pressure in the injection line.
  • the pressure may be controlled by controlling a pump attached to or in communication with the injection line or input, such as an injection pump, which may be located at the surface.
  • the first part may comprise a seat, such as a ball seat.
  • the seat may be configured to receive an operation body, such as a ball, which may be provided to the input, e.g. via the flow and/or via the injection line.
  • the device may be configured such that location of the operation body on the seat may at least partially or fully block the flow channel.
  • the device may be configured such that when the operation body is located in the seat and the input is provided with flow, then the pressure differential between the input and the output increases and/or becomes higher than the first pressure differential threshold. This may allow the first part to move in the first direction, e.g.
  • the device may comprise one or more bypass channels, such as restricted bypass channels, which may bypass the seat, e.g. so as to at least partially form one or more restricted bypasses between the inlet and the outlet.
  • Reduction in the pressure differential for example, by reducing or stopping flow to the inlet and/or allowing fluid to drain through the bypass channels, may permit the first and second means to move in the second direction, e.g. under the action of the first biasing means, for example, when the pressure differential reduces to below the first pressure differential threshold.
  • the flow path may be openable by movement of the first and second parts.
  • the first and/or second part may comprise or be configured to engage and/or move one or more sealing or closing member and/or align two through passages, e.g. after being moved together in the second direction.
  • the device may be configured to remain closed, e.g. such that the flow channel is substantially closed, during one or more pressure cycles.
  • Each cycle may comprise pressurising the injection line so that the pressure differential is above the first pressure differential threshold and then reducing the pressure in the injection line such that the first pressure differential is below the first pressure differential threshold.
  • a second aspect of the present invention relates to a device for closing a line, conduit or capillary, such as an injection line or conduit in an injection system, e.g. a downhole injection system.
  • the device may be configured to remain closed during one or more and preferably a plurality of pressure cycles.
  • the device may be operable to selectively open the line, conduit or capillary, e.g. by opening the flow path from the inlet of the device to the outlet.
  • the device may comprise or be comprised in at least one device according to the first aspect.
  • the device may be a downhole device.
  • the device may be, comprise or be comprised in a valve used or usable in an injection system, such as a vent or relief valve or other device.
  • the inlet may be attached to an injection line.
  • a third aspect of the present invention relates to a flow system, such as an injection system.
  • the flow system may comprise a device according to the first aspect and/or second aspect.
  • the flow system may be, comprise or be comprised in a downhole flow system, e.g. for injecting a fluid downhole.
  • the flow system may comprise an injection line, which may be connected to the inlet of the device.
  • the flow system may comprise a pump or other pressurising means, which may be attached or attachable to the injection line.
  • the pump and/or other pressurising means may be operable to selectively control the pressure in the injection line and/or at the inlet and/or the pressure differential.
  • the flow system may be configured for use in chemical injection.
  • the flow system may be configured for use in water de-salting injection.
  • the flow system may be configured for use in diluent injection.
  • the flow system may be configured for use in direct water injection
  • a fourth aspect of the present invention relates to a method of operating a device according to the first aspect and/or second aspect.
  • the method may comprise applying one or more pressure cycles and/or movement cycles to the inlet.
  • the pressure cycle may comprise applying a high pressure or pressure differential and a lower pressure or pressure differential.
  • the high pressure or pressure differential may be or result in a pressure differential that is greater than the first pressure differential threshold, which may be higher than a hydrostatic pressure at the inlet or in the injection line, in use.
  • the lower pressure or pressure differential may be, or result in, a pressure differential that is lower than the first pressure differential threshold.
  • the pressure cycle may comprise sequentially applying the higher pressure or pressure differential and then the lower pressure or pressure differential.
  • the method may comprise applying a plurality of pressure and/or movement cycles, e.g. until the device opens or is placed in a first or restricted open configuration, which may open the flow path from the inlet to the outlet of the device.
  • the method may comprise subsequently placing the device in a second opened configuration, which may be associated with a higher flow than the first opened configuration.
  • the method may comprise placing the device in the second opened configuration by reducing the pressure differential below a second pressure differential threshold, which may be lower than the first pressure differential threshold.
  • the method may comprise providing an operation body at the inlet, e.g. via the injection line, for example to at least partially block the flow channel, for example, so as to increase the pressure or pressure differential and/or the provide the higher pressure or pressure differential.
  • the method may comprise controlling the pump so as to provide at least part or all of the pressure cycle.
  • a fifth aspect of the present invention relates to a method of testing an injection line or conduit.
  • the method may comprise providing a device according to the first aspect and/or second aspect in or connected to or otherwise in communication with the injection line or conduit, e.g. to close the injection line or conduit.
  • the method may comprise performing the method of the fourth aspect, e.g. by applying one or more pressure cycles.
  • the higher pressure of the pressure cycle may be greater than a hydrostatic pressure at the inlet or in the injection line or conduit in use.
  • a sixth aspect of the present invention relates to a method of manufacturing or assembling a device according to the first aspect and/or second aspect and/or the system according to the third aspect.
  • the method may comprise placing or providing the locking mechanism in the locked configuration, e.g. during assembly and/or before use and/or until the device or flow system is exposed to fluid flow.
  • the method may comprise unlocking the locking mechanism in use and/or whilst the device and/or flow system is subject to flow.
  • downstream and upstream are used in a directional sense relative to the device or system, and in particular relative to the flow path which extends between the inlet and outlet.
  • downstream direction is in a direction through the flow path from the inlet to the outlet, with the upstream direction opposite this.
  • a feature defined as being on an upstream side of a reference point in the device or system may be considered to be positioned on that side of the reference point which is closer to the inlet along the flow path.
  • a feature defined as being on a downstream side of a reference point may be construed accordingly.
  • Figure 1 is a diagrammatic illustration of a wellbore system which includes injection capabilities
  • Figure 2 is a diagrammatic illustration of an alternative wellbore system which includes injection capabilities
  • Figure 3 is a diagrammatic illustration of an injection check valve for use in the system of Figure 1 or Figure 2;
  • Figures 4 and 5 are illustrations of rupture disks used to test systems that include injection capabilities
  • Figures 6 and 7 show an encapsulated rupture cartridge used to test systems that include injection capabilities
  • Figure 8 shows a cross sectional view of a device for use in an injection system, such as that shown in Figures 1 or 2, wherein the device is in a closed configuration;
  • Figure 9 shows a cross sectional view of the device of Figure 8 after having been subjected to a plurality of pressure cycles
  • Figure 10 shows a cross sectional view of the device of Figure 9 after having been subjected to additional pressure cycles so as to be placed in a first open and restricted flowing position;
  • Figure 1 1 shows a cross sectional view of the device of Figures 8 to 10 in a second open and flowing position
  • Figure 12 shows a cross sectional view of an alternative device for use in an injection system, such as that shown in Figures 1 or 2, wherein the device is in a closed configuration;
  • Figure 13 shows a cross sectional view of a device, specifically a pressure relief valve or vent, for use in a wellbore injections system, wherein the device is in a closed position;
  • Figure 14 shows a cross sectional view of the device of Figure 13 in a first operated configuration
  • Figure 15 shows a cross sectional view of the device of Figures 13 and 14 in a second operated configuration
  • Figure 16 shows a cross sectional view of the device of Figures 13 to 15 in an open and flowing configuration
  • Figure 17 is a flowchart illustrating a method of using the device, such as that of figures 8 to 11.
  • FIG. 1 A typical wellbore completion installation with injection capabilities is diagrammatically illustrated in Figure 1.
  • the wellbore generally identified by reference numeral 10, comprises a casing string 12 located within a drilled bore 14 which extends from surface 16 to intercept a hydrocarbon bearing formation 18.
  • a lower annulus area 20 defined between the casing 12 and bore 14 may be filled with cement 22 for purposes of support and sealing.
  • a production tubing string 24 extends into the casing 12 from a wellhead 26 and production tree 28.
  • a lower end of the production tubing string 24 is sealed against the casing 12 with a production packer 30 to isolate a producing zone 32.
  • a number of perforations 34 are established through the casing 12 and cement 22 to establish fluid communication between the casing 12 and the formation 18.
  • Hydrocarbons may then be permitted to flow into the casing 12 at the producing zone 32 and then into the production tubing 24 via inlet 36 to be produced to surface.
  • Artificial lift equipment such as an electric submersible pump (ESP) 37 may optionally be installed inline with the production tubing 24 as part of the completion to assist production to surface.
  • the production tree 28 may provide the necessary pressure barriers and provides a production outlet 38 from which produced hydrocarbons may be delivered to a production facility (not shown), for example.
  • a small bore injection line or conduit 40 which is often referred to as a capillary line, runs alongside the production tubing 24 from a surface located injection fluid source 42 to a downhole target location, which in the illustrated example is a lower end of the production tubing 24, below the ESP 37.
  • the injection line or conduit 40 is clamped to the outside of the production tubing 24 and is run inside the casing 12.
  • the production tubing 24 may include an optional injection mandrel 44.
  • An injection pump 46 is located at a topside location to facilitate injection of the injection fluid 42.
  • the injection pump 46 is controllable so as to deliver fluid at a selectable or required injection pressure and at a controlled flow rate, as required.
  • An injection valve 48 is located in a lower region of the injection line 40 and functions to permit fluid injection into the production tubing 24, in some cases preferentially at a constant injection rate, while preventing reverse flow back into the injection line 40, for example via a non-return or check valve 50, such as that illustrated in Figure 3.
  • the check valve 50 can be placed at a lower or downstream end of the injection line or conduit 40, near the point of injection and acts to allow flow of injection fluid from the fluid source 42 through the injection line or conduit 40 to the point of injection but prevents flow of well fluids in the reverse direction.
  • the check valve 50 can take the form of a ball 52, poppet or piston located in a flow channel 54.
  • the ball 52 is biased toward an inlet 56 of the valve so as to close the flow channel 54 by a spring 58 or other suitable biasing means.
  • the ball 52 is movable in an axial direction against a force applied by the spring 58 under the flow of fluid supplied to the inlet 56 of the check valve 50 in order to allow flow from the inlet 56 to an outlet 60 of the check valve 50.
  • the spring 58 in conjunction with the pressure applied by the reverse flow, is operable to force the ball 52 against the inlet 56, thereby closing the check valve 50.
  • injection is provided via a small bore injection line
  • the injection line can be 1 ⁇ 4" (63mm), 3/8" (95mm) or 1 ⁇ 2" (126mm) outer diameter in size, but is not limited to these sizes.
  • Injection may be provided to deliver a diluent to reduce the viscosity of the wellbore fluids and permit easier lifting by the ESP 37.
  • injection may deliver treating chemicals into the wellbore system, for example to inhibit scale, rust, wax, emulsions and the like.
  • the system 10' of Figure 2 comprises a larger injection line or conduit 40' to facilitate higher rates of flow. Whilst the larger injection line or conduit 40 can be run on the outside of the production tubing 24 within the casing 12, for larger flows the injection line or conduit 40' comprises a larger upper tubing section 41 , so called 'slim tubing', that is located within the production tubing 24. The injection line or conduit 40' is then diverted around other equipment such as the ESP 37 near the point of injection.
  • injection valves are still typically used, for example to check any flow in a reverse direction.
  • One option for overcoming this problem and allowing pressure testing of the injection line or conduit 40, 40' is to install a device 62 within the capillary line, generally near the lowest point of injection, that will block the line whilst a test pressure is applied to the injection line or conduit 40, 40'. After pressure testing of the injection line or conduit 40, 40' is completed, this device 62 can then be taken to a higher pressure which will shear out or rupture the blockage device 62 thus allowing forward flow and conventional operation of the injection system 10, 10' in use.
  • this blockage device 62 can be a burst disk 62a such as those shown in Figures 4 and 5 or rupture cartridge 62b as shown in Figures 6 and 7.
  • the burst disk 62a operates on the principle of being able to maintain and hold a pressure in the injection line or conduit 40, 40' by providing a secure blockage of the injection line or conduit 40, 40' in the direction of the topside and fluid source 42.
  • the burst disk 62a can take the form of a flat or curved thin metallic item. When a sufficient pressure is applied, it will burst to a fully open position thus allowing forward flow to occur.
  • Burst disks 62a however possess significant disadvantages in that, as they burst, they may emit debris into the fluid injection system which may be detrimental to any device that is included in the injection system downstream of the burst disk 62a.
  • burst disk 62a is upstream of the check valve 50, debris from the burst disk 62a may undesirably lodge in the check valve 50.
  • An alternative to a burst disc 62a is an encapsulated rupture cartridge 62b, such as that shown in Figures 6 and 7, which is based on an enclosed chamber 64 with a movable piston 66.
  • This piston 66 rests on a cylindrical body 68 that is designed to axially shear at a predefined applied pressure allowing movement of the movable piston 66 thus opening a flow path through the cartridge 62b.
  • an over pressure above a rupture threshold must be applied. This involves applying a high pressure to the upstream portion of the injection line or conduit 40, 40'.
  • the resulting sudden release of the high pressure fluid can produce a pressure shock effect which could potentially be damaging to any device downstream of the rupture device 62a, 62b. Even if the burst disk 62a or rupture cartridge 62 is mounted downstream of any such device, a high rate of flow can still occur as the pressure in the injection line or conduit 40, 40' is dissipated during the rupture process.
  • rupture device 62a, 62b can generally only be used once, i.e. the rupture device 62a, 62b can be opened once by rupturing the device 62a, 62b when the predefined opening pressure is reached.
  • the rupture device 62a, 62b can generally only be used once, i.e. the rupture device 62a, 62b can be opened once by rupturing the device 62a, 62b when the predefined opening pressure is reached.
  • some wells are run with the injection line or conduit 40, 40' split (see e.g. Figure 2) and connected later by a device that will allow down hole coupling of the injection line or conduit 40, 40'.
  • a device that will allow down hole coupling of the injection line or conduit 40, 40'.
  • there may be a need to pressurise the whole completion for other purposes such as the setting of a production packer and then performing further integrity pressure testing of the well completion.
  • Figure 8 shows a device 100 that can be used instead of a rupture device 62a, 62b such as those shown in Figures 4 to 7, e.g. in an injection system 10, 10' such as those shown in Figures 1 and 2.
  • the device 100 is configured to close the injection line or conduit 40, 40' whilst one or more pressure cycles are applied to the injection line or conduit 40, 40', but be selectively openable to allow normal operations using the injection line or conduit 40, 40'.
  • the device 100 comprises a device body 102 (e.g. a fifth part of the device 100) that defines an inlet 104 and an outlet 106, with a flow channel 108 extending therebetween.
  • the inlet 104 is connected or connectable to the injection tubing 40, 40' so as to receive fluid from the fluid source 52 (i.e. uphole), whilst the outlet 106 is in fluid communication with the injection point, i.e. a downhole side of the device 100.
  • a hollow inner part 1 10 (e.g. a fourth part of the device 100) is provided within the flow channel 108 between the inlet 104 and the outlet 106.
  • the inner part 1 10 is sealably mounted to the device body 102 and locked against motion relative to the device body 102 by a locking mechanism 1 12 so as to close the flow channel 108.
  • the hollow chamber 1 13 within the inner part 110 is in communication with the outlet 106 of the device 100.
  • a portion of the actuating piston 1 16 extends inside and seals an inlet opening 118 in the inner part 1 10 so as to be in fluid communication with the inlet 104 side of the flow channel 108.
  • the first actuating assembly 1 14 further comprises a first ratchet arm extending from an end of the actuating piston 116 that is away from the inlet opening 1 18 of the inner part 110.
  • Also provided in the inner part is a second part in the form of a ratchet pin 122 and a third part in the form of a second ratchet arm 124.
  • the first actuating assembly 1 14 is slidably mounted within the inner part 110, so as to be slidably movable in a longitudinal or axial direction of the inner part 120.
  • a first biasing means in the form of a sensor spring 125 extends between the first actuating assembly 1 14 and the inner part 110 in order to bias the first actuating assembly 1 14 towards an end of the hollow chamber 1 13 of the inner part 110 having the inlet opening 1 18.
  • the sensor spring 125 is mounted via an adjusting nut 127 for adjusting the force exerted by the sensor spring 125.
  • the force applied by the sensor spring 125 equates to a first pressure differential threshold required to move the first actuating assembly 114.
  • This first pressure differential threshold is set to be greater than the hydrostatic pressure that will occur in the injection line or conduit 40 between the fluid source 42 (i.e. at the surface) and the device 100 by appropriate selection of the sensor spring 125 and/or adjustment of the adjusting nut 127.
  • This hydrostatic pressure is a function of the fluid density and the vertical height.
  • the sensor spring 125 is therefore selected and/or adjusted using the adjusting nut 127 to provide a force that will require a pressure differential between the inlet 104 and the outlet 106 generated by an applied pressure in the injection line or conduit 40 to be greater than the hydrostatic pressure in the injection line or conduit 40. Therefore, even when the hydrostatic pressure is applied to the inlet 104, the sensor spring 125 retains the actuating assembly 1 14 in its home position, i.e. at a limit of its range of motion toward the inlet opening 1 18.
  • the actuating assembly 1 14 is provided with longitudinally extending recesses 129, which receive corresponding guide members of the inner part 110, in order to control the range of motion of the actuating assembly 1 14.
  • the second ratchet arm 124 is fixed to the inner part 1 10.
  • An outer circumferential surface of the ratchet pin 122 is provided with a plurality of cooperating mechanisms in the form of sloped protrusions 126.
  • the plurality of sloped protrusions 126 are distributed longitudinally or axially on a portion of the ratchet pin 122.
  • Each sloped protrusion 126 comprises an obliquely sloped or camming face 128 that faces towards the inlet opening 1 18 of the inner part 1 10 and a substantially radially extending or engaging face 130 that faces away from the inlet opening 1 18 of the inner part 1 10.
  • Each of the first and second ratchet arms 120, 125 comprise a plurality of pawls 132a, 132b that are configured to engage with the protrusions 126 of the ratchet pin 122.
  • each pawl 132, 132b comprises an obliquely sloping or camming face 132 arranged to engage the obliquely sloping or camming faces 128 of the protrusions 126 of the ratchet pin 122 and a substantially radially extending or engaging face 136 arranged to engage the substantially radially extending or engaging face 130 of the protrusions 126 of the ratchet pin 122.
  • the ratchet pin 122 is movable relative to the inner part 1 10 in a second direction (e.g. towards the inlet opening 1 18 of the inner part 1 10) by varying the differential pressure applied between the inlet 104 and the outlet 106 in order to operate the first actuating assembly 1 14, the first ratchet arm 120, the ratchet pin 122 and the second ratchet arm 125 in order to move the ratchet pin 122 in the second direction using a ratcheting operation.
  • the pawls 132b of the second ratchet arm 124 cooperate with the protrusions 126 of the ratchet pin 122 to prevent the ratchet pin 122 from moving in the first direction (i.e. away from the inlet opening 1 18).
  • the motion of the actuating assembly 1 14 under the pressure differential seen by the actuating piston 116 at the inlet opening 1 18 causes the first ratchet arm 120 to move in the first direction relative to the ratchet pin, with the pawls 132a of the first ratchet arm 120 camming off the obliquely sloping surfaces 128 of one or more protrusions 126 of the ratchet pin 122 so as to ride over the protrusions 126 until the limit of motion of the actuating assembly 1 14 (set by the recesses 129) is reached.
  • the pressure applied to the inlet 104 via the injection line or conduit 40, 40' by the injection pump 46 is reduced.
  • the pressure at the inlet opening of the inner part 1 10 is also reduced until the pressure differential between the inlet 104 and the outlet 106 is less than the first pressure differential threshold.
  • the spring overcomes the applied pressure and moves the actuating assembly 1 14 in the second direction to return it to its original starting home position (at its limit of motion toward or closest to the inlet opening 118).
  • the ratchet pin 122 is retained in this position by the second ratchet arm, which prevents the ratchet pin 122 from moving in the first direction back towards its original position.
  • the above ratchet mechanism allows the device 100 to be operated by application of one or more high and low pressure cycles. This may permit application of more than one high pressure test operation on the injection line or conduit 40, 40', if so desired.
  • the device 100 does not include any bursting or shear off devices or members. As such, release of debris due to bursting or shearing components may be minimised or eliminated.
  • the ratchet pin is provided with the locking mechanism 1 12, which selectively secures the inner part 110 to the body 102 in order to seal the flow channel 108 through the device 100.
  • This allows the device 100 to be assembled and handled without any pressure being applied and allow for the inclusion of an opening spring 138 which is configured to push the inner part 110 and the device body 102 apart from one another.
  • the locking mechanism 112 comprises a plurality of balls 140 which, in a closed or initial configuration, are disposed in an aperture 141 in the body 102 and are located between a projecting portion 142 of a shaft 143 of the ratchet pin 122 and a wall of a cavity 144 in the inner part 1 10, in order to trap the balls 140 in both the aperture 141 of the body 102 and the cavity 144 of the inner part 1 10, thereby locking the inner part 1 10 and the device body 102 against relative motion.
  • This locking mechanism 112 is for assembly purposes because when the device 100 is in use, there will be a hydrostatic pressure applied to the inlet 104 and therefore the inner part 110. This pressure pushes the inner part 1 10 and the device body 102 together towards each other by virtue of the pressure at the outlet 106 of the device (in communication with the hollow interior of the inner part 110) being at a lower pressure than the pressure at the inlet 104. Therefore the higher inlet pressure will tend to keep the inner part 1 10 and the device body 102 together and engaged in use. As such, in the closed configuration in use, the inner part 1 10 is held in contact with the device body 102 by the pressure differential between the inlet 104 and the outlet 106.
  • a locking mechanism 1 12 that uses lock balls 140 is described above, it will be appreciated that other locking mechanisms, e.g. using locking elements, a collet or other suitable mechanism may be used.
  • This locking mechanism 1 12 may permit easy assembly, handling and installation of the device 100.
  • the device 100 defines at least two sets of selectively openable passages 148, 150 between the inlet 104 and the outlet 106.
  • a first set of flow passages 148 comprises restricted flow passages, having a smaller cross sectional area than the second flow passages 150 or by being formed of porous media, a series of very small or tortuous paths and/or other suitable restriction mechanism.
  • the device 100 is configured such that the first (restricted) flow passages 148 are opened before the second flow passages 150.
  • opening of the device 100 releases pressure gradually and may reduce or minimise the effect of pressure shock.
  • the device 100 is provided with the first flow passages 148, which extend through the wall of the inner part 1 10 from an outside (i.e. an inlet 104 side) to an inner side (i.e. an outlet 106 side) thereof.
  • a slidable closing member in the form of a sleeve 152 is provided inside the inner part 1 10 so as to sealably close the first flow passages 148 in the closed configuration of the device 100.
  • the sleeve 152 is biased into the closing position by a sleeve spring 154 that is compressed between the inner part 1 10 and the sleeve 152.
  • Shoulders 156 or other radially extending portions of the ratchet pin 122 are configured to engage the sleeve in a certain position of the ratchet pin 122, after it has undergone a corresponding number of ratcheting movements / pressure cycles in order to move the ratchet pin 122 a corresponding distance in the second direction, as shown in Figure 10.
  • This controlled or restricted flow allows the pressure differential between the inlet 104 and the outlet 106 to be gradually dissipated, which may thereby minimise or prevent shocks due to sudden release of pressure, e.g. as may be the case with a burst valve or cylinder.
  • the device 100 is also provided with the compressed opening spring 138 that acts between the device body 102 and the inner part 1 10 so as to bias them apart.
  • the differential pressure that results in the device body 102 and inner part 1 10 being separated from each by the opening spring 138 is defined only by the force and therefore equivalent pressure defined by the opening spring 138. As such, the differential opening pressure of the device 100 can be significantly reduced in comparison to a conventional burst type line block device.
  • the above ratchet mechanism may allow for a variety of configurations. For instance it may be configured to allow for a large number, for example ten, pressure cycles in order to complete the opening process.
  • the device By partially moving the ratchet pin 122 and/or actuating assembly 1 14 the device may be set up to open at five pressure cycles.
  • the device 100 can therefore be set up to open at any number of cycles only limited by the number of potential ratchet positions provided in the ratchet pin 122.
  • an alternative device 100' is shown in Figure 12.
  • the device 100' is substantially similar to that shown in Figures 8 to 1 1 but comprises a side inlet 104' that offers a higher available area and path for flow through the device 100' compared to the device 100 of Figures 8 to 11.
  • the injection line or conduit 40' is conveyed through large bore tubing which may be run within the production tubing 24.
  • This configuration allows the slim tubing to be used as a pulling tool to allow any equipment within the well completion below the injection line or conduit 40' to be removed.
  • One possible means of providing this functionality is to use a ball drop relief system, where a ball is dropped into the slim tubing. This ball then travels down through the slim tubing until is encounters a physical restriction where the diameter or of the ball is deliberately larger than a physical stop it encounters. The restriction then allows pressure to be applied to the slim tubing which in turn will meet the restriction of the ball which in turn provides a pressure resistance. This positive pressure in the slim tubing can then be used to shear out a relief device or burst disk which then provides a means of relieving the fluid form the slim tubing.
  • the soft open approach and principle described above can also be used for this application and may be based on a multiple cycle/ratchet system or may be a single cycle actuation design where one application of a pressure cycle engages a relief mechanism to relieve fluid from the slim tubing.
  • the valve 100' comprises a valve body 202 defining an inlet 204, an outlet 206 and a flow path 20 there between.
  • a first part in the form of an inner part 210 is slidably mounted within the valve body 202.
  • a plurality of flow passages 212 extend through walls of the valve body 202 and, in a closed configuration of the valve 100', as shown in Figure 13, the flow passages are sealably closed by the inner part 210 and seals 214.
  • the inner part 210 also comprises apertures 215, corresponding to the flow passages 212. However, in the closed configuration, the inner part is located such that the apertures are longitudinally spaced from the flow passages 212, with the seals 214 being provided there between.
  • a second part in the form of an engagement sleeve 216 is slidably mounted within the valve body 202. An operating spring 218 is compressed between the valve body 202 and the engagement sleeve 216 so as to bias the engagement sleeve 216 towards the inlet 204 and the flow passages 212.
  • the engagement sleeve 216 is provided with a limiter 220, which is configured to engage with a corresponding limiter 222 on the inner wall of the valve body 202 so as to limit the motion of the engagement sleeve 216 in a second direction towards the inlet 204.
  • the engagement sleeve 216 is provided with lock collets 224 that are biased radially outwardly but, in the closed configuration of the valve 100' are retained against the bias in a recess 226 in the engagement sleeve 216 by the inner part 210.
  • lock collets 224 are described, it will be appreciated that lock balls or other suitable locking mechanisms may be used.
  • an actuating ball 227 is provided in the injection line or conduit 40' so that it comes to rest on a shoulder 228 on an inlet facing end of the engagement sleeve 216.
  • This differential in pressure eventually overcomes the force applied by the operating spring 218 when the pressure differential becomes greater than a threshold value defined by the operating spring 218. This allows the engagement sleeve 216 and also the lock collect to move in a first (axial) direction away from the inlet 204 and towards the outlet 206, compressing the operating spring 218 in doing so.
  • the lock collet 224 extends radially outwardly due to the bias on the collet 224 into recess slots or over the end or a shoulder of the inner part 210 to thereby engage, attach or hook the inner part 210, i.e. the inner part 210 has now been locked onto the engagement sleeve 216, as shown in Figure 15.
  • the line pressure in the slim tubing is then removed by reducing flow.
  • the ball 227 offers a significant resistance to flow which is the mechanism to allow the differential pressure to occur.
  • the valve 100' includes a very small internal leakage from the inlet 204 to the outlet 206 by way of a single or series of micro equalisation ports 230. These ensure that there can be no lock of pressure on the downstream side in a static condition where there is no flow present. Due to the equalisation effect, as flow and therefore pressure reduce, the operating spring 218 pushes the engagement sleeve 216 back towards its initial position. However as the lock collet has engaged the inner part 210, the operating spring 218 moves both the engagement sleeve 216 and inner part 210 to the rest position of the engagement sleeve 216.
  • This movement aligns the apertures 215 in the inner part 210 with the flow passages 212 in the valve body 202.
  • These flow passages 212 which are significantly larger than the micro equalisation ports 230, communicate the inside of the valve body 202 to the annulus or another volume or region as is required for the vent and relief of fluid pressure.
  • FIG. 17 A summary of a method of operating the devices, such as the device 100 shown in Figures 8 to 1 1 is shown in Figure 17.
  • the device 100 is initially in a closed configuration, thereby blocking the flow channel 108 between the inlet 104 and the outlet 106 (step 305).
  • a pressure cycle is performed, wherein an overpressure is applied at the inlet 104, to thereby cause a pressure differential between the inlet 104 and the outlet 106 that is greater than a first pressure differential threshold required to overcome the sensor spring 125 and actuate the first actuating assembly 1 14 in the first direction (Step 310).
  • the pawls 132a of the first ratchet arm cam over one or more protrusions 126 on the ratchet pin 122 since the ratchet pin 122 is prevented from moving in the first direction by engagement between the pawls 132b of the second ratchet arm 124 and one or more protrusions 126 on the ratchet pin 122.
  • the over pressure is removed and the pressure differential between the input 104 and the output is lowered to below the first pressure differential threshold.
  • the sensor spring 125 acts to move the actuating assembly 1 14 back in the second direction. This causes the radially extending faces 136 on the pawl 132a of the first ratchet arm 120 to engage with corresponding radially extending faces 130 of the protrusions 126 of the ratchet pin 122 thereby causing the ratchet pin 122 to move in the second direction along with the actuating assembly 114 (Step 315).
  • This ratcheting action is repeated in order to sequentially move the ratcheting pin 122 in the first direction until the locking mechanism 1 12 is unlocked and the shoulders 156 on the ratchet pin 122 engage and slide the sleeve 152 away from the first channel passages 148 (Step 320).
  • flow between the inlet 104 and the outlet 106 can occur via the first passages 148.
  • Step 325 the opening spring 138 is operable to separate the device body 102 and the inner part 110, thereby opening the second passages 150 and permitting full flow through the flow channel 108.

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  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Multiple-Way Valves (AREA)

Abstract

L'invention concerne un dispositif et un système ainsi que des procédés associés de fonctionnement ou de production du dispositif, le dispositif étant configuré de manière à commander l'écoulement dans une conduite, un conduit ou un capillaire. Le dispositif comprend au moins un orifice d'entrée, au moins un orifice de sortie et au moins un chemin d'écoulement s'étendant entre le ou les orifices d'entrée et le ou les orifices de sortie. Le ou les orifices d'entrée et/ou orifices de sortie peuvent être raccordés à la conduite, conduit ou capillaire. Le dispositif comprend au moins une première partie et une seconde partie. La première partie comprend au moins un élément de fixation ou de mise en prise. La seconde partie possède au moins un agencement de coopération. La première partie est mobile dans une première direction selon une configuration où au moins un des éléments de fixation ou de mise en prise entre en prise, se fixe ou peut être fixé ou peut entrer en prise avec au moins un des agencements de coopération de la seconde partie. La première partie est mobile dans une seconde direction alors qu'au moins un des éléments de fixation ou de mise en prise de la première partie entre en prise ou se fixe à au moins un des agencements de coopération de la seconde partie de manière à déplacer la seconde partie et à ainsi faire varier l'ouverture du chemin d'écoulement et/ou à ouvrir et/ou fermer ce dernier. Éventuellement, au moins un ou chacun des éléments de fixation ou de mise en prise et/ou au moins un ou chacun des agencements de coopération font partie d'un mécanisme à cliquet.
PCT/GB2015/051781 2014-08-28 2015-06-18 Système d'écoulement WO2016030658A2 (fr)

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GB1415275.5 2014-08-28
GBGB1415275.5A GB201415275D0 (en) 2014-08-28 2014-08-28 Soft Open Device

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Cited By (1)

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WO2020152622A1 (fr) * 2019-01-24 2020-07-30 The Wellboss Company, Inc. Outil de manchon de fond de trou

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WO2014037584A1 (fr) 2012-09-10 2014-03-13 Tco As Dispositif d'injection

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AU722886B2 (en) * 1996-04-18 2000-08-10 Halliburton Energy Services, Inc. Circulating valve responsive to fluid flow rate therethrough and associated methods of servicing a well
CN101563522A (zh) * 2006-07-03 2009-10-21 Bj服务公司 步进式棘轮机构
GB0922267D0 (en) * 2009-12-21 2010-02-03 Phimister David Downhole tool
US8870153B2 (en) * 2010-08-19 2014-10-28 Superior Energy Services, Llc Pressure activated ratcheting valve
WO2014105026A1 (fr) * 2012-12-27 2014-07-03 Halliburton Energy Services, Inc. Porte latérale coulissante à indexation de pression et à actionnement rapide

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WO2014037584A1 (fr) 2012-09-10 2014-03-13 Tco As Dispositif d'injection

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020152622A1 (fr) * 2019-01-24 2020-07-30 The Wellboss Company, Inc. Outil de manchon de fond de trou
CN112513417A (zh) * 2019-01-24 2021-03-16 井博士股份有限公司 井下套管工具
CN112513417B (zh) * 2019-01-24 2022-12-06 井博士股份有限公司 井下套管工具

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