CN103890313B - There is the autonomous fluid control device of the movable valve plate selected for downhole fluid - Google Patents

Abstract

Describing equipment and the method for automatically controlling fluid flowing in missile silo, wherein, the viscosity such as changed over based on fluid behaviour or density control fluid flowing.Fluid flows in eddy current assemblies, and wherein, centrifugal force is applied to fluid.The fluid that viscosity is less has the biggest speed of the bigger fluid of specific viscosity and centrifugal force.Fluid leaves minor air cell by eddy current outlet and peripheral outlet.Autonomous valve element moves between an open position and a closed；At open position, fluid is freely flowed by peripheral outlet, and in closed position, fluid is limited by the flowing of peripheral outlet.Valve element is moved by the centrifugal force of fluid so that valve element is moved to closed position by the fluid with bigger centrifugal force, thus reduces the whole fluid streams by eddy current assemblies.

Description

There is the autonomous fluid control device of the movable valve plate selected for downhole fluid

Technical field

The present invention relates generally to control fluid stratum from hydrocarbon containing formation for selectivity and enters in well The method and apparatus of the flowing in production casing.More particularly, the present invention relate to according to fluid stream Dynamic certain characteristic such as viscosity or density, (at least one of which exports to have multiple outlet by utilization Can be closed by valve element, valve element then by the fluid in eddy current centrifugal force activate) minor air cell, The method and apparatus controlling fluid flowing.

Background technology

During the well through hydrocarbon containing formation is carried out well completion operations, produce pipe and various equipment are installed in In well such that it is able to securely and effectively produce fluid.Such as, for preventing from non-consolidation or loose consolidation Stratum output granular materials, some completion includes being positioned at that expectation produces near section is one or more anti- Sand sieve.In other completion, for controlling to produce the flow of fluid entrance production pipe, it is common practice to Completion tubular column installs one or more inflow control device together.

Output object from any given production pipeline section often has multiple fluid composition, such as natural gas, Oil and water, and produce the component ratio time to time change of fluid.Therefore, along with the ratio of fluid composition Change, fluid flow characteristics also will be similarly varied.Such as, when the amount of natural gas ratio produced in fluid Time higher, time higher with the oil mass ratio in fluid compared with, the viscosity of fluid will relatively low and fluid close Degree also can be relatively low.Often expectation reduces or prevents output one composition to be beneficial to output another kind composition.Example As, in oil-producing well, it is possible to expectation reduces or get rid of the output of natural gas and the output of maximum oil. Although multiple downhole tool has been used to demand based on fluid and has controlled the flowing of fluid, but still need All reliably for the flow control system controlled fluid flow under various flox conditions.In addition it is also necessary to from Operate mainly that is respond the change of conditions down-hole, and without the signal sent by operator from ground Flow control system.In addition it is also necessary to there is no the flow control system of campaign-styled mechanical part, above-mentioned campaign-styled machine Tool parts (include the corrosion due to the gravel in fluid or blocking effect) under disadvantageous conditions down-hole and hold Easily break down.Similar Problems also can produce in the case of injecting (fluid flows into rather than flows out stratum) Raw.

Summary of the invention

Described is for automatically controlling equipment and the method for fluid flowing in missile silo, wherein, Fluid flowing is controlled based on the fluid behaviour changed over time.In a preferred embodiment, fluid stream Entering in eddy current assemblies, in this eddy current assemblies, centrifugal force applies to fluid.Viscosity less or the thickest Fluid (such as water or natural gas), will have the bigger or thicker fluid of specific viscosity (such as oil) Big speed and centrifugal force.The periphery that fluid exports by being positioned at the eddy current of bottom and arranges along eddy current wall goes out Minor air cell is left both mouthful.Autonomous pivot rotary valve member moves between an open position and a closed；? Open position, fluid is freely flowed by peripheral outlet；And in closed position, fluid is gone out by periphery The flowing of mouth is reduced or prevented.Valve element is moved by the centrifugal force of fluid so that have bigger centrifugal force Viscosity less fluid valve element is moved to closed position, thus reduce by eddy current assemblies is whole Fluid stream.In a preferred embodiment, pivot rotary valve member is cantilever.Preferably, pivot rotary valve member court It is biased by the spring to open position so that pivot rotary valve member is when centrifugal force reduces, such as at fluid viscosity Reopen during reduction.

Accompanying drawing explanation

Multiple feature and advantage for a more complete understanding of the present invention, now together with accompanying drawing with reference to for this The detailed description of invention, wherein, the respective figure labelling in different accompanying drawings refers to the part of correspondence, and attached In figure:

Fig. 1 is to include showing of the most multiple well system from main fluid flow control system It is intended to；

Fig. 2 is top view, that is implement the present invention principle utilize eddy current assemblies from main fluid flow control The schematic of fluid flow of device；

Fig. 3 is side view, that is implements the fluid flow control device utilizing eddy current assemblies of the principle of the present invention Sectional view；

Fig. 4 is top view, that is according to an embodiment of the invention from the fluid stream of main fluid flow control device Dynamic schematic diagram, should make high viscosity fluid pass through this from main fluid flow control device and flow from main fluid flow control device, And valve element is in an open position；

Fig. 5 is top view, that is according to an embodiment of the invention from the fluid stream of main fluid flow control device Dynamic schematic diagram, should make low viscosity fluid pass through this from main fluid flow control device and flow from main fluid flow control device, And valve element is in the closed position；

It will be understood by those skilled in the art that directional terminology such as " on ", " under ", " on ", D score, " upwards ", " downwards " etc. be with illustrative embodiment explicitly according to them attached Using as being illustrated in figure, upward direction is just directed towards the top of respective figure, and downwards To the bottom being just directed towards respective figure.And term different from above-mentioned in situation is used to represent required orientation Time, this specification can state or make it to understand." upstream " and " downstream " be used to represent relative to The position on ground or direction, wherein " upstream " represents the relative position along well towards ground or moves, And " downstream " expression is left the relative position on ground along well or moves.

Detailed description of the invention

Although the formation of multiple embodiments of the present invention described in detail below and application, but this area skill Art personnel are it will be recognized that the invention provides multiple applicable creative concept, these creative concepts Can be embodied as under multiple particular context.Specific embodiment described in this specification illustrates such as in a concrete fashion What forms and applies the present invention rather than limits the scope of the present invention.

Utilize autonomous flow control device carry out fluid flowing control and application description can be in following United States Patent (USP) Find with in patent application, each being incorporated at this in these U.S. patents and patent applications whole in Hold for all purposes: filing date on March 25th, 2004, entitled " Apparatus and Method For Creating Pulsating Fluid Flow,And Method of Manufacture For the Apparatus ", belong to the U.S. Patent No. 7404416 of Schultz；Filing date in February, 2005 8 days, belong to Webb, the U.S. of entitled " Apparatus for Creating Pulsating Fluid Flow " State's patent the 6976507th；Filing date December in 2009 10 days, entitled " Fluid Flow Control Device ", belong to the U.S. Patent Application Serial Number 12/635612 of Schultz；Filing date 2010 April 29, entitled " Method and Apparatus for Controlling Fluid Flow Using Movable Flow Diverter Assembly ", belong to the U.S. Patent Application Serial Number of Dykstra 12/770568；Filing date on February 4th, 2010, entitled " Method and Apparatus for Autonomous Downhole Fluid Selection With Pathway Dependent Resistance System ", belong to the U.S. Patent Application Serial Number 12/700685 of Dykstra；Filing date 2010 On March 30, entitled " Tubular Embedded Nozzle Assembly for Controlling the Flow Rate of Fluids Downhole ", belong to the U.S. Patent Application Serial Number 12/750476 of Syed； Filing date on June 2nd, 2010, entitled " Flow Path Control Based on Fluid Characteristics to Thereby Variably Resist Flow in a Subterranean Well ", belong to The U.S. Patent Application Serial Number 12/791993 of Dykstra；Filing date June 2, title in 2010 For " Alternating Flow Resistance Increases and Decreases for Propagating Pressure Pulses in a Subterranean Well ", belong to the U.S. Patent Application Serial Number 12/792095 of Fripp； Filing date on June 2nd, 2010, entitled " Variable Flow Resistance System for Use In a Subterranean Well ", belong to the U.S. Patent Application Serial Number 12/792117 of Fripp；Application Day is on June 2nd, 2010, entitled " Variable Flow Resistance System With Circulation Inducing Structure Therein to Variably Resist Flow in a Subterranean Well ", belong to the U.S. Patent Application Serial Number 12/792146 of Dykstra；Filing date 2010 9 Month 10 days, entitled " Series Configured Variable Flow Resistors For Use In A Subterranean Well ", belong to the U.S. Patent Application Serial Number 12/879846 of Dykstra；Application Day is on August 27th, 2010, entitled " Variable Flow Resistor For Use In A Subterranean Well ", belong to the U.S. Patent Application Serial Number 12/869836 of Holderman；Shen It please be December in 2010 2 days, entitled " A Device For Directing The Flow Of A Fluid day Using A Pressure Switch ", belong to the U.S. Patent Application Serial Number 12/958625 of Dykstra； Filing date December in 2010 21 days, entitled " An Exit Assembly With a Fluid Director For Inducing and Impeding Rotational Flow of a Fluid ", U.S. of belonging to Dykstra special Profit patent application serial numbers 12/974212；Filing date December in 2010 31 days, entitled " Cross-Flow Fluidic Oscillators for use with a Subterranean Well ", belong to the United States Patent (USP) of Schultz Patent application serial numbers 12/983144；Filing date December in 2010 13 days, entitled " Downhole Fluid Flow Control System and Method Having Direction Dependent Flow Resistance ", belong to the U.S. Patent Application Serial Number 12/966772 of Jean-Marc Lopez；Application Day it is December in 2010 31 days, entitled " Fluidic Oscillators For Use With A Subterranean Well (includes vortex) ", belong to the U.S. Patent Application Serial Number of Schultz 12/983153；Filing date on April 11st, 2011, entitled " Active Control for the Autonomous Valve ", belong to the U.S. Patent Application Serial Number 13/084025 of Fripp；The applying date It is on April 8th, 2011, entitled " Moving Fluid Selectors for the Autonomous Valve ", belong to the U.S. Patent Application Serial Number 61/473700 of Fripp；Filing date 2011 4 Months 8 days, entitled " Sticky Switch for the Autonomous Valve ", belong to U.S. of Fripp State's patent application serial number 61/473699；And it is filing date on May 3rd, 2011, entitled " Centrifugal Fluid Separator ", belong to the U.S. Patent Application Serial Number 13/100006 of Fripp.

Fig. 1 is the schematic diagram of a well system, and this well system typically represents with reference " 10 ", including The autonomous flow control system of multiple principles being embodied as the present invention.Well 12 extends through multiple stratum.Well Eye 12 has generally vertical section 14, and the top of generally vertical section is equipped with casing string 16.Well 12 also has Basic deviated section 18 (being illustrated as level), basic deviated section extends through hydrocarbon containing formation 20.Such as figure Shown in, the essentially horizontal section 18 of well 12 is Open-Hole Section.Although being here depicted as level, bore hole Borehole segments, but the present invention is in any orientation and the most effective in open hole well or cased hole.The present invention Also injected system can be equally well used for, as described below.

Extend in tubing string 22 is arranged on well 12 and from ground.Tubing string 22 provide for make fluid from Stratum 20 upstream marches to the pipeline on ground.Multiple autonomous flow control systems 25 and multiple production pipeline section 24 It is arranged in each different tubing string 22 produced in section of adjacent formations 20.Pipe is produced each The either end of section 24 is provided with packer 26, and packer 26 provides between the wall of tubing string 22 and well 12 Fluid-tight.Space between every a pair adjacent packer 26 limits and produces section.

In the embodiment shown, each of which in multiple production pipeline sections 24 possesses sand control ability.With production The relevant sand screen element of pipeline section 24 or filter medium are designed that fluid flows through, but prevent size foot Enough big particulate matters flow through.Although the present invention is without possessing associated sand screen, if but using anti- If sand sieve, then the sophisticated design of relevant to fluid flow control system sand screen element is the most also Non-key.Industry has the design for sand screen that many is widely known by the people, and is not discussed in detail at this.This Outward, the exterior circumferential at any of above filter medium can be provided with the protection with multiple perforation passed through Property outer housing.

By using the flow control system 25 of the present invention in one or more production sections, it is possible to output stream The volume of body and composition realize a certain degree of control.Such as, in oil-producing operates, if less desirable Fluid composition, such as water, steam, carbon dioxide or natural gas, enter multiple production section wherein it One, then the flow control system in this section just will independently limit or stop from this section produced fluid.

The term " natural gas " used in this specification or the meaning of " gas " are at room temperature and pressure condition Under with gas phase exist hydrocarbon mixture (and non-hydrocarbon materials of changes of contents).This term is not offered as Natural gas in the down well placement of the system of the present invention also in gas phase.Actually should be understood that described flow control system At pressure and temperature, the natural gas position mainly in liquefaction is used (although there may be other Composition and some composition may be in gaseous states).Idea of the invention is to liquid or gas or there is liquid simultaneously In the case of body and gas effectively.

Fluid in inflow production pipeline section 24 typically comprises and exceedes a kind of fluid composition.Typical composition is sky So gas, oil, water, steam or carbon dioxide.Steam and carbon dioxide are often used as towards producing pipe Driveing the injection fluid of hydrocarbon, natural gas, oil and water were present in stratum the most originally.These Ratio in composition fluid in flowing into each production pipeline section 24 is incited somebody to action in time and based on stratum and well In condition and change.It is similar to, in the length of whole production casing, flows in each production pipeline section The composition of fluid also can change to section district by district significantly.Described flow control system is designed to, when any specifically Section reduces when having the undesirably composition of higher proportion or limits the output from this section.

Therefore, produce when the production section corresponding to the concrete flow control system in multiple described flow control systems When going out the undesirably fluid composition of larger proportion, the flow control system in this section will limit or stop from this The production stream of section.Therefore, its of the expectation fluid composition (be in this example oil) of output larger proportion It produces section will have bigger contribution to the output stream entering tubing string 22.Specifically, from stratum 20 to The flow of tubing string 22 will have to flow through flow control system (rather than being simply streamed in tubing string) place at fluid Reduce.In other words, described flow control system forms flowing restriction for fluid.

Although Fig. 1 illustrates the flow control system that is provided with in each production section, it should be appreciated that a life The system of any number of present invention can be set in the section of producing region, without departing from the principle of the present invention.Similar Ground, it is relevant that the flow control system of the present invention not necessarily produces section to each.Described flow control system can be only Some being arranged in well produces in section, or may be provided in pipe passage in order to process multiple production Section.

Fig. 2 is the top view of fluid control device according to an embodiment of the invention, it is shown that by this fluid Control the fluid flowing path of device.Fig. 3 is the elevation of fluid control device.This fluid control device based on Eddy current, and there is eddy current assemblies 30, eddy current assemblies 30 has minor air cell 32, and minor air cell 32 has periphery Wall 34, end face 36 (Fig. 2 is not shown), bottom surface 38 (bottom surface is to eddy current outlet 40 inclination) and Peripheral outlet 42.This device is used as a part for fluid control systems 25, with extra from main flow (those described by the most combined patent application in this application are from main fluid control for member control apparatus Device) combine, it is configured to and extra fluid control systems, inflow control device serial or parallel connection, And it is arranged on upstream or the downstream of this kind of device.

Eddy current outlet 40 is preferably positioned in the bottom surface 38 of minor air cell by center type, as it can be seen, but Be eddy current outlet 40 also dependent on it is contemplated that in eddy current assemblies produce fluid-flow mode and pass through whirlpool The expectation type of flow of stream module outlet, is arranged in bottom surface 38.Eddy current outlet 40 exports with eddy current Passage 44 fluid circulates, and eddy current exit passageway 44 guides fluid to flow to downstream from eddy current assemblies 30.Such as, The bootable fluid of eddy current exit passageway 44 such as by tubing string 22 flow to ground, return in well 12, stream To other pipeline section 24, flow to aboveground side or side, down-hole according to application, etc..

Peripheral outlet 42 is positioned at the periphery of minor air cell, preferably passes through perimeter wall 34 and forms opening.Periphery Outlet 42 flows to the peripheral outlet passage 46 fluid circulation in downstream with guiding fluid from eddy current assemblies 30.Example As, the bootable fluid of peripheral outlet passage 46 is such as flowed to ground by tubing string 22, is returned to well 12 In, flow to other pipeline section 24, flow to aboveground side or side, down-hole according to application, etc..Exit passageway 44 It is connectable to be in the identical or different passage of assemblies downstream with 46.Such as, in one embodiment, Fluid is guided to ground from two outlets by producing pipe.Its benefit comes from the fluid flowing through these outlets Ratio from the fluid arriving different terminals not flowed through.In other embodiments, exit passageway can will flow Body guides to different terminals.

Eddy current assemblies 30 has entrance 48；Entrance 48 is preferably located in perimeter wall 34, in order to allow Fluid flows in minor air cell 32.Entrance 48 circulates with access road 50 fluid, and access road 50 guides Fluid flows in eddy current assemblies from upstream.Such as, access road 50 can be by the production stream from well 12 Body, by being conducted through the passage produced in section, producing pipe, production via screen casing, ICD etc. Fluid, provides the fluid flowed in eddy current assemblies 30.

Eddy current assemblies 30 also includes autonomous pivoting member 52.As employed herein, term " pivots " The meaning be on axis or as on axis arcuately or the path of annular is moved, or be designed to The most mobile.In a preferred embodiment, autonomous pivoting member 52 is attached to eddy current perimeter wall 34.Can Selection of land, pivoting member 52 can be attached to eddy current end face 36, bottom surface 38, multiple surface or insertion element (such as pivotal pin or bar, articulated elements and other type hinge connector as known in the art) Combination.Autonomous pivoting member can respond and be applied power on that element by the fluid of flowing in minor air cell, At open position 56 (as see in Fig. 2 and Fig. 4) with closed position 58 (as at Fig. 5 In see as) between, move along path 54.

Valve element 52 is preferably directed towards open position 56 and is biased.Bias effect can pass through art technology Known to personnel, mode realizes.In a preferred embodiment, pivoting member 52 is by the rigidity of element and bullet Property, biased towards open position.That is, element 52 serves as response and applies fluid on the surface 60 Power and the cantilever spring that bends (utilize term " to pivot " in this manual and contain cantilevered element Bending).The behavior of cantilevered element 52 can select and associated materials based on component size, material Performance (such as elastic modelling quantity, density, modulus of shearing etc.) selects.In alternative embodiments, example As, element 52 can according to methods known in the art, utilize pressure (stage clip), pulling force (extension spring), Torsion (torsion spring), plane (leaf spring), wind spring, leaf spring and other spring assembly bias.

Additionally, pivoting member 52 such as can be mounted in eddy current assemblies by pin or bar, element 52 encloses Rotate around above-mentioned pin or bar (not shown).A preferably advantage of cantilever design is easy to prevent Flowing around the attachment end of element.

As it has been described above, autonomous pivoting member 52, along bending between open position 56 and closed position 58 Path 54 is moved.In a preferred embodiment, element in use moves to closed position, and effectively limits The fluid that system or minimizing are flowed by peripheral outlet 42.This element can desirably design, to be in Fully prevent the flowing by peripheral outlet during closed position or make flowing reduce.In a preferred embodiment, Element 52 includes contact surface 62, and contact surface 62 contacts perimeter wall 34 when element is in the closed position.Unit Part 52 also can the end face of contact assembly and bottom surface and/or against the end face of assembly and sealing bottom surface.As at Fig. 2 With Fig. 5 sees, in certain embodiments, even when valve element is in the closed position, few The fluid stream of amount can still on valve element, under or flowing around.Even if if it is desire at element Also having certain flow in the case of closed position, but element is designed to reduce does not prevents fluid Flowed by peripheral outlet.Such as, length or the shape of cantilevered element can be selected to so that this yuan Part will not fully block peripheral outlet, or the rigidity of cantilevered element can make this element to bend or The mobile degree to fully obstructed flow.Alternatively, can be at any desired locations, by reaching biasing The mobile limit of spring or otherwise, such as, by spike dowel or retainer, prevent from described pivoting unit Part moves the position to fully obstructed flow.

In use, fluid " F " is flowed in access road 50 by entrance 48, and enters minor air cell In 32.Minor air cell 32 causes helical flow pattern in a fluid, such as see in the diagram. The fluid spiraled obtains speed along with it in period of spiraling and accumulates centrifugal force.When autonomous valve element 52 Time in an open position, fluid leaves minor air cell 32 by both eddy current outlet 40 and peripheral outlet 42. Eddy current assemblies can desirably be designed to make these output flow separately.Such as, when autonomous valve element 52 When being in its open position 56, between eddy current outlet 40 and peripheral outlet 42, fluid stream may be logically divided into 60:40,50:50,40:60, or other desired ratio.In closed position, stream (measuring) ratio increases to 100:0,90:10,80:20, or other desired or possible ratio.

A part for fluid stream impinges upon on autonomous valve element 52.In a preferred embodiment, fluid stream impact On the surface 60 of element 52.Element is made when the centrifugal force of the fluid acted on element 52 overcomes During the elastic force that 52 bias towards open position, element 52 moves along path 54 towards closed position 58. When element 52 moves towards closed position, fluid is reduced by the flowing of peripheral outlet 42, and relatively The fluid of vast scale is conducted through eddy current outlet 40 flowing.Act on the power on element the biggest, element court It is the most far the most mobile to closed position, until element is fully closed.In closed position 58, as above Described, fluid is reduced or prevented by the flowing of peripheral outlet 42.Fluid at larger proportion passes through whirlpool In the case of flow export 40 flowing, reduced by total fluid stream of assembly 30.By total stream of assembly Body decrement can be selected by the design of building block.Such as, when element 52 is in the closed position, 70% or more can be reduced by total fluid stream of assembly.When the fluid impinged upon on element 52 from When mental and physical efforts are reduced to less than the bias force acted on element 52, element will move towards open position 56 Dynamic.

Due to centrifugal force time to time change, thus element 52 will response centrifugal force and bias force and multiple Move between position.In producing well, the ratio of fluid composition changes over, and thus causes fluid Characteristic such as viscosity, density etc. change.Such as, formation fluid initially can have the oil of higher proportion with And the water of minor proportion is gentle.In time afterwards, the water that formation fluid can have higher proportion is gentle And the oil of minor proportion.Eddy current assemblies 30 utilizes the change of fluid behaviour, changes fluid and passes through assembly The type of flow.Along with fluid behaviour changes, such as, change to that viscosity is relatively small or density is relatively small State, described valve element will because the power of the centrifugal force on element and/or biasing member reduce and open. Owing to the characteristic of fluid changes over, valve element will open and close many times.

Fig. 3 illustrates eddy current assemblies according to an embodiment of the invention, and the most full-bodied fluid is by this whirlpool Stream component flow.When formation fluid has relatively high viscosity, such as, when formation fluid, there is higher ratio During example oily, fluid flows under relatively low viscosities, and the type of flow trends towards tangential spiraling Flow less and Radial Flow is more, as seen in Figure 3.The viscosity of fluid is the lowest, relatively Speed is the lowest, thus produces relatively small centrifugal force.Less centrifugal force will be at element surface 60 The power that upper generation is relatively small.Such as, 1000 centipoises (cP), one gallon and be in 14 bar pressures per minute Oil under the conditions of power, is simulated in example components, thus produces 400kPa on element surface 60 Pressure.Relatively low pressure and power will not move element 52, and element 52 rests on open position 56 or leans on Nearly open position 56.Therefore, the most more tacky fluid exports 40 and both peripheral outlet 46 by eddy current, Flow through eddy current assemblies.

Fig. 4 illustrates eddy current assemblies according to an embodiment of the invention, and the most low viscous fluid is by this whirlpool Stream component flow.When formation fluid changes to having relatively low viscosity (gas of such as higher proportion or water) Time, fluid trends towards with higher rate, along the most tangential path flowing, thus produces around minor air cell Convoluted flow.This type of flow can be seen in the diagram.Such as, one gallon and be in 6 per minute Water under the conditions of bar pressure, is simulated in example components, thus produces on element surface 60 The pressure of 400kPa.Similarly, 0.02cP, 2 gallons and gas under the conditions of being in 3 bar pressures per minute, Produce the analog result of 300kPa pressure on the surface 60.Of a relatively high pressure and centrifugal force trend towards Move element 52 towards closed position 58, thus reduce or prevent fluid from flowing through peripheral outlet 42.Therefore, The most low viscous fluid mainly or only by flow export 40, flows through eddy current assemblies.The most effective Decrease by total fluid stream of assembly that (the most total fluid stream is by peripheral outlet and whirlpool The combination stream of flow export).

Along with fluid behaviour changes in being provided with the useful life of instrument of described eddy current assemblies, this eddy current group The fluid that part will make viscosity relatively low has relatively large flow velocity (flow rate), and makes viscosity higher Fluid has relatively low flow velocity.When viscosity changes to relatively low (such as water from relatively high (such as oil) Or oil) time, described autonomous valve element will move towards closed position, and reduce by peripheral outlet Flowing.When viscosity-modifying to relatively high viscosity, the such as ratio at water and/or gas declines and oil In the case of ratio rises, described autonomous valve element pivots towards open position to returning, total by assembly Flow (flow rate) increases.This element will change position owing to fluid viscosity changes over continuation Put that (system described herein as is for viscosity, it should be appreciated that similar concept is applicable to observe different stream The situation of bulk properties such as density etc.).

Eddy current assemblies 30 described herein is exemplary in nature.Can utilize other variants (the most multiple entrances, many Individual entrance peripherally wall is in diverse location, or under alternate manner, different numbers and position multiple go out Mouthful), change the shape of minor air cell and sidewall thereof and the difformity of autonomous valve element and size, etc. Deng.Additionally, extra feature, such as blade, groove and other directed element can be added into whirlpool In flow chamber.Exemplary embodiment described herein can be revised in detail, details for example, access road and whirlpool Angle, the position of peripheral outlet, peripheral outlet and the angle of perimeter wall between stream wall, multiple passage Proportional sizes, chamber and other element etc..

Above in the way of exemplary embodiment, it is provided that to the explanation in use of described assembly, wherein, Produce fluid and be conducted through assembly 30 from stratum.Produce fluid can before and after flowing through component 30, Flowed by screen casing, passage, tubular sections, circular passage etc..Assembly 30 also can be such as the reference combined Described in document and as understood by those skilled, it is used for injecting and other well completion work. The present invention also can with other flow control system, such as inflow control device, sliding sleeve and industry in Other flow control device being widely known by the people is used together.The system of the present invention and other flow control system both can in parallel, Also can connect.

Although describing the present invention above with reference to illustrative embodiment, but this description should not be at limiting meaning Upper interpreted.To those skilled in the art, with reference to above description, these explanations to the present invention Property embodiment and the multiple amendment of other embodiments and assembled scheme would is that obviously.Therefore, Following claims should contain any this kind of modification or embodiment.

Claims (20)

1. for an equipment for automatically control fluid flowing in missile silo, wherein, fluid stream Dynamic fluid behaviour changes over, and described equipment includes:

Eddy current assemblies, has and limits the end face of minor air cell, bottom surface and perimeter wall；

Entrance, it is provided that enter the fluid communication in described minor air cell；

Eddy current exports, and is positioned at the bottom surface of described minor air cell；

Peripheral outlet, the perimeter wall along described minor air cell is set；And

Autonomous pivot rotary valve member, is attached to described eddy current assemblies, in open position and closed position Between move, allow fluid from the flowing of described peripheral outlet at described open position, and in described closedown Position is reduced fluid and is flowed by described peripheral outlet.

Equipment the most according to claim 1, wherein, described pivot rotary valve member is cantilever.

Equipment the most according to claim 1, wherein, described pivot rotary valve member is opened towards described Position is biased.

Equipment the most according to claim 3, also includes spring, and wherein, described pivot valve Element, by described spring, is biased towards described open position.

Equipment the most according to claim 1, wherein, described pivot rotary valve member is being in described pass Prevent fluid from being flowed by described peripheral outlet during closed position.

Equipment the most according to claim 1, wherein, described pivot rotary valve member can respond in institute State the centrifugal force of the fluid of flowing in minor air cell and move.

Equipment the most according to claim 6, wherein the centrifugal force of fluid subtracts along with the viscosity of fluid Little and increase.

Equipment the most according to claim 1, wherein said assembly has by its multiple outlets Total flow, and wherein, described total flow is when described pivot rotary valve member moves towards described closed position Reduce.

Equipment the most according to claim 2, wherein, cantilevered described valve element is by bending And pivot.

Equipment the most according to claim 1, wherein the characteristic changed over of fluid is viscous Degree.

11. equipment according to claim 1, also include that downhole tool, described eddy current assemblies are positioned at In described downhole tool.

12. 1 kinds for controlling the method that fluid flows in missile silo, described missile silo has and therefrom prolongs The well extended through, said method comprising the steps of:

Enable flow through downhole tool flowing；

Fluid is made to flow in minor air cell；

Enabling flow across at least two outlet in described minor air cell, the first outlet is along the periphery quilt of minor air cell Arrange, and the second outlet is set near the bottom of described minor air cell；

Response is the change of the fluid behaviour of the fluid of flowing in described minor air cell, moves and is positioned at described eddy current Autonomous valve element in room；

By mobile described autonomous valve element, reduce the fluid flowing through described first outlet.

13. methods according to claim 12, further comprising the steps of: described certainly by movement Main valve element, prevents fluid flowing from exporting by described first.

14. methods according to claim 12, wherein, described fluid behaviour is viscosity.

15. methods according to claim 12, wherein, the change of fluid-responsive characteristic, fluid In described minor air cell, the speed of flowing increases.

16. methods according to claim 12, wherein, the change of fluid-responsive characteristic, by The centrifugal force that in described minor air cell, the fluid of flowing applies increases.

17. methods according to claim 12, wherein, the change of fluid-responsive characteristic, apply Power on the surface of described autonomous valve increases.

18. methods according to claim 12, wherein, the step of mobile described autonomous valve element Including moving described autonomous valve element towards closed position；

And also comprise the following steps: another change of fluid-responsive characteristic, move institute towards open position State autonomous valve element.

19. methods according to claim 12, wherein, the step of mobile described autonomous valve element Also include: fluid-responsive characteristic over time, alternately towards closed position with towards open position Mobile described autonomous valve element.

20. methods according to claim 12, wherein, the step of mobile described autonomous valve element Also include pivoting described autonomous valve element.