CN108240206A - Switchable tune flow control water installations and its control water completion flow string - Google Patents
Switchable tune flow control water installations and its control water completion flow string Download PDFInfo
- Publication number
- CN108240206A CN108240206A CN201810015538.8A CN201810015538A CN108240206A CN 108240206 A CN108240206 A CN 108240206A CN 201810015538 A CN201810015538 A CN 201810015538A CN 108240206 A CN108240206 A CN 108240206A
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- China
- Prior art keywords
- central tube
- fluid
- control water
- switchable
- water installations
- Prior art date
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
Abstract
The present invention discloses a kind of switchable tune flow control water installations and its control water completion flow string, which includes：Outer tube；Central tube；The tube wall of the central tube, which is equipped with, is passed through its internal fluid through-hole；Draining machine structure；The draining machine structure has spin chamber, flow inlet, outflow port and first passage；The spin chamber with the central tube radially vertical cross sectional shape for round and center line with it is radial parallel；The outflow port is located on the center line of the spin chamber；The first passage connects the flow inlet with the spin chamber；The first passage is passed through in the spin chamber and the fluid of the input spin chamber is caused to form eddy flow；Switch module；The switch module can into the central tube, control be opened and closed in trandfer fluid to the fluid through-hole.The switchable tune flow control water installations can realize opening or closing for different production layers in the case of fixed tubular column.
Description
Technical field
The present invention relates to oilfield well completion technical field more particularly to a kind of switchable tune flow control water installations and its control water completion
Oil extraction system.
Background technology
After stream water control technique is adjusted to be introduced in oil extraction in oil field system, usually setting is used for controlling the inflow speed of formation fluid
Degree, typical practice is that oil well is carried out sectional well completion using isolation packer, places to control ground on each screen casing node
The tune flow control water installations of the inflow velocity of layer fluid by increasing Additional pressure differential, limit hypertonic section of yield, balanced inflow profile,
Delay side water and bottom water coning phenomenon, the final total output for improving oil well.
But tune flow control water installations of the prior art can only be realized by different structures and completion parameter design to not
It is controlled with formation fluid inflow velocity, generally function is single, although edge and basal water can be prevented to a certain extent,
It realizes balanced inflow profile, but is substantially increased if there is aqueous in the output of institute's key-course position, water control device may nothing at this time
Method plays expected effect.
Invention content
It to recover the oil in view of the above-mentioned problems, the object of the present invention is to provide a kind of switchable tune flow control water installations and its control water completion
System can generate Additional pressure differential to formation fluid, limits hypertonic section of yield, balanced inflow profile, and can be in fixed tubular column
In the case of realize that different production layers open or close, without rountrip or carry out tubing string operation.
To achieve the above object, technical solution provided by the invention is as follows：
A kind of switchable tune flow control water installations, including：
Outer tube；
The central tube being sheathed in the outer tube；The tube wall of the central tube, which is equipped with, is passed through its internal fluid through-hole；
The draining machine structure being set between the outer tube and the central tube；The draining machine structure have spin chamber, into
Head piece, outflow port and first passage；The spin chamber with the central tube radially vertical cross sectional shape to be round and
Center line with it is radial parallel；The outflow port connects the spin chamber and the fluid through-hole；The outflow port is located at described
On the center line of spin chamber；The first passage connects the flow inlet with the spin chamber；The first passage
Length direction is parallel with the axial direction of the central tube；The first passage is passed through in the spin chamber and causes the input rotation
The fluid for flowing chamber forms eddy flow；
The switch module being set in the central tube；The switch module can be to the fluid through-hole to the center
Control is opened and closed in trandfer fluid in pipe.
Preferably, the flow inlet is located at the upper end of the draining machine structure and on the extended line of the first passage；
The first passage edge is passed through with the spin chamber direction tangential in the spin chamber.
Preferably, the second channel for connecting the flow inlet and the spin chamber is additionally provided on the draining machine structure；Institute
Second channel is stated along linear extension；Angle between the second channel and the first passage is acute angle.
Preferably, the cross-sectional area of the first passage is less than the cross-sectional area of the second channel.
Preferably, it is additionally provided with rectifier structure in the spin chamber；The rectifier structure is included along outflow port circumferential direction
Evenly arranged multiple cowling panels.
Preferably, the draining machine structure have mutually back to outer binding face and interior binding face；The outflow port is located at described
On interior binding face；The interior binding face is plane, is bonded with the outer wall with the central tube, and the outer binding face is circular arc table
Face is bonded with the inner wall with the outer tube.
Preferably, the outer wall of the central tube is equipped with the holding tank for installing the draining machine structure；The fluid through-hole is set
It is placed on the bottom wall of the holding tank；The interior binding face is bonded with the bottom wall of the holding tank, and the outflow port and institute
Fluid through-hole is stated to align connection；The flow inlet is located at outside the holding tank.
Preferably, the switch module has layer position oil channel and gangs up oil channel；The oil channel of ganging up will
The switch module along the central tube axially through；Layer position oil channel is connected with the fluid through-hole；It is described to open
Layer position oil channel and the break-make inside the central tube can be controlled by closing component.
Preferably, the switch module includes the control mechanism of check valve, switch valve and the control switch valve；Institute
It states check valve with layer position oil channel to be connected, the check valve only allows to come from the layer position oil channel fluid to institute
State switch valve flow；The switch valve can switch the outflow of fluid.
Preferably, the check valve includes valve seat and the first spool；The lower end of the valve seat is sealed condition, described
It is communicated inside layer position oil channel and the valve seat；First spool is located at the upper end of the valve seat by the upper end of the valve seat
It blocks；First spool can be opened by the active force of the upper end along the lower end of the valve seat to the valve seat；
The switch module includes the casing for connecting the valve seat upper end and the second valve in the casing
Core；Second spool can slide axially along the central tube；The wall of the casing, which is equipped with, to be connected inside and outside the casing
Logical discharge through-hole；Second spool has the first position for blocking the discharge through-hole and opens the discharge through-hole
The second position.
Preferably, the control mechanism includes pressure gauge, processor, driving mechanism；The pressure gauge and the processor
It is connected；The pressure gauge is used to measure the Fluid pressure in the central tube；The processor is according to the manometry
Fluid pressure pass through the driving mechanism second spool driven to act.
Preferably, the top of the external outer tube of the central tube is also arranged with screen casing；The lower end connection institute of the screen casing
State the upper end of outer tube.
Preferably, the outer wall of the central tube is equipped with multiple rectangular preiection structures；The length of the rectangular preiection structure
Direction is parallel with the axial direction of the central tube；Circumferential uniformly arrangement of multiple rectangular preiection structures along the central tube；Phase
The groove that becomes a mandarin is formed between adjacent two rectangular preiection structures；The central tube is equipped with multiple unhurried currents below the groove that becomes a mandarin
Slot；The width of the unhurried current slot along the central tube circumferential direction is more than the width of the groove that becomes a mandarin, and multiple unhurried current slots and
Multiple grooves that become a mandarin are along the center pipe axle to being aligned one by one；The draining machine there are one being set in each unhurried current slot
Structure.
Preferably, the end of the groove that becomes a mandarin described in of the unhurried current slot is equipped with multiple protruding blocks circumferentially arranged.
A kind of control water completion flow string, including：
Oil pipe in energy tripping in casing；The upper end of the oil pipe is equipped with hanging packer；The oil pipe is in the suspension envelope
Multiple isolation packers are equipped with every the lower section of device；The isolation packer is used for the oil jacket between described sleeve pipe and the oil pipe
Annular space sealed separation；
As above any switchable tune flow control water installations；On oil pipe between per the two neighboring isolation packer
There are one the switchable tune flow control water installations for series connection.
Advantageous effect：
In conclusion this it is switchable tune flow control water installations by being equipped with draining machine structure, switch module, can not only be according to stream
Additional drag caused by the automatic adjustment of body flow, reduces the influence of reservoir heterogeneity, balanced inflow profile, and can be real
In the case of present fixed tubular column, ground, water filling opens or closes switch module by way of suppressing, and flexibly realizes different productions
Layer opens or closes, and without rountrip or carries out tubing string operation, which is not only simple in structure, and makes
Make it is at low cost, and with extensively using value.Meanwhile the switchable applicable scene for adjusting flow control water installations 6 is extensive, it both can be with
For automatically controlling for oil well, automatically controlling for gas well can be used for.
With reference to following explanation and attached drawing, only certain exemplary embodiments of this invention is disclosed in detail, specifies the original of the present invention
Reason can be in a manner of adopted.It should be understood that embodiments of the present invention are not so limited in range.In appended power
In the range of the spirit and terms of profit requirement, embodiments of the present invention include many changes, modifications and are equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
Used in a other embodiment, with the feature in other embodiment it is combined or substitute other embodiment in feature.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously
It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those skilled in the art, without having to pay creative labor, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the switchable tune flow control water installations structure diagram that one embodiment of the present invention provides；
Fig. 2 is the sectional view of Fig. 1；
Fig. 3 is the draining machine structure vertical view of Fig. 1；
Fig. 4 is the A-A sectional views of Fig. 3；
Fig. 5 is the control water completion flow string structure diagram that one embodiment of the present invention provides.
Specific embodiment
In order to which those skilled in the art is made to more fully understand the technical solution in the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described implementation
Example is only part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiments obtained under the premise of creative work is not made, should all belong to guarantor of the present invention
The range of shield.
It should be noted that when element is referred to as " being set to " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood meaning of technical staff is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more
The arbitrary and all combination of relevant Listed Items.
To prevent the edge and basal water of oil well, inhibit the water outlet of water yield formation section, overcome the problems, such as oil well premature water breakthrough, improve production
Oil mass, as shown in Figures 1 to 5, one embodiment of the present invention provide a kind of switchable tune flow control water installations 6, including：Outer tube
13；The central tube 14 being sheathed in the outer tube 13；The tube wall of central tube 14, which is equipped with, is passed through its internal fluid through-hole 36；If
The draining machine structure 12 being placed between the outer tube 13 and the central tube 14；The draining machine structure 12 have spin chamber 15, into
Head piece 20, outflow port 16 and first passage 18；The section shape vertical with 14 radial direction of central tube of the spin chamber 15
Shape for round and center line with it is radial parallel；The outflow port 16 connects the spin chamber 15 and the fluid through-hole 36；Institute
Outflow port 16 is stated to be located on the center line of the spin chamber 15；The first passage 18 is by the flow inlet 20 and the eddy flow
Chamber 15 connects；The length direction of the first passage 18 is parallel with the axial direction of the central tube 14；The first passage 18 is logical
Enter in the spin chamber 15 and the fluid of the input spin chamber 15 is caused to form eddy flow；It is set in the central tube 14
Switch module；The switch module can into the central tube 14, control be opened and closed in trandfer fluid to the fluid through-hole 36
System.
In the switchable tune flow control water installations 6 for using present embodiment, as shown in figure 5, by the switchable tune flow control water
Device 6 is connected on oil pipe 4 (specifically, upper and lower ends difference connected pipes 4 of central tube 14), and is insulated positioned at two isolation
Between device 5, the original state of switch module can be in an open state, and fluid through-hole 36 can convey (stratum) stream into central tube 14
Body, that is, communicated inside control water-bound and central tube 14.Wherein, two isolation packers 5 correspond to a production layer, each to produce
Corresponding one of layer is switchable to adjust flow control water installations 6, to realize the tune flow control water of different production layers.
In process of production, formation fluid enters the annular space between central tube 14 and outer tube 13, then through draining machine structure 12
Flow inlet 20 enters spin chamber 15 through first passage 18, and formation fluid forms high-speed rotational, ground laminar flow in spin chamber 15
Body during eddy flow to 16 helical flow of outflow port at 15 center of spin chamber, according to the law of conservation of momentum, by vortex chamber
Room 15 high speed rotation accelerate after fluid by center outflow port 16 when can generate higher throttle resistance, so can be over the ground
Layer fluid generates Additional pressure differential, limits hypertonic section of yield, balanced inflow profile.
When the production fluid water content of the production layer corresponding to switchable tune flow control water installations 6 significantly rises, this can be opened
Close adjust flow control water installations 6 can not when playing control water effect, can by switch module to the fluid through-hole 36 in described
Trandfer fluid is closed in heart pipe 14, i.e. the trandfer fluid into central tube 14 of block fluid through-hole 36, so as to give birth to accordingly
Payzone is closed, and inhibit the production layer goes out dilutional hyponatremia problem, improves oil well service life and recovery ratio.Meanwhile the switchable tune flow control
The applicable scene of water installations 6 is extensive, both can be used for automatically controlling for oil well, can be used for automatically controlling for gas well.
It should be noted that the switchable tune flow control water installations 6 can be adapted for vertical shaft, it is readily applicable to horizontal well.
" upper and lower " position relationship described herein is the position relationship relative to well head.Wherein, it is close to well head in the two
On, under being far from well head, certainly, upper and lower directions is vertical direction in the shaft, can be relative to well head in horizontal well
Position relationship determine overlying relation.
In the present embodiment, the upper and lower ends of central tube 14 can connect with oil pipe 4, be used to produce layer in central tube 14
Production liquid (formation fluid) flow into and be delivered to ground.The axial direction of central tube 14 can centered on pipe 14 length direction.Outer tube
13 fixing sleeves are set on outside central tube 14, are formed with what is communicated with the outside of outer tube 13 between the outer tube 13 and the central tube 14
Fluid channel.The fluid channel can input formation fluid, meanwhile, draining machine structure can be installed between outer tube 13 and central tube 14
12, the flow inlet 20 of draining machine structure 12 is communicated with fluid channel.In this way, formation fluid can enter draining machine structure through fluid channel
12 flow inlet 20, and sequentially enter the inside of draining machine structure 12.
In this embodiment, outer tube 13 can be threadedly connected to outside central tube 14, and to all parts in outer tube 13
Form protective effect.The screw connection point of outer tube 13 and central tube 14 is located at the lower section of draining machine structure 12.Outer tube 13 and center
The connecting portion of pipe 14 can have sealing structure (such as sealing ring), with prevent into fluid channel fluid occur leakage and
It cannot be introduced into draining machine structure 12.
Further, the top of the external outer tube 13 of the central tube 14 is also arranged with screen casing 7；Under the screen casing 7
End connects the upper end of the outer tube 13.Fluid channel between outer tube 13 and central tube 14 is connected by screen casing 7 with outside, with defeated
Enter formation fluid.The screen casing 7 can be filtered the formation fluid of inflow, can so play sand control and protect the device
Effect.The upper end of outer tube 13 is equipped with mating interface 8, is connect with the lower end with screen casing 7 and ensures that the fluid in screen casing 7 is not outer
Stream.
In view of formation fluid, its flow regime is complicated after reservoir, screen casing 7 enter, for ease of regulation and control and smooth entrance
In the flow inlet 20 of draining machine structure 12, the outer wall of the central tube 14 is equipped with multiple rectangular preiection structures 9；The rectangular preiection
The length direction of structure 9 is parallel with the axial direction of the central tube 14.Multiple rectangular preiection structures 9 are along the central tube 14
Circumferential uniformly arrangement；The groove that becomes a mandarin is formed between two neighboring rectangular preiection structure 9.The central tube 14 is in the groove that becomes a mandarin
Lower section is equipped with multiple unhurried current slots 11.The unhurried current slot 11 is more than the width of the groove that becomes a mandarin along the circumferential width of the central tube 14
Degree, and multiple unhurried current slots 11 are aligned one by one with multiple grooves that become a mandarin along the central tube 14 is axial.It is each described slow
The draining machine structure 12 there are one being set in chute 11.
Wherein, the flow direction under the guiding for the groove that becomes a mandarin of the formation fluid after screen casing 7 is rectified into along center
The axial flowing of pipe 14, it is ensured that the fluid state for flowing into draining machine structure 12 keeps stablizing, to be adjusted to fluid inflow.Meanwhile it is
Prevent flow velocity too fast, since the groove width of unhurried current slot 11 is more than the groove that becomes a mandarin, flow velocity when fluid enters unhurried current slot 11 through the groove that becomes a mandarin
It can reduce, so that fluid state is more stablized.The rectangular preiection structure 9 can also prop up the inner wall of outer tube 13
Support.
Preferably to adjust fluid state, being equipped with close to the end of the groove that becomes a mandarin for the unhurried current slot 11 is multiple along week
To the protruding block 10 of arrangement.What multiple protruding blocks 10 were installed on unhurried current slot 11 enters head piece position, and fluid enters slow through the groove that becomes a mandarin
Stop rectification by multiple protruding blocks 10 during chute 11, once slowed down.Multiple protruding blocks 10 can be identical with shape, can not also
Together, specifically, protruding block 10 can be rectangular preiection block 10.Wherein, holding tank and draining machine structure 12 are along the axial position of central tube 14
In the lower section of multiple protruding blocks 10, and positioned at centre position of the unhurried current slot 11 along circumferentially width.With above-mentioned rectangular preiection structure 9
Similar, protruding block 10 can equally support the inner wall of outer tube 13.
In draining machine structure 12, the flow inlet 20 is located at the upper end of the draining machine structure 12 and positioned at the first passage
On 18 extended line.In this way, formation fluid can enter in first passage 18 after entering flow inlet 20 according to inertia, and then can be with
It rapidly enters in spin chamber 15 and forms eddy flow.Fluid, which enters through first passage 18 in spin chamber 15, forms eddy flow, wherein, it should
First passage 18 is straight way, and the first passage 18 can be passed through the spin chamber along with 15 direction tangential of spin chamber
In 15.In this way, outer rim of the fluid through spin chamber 15 that first passage 18 is discharged enters in spin chamber 15, and to spin chamber
16 high speed rotary motion of outflow port at 15 centers, and higher throttle resistance is formed at outflow port 16.
In draining machine structure 12, the generally disc structure of spin chamber 15, the radial direction of the spin chamber 15 and central tube 14
Vertically.Wherein, spin chamber is approximate disc, and the finish and flatness of spin chamber are more demanding.Specifically, vortex chamber
The flatness of the inner wall of room is less than ± 0.001mm, and surface roughness is less than 0.00016mm.
The outflow port 16 (being passed through by center line) is set in the center of spin chamber 15, spin chamber 15 can be
Oblate rod structure can also be equipped with the side surface of outflow port 16 as the conical surface, in this way, the depth (or thickness) of spin chamber 15 is from outer
Edge is gradually deepened to center, specifically, the conical surface number of degrees can be less than 5 degree.Outflow port 16 is worn by the center line of spin chamber 15
It crosses, positioned at the center of the side surface of spin chamber 15, the diameter selection range of outflow port 16 is 1mm-4mm, specifically may be used
It is specified flexibly to be chosen according to field situation.Outflow port 16 forms nozzle structure, to have preferable restriction effect, outflow port 16
Taper selection range be 20 ± 5 degree.
In view of not only containing crude oil, but also usually contain water in general formation fluid, for according to the corresponding life controlled
The variation (such as content ratio of crude oil and water) of payzone position fluid flow and physical property, can carry under different flows and physical property
For different resistance pressure drops, there is more wide applicability.
Viscosity based on formation fluid Crude Oil is larger, and the inertia of water is larger, can also be set on the draining machine structure 12
There is the second channel 19 for connecting the flow inlet 20 and the spin chamber 15.The second channel 19 is along linear extension；It is described
Angle between second channel 19 and the first passage 18 is acute angle.As can be seen that since flow inlet 20 is located at first passage
On 18 extended line, which is equivalent to a branched bottom, and the big fluid (water) of inertia force can be used in formation fluid
Property effect is lower enters in first passage 18, spin chamber 15 is entered back into, and high speed rotation is carried out in spin chamber 15, according to dynamic
Law of conservation is measured, higher throttle resistance is generated through outflow port 16 again after spin chamber 15 is spun up, so inhibiting should
Produce the quantum of output of water in layer.
Meanwhile the fluid (oil) that viscous force is big understands some fluid and enters spin chamber 15 along second channel 19,
In, the fluid of spin chamber 15 is entered by second channel 19 and enters the fluid of spin chamber 15 in eddy flow through first passage 18
It collides and slows down in chamber 15, high speed rotation can not be formed, and then the throttle resistance generated is smaller, conducive to the output of crude oil.
By being equipped with first passage 18 and second channel 19, the draining machine structure 12 can be caused to adapt to the object of fluid automatically
Property, different resistance pressure drops is provided according to specific fluid flow and physical property, there is stronger applicability.So that this can be opened
It closes and adjusts flow control water installations 6 that can have the function of fluid identification, fluid conversion and fluid limitation, the switchable tune flow control water installations
6, based on the formation fluids design pre-estimated, can independently adjust the flowing of fluid according to fluid components and its property.
In the present embodiment, the second channel 19 can also be passed through approximately along with 15 direction tangential of spin chamber
In the spin chamber 15., more than this feature of the viscous force of water, to better discriminate between stratum preferably using the viscous force of oil
The channel that fluid water and oil are walked, the cross-sectional area of the first passage 18 are less than the cross-sectional area of the second channel 19,
In this way, the big segment fluid flow of viscous force (oil) is more biased towards in entrance second channel 19 in formation fluid, and in outflow outflow port
When 16 there is smaller throttle resistance, be more easy to targetedly discharge, promote oil production.It is considered that first passage 18 and second is logical
Road 19 is usually cylindrical channel, specifically, the diameter of first passage 18 can be less than the diameter of second channel 19.
In view of usually containing the gases such as natural gas in reservoir, gas inclusions enter draining machine structure 12 in formation fluid
In, formation fluid gas phase after first passage 18 enters in spin chamber 15 is difficult to be formed in spin chamber 15 compared with liquid
Eddy flow, and can directly be moved to outflow port 16, so as to interfere the eddy flow state of liquid, reduce the additional drag effect of draining machine structure 12
To avoid the interference of gas, rectifier structure is additionally provided in the spin chamber 15 for fruit；The rectifier structure includes going out to flow along described
The circumferential evenly arranged multiple cowling panels 17 of mouth 16.Under the action of the cowling panel 17, gas to outflow port 16 move when it is whole
Flowing plate 17 is blocked, and gas is inhibited to be moved to outflow port 16, so as to reduce influence of the gas to liquid cyclone.Specifically, such as Fig. 4 institutes
Show, cowling panel 17 can be arc panel.4 cowling panels 17 are uniformly distributed, and outflow port 16 is surrounded, phase along outflow port 16 is circumferential
Gap between adjacent 2 cowling panels 17 is passed into outflow port 16 for fluid.
In the present embodiment, as shown in Figure 3, Figure 4, the draining machine structure 12 is (along central tube for the structure of draining machine structure 12
14 radially) have mutually back to outer binding face 29 and interior binding face 34.The outflow port 16 is located on the interior binding face 34.Its
In, the interior binding face 34 is plane, is bonded with the outer wall with the central tube 14, and the outer binding face 29 is arc-shaped surface,
It is bonded with the inner wall with the outer tube 13.In the present embodiment, draining machine structure 12 can be that split constructs, for example pass through a square
Shape block and the cover with the arc-shaped surface radially cover conjunction formation.
Specifically, for convenience of the installation of draining machine structure 12, the outer wall of the central tube 14, which is equipped with, installs the draining machine
The holding tank of structure 12；The fluid through-hole 36 is set on the bottom wall of the holding tank.The interior binding face 34 and the receiving
The bottom wall fitting of slot, and the outflow port 16 aligns with the fluid through-hole 36 and connects；The flow inlet 20 is located at described
Outside holding tank.
In the present embodiment, it is contemplated that when moisture content significantly rises in the production fluid of the production layer, draining machine structure 12
It is that the oil-producing for influencing other production layers is avoided to work when can not recur to good control water effect, the switchable tune flow control water installations
6 are additionally provided with switch module.The switch module can into the central tube 14, trandfer fluid carries out to the fluid through-hole 36
Open and close control.In the initial state, switch module is in an open state, and is communicated inside fluid through-hole 36 and central tube 14 and can be in
14 delivered inside formation fluid of heart pipe.The switch module is closed when moisture content significantly rises in the production fluid of the production layer,
So as to stop the trandfer fluid into central tube 14 of fluid through-hole 36.The switch module can be arranged concentrically in central tube 14,
It can be simultaneously not especially limited with eccentric setting, the application.
In the present embodiment, to avoid the oil extraction between interference levels position, the switch module has layer position
Oil channel 27 and gang up oil channel 28.It is described that gang up oil channel 28 axial along the central tube 14 by the switch module
Perforation, can connect levels position in this way, this gangs up oil channel 28, and the on off state of switch module does not influence to produce up and down
The oil recovery of layer.Layer position oil channel 27 is connected with the fluid through-hole 36；The switch module can control the layer position
Oil channel 27 and the break-make inside the central tube 14.Switch module passes through in key-course position oil channel 27 and central tube 14
The break-make in portion, so as to control whether formation fluid is flowed into inside central tube 14.
Specifically, the switch module includes the control mechanism of check valve, switch valve and the control switch valve；Institute
It states check valve with layer position oil channel 27 to be connected, the check valve only allows from 27 fluid of layer position oil channel
To the switch valve flow；The switch valve can switch the outflow of fluid.It can be to avoid stream by being equipped with the check valve
Body is flow backwards, and avoids having an impact conveying of the fluid of other intervals in oil pipe 4.
In the present embodiment, the check valve includes 35 and first spool 21 of valve seat；The lower end of the valve seat 35 is
It is communicated inside sealed condition, layer position oil channel 27 and the valve seat 35.First spool 21 is located at the valve seat 35
Upper end the upper end of the valve seat 35 is blocked；First spool 21 can be by along the lower end of the valve seat 35 to the valve seat 35
Upper end active force open.
The switch module includes connecting the casing 32 of 35 upper end of valve seat and in the casing 32
Second spool 22；Second spool 22 can slide axially along the central tube 14；The wall of the casing 32 is equipped with institute
State the inside and outside discharge through-hole 33 connected of casing 32；Second spool 22 has block the discharge through-hole 33 first
Put and open the second position of the discharge through-hole 33.
As shown in Fig. 2, for ease of the installation of switch module, switch module has switch housing 31 and pedestal 30.Valve seat
35 are installed on pedestal 30, and switch housing 31 and pedestal 30 are threadingly attached in central tube 14.Valve seat 35 is installed on pedestal
It is blocked on 30 and by pedestal 30 by the lower end of valve seat 35.Layer position oil channel 27 is opened on pedestal 30, and will in wall thickness direction
Pedestal 30 penetrates through.Oil channel 28 is ganged up in an axial direction to penetrate through pedestal 30.Ring is formed between switch housing 31 and casing 32
Sky, the discharge through-hole 33 on casing 32 are communicated with the annular space, so as to being communicated inside central tube 14.
Wherein, the space moved for the first spool 21, the second spool 22 are formed between the outer shell and valve seat 35
In the top of the first spool 21 and its mobile space.First spool 21 can be valve ball, and connection first can be equipped in valve seat 35
The elastic component (such as cylindrical spring) of spool 21, the elastic component apply elastic force (preferably pulling force) so that the first spool 21 is located at
First position, when the outflow port 16 of draining machine structure 12 is after communicating passage conveying liquid in layer position enters in valve seat 35, in valve seat 35
The first spool of fluid contact 21 until the first spool 21 is lifted off a seat 35 openings.
In a preferred embodiment, switch module can control the fluid to lead to according to the Fluid pressure in central tube 14
Hole 36 (or layer position communicating passage) and the break-make inside the central tube 14.Specifically, the control mechanism includes pressure
Meter 26, processor 24, driving mechanism 23；The pressure gauge 26 is connected with the processor 24；The pressure gauge 26 is used to survey
Measure the Fluid pressure in the central tube 14；The processor 24 passes through described according to the Fluid pressure that the pressure gauge 26 measures
Driving mechanism 23 drives second spool 22 to act.In this way, the switch control to realize switch module, it can the water filling outside well
It suppresses so that the pressure in oil pipe 4 (central tube 14) reaches the Opening pressure of switch module or closes pressure, so as to fulfill control water
It is controlled outside the well of work.
As shown in Fig. 2, the switch module can also have power supply 25, the power supply 25 for the processor 24, pressure gauge 26,
Driving mechanism 23 supplies electric energy, specifically, the power supply 25 can be battery.Wherein, pressure gauge 26 is installed on the top of power supply 25,
Battery is installed on the top of processor 24, and processor 24 is installed on the top of driving mechanism 23.Driving mechanism 23 can be motor,
The motor can drive the second spool 22 to slide up and down by link mechanism.To have preferable service life, avoid fluid rotten
The outer surface (surface at least contacted with fluid) of erosion, the draining machine structure 12 and switch module is used with high abrasion-resistance
Metal material.
In conclusion this it is switchable tune flow control water installations 6 by being equipped with draining machine structure 12, switch module, can not only root
According to fluid flow automatically adjust caused by additional drag, reduce the influence of reservoir heterogeneity, balanced inflow profile, Er Qieneng
It is enough to realize that water filling opens or closes switch module by way of suppressing ground in fixed tubular column, it flexibly realizes different
Production layer opens or closes, and without rountrip or carries out tubing string operation, the switchable not only structure letter of tune flow control water installations 6
Single, manufacture is at low cost, and with extensively using value.
Referring to Fig. 5, another embodiment of the present invention also provides a kind of control water completion flow string, which adopts
Tubing string includes：Oil pipe 4 in energy tripping in casing 2；The upper end of the oil pipe 4 is equipped with hanging packer 1；The oil pipe 4 is in institute
The lower section for stating hanging packer 1 is equipped with multiple isolation packers 5；The isolation packer 5 is used for described sleeve pipe 2 and the oil
Oil jacket annular space sealed separation between pipe 4；As above the switchable tune flow control water installations 6 described in any embodiment；Per adjacent two
There are one the switchable tune flow control water installations 6 for series connection on oil pipe 4 between a isolation packer 5.
Wherein, hanging packer 1 can play the role of the entire completion flow string of suspension.Isolation packer 5 is by lower part
Casing 2 (machine pumping tubing string) and flow string (oil pipe 4) keep apart, and be separated to form multiple reservoirs segmentation (production layer).The control
Water completion flow string can in the casing 2 of completion in advance the tripping in control water completion flow string.And it is adopted in the control water completion
It is suppressed inside tubing string so that multi-stage isolation packer 5 is set, then passes through releasing tool Back-off Pipe String.The control water completion tubular column can
To have required out pit shaft according to later stage production and well workover.
The control water completion flow string is also provided with multiple centralizers 3, which can control this in casing 2
Water completion flow string righting is placed in the middle.Pit shaft is divided into several by the control water completion flow string by multiple isolation packers 5
Well section, so that reservoir is divided into multiple production layers, each layer that produces corresponds to a switchable tune flow control water installations 6, so as to fulfill dividing
Section control water and completion are gone into operation.
Herein cited any digital value all include between lower limiting value to upper limit value with the lower value of an incremented and
The all values of upper value, there are the intervals of at least two units between any lower value and any much higher value.For example, such as
Fruit elaborates that the quantity of component or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20
To 80, more preferably from 30 to 70, then purpose is arrived in order to illustrate also clearly listing such as 15 to 85,22 in the specification
68th, 43 to 51,30 to 32 is equivalent.For being less than 1 value, it is 0.0001,0.001,0.01,0.1 suitably to think a unit.
These are only intended to the example clearly expressed, it is believed that the numerical value enumerated between minimum and peak is possible to
Combination is all expressly set forth in the specification in a similar manner.
Unless otherwise indicated, all ranges all include all numbers between endpoint and endpoint.It is used together with range
" about " or " approximation " be suitable for two endpoints of the range.Thus, " about 20 to 30 " are intended to covering " about 20 to about
30 ", including at least the endpoint indicated.
All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot
Together in this.Identified element, ingredient, component or step and reality should be included by describing the term " substantially by ... form " of combination
Other elements, ingredient, component or the step of the basic novel feature of the combination are not influenced in matter.Using term "comprising" or
" comprising " describes the combination of element here, ingredient, component or step it is also contemplated that substantially by these elements, ingredient, component
Or the embodiment that step is formed.Here by using term " can with ", it is intended to it is described any to illustrate that " can with " includes
Attribute is all optional.
Multiple element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Optionally
Ground, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation.It is used for
The open "a" or "an" for describing element, ingredient, component or step is not said to exclude other elements, ingredient, component
Or step.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch
It states, many embodiments and many applications except the example provided all will be aobvious and easy for a person skilled in the art
See.Therefore, the range of this introduction should not be determined with reference to foregoing description, but should with reference to appended claims and this
The four corner of equivalent that a little claims are possessed determines.For comprehensive purpose, all articles and with reference to including special
The disclosure of profit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims
Any aspect is not intended to abandon the body matter, also should not be considered as inventor the theme is not thought of as it is disclosed
A part for subject matter.
Claims (15)
1. a kind of switchable tune flow control water installations, which is characterized in that including：
Outer tube；
The central tube being sheathed in the outer tube；The tube wall of the central tube, which is equipped with, is passed through its internal fluid through-hole；
The draining machine structure being set between the outer tube and the central tube；The draining machine structure have spin chamber, flow inlet,
Outflow port and first passage；The cross sectional shape vertical with central tube radial direction of the spin chamber is round and center
Line with it is radial parallel；The outflow port connects the spin chamber and the fluid through-hole；The outflow port is located at the eddy flow
On the center line of chamber；The first passage connects the flow inlet with the spin chamber；The length of the first passage
Direction is parallel with the axial direction of the central tube；The first passage is passed through in the spin chamber and causes the input vortex chamber
The fluid of room forms eddy flow；
The switch module being set in the central tube；The switch module can be to the fluid through-hole into the central tube
Control is opened and closed in trandfer fluid.
2. switchable tune flow control water installations as described in claim 1, it is characterised in that：The flow inlet is located at the draining machine
The upper end of structure and positioned at the first passage extended line on；The first passage edge is passed through with the spin chamber direction tangential
In the spin chamber.
3. switchable tune flow control water installations as claimed in claim 2, it is characterised in that：Connection is additionally provided on the draining machine structure
The second channel of the flow inlet and the spin chamber；The second channel is along linear extension；The second channel with it is described
Angle between first passage is acute angle.
4. switchable tune flow control water installations as claimed in claim 3, it is characterised in that：The cross-sectional area of the first passage is small
In the cross-sectional area of the second channel.
5. switchable tune flow control water installations as described in claim 1, it is characterised in that：Rectification is additionally provided in the spin chamber
Structure；The rectifier structure is included along the circumferentially evenly arranged multiple cowling panels of the outflow port.
6. switchable tune flow control water installations as described in claim 1, it is characterised in that：The draining machine structure have mutually back to
Outer binding face and interior binding face；The outflow port is located on the interior binding face；The outer binding face be arc-shaped surface, with institute
State the inner wall fitting of outer tube.
7. switchable tune flow control water installations as claimed in claim 6, it is characterised in that：The outer wall of the central tube is equipped with peace
Fill the holding tank of the draining machine structure；The fluid through-hole is set on the bottom wall of the holding tank；The interior binding face and institute
The bottom wall fitting of holding tank is stated, and the outflow port aligns with the fluid through-hole and connects；The flow inlet is located at described
Outside holding tank；The interior binding face is plane.
8. the switchable tune flow control water installations as described in claim 1-7 is any, it is characterised in that：The switch module has layer
Oil channel and is ganged up at oil channel in position；It is described gang up oil channel by the switch module along the central tube axially through；
Layer position oil channel is connected with the fluid through-hole；The switch module can control layer position oil channel with it is described
Break-make inside central tube.
9. switchable tune flow control water installations as claimed in claim 8, it is characterised in that：The switch module include check valve,
The control mechanism of switch valve and the control switch valve；The check valve is connected with layer position oil channel, the list
Only allow to come from the layer position oil channel fluid to valve to the switch valve flow；The switch valve can to the outflow of fluid into
Row switch.
10. switchable tune flow control water installations as claimed in claim 9, it is characterised in that：The check valve include valve seat and
First spool；The lower end of the valve seat is sealed condition, is communicated inside layer position oil channel and the valve seat；Described first
The upper end that spool is located at the valve seat blocks the upper end of the valve seat；First spool can by along the lower end of the valve seat extremely
The active force of the upper end of the valve seat is opened；
The switch module includes the casing for connecting the valve seat upper end and the second spool in the casing；
Second spool can slide axially along the central tube；The wall of the casing, which is equipped with, to be connected inside and outside the casing
Discharge through-hole；Second spool has the first position for blocking the discharge through-hole and opens the of the discharge through-hole
Two positions.
11. switchable tune flow control water installations as claimed in claim 10, it is characterised in that：The control mechanism includes pressure
Meter, processor, driving mechanism；The pressure gauge is connected with the processor；The pressure gauge is used to measure the central tube
Interior Fluid pressure；The processor drives described the according to the Fluid pressure of the manometry by the driving mechanism
Two spools act.
12. switchable tune flow control water installations as claimed in claim 11, it is characterised in that：The external outer tube of central tube
Top be also arranged with screen casing；The lower end of the screen casing connects the upper end of the outer tube.
13. the switchable tune flow control water installations as described in claim 9-12 is any, it is characterised in that：The outer wall of the central tube
It is equipped with multiple rectangular preiection structures；The length direction of the rectangular preiection structure is parallel with the axial direction of the central tube；It is multiple
Circumferential uniformly arrangement of the rectangular preiection structure along the central tube；Formation becomes a mandarin recessed between two neighboring rectangular preiection structure
Slot；The central tube is equipped with multiple unhurried current slots below the groove that becomes a mandarin；Width of the unhurried current slot along central tube circumferential direction
Degree is more than the width of the groove that becomes a mandarin, and multiple unhurried current slots with multiple grooves that become a mandarin along the center pipe axle to one
One alignment；The draining machine structure there are one being set in each unhurried current slot.
14. switchable tune flow control water installations as claimed in claim 13, it is characterised in that：The unhurried current slot enters described in
The end for flowing groove is equipped with multiple protruding blocks circumferentially arranged.
15. a kind of control water completion flow string, which is characterized in that including：
Oil pipe in energy tripping in casing；The upper end of the oil pipe is equipped with hanging packer；The oil pipe is in the hanging packer
Lower section be equipped with multiple isolation packers；The isolation packer is used for the oil jacket annular space between described sleeve pipe and the oil pipe
Sealed separation；
Switchable tune flow control water installations as described in claim 1-14 is any；Between per the two neighboring isolation packer
There are one the switchable tune flow control water installations for series connection on oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810015538.8A CN108240206A (en) | 2018-01-08 | 2018-01-08 | Switchable tune flow control water installations and its control water completion flow string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810015538.8A CN108240206A (en) | 2018-01-08 | 2018-01-08 | Switchable tune flow control water installations and its control water completion flow string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108240206A true CN108240206A (en) | 2018-07-03 |
Family
ID=62699523
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810015538.8A Pending CN108240206A (en) | 2018-01-08 | 2018-01-08 | Switchable tune flow control water installations and its control water completion flow string |
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| CN (1) | CN108240206A (en) |
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| CN111395997A (en) * | 2018-12-28 | 2020-07-10 | 中国石油化工股份有限公司 | Parameter design method for oil well self-adaptive flow control water device |
| CN111749674A (en) * | 2019-03-11 | 2020-10-09 | 中国石油天然气股份有限公司 | Method and test device for testing critical erosion flow of gas well on site |
| CN112343554A (en) * | 2020-11-16 | 2021-02-09 | 中国海洋石油集团有限公司 | Oil-stabilizing water control mechanism and water control device for light crude oil |
| CN113622868A (en) * | 2020-05-06 | 2021-11-09 | 中国石油化工股份有限公司 | Differential pressure type sliding sleeve with water control function |
| CN114320255A (en) * | 2022-02-07 | 2022-04-12 | 成都汉科石油技术有限公司 | Self-flowing water injection device and method for ultra-deep fracture-cavity reservoir oil well |
| CN114382442A (en) * | 2022-01-20 | 2022-04-22 | 西南石油大学 | Low-viscosity oil well water control and flow guide device |
| CN115199244A (en) * | 2022-07-18 | 2022-10-18 | 陈彦洪 | Self-adaptive flow control water device and using method thereof |
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