CN106593352A - Electrically-controlled sliding sleeve and fracturing string - Google Patents
Electrically-controlled sliding sleeve and fracturing string Download PDFInfo
- Publication number
- CN106593352A CN106593352A CN201611224433.0A CN201611224433A CN106593352A CN 106593352 A CN106593352 A CN 106593352A CN 201611224433 A CN201611224433 A CN 201611224433A CN 106593352 A CN106593352 A CN 106593352A
- Authority
- CN
- China
- Prior art keywords
- automatically controlled
- sliding sleeve
- trigger
- pusher dog
- sensing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
Abstract
The invention discloses an electrically-controlled sliding sleeve and a fracturing string; the electrically-controlled sliding sleeve comprises: a sliding sleeve body comprising a sliding sleeve shell extended vertically and a sliding core positioned in the shell, wherein the sliding sleeve shell is provided with a liquid outgoing through hole communicated with the outside, the sliding core plugs the liquid outgoing through hole, and the sliding core slides along the length of the shell to open the liquid outgoing through hole; a sensing device that may be arranged above the sliding sleeve body and that generates a magnetic field; an electrically-controlled rod that may pass through the sensing device and that has a sensing mechanism, an actuating mechanism, and a control mechanism, wherein the control mechanism is connected to the sensing mechanism and the actuating mechanism, the control mechanism may control the actuating mechanism to execute expanding action when the sensing mechanism senses the magnetic field, the electrically-controlled rod may pass through the sliding core when the actuating mechanism does not execute the expanding action, and the electrically-controlled rod may drive the sliding core to move after the activating mechanism executes the expanding action.
Description
Technical field
The present invention relates to oil, natural gas extraction technical field, more particularly to a kind of automatically controlled sliding sleeve and fracturing string.
Background technology
Horizontal well can improve the Drilling ratio of reservoir, and same well can connect several thin reservoirs, be the unconventional oil of exploitation
The revolutionary technological means of gas resource.But the formation rock permeability residing for some oil-gas reservoirs is very low, and Oil/gas Well must enter water-filling
Force to split etc. after well stimulation is processed and can be only achieved economic production levels.With the development of drilling technology, the horizontal segment of horizontal well
Length is continuously increased, and the reservoir number that same Horizontal Well Drilling is met is continuously increased, and pressing crack construction interval to be dealt with is also more next
More, this puts forward higher requirement to hydraulic fracturing process.
Traditional horizontal well hydraulic fracturing method can substantially be divided into limited entry fracture treatment and staged fracturing.Current limliting method is mainly applied
Bury it is shallow, using the close reservoir of well-case perforating completion and each section of fracture pressure.When horizontal well need transformation hop count compared with
It is many, it is impossible to when realizing once transforming all intervals using limited entry fracture treatment, it is necessary to adopt staged fracturing technique, wherein, level
Well packer+sand blower of sliding sleeve (hereinafter referred to as sliding sleeve) staged fracturing is a kind of suitable Low Permeability Oil/gas well development, in sleeve pipe
Interior fixed tubular column disposably completes the machinery staged fracturing technology of multistage fixed point transformation, and downhole tool is few, and operation is simple, makees
Industry efficiency high, process pipe string dependable performance；Can meet simultaneously it is shallow, in, the requirement of deep water horizontal well staged fracturing；Process pipe string and
Packer can simultaneously meet the cracky transformation of short perforation, long perforating well section and require not by card away from being limited.In recent years, in the industry
Well-known companies are proposed the product based on this kind of technology, such as the Stage-FRAC fractured horizontal well technologies of Schlumberger,
Horizontal well bore hole frac system of Bake Hughes etc..
In the downhole tool of packer+sliding sleeve staged fracturing of horizontal well technology, sliding sleeve is one of part of core, sliding sleeve
Opening ways the structure of shaft structure and ground installation, the time of pressing crack construction and cost will be had a huge impact.
Fracturing sliding bush opening ways have various, common are pitching unlatching, by well head pitching, treat that it falls sliding sleeve position
Afterwards, pressurize to oil pipe, hydraulic drive pressure break ball open sliding sleeve.The operation of pitching is simple, opens reliable, but the cunning on fracturing string
Direction of the set latus rectum along butt to toe-end is gradually reduced, and in huge discharge pressing crack construction, the sliding sleeve of toe-end can be produced to fracturing fluid
The significant throttling action of life so that ground fracturing equipment working condition deteriorates, so the series of staged fracturing is limited.
In order to overcome this problem, occur in that there is the sliding sleeve of flexible ball seat inside, the ball seat in such sliding sleeve is often done
Into split-type or open type, the latus rectum of point lobe ball seat is bigger than the diameter of pressure break ball, makes by fluid force compresses flexibility ball seat
Become complete ball seat, and open sliding sleeve.The shortcoming of this instrument is that structure is more complicated, and hydraulic feedback pipeline is exposed to pit shaft
In, subject to damage.
With the development of technology, new automatically controlled sliding sleeve is occurred in that, this sliding sleeve main function components are electronic controllers
And electric operator, the action command of sliding sleeve is encapsulated in the electronic tag of volume very little, in fracturing process, is delivered from well head
To in well.This sliding sleeve automaticity rises significantly than traditional mechanical sliding sleeve high degree of automation, flexible operation degree, is
The trend of following hydraulic fracturing sliding sleeve development.Due to the initial stage in development, the volume of existing automatically controlled sliding sleeve underground tool string
Huge, the electronic devices and components and power supply equitemperature sensitivity of down-hole work long hours in hot environment, and reliability is not high, and electronics
Label is captured as power and needs to be met further improvement.
The content of the invention
In view of the deficiencies in the prior art, it is an object of the invention to provide a kind of automatically controlled sliding sleeve and fracturing string, with can be extremely
One of above technical problem is solved less.
To reach above-mentioned purpose, the present invention adopts following scheme：
A kind of automatically controlled sliding sleeve, including：
Sliding sleeve body, it includes the sliding sleeve housing and the slide core in the housing of lengthwise extension；The sliding sleeve shell
Offer on body communicate with outside go out fluid through-hole；The slide core by it is described go out fluid through-hole closure, the slide core is along the housing
Length direction slide with open it is described go out fluid through-hole；
The sensing device that can be located above the sliding sleeve body, it is formed with magnetic field；
The automatically controlled rod of the sensing device can be passed through, it has induction mechanism, actuating mechanism and controlling organization；It is described
Controlling organization is connected with the induction mechanism, the actuating mechanism；The controlling organization can be sensed in the induction mechanism
During the magnetic field, control the actuating mechanism and perform expanding action；The automatically controlled rod is not carried out expanding dynamic in the actuating mechanism
The slide core, the automatically controlled rod can be passed through when making after the actuating mechanism performs expanding action the slide core to be driven to move.
As one kind preferred embodiment, the automatically controlled rod includes tailstock, automatically controlled storehouse and bulb；The tailstock, electricity
Control storehouse and bulb are sequentially connected along the length direction of the automatically controlled rod；The automatically controlled rod is located at when the bulb is in lower going-into-well
Bottom.
As it is a kind of preferred embodiment, the induction mechanism includes being located at the sensing magnetic pole of the bulb and suddenly
That sensor；The quantity of the sensing magnetic pole is multiple, and circumferentially around Hall element distribution；The hall sensing
Device is connected with the controlling organization.
As one kind preferred embodiment, the bulb is provided with two placement through holes for radially being run through；Two
The placement through hole is arranged up and down and orthogonal；The sensing magnetic pole is two pairs, and it is logical to be respectively arranged at two placements
In hole；The Hall element is located at described in each pair and senses between magnetic pole.
As one kind preferred embodiment, it is provided with sealing ring between the sensing magnetic pole and the inwall of the placement through hole
And backup ring.
As one kind preferred embodiment, the bulb has semiglobe.
As one kind preferred embodiment, the bulb is made up with the automatically controlled storehouse of permeability magnetic material.
As one kind preferred embodiment, it is additionally provided with power supply in the automatically controlled storehouse；The power supply and the controlling organization
It is connected, the controlling organization can control the power supply and power to the actuating mechanism, so as to control action mechanism.
As one kind preferred embodiment, the upper end in the automatically controlled storehouse is threadedly coupled with the lower end of the tailstock, described
The lower end in automatically controlled storehouse is connected with the threaded upper ends of the bulb；The upper end of the bulb is provided with the groove for extending downwardly, described recessed
Groove through hole of placing described with two is communicated；The controlling organization is the electric machine controller being arranged in the automatically controlled storehouse.
As one kind preferred embodiment, the actuating mechanism includes electrically-controlled component, trigger component and expansion group
Part；
The electrically-controlled component is connected with the controlling organization, and the controlling organization can control the electrically-controlled component by first
Position moves to the second place；When the electrically-controlled component is located at first position, the trigger component tightens up the Stent assembly,
So that internal diameter of the external diameter of the automatically controlled rod less than the slide core；When the electrically-controlled component is located at the second place, the trigger group
Part radially expands the Stent assembly, so that internal diameter of the external diameter of the automatically controlled rod more than the slide core.
As it is a kind of preferred embodiment, it is recessed that the side wall of the tailstock is provided with multiple radially inwardly extending pusher dogs
Groove；
The Stent assembly include the pusher dog in the pusher dog groove and positioned at described pusher dog one end with described group
Pusher dog spring between pawl bottom portion of groove；The other end of the pusher dog is connected with tail plate by pin；The empennage plate part
Cover on the opening of the pusher dog groove；
When the electrically-controlled component is located at first position, the trigger component makes the pusher dog spring maintain compressive state；Institute
State electrically-controlled component positioned at the second place when, the trigger component discharges the pusher dog spring, so that the pusher dog spring top supports institute
State pusher dog and stretch out the pusher dog groove, so that the automatically controlled rod is expanding.
As one kind preferred embodiment, the upper end in the automatically controlled storehouse is provided with placement groove and places recessed positioned at described
Axially extending bore below groove；The electrically-controlled component is located at the lower section of the trigger component；
The electrically-controlled component includes switch magnetic pole, switching magnet and motor；The motor is located in the axially extending bore
And be connected with the controlling organization, the upper end of the output shaft of the motor connects the switching magnet；The switch magnetic pole cover
On the switching magnet；Magnetic isolation unit is provided with the switch magnetic pole；The switching magnet can be in the drive of the motor
Under the second place is moved to by first position；The switching magnet switchs magnetic pole at the first position and pulls to described described in Jing
Thermomechanical components apply magnetic attraction；The switching magnet is prevented to be applied to the trigger component in the second place by the magnetic isolation unit
Plus magnetic attraction.
As one kind preferred embodiment, it is additionally provided with spring of blocking and block in the placement groove；The switch
The end of magnet is provided with the sphere with the cooperation of blocking；Described blocking is opened under the contact effect of the spring of blocking with described
The sphere for closing magnet is engaged, and the switching magnet is positioned at into the first position.
As one kind preferred embodiment, the tailstock is provided with centre bore；The upper end cover of the tailstock is located at bonnet；
The trigger component includes trigger, trigger plates, trigger spring and finger；Open with described the lower end of the trigger
Magnetic attraction adhesive of the magnetic pole by the switching magnet is closed, the upper end of the trigger is through the centre bore and the trigger plates phase
Connection；The finger is arranged on the lower surface of the trigger plates, and inserts in the pusher dog or the pusher dog spring, makes described dialling
Latch spring maintains compressive state.
As one kind preferred embodiment, the sliding sleeve inside the shell is additionally provided with the split ring below the slide core
Seat；It is described opening ring seat shrink when the slide core is moved down and with the bulb fitted seal.
As one kind preferred embodiment, the sliding sleeve shell includes upper sliding sleeve housing and downslide set of shells；It is described
Go out fluid through-hole to be arranged on the upper sliding sleeve housing；The slide core is connected with the upper sliding sleeve housing by the first slide core shear pin
Connect；Interstage sleeve is provided with below the split ring, shown interstage sleeve is connected by the second slide core shear pin with the downslide set of shells；Institute
It is spacing to the opening ring seat when inwall for stating downslide set of shells is provided with limited step to contact with the interstage sleeve.
As one kind preferred embodiment, the outer wall of the slide core is provided with and be spaced along its length predeterminable range
First sealing ring and the second sealing ring；The predeterminable range more than it is described go out fluid through-hole along the sliding sleeve outer cover length direction length
Degree.
As one kind preferred embodiment, the sensing device includes upper sensing housing and lower sensing housing；It is described
Stretch into the upper sensing housing and be threadedly coupled in the upper end of lower sensing housing；The inwall of the upper sensing housing is provided with mounting table
Rank；Magnet assemblies are placed between the upper end for placing step and the lower sensing housing；The magnet assemblies can be formed
Magnetic field.
As one kind preferred embodiment, the magnet assemblies include arc-shaped magnet and magnet retainer；The arc
The quantity of shape magnet is multiple, and is uniformly distributed circumferentially on the magnet retainer.
A kind of fracturing string using automatically controlled sliding sleeve as above described in any embodiment, the fracturing string includes：It is many
The pressure break pipeline section of individual series connection；
The pressure break pipeline section is that the sensing device of packer and the automatically controlled sliding sleeve, sliding sleeve body sequential concatenation are formed.
As one kind preferred embodiment, the internal diameter of all described automatically controlled sliding sleeve in the fracturing string is equal.
As one kind preferred embodiment, the controlling organization is counted when sensing mechanism senses the magnetic field
Number, and the expanding action of the actuating mechanism execution is controlled when institute's count value reaches predetermined value.
By above technical scheme the automatically controlled sliding sleeve of the present invention is can be seen that by the way that controlling organization is arranged at into automatically controlled rod
In, and the magnetic field of the inductive sensory appts of induction mechanism so that controlling organization control action mechanism carries out action, so as to drive
The slide core movement of sliding sleeve body is opened, it is seen then that the electronic devices and components such as controlling organization of present embodiment are respectively positioned on automatically controlled rod
On, so as to needing open sliding sleeve to enter automatically controlled rod at present, and then can be prevented effectively from because electronic devices and components are located at for a long time well
Produced Problem of Failure in lower hot environment, improves the stability of device.
In addition, the trigger condition of the automatically controlled sliding sleeve of present embodiment is triggered by way of magnetic induction, relative to existing
There is the electronic tag capture technique of technology, success rate is high, and reliability can further be improved.
With reference to explanation hereinafter and accompanying drawing, only certain exemplary embodiments of this invention is disclose in detail, specify the original of the present invention
Reason can be in adopted mode.It should be understood that embodiments of the present invention are not so limited in scope.In appended power
In the range of the spirit and terms that profit is required, embodiments of the present invention include many changes, modifications and equivalent.
The feature for describing for a kind of embodiment and/or illustrating can be in same or similar mode one or more
It is combined with the feature in other embodiment used in individual other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when using herein, but and
It is not excluded for the presence of one or more further features, one integral piece, step or component or additional.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those skilled in the art, without having to pay creative labor, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the fracturing string schematic diagram that one embodiment of the present invention is provided；
Fig. 2 is the sliding sleeve body construction schematic diagram in Fig. 1；
Fig. 3 is the sliding sleeve body schematic diagram that automatically controlled rod is reached in Fig. 2；
Fig. 4 is that the bulb of automatically controlled bat enters opening ring seat schematic diagram；
Fig. 5 is the opening schematic diagram of the sliding sleeve body in Fig. 2；
Fig. 6 is the automatically controlled rod structural representation in Fig. 1；
Fig. 7 is the A-A cross-sectional views in Fig. 6；
Fig. 8 is the B-B cross-sectional views in Fig. 6；
Fig. 9 is the sensing device structural representation in Fig. 1；
Figure 10 is the C-C cross-sectional views in Fig. 9；
Figure 11 is automatically controlled rod and sensing device interaction diagram.
Specific embodiment
In order that those skilled in the art more fully understand the technical scheme in the present invention, below in conjunction with of the invention real
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described enforcement
Example is only a part of embodiment of the invention, rather than the embodiment of whole.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained on the premise of creative work is not made, should all belong to guarantor of the present invention
The scope of shield.
It should be noted that when element is referred to as " being arranged at " another element, it can directly on another element
Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " 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 technology used herein and scientific terminology and the technical field for belonging to the present invention
The implication that technical staff is generally understood that is identical.The term for being 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 of the invention in limiting.Term as used herein "and/or" includes one or more
The arbitrary and all of combination of related Listed Items.
Fig. 1 to Figure 11 is referred to, a kind of automatically controlled sliding sleeve provided for one embodiment of the present invention and fracturing string are tied
Structure schematic diagram.In the present embodiment, the automatically controlled sliding sleeve includes：Sliding sleeve body 4, it include lengthwise extend sliding sleeve housing,
And the slide core 7 in the housing；Offer on the sliding sleeve housing communicate with outside go out fluid through-hole；The slide core 7
By it is described go out fluid through-hole closure, the slide core 7 slide along the length direction of the housing with open it is described go out fluid through-hole；Can be located at
The sensing device 3 of the top of the sliding sleeve body 4, it is formed with magnetic field；The automatically controlled rod 1 of the sensing device 3 can be passed through, it has
Induction mechanism, actuating mechanism and controlling organization 27；The controlling organization 27 and the induction mechanism, the actuating mechanism phase
Connection；The controlling organization 27 can control the actuating mechanism execution expanding when the induction mechanism senses the magnetic field
Action；The automatically controlled rod 1 can pass through the slide core 7 when the actuating mechanism is not carried out expanding action, and the automatically controlled rod 1 is in institute
Stating after the expanding action of actuating mechanism execution the slide core 7 can be driven to move.
By above technical scheme the automatically controlled sliding sleeve of present embodiment is can be seen that by the way that controlling organization 27 is arranged at into electricity
In control rod 1, and the magnetic field of the inductive sensory appts 3 of induction mechanism so that the control action mechanism of controlling organization 27 carries out action,
Opened so as to the slide core 7 for driving sliding sleeve body 4 is moved, it is seen then that the grade electronic devices and components of controlling organization 27 of present embodiment
It is respectively positioned on automatically controlled rod 1, so as to needing open sliding sleeve to enter automatically controlled rod 1 at present, and then can be prevented effectively from because of electronics unit
Long term device is located at produced Problem of Failure in the hot environment of down-hole, improves the stability of device.
In addition, the trigger condition of the automatically controlled sliding sleeve of present embodiment is triggered by way of magnetic induction, relative to existing
There is the electronic tag capture technique of technology, success rate is high, and reliability can further be improved.
In the present embodiment, automatically controlled sliding sleeve is divided into 3 function subassemblies separate in structure, according to its position
This 3 function subassemblies can be divided into underground part and well-surface part by difference, and underground part includes sliding sleeve body 4 and sensing dress
3 are put, well-surface part is automatically controlled rod 1.Wherein, automatically controlled rod 1 can be put in pit shaft from well head ball injector, in vertical well section, electricity
Control rod can be moved downward by gravity, in net horizontal section, with a fixed displacement automatically controlled rod 1 must be promoted to travel forward.
Specifically, in the present embodiment, the automatically controlled rod 1 can include tailstock 23, automatically controlled storehouse 26 and bulb 31；Institute
The length direction that tailstock 23, automatically controlled storehouse 26 and bulb 31 are stated along the automatically controlled rod 1 is sequentially connected；The bulb 31 is in lower going-into-well
Positioned at the bottom of the automatically controlled rod 1 when middle.Wherein, the bulb 31 has semiglobe.Therefore from appearance, automatically controlled rod 1
One end is hemispheric cylindrical rod.
The induction mechanism can include that the sensing magnetic pole 32 and Hall element that are located at the bulb 31 (do not show
Go out)；The quantity of the sensing magnetic pole 32 is multiple, and circumferentially around Hall element distribution；The Hall element
It is connected with the controlling organization 27.
The bulb 31 is provided with two placement through holes (sign) for radially being run through；On two placement through holes
It is lower to arrange and orthogonal；The sensing magnetic pole 32 is two pairs, and is respectively arranged in two placement through holes；The Hall
Sensor is located at described in each pair and senses between magnetic pole 32.It is provided with close between the sensing magnetic pole 32 and the inwall for placing through hole
Seal 30 and backup ring 29.
Specifically as shown in fig. 6, two pairs of sensing magnetic poles 32 are inserted in bulb 31, axis or length direction difference are orthogonal.Ball
31 are sealed respectively with the contact surface of sensing magnetic pole 32 with sealing ring 33 and backup ring 34, between bulb 31 and automatically controlled storehouse 26
Axially facing surface sealing ring 30 and backup ring 29 seal.Gap is left between each pair sensing magnetic pole 32.Two pairs of sensings
Accommodate Hall element in the annular space that magnetic pole 32 is combined into not represent in figure.
The bulb 31 is made up with the automatically controlled storehouse 26 of permeability magnetic material.Power supply 28 is additionally provided with the automatically controlled storehouse 26；Institute
State power supply 28 to be connected with the controlling organization 27, the controlling organization 27 can control the power supply 28 and supply to the actuating mechanism
Electricity, so as to control action mechanism.
The upper end in the automatically controlled storehouse 26 is threadedly coupled with the lower end of the tailstock 23, the lower end in the automatically controlled storehouse 26 with it is described
The threaded upper ends connection of bulb 31.Specifically, sealing ring 25 and the sealing of the axially facing surface between automatically controlled storehouse 26 and tailstock 23
Circle back-up ring 24 is sealed.
The upper end of the bulb 31 is provided with the groove for extending downwardly, and groove through hole of placing described with two is communicated.Suddenly
You pass through the groove by sensor with the connecting line of controlling organization 27, wherein, the two ends of the connecting line of Hall element are solderable to be connected to
On the circuit board that controlling organization 27 is formed.Specifically, the controlling organization 27 is the motor control being arranged in the automatically controlled storehouse
Device processed.Specifically, controlling organization 27 can have signal picker, electronic counter and motor driver.
Now, automatically controlled rod 1 can find purpose sliding sleeve body by way of counting, and automatically controlled rod 1 is often through a sensing
Device 3, Hall element is just subject to once to trigger so as to produce a pulse signal, and electronic counter counts total signal number
Mesh, when signal is total equal with default value, you can judge that automatically controlled rod reaches target body.Reach target sliding sleeve body
Afterwards, the actuating mechanism in automatically controlled rod 1 is responded rapidly to, and one group of pusher dog 18 is stretched out from automatically controlled rod 1, is opened under the thrust of fluid
Sliding sleeve is opened, follow-up pressing crack construction is continued to complete.After the completion for the treatment of all pressing crack constructions all, fracturing string is taken out, change production pipe
Post.
In the present embodiment, the actuating mechanism includes electrically-controlled component, trigger component and Stent assembly.The electricity
Control component is connected with the controlling organization 27, and the controlling organization 27 can control the electrically-controlled component and be moved to by first position
The second place；When the electrically-controlled component is located at first position, the trigger component tightens up the Stent assembly, so that the electricity
Internal diameter of the external diameter of control rod less than the slide core；When the electrically-controlled component is located at the second place, the trigger component makes the expansion
Open component to radially expand, so that internal diameter of the external diameter of the automatically controlled rod 1 more than the slide core 7.
Specifically, the side wall of the tailstock 23 is provided with multiple radially inwardly extending pusher dog grooves (sign)；Institute
Stating Stent assembly includes the pusher dog 18 being located in the pusher dog groove and positioned at the one end of the pusher dog 18 and the pusher dog groove
Pusher dog spring 17 between bottom；The other end of the pusher dog 18 is connected with tail plate 15 by (empennage) pin 16；The tail
The part of wing plate 15 is covered on the opening of the pusher dog groove.Wherein, the function of tail plate 15 is auxiliary electric control rod 1 by adjacent
Space on two oil connections.
When the electrically-controlled component is located at first position, the trigger component makes the pusher dog spring 17 maintain compressive state；
When the electrically-controlled component is located at the second place, the trigger component discharges the pusher dog spring 17, so that the pusher dog spring 17
Pusher dog 18 described in contact stretches out the pusher dog groove, so that the automatically controlled rod 1 is expanding.
The upper end in the automatically controlled storehouse 16 is provided with places groove (sign) and the axial direction below the placement groove
Through hole (is not indicated).The electrically-controlled component is located at the lower section of the trigger component.The electrically-controlled component includes switch magnetic pole 19, opens
Close magnet 40 and motor 35；The motor 35 is located in the axially extending bore and is connected with the controlling organization 27, described
The upper end of the output shaft of motor 35 connects the switching magnet 40.
As shown in Fig. 6, Fig. 8, there is an axially extending bore upper end of automatically controlled storehouse 26, the upper surface of the motor of miniature DC geared motor 35 with
The inner face contact in automatically controlled storehouse 26, and fixed by screw axial.Automatically controlled storehouse can be provided with deep groove ball bearing 36, minisize dc
The output shaft of reducing motor 35 is provided with switching magnet 40 through the endoporus of deep groove ball bearing 36 on axle, the lower surface of magnet with
Separated with axle sleeve 37 between bearing.Dead eye is provided with the endoporus of switch magnetic pole 19, deep groove ball bearing, switching magnet 40 are installed
Upper surface separate with this bearing, miniature DC geared motor 35 output shaft end be suspended in dead eye.
The switch magnetic pole 19 is covered on the switching magnet 40；Magnetic isolation unit 22 is provided with the switch magnetic pole 19；
The switching magnet 40 can move to the second place under the drive of the motor by first position；The switching magnet 40 is in institute
Magnetic pole 19 is switched when stating first position described in Jing and applies magnetic attraction to the trigger component；The switching magnet 40 is described second
Prevented to trigger component applying magnetic attraction by the magnetic isolation unit 22 during position.Wherein, tailstock 23 and the axle for switching magnetic pole 19
Seal to contact surface magnetic pole sealing ring 20, while strengthening the voltage endurance capability of sealing ring with back-up ring 21.
In the present embodiment, it is a weldment to switch magnetic pole 19, and the lobe of left and right two is the high Pure iron of permeability, folder
Layer forms magnetic isolation unit 22 with non-magnet material, and the technique welded by face is welded into an entirety.
Block 39 and spring 38 of blocking are additionally provided with the placement groove；The end of the switching magnet 40 is provided with and institute
State the sphere (sign) of 39 cooperations of blocking.It is described block 39 the spring 38 of blocking contact effect under with the switch magnetic
The sphere of iron 40 is engaged, and the switching magnet 40 is positioned at into the first position.
As shown in Figure 6, Figure 7, the tailstock 23 is provided with centre bore (sign).The upper end cover of the tailstock 23 is located at bonnet
14.The trigger component includes trigger 41, trigger plates 44, trigger spring 42 and finger 43.The lower end of the trigger 41 and institute
Magnetic attraction adhesive of the switch magnetic pole 19 by the switching magnet 40 is stated, the upper end of the trigger 41 is through the centre bore and institute
State trigger plates 44 to be connected.The finger 43 is arranged on the lower surface of the trigger plates 44, and inserts the pusher dog 18 or described
In pusher dog spring 17, the pusher dog spring 17 is set to maintain compressive state.
Specifically, trigger 41 is also Pure iron.When Fig. 6 shows position, switching magnet 40, the left and right two of switch magnetic pole 19
Lobe and trigger 41 constitute closed-loop path, and the magnetic induction intensity by trigger 41 is larger, and trigger 41 is subject to stronger magnetic force.Switch magnetic
After iron 40 turns over 90 °, switching magnet 40 directly forms closed magnetic circuit with the lobe of left and right two of switch magnetic pole 19, by the magnetic of trigger 41
Induction is relatively low, and magnetic pole 19 disappears to the magnetic force of trigger 41.
As shown in fig. 6, the upper end that magnetic attraction, trigger 41 is relied between the lower end of trigger 41 and switch magnetic pole 19 passes through tail
Centre bore and the trigger plates 44 of seat 23 are with being threadedly coupled.Finger 43 is installed in trigger plates 44.The upper end of trigger spring 42 is subject to
Trigger plates are spacing, and lower end is subject to counterbore bottom hole spacing.
As shown in fig. 7, pusher dog 18 is in the pusher dog groove of tailstock 23, finger 43 carries out spacing, pusher dog bullet to pusher dog 18
Spring 17 is in compressive state in the pusher dog recess hole of pusher dog 18.Tail plate 15 can be fixed on pusher dog 18 by empennage pin 16
On.The mode connects for screw of bonnet 14 is on tailstock 23.Automatically controlled storehouse 26 is completely isolated with wellbore environment, and all contact surfaces all use sealing ring
Sealed.
When automatically controlled rod 1 reaches purpose sliding sleeve body 4, miniature DC geared motor 35 is powered and rotates, and drives switching magnet
40 turn over certain angle, switch magnetic pole 19 and the magnetic force of trigger 41 is disappeared, and trigger 41 and trigger plates 44 are in trigger spring 42
Move upwards under promotion, finger 43 is extracted out from the spacing hole or pusher dog spring 17 of pusher dog 18, and pusher dog 18 is in pusher dog spring 17
Eject from tailstock 23 under elastic force effect.After ejecting from pusher dog groove, pusher dog 18 can be with the phase of slide core 7 in sliding sleeve body 4
Interaction.
The sliding sleeve inside the shell is additionally provided with the opening ring seat 9 positioned at the lower section of the slide core 7；The opening ring seat 9 is described
When slide core 7 is moved down shrink and with the bulb fitted seal.The outer wall of the slide core 7 is provided with and be spaced along its length default
First sealing ring 6 and the second sealing ring 6 of distance；The predeterminable range more than it is described go out fluid through-hole along the sliding sleeve outer cover length
The length in direction.
The sliding sleeve shell includes upper sliding sleeve housing 5 and downslide set of shells 13；It is described go out fluid through-hole be arranged on described
On sliding sleeve housing 5；The slide core 7 is connected with the upper sliding sleeve housing 5 by the first slide core shear pin 8.The opening ring seat 9
Lower section is provided with interstage sleeve 10, and shown interstage sleeve 10 is connected by the second slide core shear pin 12 with the downslide set of shells 13.The downslide
It is spacing to the opening ring seat 9 when the inwall of set of shells 13 is provided with limited step (sign) to contact with the interstage sleeve.
Specifically, as shown in Fig. 2 sliding sleeve body upper sliding sleeve housing 5, downslide set of shells, 13 upper and lower ends are respectively outer spiral shells
Line, is oil pipe round thread.Slide core 7 is co-axially mounted with the centre bore of sliding sleeve shell, the contact surface sealing ring 6 with sliding sleeve shell
Sealing.There is an inner conical surface in the lower end endoporus of slide core 7, contact with the male cone (strobilus masculinus) of opening ring seat 9.Interstage sleeve 10 and downslide set of shells 13
It is co-axially mounted, its upper surface contacts with the lower surface of opening ring seat 9.When initial, the axial location of slide core 7 and interstage sleeve 10 is used respectively
First slide core shear pin 8, the second slide core shear pin 12 determine.
When initial, sliding sleeve body 4 is in normally off, goes out fluid through-hole (fracturing fluid outlet) and is sealed by slide core 7, and be open ring seat
9 is a flexible element, and lower end has interstage sleeve 10 spacing, and upper end can be sent out in the inner conical surface of slide core 7 under the axial compression of slide core 7
Raw radial deformation.More than the external diameter of automatically controlled rod 1, then, automatically controlled rod 1 can be worn the latus rectum of sliding sleeve body 4 under the promotion of fracturing fluid
Cross non-targeted sliding sleeve body.
When the counter in automatically controlled storehouse 26 reaches setting value, the motor action of automatically controlled rod 1, by stretching out pusher dog from vivo
And the thrust by fluid opens target sliding sleeve body 4.As shown in figure 3, when automatically controlled rod 1 is reached in target body 4, in automatically controlled rod
Pusher dog 18 stretch out.
In the diagram, automatically controlled rod 1 promotes slide core 7 to move, and interrupts the first slide core shear pin 8, the inner conical surface compression opening of slide core 7
Ring seat 9 so as to constantly deform, until opening ring seat 9 is in the cylinder inside slide core 7, now, the opening of the ring seat that is open
Part closes completely, forms a complete ball seat.The bulb of automatically controlled rod 1 enters ball seat sealing, blocks fracturing fluid flow further downstream
Passage.
As shown in figure 5, continuing toward pressure break oil pipe to suppress, overpressure is raised rapidly, until the second slide core shear pin 12 is beaten
Disconnected, automatically controlled rod 1 drives slide core 7, opening ring seat 9 and interstage sleeve 10 to move, finally spacing by the shoulder limited step in sliding sleeve body,
Go out fluid through-hole release on sliding sleeve body 4.Then, sliding sleeve body 4 is opened, while the bulb of automatically controlled rod 1 and opening ring seat coordinate,
Fractured interval is blocked.
In the present embodiment, the sensing device 3 can include upper sensing housing 46 and lower sensing housing 51.Institute
State it is lower sensing housing 51 upper end stretch into it is described it is upper sensing housing 46 be threadedly coupled.The inwall of the upper sensing housing 46 sets
There is placement step (sign)；Magnet assemblies are placed between the upper end for placing step and the lower sensing housing 51；Institute
Stating magnet assemblies can form magnetic field.Specifically, the magnet assemblies can include arc-shaped magnet 48 and magnet retainer 47；
The quantity of the arc-shaped magnet 48 is multiple, and is uniformly distributed circumferentially on the magnet retainer 47.
As shown in figure 9, being connected by regular screw threads between upper sensing housing 46 and lower sensing housing 51, cylindrical contact face is used
Sealing ring and back-up ring 49,50 are sealed, and the screw thread on upper-lower casing is oil pipe round thread, is connected with oil pipe by box cupling.
As shown in Figure 10, arc-shaped magnet 48 can be circumferentially fixed in upper shell 46 by magnet retainer 47, lower sensing shell
Body 51 is spacing to magnet axis.Arc-shaped magnet 48 radially magnetizes, and bulb 31 and automatically controlled storehouse 26 are all made with permeability magnetic material.Two
To sensing magnetic pole 32 in 90 ° of distributions, make magnetic field-enhanced in the annular space being combined into.
As shown in figure 11, when automatically controlled rod 1 passes through 3 endoporus of sensing device, the change of magnetic field strength in annular space, Hall
Sensor is acted on, and signal is detected by the control circuit in automatically controlled storehouse, you can judge that automatically controlled rod 1 has passed through a sensing device 3.
As shown in figure 1, also providing a kind of using described in as above any embodiment in another embodiment of the present invention
The fracturing string of automatically controlled sliding sleeve.In the present embodiment, the fracturing string includes：The pressure break pipeline section of multiple series connection；The pressure
Split pipeline section and formed for the sensing device 3 of packer 2 and the automatically controlled sliding sleeve, the sequential concatenation of sliding sleeve body 4.Wherein, the pressure break
The internal diameter of all described automatically controlled sliding sleeve in tubing string is equal.
In the present embodiment, controlling organization 27 can be counted when sensing mechanism senses the magnetic field, and
Institute's count value controls the actuating mechanism and performs expanding action when reaching predetermined value.Specifically, controlling organization 27 can have letter
Number collector, electronic counter and motor driver.
Now, automatically controlled rod 1 can find purpose sliding sleeve body 4 by way of counting, and automatically controlled rod 1 is often through a sensing
Device 3, Hall element is just subject to once to trigger so as to produce a pulse signal, and electronic counter counts total signal number
Mesh, when signal is total equal with default value, you can judge that automatically controlled rod reaches target sliding sleeve body.
After reaching target sliding sleeve body, the motor drive mechanism in automatically controlled rod 1 is responded rapidly to, and one group is stretched out from automatically controlled rod and is dialled
Pawl, the open sliding sleeve body 4 under the thrust of fluid, continues to complete follow-up pressing crack construction.Treat that all pressing crack constructions are all complete
Cheng Hou, takes out fracturing string, changes flow string.
Fracturing string in present embodiment, by way of the automatically controlled rod 1 of input sliding sleeve body 4 is opened, and one-trip string is
The transformation of all pressure break points can be completed, without using cable and coiled tubing.The series of pressure break is unrestricted, all fracturing sliding bushs
Size uniformity cause, latus rectum is consistent, with interchangeability, for different pressure break series, it is only necessary to change the electronics in automatically controlled bat
The parameter of counter can reach the purpose for opening correspondence sliding sleeve.Electronic controller (controlling organization 27) is placed in automatically controlled rod 1,
During feeding, using the cooling effect of fracturing fluid, survival probability of the electronic devices and components in subsurface environment is improved.
Herein cited any digital value all include between lower limit to higher limit with the lower value of an incremented and
The all values of upper value, the interval that there are at least two units between any lower value and any much higher value.For example, such as
Fruit elaborates that the value of the quantity or process variable (such as temperature, pressure, time etc.) of a part is from 1 to 90, preferably from 20
To 80, more preferably from 30 to 70, then such as 15 to 85,22 are also clearly listed during purpose is to illustrate the specification and is arrived
68th, 43 to 51,30 to 32 is equivalent.For the value less than 1, suitably think that a unit is 0.0001,0.001,0.01,0.1.
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 stated, all scopes all include all numerals between end points and end points.It is used together with scope
" about " or " approximate " be suitable for two end points of the scope.Thus, " about 20 to 30 " are intended to cover that " about 20 to about
30 ", at least including the end points for indicating.
The all articles for disclosing and reference, including patent application and publication, for various purposes by quoting knot
Together in this.The term " substantially by ... constitute " of description combination should include determined by element, composition, part or step and reality
Other elements, composition, part or the step of the basic novel feature of the combination are not affected in matter.Using term "comprising" or
" including " is describing the combination of element here, composition, part or step it is also contemplated that basic by these elements, composition, part
Or the embodiment that step is constituted.Here by using term " can with ", it is intended to which illustrate that " can with " include is described any
Attribute is all optional.
Multiple element, composition, part or step can be provided by single integrated component, composition, part or step.Alternative
Ground, single integrated component, composition, part or step can be divided into detached multiple element, composition, part or step.It is used for
The open "a" or "an" of description element, composition, part or step is not said to exclude other elements, composition, part
Or step.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouching
State, many embodiments and many applications outside the example for being provided all will be for a person skilled in the art aobvious and easy
See.Therefore, the scope of this teaching should not determine with reference to foregoing description, but should with reference to claims and this
The four corner of the equivalent that a little claims are possessed is determining.It is for comprehensive purpose, all articles and special with reference to including
The disclosure of profit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in aforementioned claim
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 (22)
1. a kind of automatically controlled sliding sleeve, it is characterised in that include：
Sliding sleeve body, it includes the sliding sleeve housing and the slide core in the housing of lengthwise extension；On the sliding sleeve housing
Offer communicate with outside go out fluid through-hole；The slide core by it is described go out fluid through-hole closure, length of the slide core along the housing
Degree direction slide with open it is described go out fluid through-hole；
The sensing device that can be located above the sliding sleeve body, it is formed with magnetic field；
The automatically controlled rod of the sensing device can be passed through, it has induction mechanism, actuating mechanism and controlling organization；The control
Mechanism is connected with the induction mechanism, the actuating mechanism；The controlling organization can sense described in the induction mechanism
During magnetic field, control the actuating mechanism and perform expanding action；The automatically controlled rod is when the actuating mechanism is not carried out expanding action
The slide core, the automatically controlled rod can be passed through after the actuating mechanism performs expanding action the slide core to be driven to move.
2. automatically controlled sliding sleeve as claimed in claim 1, it is characterised in that：The automatically controlled rod includes tailstock, automatically controlled storehouse and bulb；
The tailstock, automatically controlled storehouse and bulb are sequentially connected along the length direction of the automatically controlled rod；The position when bulb is in lower going-into-well
In the bottom of the automatically controlled rod.
3. automatically controlled sliding sleeve as claimed in claim 2, it is characterised in that：The induction mechanism includes being located at the sensing of the bulb
Magnetic pole and Hall element；The quantity of the sensing magnetic pole is multiple, and circumferentially around Hall element distribution；
The Hall element is connected with the controlling organization.
4. automatically controlled sliding sleeve as claimed in claim 3, it is characterised in that：The bulb be provided with two radially run through put
Put through hole；Two through holes of placing are arranged up and down and orthogonal；The sensing magnetic pole is two pairs, and is respectively arranged at two
In the placement through hole；The Hall element is located at described in each pair and senses between magnetic pole.
5. automatically controlled sliding sleeve as claimed in claim 4, it is characterised in that：It is described sensing magnetic pole and it is described place through hole inwall it
Between be provided with sealing ring and backup ring.
6. the automatically controlled sliding sleeve as described in claim 2-4 is arbitrary, it is characterised in that：The bulb has semiglobe.
7. automatically controlled sliding sleeve as claimed in claim 6, it is characterised in that：The bulb is permeability magnetic material system with the automatically controlled storehouse
Into.
8. automatically controlled sliding sleeve as claimed in claim 4, it is characterised in that：Power supply is additionally provided with the automatically controlled storehouse；The power supply with
The controlling organization is connected, and the controlling organization can control the power supply and power to the actuating mechanism, so as to control action
Mechanism.
9. automatically controlled sliding sleeve as claimed in claim 8, it is characterised in that：The upper end in the automatically controlled storehouse and the lower end spiral shell of the tailstock
Line connects, and the lower end in the automatically controlled storehouse is connected with the threaded upper ends of the bulb；The upper end of the bulb is provided with what is extended downwardly
Groove, groove through hole of placing described with two is communicated；The controlling organization is the motor control being arranged in the automatically controlled storehouse
Device processed.
10. automatically controlled sliding sleeve as claimed in claim 3, it is characterised in that：
The actuating mechanism includes electrically-controlled component, trigger component and Stent assembly；
The electrically-controlled component is connected with the controlling organization, and the controlling organization can control the electrically-controlled component by first position
Move to the second place；When the electrically-controlled component is located at first position, the trigger component tightens up the Stent assembly, so that
Internal diameter of the external diameter of the automatically controlled rod less than the slide core；When the electrically-controlled component is located at the second place, the trigger component makes
The Stent assembly is radially expanded, so that internal diameter of the external diameter of the automatically controlled rod more than the slide core.
11. automatically controlled sliding sleeves as claimed in claim 10, it is characterised in that：
The side wall of the tailstock is provided with multiple radially inwardly extending pusher dog grooves；
The Stent assembly includes the pusher dog in the pusher dog groove and recessed with the pusher dog positioned at described pusher dog one end
Pusher dog spring between trench bottom；The other end of the pusher dog is connected with tail plate by pin；The empennage plate part is covered
On the opening of the pusher dog groove；
When the electrically-controlled component is located at first position, the trigger component makes the pusher dog spring maintain compressive state；The electricity
When control component is located at the second place, the trigger component discharges the pusher dog spring, so that the pusher dog spring top supports described group
Pawl stretches out the pusher dog groove, so that the automatically controlled rod is expanding.
12. automatically controlled sliding sleeves as claimed in claim 11, it is characterised in that：
The upper end in the automatically controlled storehouse is provided with places groove and the axially extending bore below the placement groove；Described automatically controlled group
Part is located at the lower section of the trigger component；
The electrically-controlled component includes switch magnetic pole, switching magnet and motor；The motor be located at the axially extending bore in and with
The controlling organization is connected, and the upper end of the output shaft of the motor connects the switching magnet；The switch magnetic pole is covered at
On the switching magnet；Magnetic isolation unit is provided with the switch magnetic pole；The switching magnet can under the drive of the motor by
First position moves to the second place；The switching magnet switchs magnetic pole at the first position to the trigger group described in Jing
Part applies magnetic attraction；The switching magnet is prevented to apply magnetic to the trigger component in the second place by the magnetic isolation unit
Suction.
13. automatically controlled sliding sleeves as claimed in claim 12, it is characterised in that：It is additionally provided with the placement groove and blocks and block
Spring；The end of the switching magnet is provided with the sphere with the cooperation of blocking；It is described to block in the contact of the spring of blocking
Engage with the sphere of the switching magnet under effect, the switching magnet is positioned at into the first position.
14. automatically controlled sliding sleeve as claimed in claim 12, it is characterised in that：
The tailstock is provided with centre bore；The upper end cover of the tailstock is located at bonnet；
The trigger component includes trigger, trigger plates, trigger spring and finger；The lower end of the trigger and the switch magnetic
Pole relies on the magnetic attraction adhesive of the switching magnet, and the upper end of the trigger is connected through the centre bore with the trigger plates
Connect；The finger is arranged on the lower surface of the trigger plates, and inserts in the pusher dog or the pusher dog spring, makes the pusher dog
Spring maintains compressive state.
The 15. automatically controlled sliding sleeves as described in claim 7-14 is arbitrary, it is characterised in that：The sliding sleeve inside the shell is additionally provided with positioned at institute
State the opening ring seat below slide core；It is described opening ring seat shrink when the slide core is moved down and with the bulb fitted seal.
16. automatically controlled sliding sleeves as claimed in claim 15, it is characterised in that：The sliding sleeve shell include upper sliding sleeve housing and under
Sliding sleeve housing；It is described go out fluid through-hole be arranged on the upper sliding sleeve housing；The slide core passes through first with the upper sliding sleeve housing
Slide core shear pin is connected；Interstage sleeve is provided with below the split ring, shown interstage sleeve is by the second slide core shear pin and the low sleeve
Housing is connected；To the opening ring seat limit when inwall of the downslide set of shells is provided with limited step to contact with the interstage sleeve
Position.
17. automatically controlled sliding sleeves as claimed in claim 1, it is characterised in that：The outer wall of the slide core is provided with along its length
First sealing ring and the second sealing ring of interval predeterminable range；The predeterminable range more than it is described go out fluid through-hole outside the sliding sleeve
The length of shell length direction.
18. automatically controlled sliding sleeves as claimed in claim 1, it is characterised in that：The sensing device include it is upper sensing housing and under
Sensing housing；Stretch into the upper sensing housing and be threadedly coupled in the upper end of the lower sensing housing；The upper sensing housing
Inwall is provided with placement step；Magnet assemblies are placed between the upper end for placing step and the lower sensing housing；The magnetic
Iron component can form magnetic field.
19. automatically controlled sliding sleeves as claimed in claim 18, it is characterised in that：The magnet assemblies include arc-shaped magnet and magnet
Retainer；The quantity of the arc-shaped magnet is multiple, and is uniformly distributed circumferentially on the magnet retainer.
A kind of 20. fracturing strings of the automatically controlled sliding sleeve using as described in claim 1 to 19 is arbitrary, it is characterised in that the pressure
Splitting tubing string includes：The pressure break pipeline section of multiple series connection；
The pressure break pipeline section is that the sensing device of packer and the automatically controlled sliding sleeve, sliding sleeve body sequential concatenation are formed.
21. fracturing strings as claimed in claim 20, it is characterised in that：All described automatically controlled sliding sleeve in the fracturing string
Internal diameter it is equal.
22. fracturing strings as described in claim 20 or 21, it is characterised in that：The controlling organization is sensed in sensing mechanism
Counted during the magnetic field, and the actuating mechanism is controlled when institute's count value reaches predetermined value and performed expanding action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611224433.0A CN106593352B (en) | 2016-12-27 | 2016-12-27 | Automatically controlled sliding sleeve and fracturing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611224433.0A CN106593352B (en) | 2016-12-27 | 2016-12-27 | Automatically controlled sliding sleeve and fracturing string |
Publications (2)
| Publication Number | Publication Date |
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| CN106593352A true CN106593352A (en) | 2017-04-26 |
| CN106593352B CN106593352B (en) | 2019-07-09 |
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| CN201611224433.0A Active CN106593352B (en) | 2016-12-27 | 2016-12-27 | Automatically controlled sliding sleeve and fracturing string |
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| CN111255386A (en) * | 2020-01-15 | 2020-06-09 | 大庆黑帝庙稠油试采技术开发有限公司 | Horizontal well segmented oil production process pipe column |
| CN111472716A (en) * | 2020-04-22 | 2020-07-31 | 中国石油天然气集团有限公司 | Method for improving temporary plugging effect of wide natural cracks or artificial cracks |
| RU2739882C1 (en) * | 2019-11-26 | 2020-12-29 | Симойл Пте. Лтд. | Multi-stage hydraulic fracturing coupling |
| CN113123757A (en) * | 2020-01-16 | 2021-07-16 | 成都维锐泰达能源技术有限公司 | Intelligent delivery device |
| CN113137206A (en) * | 2020-01-16 | 2021-07-20 | 成都维锐泰达能源技术有限公司 | Multistage fracturing intelligent control system and control method |
| CN113294157A (en) * | 2021-05-10 | 2021-08-24 | 太原理工大学 | Salt layer cavity construction control method for accelerating dissolution and collapse of medium and thick compact interlayers |
| CN114517660A (en) * | 2022-02-28 | 2022-05-20 | 哈尔滨艾拓普科技有限公司 | Full-bore infinite staged fracturing sliding sleeve based on intelligent label control and implementation method |
| CN115030687A (en) * | 2022-07-03 | 2022-09-09 | 东北石油大学 | Underground multistage fracturing electric control sliding sleeve |
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| CN113294157A (en) * | 2021-05-10 | 2021-08-24 | 太原理工大学 | Salt layer cavity construction control method for accelerating dissolution and collapse of medium and thick compact interlayers |
| CN114517660A (en) * | 2022-02-28 | 2022-05-20 | 哈尔滨艾拓普科技有限公司 | Full-bore infinite staged fracturing sliding sleeve based on intelligent label control and implementation method |
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