CN216866631U - Damping and centralizing device, intelligent opening device and multistage fracturing intelligent control system - Google Patents
Damping and centralizing device, intelligent opening device and multistage fracturing intelligent control system Download PDFInfo
- Publication number
- CN216866631U CN216866631U CN202120269693.XU CN202120269693U CN216866631U CN 216866631 U CN216866631 U CN 216866631U CN 202120269693 U CN202120269693 U CN 202120269693U CN 216866631 U CN216866631 U CN 216866631U
- Authority
- CN
- China
- Prior art keywords
- righting
- damping
- opening device
- sliding sleeve
- centering
- 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.)
- Active
Links
Images
Abstract
The utility model discloses a damping and centering device, an intelligent opening device and a multistage intelligent fracturing control system, and relates to the field of petroleum underground construction, wherein the damping and centering device comprises: the device body is made of elastic materials and is provided with a damping part and a righting part; one end of the damping part is connected with one end of the righting part; the righting part is of a cylindrical structure, a righting wing is arranged in the axial direction of the righting part, and the righting wing extends towards the other end of the righting part; and one end of the damping part or/and the other end of the righting part are/is provided with a connecting structure connected with the underground tool. The electronic components in the electric actuating mechanism can be well protected through the structure, the normal functions of the electronic components are ensured, and the failure of the electronic components is avoided; meanwhile, the electric actuating mechanism is always kept at the middle position of the shaft, the electric actuating mechanism cannot deflect, and the efficiency and the reliability of descending the well are improved.
Description
Technical Field
The utility model relates to the field of petroleum underground construction, in particular to a damping and righting device, an intelligent opening device and a multistage fracturing intelligent control system.
Background
In the downhole tool of the packer + sliding sleeve horizontal well staged fracturing technology, the sliding sleeve is one of the core components, and the opening mode of the sliding sleeve can greatly affect the structure of a shaft and the structure of ground equipment, and the time and the cost of fracturing construction.
The fracturing sliding sleeve is opened in various ways, a common method is that a ball is thrown from a well mouth, and after the ball falls to the sliding sleeve position, the ball is pressurized to an oil pipe, and the fracturing ball is pushed by hydraulic pressure to open the sliding sleeve. The process of bowling is simple, opens reliably, but the sliding sleeve latus rectum on the fracturing string reduces along the direction of root end to toe end gradually, and when big discharge capacity fracturing construction, the sliding sleeve of toe end can produce apparent throttling action to fracturing fluid for ground fracturing equipment operating mode worsens, so the progression of staged fracturing will receive the restriction.
In order to overcome this problem, a sliding sleeve with a flexible ball seat inside is provided, the ball seat in such a sliding sleeve is often made into a split type or an open type, the diameter of the split ball seat is larger than that of the fracturing ball, the flexible ball seat is compressed into a complete ball seat by means of fluid force, and the sliding sleeve is opened. The disadvantage of this tool is that the structure is complex and the hydraulic feedback line is exposed to the wellbore and is vulnerable to damage.
With the development of the technology, a novel electric control sliding sleeve appears, wherein the main functional components of the sliding sleeve are an electronic controller and an electric actuating mechanism, the electric actuating mechanism comprises a large number of electronic components, a power supply and other devices, the electric actuating mechanism can be contacted and collided with a well wall in the process of descending the well, and the descending speed is high, so that the electric actuating mechanism can generate large impact force and the electronic components in the electric actuating mechanism can be damaged; meanwhile, the inner diameter of the electric actuating mechanism is smaller than that of the shaft, so that the electric actuating mechanism can incline to contact with the shaft wall in the process of descending the well, and the electric actuating mechanism cannot normally descend the well.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a damping and centering device and an intelligent opening device so as to improve the reliability of the electric actuating mechanism in working.
The technical scheme for solving the technical problems is as follows:
damping righting device includes:
the device body is made of elastic materials and is provided with a damping part and a righting part;
one end of the damping part is connected with one end of the righting part; the righting part is of a cylindrical structure, a righting wing is arranged in the axial direction of the righting part, and the righting wing extends towards the other end of the righting part;
and one end of the damping part or/and the other end of the righting part are/is provided with a connecting structure connected with the underground tool.
The working principle and the beneficial effects of the utility model are as follows: when the shock absorption part is impacted by well fluid or the inner wall of a shaft in the process of descending the well of the electric actuating mechanism, such as an intelligent opening device, the shock absorption effect of the shock absorption part is smaller, so that the electronic components in the electric actuating mechanism can be well protected, the normal functions of the electronic components are ensured, the reliability of the electric actuating mechanism is improved, and the failure of the electronic components is avoided; meanwhile, the electric actuating mechanism is kept in the middle of the shaft all the time under the action of the centering part in the process of descending the well, the electric actuating mechanism cannot deflect, and the efficiency and the reliability of descending the well are improved.
On the basis of the technical scheme, the utility model can be further improved as follows.
Further, the shock absorption portion and the righting portion are integrated members.
The beneficial effect of adopting the further scheme is that: the device main body is a one-piece component, so that the structure is simple.
On the basis of the technical scheme, the utility model can be further improved as follows.
Further, shock attenuation portion with right the portion for dividing the body component, shock attenuation portion with right the portion and pass through the mutual joint of joint structure.
The beneficial effect of adopting the above further scheme is: the device main body of the split component can be provided with different structures for the damping part and the righting part according to different applications and requirements.
On the basis of the technical scheme, the utility model can be further improved as follows.
Further, the hardness of the shock absorption part is smaller than that of the righting part.
The beneficial effect of adopting the further scheme is that: the shock absorption part with lower hardness ensures good shock absorption effect; the righting part with higher hardness can not generate great deformation, thereby ensuring the righting effect.
On the basis of the technical scheme, the utility model can be further improved as follows.
Further, a coil slot for placing a signal transmission line and a wire slot for passing a control line are arranged between the damping part and the righting part.
The beneficial effect of adopting the further scheme is that: the coil slot and the wire slot are arranged between the damping part and the righting part, and the damping part and the righting part are positioned at the front end of the electric actuating mechanism, so that the coil slot is arranged at the front end of the electric actuating mechanism, the electric actuating mechanism is ensured to acquire related control signals earlier, and the control reliability of the electric actuating mechanism is improved; meanwhile, due to the good damping effect of the device main body, the coil in the electric actuating mechanism is better protected.
On the basis of the technical scheme, the utility model can be further improved as follows.
Further, the shock absorbing part is in a circular truncated cone shape, and the diameter of the shock absorbing part gradually decreases from one end of the shock absorbing part to the other end of the shock absorbing part.
The beneficial effect of adopting the further scheme is that: the damping part is arranged to be in a round table shape, so that well liquid flows along the inclined plane of the round table, the resistance of the well liquid to the electric execution structure is reduced, and the well descending speed of the electric execution structure is improved.
On the basis of the technical scheme, the utility model can be further improved as follows.
Furthermore, a plurality of drainage grooves are formed in the righting wing and extend upwards along the axial direction of the righting portion.
The beneficial effect of adopting the further scheme is that: the plurality of drainage grooves distributed on the righting wing can drain well liquid, reduce the forward resistance of the electric actuating structure and enable the electric actuating structure to move forward more stably, and meanwhile, the righting wing is prevented from being overturned or washed away from the damping part by water pumped from the rear of the electric actuating structure.
On the basis of the technical scheme, the utility model can be further improved as follows.
Further, the elastic material is high-temperature-resistant soluble rubber.
The beneficial effect of adopting the further scheme is that: the high-temperature resistant soluble rubber plays a good role in damping and centralizing in the working process of going into the well. Meanwhile, after the work is finished, the soluble rubber is directly dissolved, and no residue exists.
On the basis of the technical scheme, the utility model can be improved as follows.
Furthermore, the device main body is provided with a flow guide through hole which penetrates through the device main body in the axial direction.
The beneficial effect of adopting the further scheme is that: through setting up the water conservancy diversion hole, be convenient for set up other parts in the water conservancy diversion hole.
The present invention also provides an intelligent opening device, comprising:
an intelligent opening device main body, which is provided with an opening device rear section and an opening device front section;
in the damping and centering device, the front section of the opening device is connected with the damping and centering device through the connecting structure.
The intelligent opening device has the beneficial effects that: the intelligent opening device is a common underground electric actuating mechanism, and in the process of descending the well, the damping and righting device connected with the intelligent opening device comprises a damping part and a righting part, when the damping part is impacted by well fluid or the inner wall of a shaft, the electronic components in the intelligent opening device are less subjected to vibration impact through the damping effect of the damping part, so that the electronic components in the intelligent opening device can be well protected, the normal functions of the electronic components are ensured, the reliability of the intelligent opening device is improved, and the failure of the electronic components is avoided; meanwhile, the intelligent opening device is kept in the middle of the shaft all the time under the action of the centering portion in the process of going into the well, the intelligent opening device cannot deflect, friction between the intelligent opening device and the inner wall of the casing pipe is reduced, and efficiency and reliability of going into the well are improved.
On the basis of the technical scheme, the utility model can be further improved as follows.
Furthermore, the bowl-shaped opening device further comprises a G-shaped sealing device made of elastic materials, wherein the G-shaped sealing device is connected with the rear section of the opening device in a sealing mode and is far away from the rear section of the opening device to form a bowl-shaped structure.
The beneficial effect of adopting the further scheme is that: because G type sealing device forms the bowl structure with opening device back end, the pump sending of intelligent opening device of being convenient for, simultaneously, G type sealing device is formed by elastic material preparation, right and the cushioning effect to intelligent opening device in the pumping process in the pit.
The utility model also provides a multistage intelligent fracturing control system, which comprises:
the sliding sleeve assembly comprises an outer sliding sleeve and an inner sliding sleeve, and the outer sliding sleeve is circumferentially provided with holes penetrating through the outer sliding sleeve in the radial direction; the inner wall of one end of the inner sliding sleeve is provided with a limiting boss, and the inner sliding sleeve is fixedly sleeved on the inner wall of the outer sliding sleeve and seals the hole;
and
in the intelligent opening device, the number of the intelligent opening devices corresponds to the number of the sliding sleeve assemblies one by one, and the intelligent opening devices are positioned in the inner sliding sleeve and used for opening the holes.
The multistage intelligent fracturing control system has the beneficial effects that: the intelligent opening device is arranged in the multistage intelligent fracturing control system, and in the process of descending the well of the intelligent opening device, the damping and righting device connected with the intelligent opening device comprises the damping part and the righting part, when the damping part is impacted by well fluid or the inner wall of a shaft and an inner sliding sleeve, through the damping effect of the damping part, the vibration impact on electronic components in the intelligent opening device is smaller, so that the electronic components in the intelligent opening device can be well protected, the normal functions of the electronic components are ensured, the reliability of the intelligent opening device is improved, and the failure of the electronic components is avoided; meanwhile, the intelligent opening device is kept in the middle of the shaft all the time under the action of the centering portion in the process of going into the well, the intelligent opening device cannot deflect, and the efficiency and the reliability of going into the well are improved.
Drawings
FIG. 1 is a schematic structural view of a first embodiment of a damping and centering device according to the present invention;
FIG. 2 is a right side view of FIG. 1;
FIG. 3 is a sectional view in one direction of FIG. 2;
FIG. 4 is a cross-sectional view in one direction of an embodiment of the shock absorbing and centering device;
FIG. 5 is a schematic structural view of a third embodiment of the shock absorbing and centering device of the present invention;
FIG. 6 is a right side view of FIG. 5;
FIG. 7 is a sectional view in one direction of FIG. 6;
FIG. 8 is a schematic structural diagram of an embodiment of an intelligent opening device according to the present invention;
FIG. 9 is a schematic structural diagram of a second embodiment of the intelligent opening device of the present invention;
fig. 10 is a schematic structural diagram of an embodiment of the intelligent control system for multi-stage fracturing.
In the drawings, the components represented by the respective reference numerals are listed below:
1. damping part, 11, connection structure, 12, coil groove, 13, wire guide groove, 2, righting part, 21, righting wing. 22. A drainage groove. 23. The device comprises a flow guide through hole, 3, an intelligent opening device main body, 31, an opening device rear section, 32, an opening device front section, 4, a sliding sleeve assembly, 41, an outer sliding sleeve, 42, an inner sliding sleeve, 43, an eyelet, 44, a limiting boss and 5 and a G-shaped sealing device.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth to illustrate, but are not to be construed to limit the scope of the utility model.
Fig. 1 to 3 are schematic structural views of a first embodiment of the damping and centering device of the present invention.
A shock absorbing centralizer comprising:
the device body is made of elastic materials and is provided with a damping part 1 and a righting part 2.
One end of the damping part 1 is connected with one end of the righting part 2; the righting part 2 is in a cylindrical structure, a righting wing 21 is arranged in the axial direction of the righting part 2, and the righting wing 21 extends towards the other end of the righting part 2. The structure of the righting wing 21 is that the righting wing 21 is separated from the body of the righting part 2 and has a certain distance at the position close to the other end of the righting part 2; the overall outer diameter of the centralizing wings 21 is slightly smaller than the inner diameter of the wellbore.
One end of the shock-absorbing part 1 and the other end of the centralizing part 2 are both provided with a connection structure 11 to be connected with a downhole tool.
In the present embodiment, the damper unit 1 and the support unit 2 are integrated members.
The damper portion 1 is in the shape of a circular truncated cone, and the diameter of the damper portion 1 gradually decreases from one end of the damper portion 1 to the other end of the damper portion 1.
The righting wing 21 is provided with 4 drainage grooves 22, and the 4 drainage grooves 22 extend along the axial direction of the righting part 2 and are uniformly distributed in the circumferential direction of the righting part 2.
The working process and principle of the damping and righting device of the embodiment are as follows: the damping and centering device is arranged at the head of the intelligent opening device, namely the damping and centering device is arranged in the direction of entering a shaft, when the damping part 1 of the damping and centering device is impacted by well fluid or the inner wall of the shaft in the process of descending the intelligent opening device into the well, through the damping effect of the damping part 1, the vibration impact on electronic components in the intelligent opening device is smaller, the electronic components in the electric actuating mechanism can be well protected, the normal functions of the electronic components are ensured, the reliability of the electric actuating mechanism is improved, and the failure of the electronic components is avoided; meanwhile, the intelligent opening device keeps the electric actuating mechanism at the middle position of the shaft all the time under the action of the righting part 2 in the process of going into the well, the electric actuating mechanism cannot deflect, the intelligent opening device reaches the preset position, and the efficiency and the reliability of the intelligent opening device going into the well are ensured.
The damping and righting device of the integrated component is simple in structure, achieves the damping and righting functions, and meanwhile is directly connected and fixed with the intelligent opening device through the connecting structure 11. In this embodiment, connection structure 11 sets up to two, is located shock attenuation portion 1 and righting portion 2 respectively, conveniently matches different intelligent opening device's connection.
The shock absorption part 1 is in a round table shape, so that well liquid flows along the inclined plane of the round table, the resistance of the well liquid to the electric execution structure is reduced, the pushing energy of the intelligent opening device is reduced, and the well descending speed of the intelligent opening device is improved.
The plurality of drainage grooves 22 on the righting wing 21 can drain well liquid, reduce the forward resistance of the electric actuating structure and enable the electric actuating structure to move forward more stably, and meanwhile, the righting wing 21 is prevented from being overturned or rushed out of the damping part 1 by liquid pumped from the rear of the electric actuating structure. In particular embodiments, the configuration of the drainage grooves 22 may be configured as grooves, trapezoidal configurations, etc., depending on downhole conditions. Wherein the depth of the drainage groove 22 in the radial direction of the centralizing part 2 is also set according to the specific use condition of the product.
In this embodiment, the device body is provided with a flow guide through hole 23 extending in the axial direction thereof.
Through setting up the water conservancy diversion hole, be convenient for set up other parts in the water conservancy diversion hole. For example, in some intelligent opening devices, some sensing signal starting driving structures need to be arranged, and the sensing signal starting driving structures can be arranged in the diversion holes and drive the starting of the sensing signal through the power of well fluid.
Second embodiment of the damping and centering device of the utility model, referring to fig. 4, fig. 4 is a sectional view in one direction of the second embodiment, and compared with the first embodiment, the second embodiment is different in that the connecting structure 11 is arranged as one and is located on the damping portion 1, so that the second embodiment can be conveniently matched with the connection of different intelligent opening devices.
Likewise, in the embodiment, the connecting structure 11 is provided as one, and may be located on the righting portion 2 to meet different requirements. The concrete shape of the connecting structure 11 is convenient and quick to connect with the intelligent opening device, and the connecting structure can bear the impact force of certain well liquid and the well wall.
For the device main body which is arranged as an integrated component, the selection of the elastic material can be selected according to the practical application condition of the intelligent opening device or the underground electric actuator, and if the intelligent opening device is heavy and the number of electronic components in the intelligent opening device is large, the elastic material can be selected as a material with low hardness; if the intelligent opening device is light and the internal electronic components are small, the elastic material can be selected from materials with high hardness.
Referring to fig. 5 to 7, a third embodiment of the damping and centering device according to the present invention is schematically illustrated in structure, and in this embodiment, the damping and centering device includes: the device body is made of elastic materials and is provided with a damping part 1 and a supporting part 2.
One end of the damping part 1 is connected with one end of the righting part 2; the centering portion 2 has a cylindrical structure, and the centering portion 2 has a centering wing 21 in the axial direction, and the centering wing 21 extends toward the other end of the centering portion 2.
One end of the shock absorption part 1 and the other end of the centralizing part 2 are provided with a connecting structure 11 connected with a downhole tool.
Wherein, damping part 1 and righting part 2 are the components of a whole that can function independently, and damping part 1 and righting part 2 pass through the mutual joint of joint structure. The clamping structure is a groove and boss structure, so that the clamping structure is very convenient; meanwhile, the structure can be similar to a dovetail groove structure, and the damping part 1 and the righting part 2 can be firmly clamped with each other.
In the present embodiment, the stiffness of the shock absorbing portion 1 is smaller than the stiffness of the righting portion 2. The shock absorption part 1 with smaller hardness ensures good shock absorption effect; the higher hardness of the centering portion 2 prevents the centering portion 2 from being greatly deformed, thereby ensuring the centering effect.
In the present embodiment, the straightening wing 21 is provided with 8 drainage grooves 22, and the 8 drainage grooves 22 extend in the axial direction of the straightening portion 2 and are uniformly distributed in the circumferential direction of the straightening portion 2. The plurality of drainage grooves 22 enable the pressure of well fluid to be more uniformly distributed on the righting wing 21, and the righting wing 21 is prevented from overturning due to overlarge local pressure.
In the present embodiment, a coil slot 11 for placing a signal transmission line and a wire slot 12 for passing a control wire are provided between the damping part 1 and the righting part 2. In practical use, firstly, a signal transmission line is wound on the coil slot 11, a control line is electrically connected with the signal transmission line, and then the control line is arranged in the wire slot 12; and finally, the damping part 1 and the righting part 2 are clamped together.
In the above embodiment, the damping portion 1 and the centering portion 2 are both made of high-temperature-resistant soluble rubber materials, so that the damping portion 1 and the centering portion 2 are dissolved in well fluid in the later drifting process under the condition of ensuring the damping and centering effects, and drilling is not needed.
In the above embodiment, the damping portion 1 is provided with an inner cavity, and the middle position of the inner cavity is recessed toward the outer surface of the damping portion 1 to form a concave structure, which has a good elastic buffering effect at the middle position and has an optimal damping effect.
The existing centralizing devices are all made of hard materials such as metal and the like, and hard contact with the inner wall of a shaft is realized so as to achieve the centralizing effect. In the above embodiment of the present invention, the centering portion 2 is made of an elastic and soft material, so that the centering effect is achieved, and the shock absorption effect is also achieved, so that the centering effect is achieved, and the electronic components are protected from being damaged by shock during the process of putting the downhole tool of the product including the electronic components.
The present invention further provides a first embodiment of an intelligent opening device, specifically referring to fig. 8, including:
an intelligent opening device main body 3, the intelligent opening device main body 3 is provided with an opening device rear section 31 and an opening device front section 32; the rear section 31 of the opening device is the pumping end in the downhole direction, and the front section 32 of the opening device is the section entering the wellbore first in the downhole direction. And a shock-absorbing righting device to which the front opening device section 32 is connected by a connecting structure (not shown in the figures).
In this embodiment, the damping and centering device adopted by the intelligent opening device is the damping and centering device in the third embodiment, that is, a connection structure (not shown in the figure) connected with the downhole tool is arranged at both one end of the damping portion 1 and the other end of the centering portion 2; the intelligent opening device main body 3 is fixedly connected with the intelligent opening device main body through a connecting structure.
The beneficial effect of the intelligent opening device of this embodiment: the intelligent opening device is a common underground electric actuating mechanism, in the process of descending the well, the damping and righting device connected with the intelligent opening device comprises a damping part 1 and a righting part 2, when the damping part 1 is impacted by well fluid or the inner wall of a shaft, through the damping effect of the damping part 1, the vibration impact on electronic components in the intelligent opening device is smaller, the electronic components in the intelligent opening device can be well protected, the normal functions of the electronic components are ensured, the reliability of the intelligent opening device is improved, and the failure of the electronic components is avoided; simultaneously, intelligence opening device is at the in-process that goes into the well, through the effect of portion 2 of rightting for intelligence opening device keeps at the pit shaft intermediate position always, and intelligence opening device can not take place to deflect, has improved the efficiency and the reliability of going into the well.
The utility model further provides an embodiment two of the intelligent opening device, and particularly, referring to fig. 9, compared with the embodiment one of the intelligent opening device, the intelligent opening device further comprises a G-shaped sealing device 5 made of an elastic material, wherein the G-shaped sealing device 5 is hermetically connected with the rear section 31 of the opening device and forms a bowl-shaped structure in a direction away from the rear section 31 of the opening device.
As shown in the figure, in the pumping process of the intelligent opening device, pumping liquid enters the G-shaped sealing device 5 of the bowl structure, and great thrust is generated on the intelligent opening device, so that the intelligent opening device advances underground. Meanwhile, the G-shaped sealing device 5 made of elastic materials plays a role in righting and damping the intelligent opening device in the underground pumping process.
The present invention further provides an embodiment of a multi-stage intelligent fracturing control system, specifically referring to fig. 10, including:
a plurality of interconnected sliding sleeve assemblies 4, each sliding sleeve assembly comprises an outer sliding sleeve 41 and an inner sliding sleeve 42, and the outer sliding sleeve 41 is circumferentially provided with an eyelet 43 which penetrates through the outer sliding sleeve 41 in the radial direction; the inner wall of one end of the inner sliding sleeve 42 is provided with a limit boss 44, the inner sliding sleeve 42 is fixedly sleeved on the inner wall of the outer sliding sleeve 41 and seals the eyelet 43 and the intelligent opening devices, the number of the intelligent opening devices corresponds to the number of the sliding sleeve assemblies 4 one by one, and the intelligent opening devices are positioned in the inner sliding sleeve 42 and used for opening the eyelet 43.
It should be noted that 2 intelligent opening devices are illustrated in the wellbore in the figure, and correspond to 2 sliding sleeve assemblies 4. In a specific application, the well bore can be a transverse well bore or a longitudinal well bore.
The beneficial effects of the multistage fracturing intelligent control system of the embodiment are as follows: the intelligent opening device is arranged in the multistage intelligent fracturing control system, in the process of descending the well of the intelligent opening device, the damping and righting device connected with the intelligent opening device comprises a damping part 1 and a righting part 2, when the damping part 1 is impacted by well fluid or the inner wall of a shaft and an inner sliding sleeve, through the damping effect of the damping part 1, the vibration impact on electronic components in the intelligent opening device is smaller, the electronic components in the intelligent opening device can be well protected, the normal functions of the electronic components are ensured, the reliability of the intelligent opening device is improved, and the electronic components are prevented from losing efficacy; meanwhile, the intelligent opening device is kept in the middle of the shaft all the time under the action of the centering part 2 in the process of going into the well, the intelligent opening device cannot deflect, and the efficiency and the reliability of going into the well are improved.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. Damping righting device, its characterized in that includes:
the device body is made of elastic materials and is provided with a damping part and a righting part;
one end of the damping part is connected with one end of the righting part; the righting part is of a cylindrical structure, a righting wing is arranged in the axial direction of the righting part, and the righting wing extends towards the other end of the righting part;
and one end of the damping part or/and the other end of the righting part are/is provided with a connecting structure connected with the underground tool.
2. The shock absorbing and centering device of claim 1, wherein said shock absorbing portion and said centering portion are an integral component.
3. The damping and centering device as claimed in claim 1, wherein the damping portion and the centering portion are separate members, and the damping portion and the centering portion are clamped with each other by a clamping structure.
4. The shock absorbing and centering device of claim 3, wherein the stiffness of said shock absorbing portion is less than the stiffness of said centering portion.
5. The shock-absorbing and centering device as claimed in claim 3, wherein a coil slot for placing a signal transmission line and a wire slot for passing a control line are provided between said shock-absorbing portion and said centering portion.
6. The shock-absorbing and centering device according to claim 1, wherein said shock-absorbing portion has a circular truncated cone shape, and a diameter of said shock-absorbing portion gradually decreases from one end of said shock-absorbing portion to the other end of said shock-absorbing portion.
7. The shock-absorbing righting device as claimed in any one of claims 1 to 6, wherein a plurality of drainage grooves are provided on the righting wing, the drainage grooves extending in an axial direction of the righting portion.
8. The shock absorbing and centering device of claim 7, wherein said elastic material is a high temperature resistant soluble rubber.
9. A shock absorbing and centralizing device according to any one of claims 1 to 6, characterised in that the device body is provided with a flow guiding through hole running axially through it.
10. Intelligence opening device, its characterized in that includes:
an intelligent opening device main body, which is provided with an opening device rear section and an opening device front section;
the shock absorbing and centering device as claimed in any one of claims 1 to 9, wherein the front section of the opening device is connected to the shock absorbing and centering device through the connecting structure.
11. The intelligent opening device of claim 10, further comprising a G-seal made of an elastic material, wherein the G-seal is sealingly connected to the rear section of the opening device and forms a bowl structure in a direction away from the rear section of the opening device.
12. Multistage fracturing intelligence control system, its characterized in that includes:
the sliding sleeve assembly comprises an outer sliding sleeve and an inner sliding sleeve, and the outer sliding sleeve is circumferentially provided with holes penetrating through the outer sliding sleeve in the radial direction; the inner wall of one end of the inner sliding sleeve is provided with a limiting boss, and the inner sliding sleeve is fixedly sleeved on the inner wall of the outer sliding sleeve and seals the hole;
and
the intelligent opening device of claim 10 or 11, the number of intelligent opening devices corresponding to the number of sliding sleeve assemblies one to one, the intelligent opening device being located within the inner sliding sleeve for opening the eyelet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120269693.XU CN216866631U (en) | 2021-01-29 | 2021-01-29 | Damping and centralizing device, intelligent opening device and multistage fracturing intelligent control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120269693.XU CN216866631U (en) | 2021-01-29 | 2021-01-29 | Damping and centralizing device, intelligent opening device and multistage fracturing intelligent control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216866631U true CN216866631U (en) | 2022-07-01 |
Family
ID=82120632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120269693.XU Active CN216866631U (en) | 2021-01-29 | 2021-01-29 | Damping and centralizing device, intelligent opening device and multistage fracturing intelligent control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216866631U (en) |
-
2021
- 2021-01-29 CN CN202120269693.XU patent/CN216866631U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9249632B2 (en) | Vibration damper | |
| CN202348191U (en) | One-trip window sidetrack drilling tool | |
| CN108625769B (en) | Torsional pulse drilling speed tool | |
| CN112922531B (en) | Anti-backflow directional drill bit with back flushing function and construction method thereof | |
| CN104563871A (en) | Hydraulic punching, dredging and slag discharge integrated device and method | |
| CN110056333A (en) | Hydraulic directional abrasive perforating and slot integrated apparatus and its application method | |
| CN205558849U (en) | Utilize turbine to produce downhole tool of shock oscillation | |
| CN110761735A (en) | Ball-carrying type dissolvable bridge plug | |
| CN216866631U (en) | Damping and centralizing device, intelligent opening device and multistage fracturing intelligent control system | |
| CN212054560U (en) | Drilling pressure control type underground circulation short joint | |
| CN113338803A (en) | Ground immersion process drilling windowing cutting tool and windowing method | |
| CN112832704A (en) | Damping and centering device for pumping intelligent opening device, intelligent opening device and multi-stage fracturing intelligent control system | |
| CN210049819U (en) | Small borehole circumferential impact generating device for coiled tubing drilling | |
| CN111894496A (en) | Drilling pressure control type underground circulation short circuit and coiled tubing drill plug dynamic flushing process | |
| CN109763784B (en) | Split bridge plug hydraulic setting tool and setting method thereof | |
| CN216691015U (en) | G-type sealing device, intelligent opening device and multi-stage fracturing intelligent control system | |
| CN106499334B (en) | Downhole sliding sealing tool, infinitely extending drilling device and drilling method thereof | |
| CN111946261B (en) | Adjustable directional drilling device for unconventional reservoir horizontal well | |
| RU55848U1 (en) | BOTTOM FEEDER | |
| CN114607291A (en) | Sleeve shoe | |
| CN211950434U (en) | Large-drift-diameter fracturing bridge plug | |
| CN109915028B (en) | Battery type motor driven double speed PDC drill bit | |
| CN217501612U (en) | Full-sealed hydraulic cutting knife started by throwing ball | |
| CN214012829U (en) | Underground switch trigger device and underground intelligent opening tool | |
| CN220705626U (en) | Diameter-variable PDC drill bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |