CN112832705B - G-shaped sealing device, intelligent opening device and multistage fracturing intelligent control system of downhole tool - Google Patents
G-shaped sealing device, intelligent opening device and multistage fracturing intelligent control system of downhole tool Download PDFInfo
- Publication number
- CN112832705B CN112832705B CN202110127145.8A CN202110127145A CN112832705B CN 112832705 B CN112832705 B CN 112832705B CN 202110127145 A CN202110127145 A CN 202110127145A CN 112832705 B CN112832705 B CN 112832705B
- Authority
- CN
- China
- Prior art keywords
- downhole tool
- sliding sleeve
- shaped sealing
- wall
- sealing cylinder
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 136
- 238000005086 pumping Methods 0.000 claims abstract description 44
- 239000013013 elastic material Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 14
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 4
- 239000004033 plastic Substances 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 description 12
- 230000009286 beneficial effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 10
- 239000000306 component Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/066—Valve arrangements for boreholes or wells in wells electrically actuated
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Devices (AREA)
Abstract
The invention relates to the field of petroleum underground construction, in particular to an underground tool G-type sealing device, an intelligent opening device and a multistage fracturing intelligent control system, wherein the underground tool G-type sealing device comprises: the G-shaped sealing cylinder is made of elastic materials, one end of the G-shaped sealing cylinder is connected with one end of the downhole tool in a sealing mode, a bowl-shaped structure is formed in the direction away from the downhole tool, and the outer side wall of the G-shaped sealing cylinder is abutted to the inner wall of the shaft. In the process of opening the underground sliding sleeve, the G-shaped sealing cylinder is used for pumping an underground tool; after the downhole tool completes the opening of the sliding sleeve, the downhole tool cannot move downhole any more, and when the G-shaped sealing cylinder is subjected to large pressure, plastic deformation is generated to seal the gap between the downhole tool and the inner wall of the shaft, so that the sealing effect of the G-shaped sealing device on the shaft is realized. After the underground tool completes the opening of the sliding sleeve, the plugging tool does not need to be put in separately or additionally, so that the working efficiency is greatly improved.
Description
Technical Field
The invention relates to the field of petroleum underground construction, in particular to an underground tool G-type sealing device, an intelligent opening device and a multistage fracturing intelligent control system.
Background
In the underground tool of 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 have great influence on the structure of a shaft and ground equipment, the time and cost of fracturing construction.
The fracturing sliding sleeve is opened in various modes, and is frequently thrown to open by a ball, and after the fracturing sliding sleeve falls to the sliding sleeve position, the fracturing sliding sleeve is pressurized to the oil pipe, so that the fracturing ball is hydraulically pushed to open the sliding sleeve. The ball throwing process is simple, the opening is reliable, but the drift diameter of the sliding sleeve on the fracturing string gradually decreases along the direction from the root end to the toe end, and when large-displacement fracturing is performed, the sliding sleeve at the toe end can have an obvious throttling effect on fracturing fluid, so that the working condition of ground fracturing equipment is deteriorated, and the stage number of the segmented fracturing is limited.
To overcome this problem, sliding sleeves with flexible ball seats inside are known, and the ball seats in such sliding sleeves are often made split or open, the split ball seats having a larger diameter than the fracturing ball, and the flexible ball seats are compressed by fluid forces to become complete ball seats and the sliding sleeve is opened.
With the development of technology, a novel electronic control sliding sleeve is developed, wherein the main functional components of the sliding sleeve are an electronic controller and an electric actuator, and the electric actuator opens the sliding sleeve through electronic control.
The downhole tool also needs to be independently put in a downhole plugging tool after the sliding sleeve is opened so as to realize sealing of the shaft.
Disclosure of Invention
The invention aims to provide a G-type sealing device for pumping and sealing a shaft of a downhole tool so as to improve the efficiency of shaft sealing when a sliding sleeve pumps and opens.
The technical scheme for solving the technical problems is as follows:
A downhole tool G-type sealing device comprising: the G-shaped sealing cylinder is made of elastic materials, one end of the G-shaped sealing cylinder is connected with one end of the downhole tool in a sealing mode, a bowl-shaped structure is formed in the direction away from the downhole tool, and the outer side wall of the G-shaped sealing cylinder is abutted to the inner wall of the shaft.
The working principle and the beneficial effects of the invention are as follows: because the G-shaped sealing cylinder forms a bowl-shaped structure in the direction away from the downhole tool, pumping liquid is positioned in the bowl-shaped structure in the process of pumping the downhole tool, so that the downhole tool can be well pushed to move forwards; the outer side wall of the G-shaped sealing cylinder is abutted against the inner wall of the shaft, the gap between the G-shaped sealing cylinder and the inner wall of the shaft is small, pumping force is transmitted to the downhole tool through the G-shaped sealing cylinder, and pumping efficiency is improved; after the downhole tool completes the opening of the sliding sleeve, the downhole tool can not move downhole any more, pumping liquid continuously applies pressure to the G-shaped sealing cylinder, and the G-shaped sealing cylinder is made of elastic materials. After the underground tool completes the opening of the sliding sleeve, the plugging tool does not need to be put in separately or additionally, so that the working efficiency is greatly improved.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the method further comprises the following steps: the support ring is fixedly connected with the downhole tool and extends along the radial direction of the downhole tool to the inner wall of the shaft; the support ring is located between the G-type seal cartridge and the downhole tool and has a spacing from the wellbore inner wall.
The beneficial effects of adopting the further scheme are as follows: the support ring is used for supporting the deformation body of the G-shaped sealing cylinder after being subjected to pressure.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the support ring has a ledge that extends toward the G-seal cartridge in a direction proximate the inner wall of the wellbore.
The beneficial effects of adopting the further scheme are as follows: the protruding eaves extend towards the G-shaped sealing cylinder in the direction close to the inner wall of the shaft, so that the outer diameter of the protruding eaves is not larger than that of the downhole tool, and the downhole tool cannot receive additional reaction force in the process of descending the shaft.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the ledge has a gap in a radial direction of the downhole tool, and the ledge abuts against an axial direction of the downhole tool after being unfolded.
The beneficial effects of adopting the further scheme are as follows: the clearance of the convex eaves ensures that the G-shaped sealing cylinder is expanded along with the convex eaves after being pressed, the convex eaves are axially abutted with the downhole tool after being expanded, and the downhole tool provides support for the convex eaves.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the spacing between the eave and the inner wall of the shaft after the eave is unfolded is smaller than the spacing between the downhole tool and the inner wall of the shaft.
The beneficial effects of adopting the further scheme are as follows: the support of the convex eave to the G-shaped sealing cylinder after being pressed and sealed is ensured, and the pressure bearing capacity of the G-shaped sealing cylinder is improved; meanwhile, as the distance between the convex eave and the inner wall of the shaft is smaller, the sealing reliability is improved.
On the basis of the technical scheme, the invention can be improved as follows.
Further, a shearing ring is arranged between the G-shaped sealing cylinder and the downhole tool, one side of the shearing ring is embedded into the downhole tool, and the other side of the shearing ring extends along the radial direction of the downhole tool to the G-shaped sealing cylinder and is abutted with one end of the G-shaped sealing cylinder.
The beneficial effects of adopting the further scheme are as follows: by arranging the shearing ring, the G-shaped sealing cylinder cannot be deformed by pumping pressure to seal with the inner wall of the shaft in the process of pumping the downhole tool, and the pumping effect is ensured.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the other side of the shearing ring is embedded into one end of the G-shaped sealing cylinder.
The beneficial effects of adopting the further scheme are as follows: the shearing ring can prevent the G-type sealing cylinder from sealing with the inner wall of the shaft in advance in the pumping process, supports the G-type sealing cylinder when the pumping is performed, prevents liquid leakage caused by uneven forward movement, and simultaneously serves as a framework to support the G-type sealing cylinder when the G-type sealing cylinder is pressed and spread in sealing.
The invention also provides an intelligent opening device, comprising:
the intelligent opening device main body is provided with an opening device rear section and an opening device front section, and one end of the G-shaped sealing cylinder is in sealing connection with the opening device rear section.
The intelligent opening device has the beneficial effects that: the intelligent opening device comprises the G-shaped sealing device of the downhole tool, the G-shaped sealing cylinder of the G-shaped sealing device of the downhole tool forms a bowl-shaped structure in the direction away from the downhole tool, and pumping liquid is positioned in the bowl-shaped structure in the process of pumping the downhole tool, so that the downhole tool can be well pushed to move forwards; the outer side wall of the G-shaped sealing cylinder is abutted with the inner wall of the shaft; the gap between the G-shaped sealing cylinder and the inner wall of the shaft is smaller, and pumping force is transmitted to the downhole tool through the G-shaped sealing cylinder, so that pumping efficiency is improved; after the downhole tool completes the opening of the sliding sleeve, the downhole tool can not move downhole any more, pumping liquid continuously applies pressure to the G-shaped sealing cylinder, and the G-shaped sealing cylinder is made of elastic materials. After the underground tool completes the opening of the sliding sleeve, the plugging tool does not need to be put in separately or additionally, so that the working efficiency is greatly improved.
The invention also provides a multistage fracturing intelligent control system, which comprises:
the sliding sleeve assembly comprises an outer sliding sleeve and an inner sliding sleeve, and holes penetrating through the outer sliding sleeve in the radial direction are formed in the circumference of the outer sliding sleeve; 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 is located in the inner sliding sleeve and used for opening the holes.
The multistage fracturing intelligent control system has the beneficial effects that: the intelligent opening device is arranged in the multistage fracturing intelligent control system, the G-type sealing cylinder of the G-type sealing device of the downhole tool forms a bowl-shaped structure in the direction away from the downhole tool in the process of descending the intelligent opening device, and pumping liquid is positioned in the bowl-shaped structure in the process of pumping the downhole tool, so that the downhole tool can be well pushed to move forwards; the outer side wall of the G-shaped sealing cylinder is abutted with the inner wall of the shaft; the gap between the G-shaped sealing cylinder and the inner wall of the shaft is smaller, and pumping force is transmitted to the downhole tool through the G-shaped sealing cylinder, so that pumping efficiency is improved; after the downhole tool completes the opening of the sliding sleeve, the downhole tool can not move downhole any more, pumping liquid continuously applies pressure to the G-shaped sealing cylinder, and the G-shaped sealing cylinder is made of elastic materials. After the underground tool completes the opening of the sliding sleeve, the plugging tool does not need to be put in separately or additionally, so that the working efficiency is greatly improved.
Drawings
FIG. 1 is a schematic view of a G-type seal according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a second embodiment of a G-seal of the present invention;
FIG. 3 is an overall construction view of a support ring in the second embodiment;
FIG. 4 is a partial structural view of a support ring in the second embodiment
FIG. 5 is a schematic view of a third embodiment of a G-seal of the present invention;
FIG. 6 is a schematic view of an embodiment of an intelligent opening device according to the present invention;
FIG. 7 is a schematic diagram of a multi-stage fracturing intelligent control system according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a second embodiment of the multi-stage fracturing intelligent control system of the present invention;
fig. 9 is a schematic diagram of a third embodiment of the multi-stage fracturing intelligent control system of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. A G-shaped sealing cylinder, 2, a supporting ring, 21, a convex eave, 22, a gap, 3, a shearing ring, 4, a sliding sleeve component, 41 and an outer sliding sleeve, 42, inner sliding sleeve, 43, eyelet, 5, intelligent opening device main body, 51, opening device rear section, 52, opening device front section.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
A schematic structural diagram of a first embodiment of the G-seal of the present invention is shown in fig. 1.
A downhole tool G-type sealing device comprising: the G-shaped sealing cylinder 1 is made of elastic materials, one end of the G-shaped sealing cylinder 1 is in sealing connection with one end of the downhole tool, a bowl-shaped structure is formed in the direction away from the downhole tool, and the outer side wall of the G-shaped sealing cylinder 1 is abutted with the inner wall of the shaft.
The working principle and the beneficial effects of the embodiment are as follows: because the G-shaped sealing cylinder 1 forms a bowl-shaped structure in the direction away from the downhole tool, pumping liquid is positioned in the bowl-shaped structure in the process of pumping the downhole tool, so that the downhole tool can be well pushed to move forwards; the outer side wall of the G-shaped sealing cylinder 1 is abutted with the inner wall of the shaft; the gap between the G-shaped sealing cylinder and the inner wall of the shaft is smaller, and pumping force is transmitted to the downhole tool through the G-shaped sealing cylinder 1, so that pumping efficiency is improved. As shown in fig. 5, after the downhole tool performs the opening of the sliding sleeve, the downhole tool cannot move downhole any more, and at this time, the pumping liquid continuously applies pressure to the G-type sealing cylinder 1, and because the G-type sealing cylinder 1 is made of an elastic material, when the G-type sealing cylinder receives great pressure to generate plastic deformation to seal the gap between the downhole tool and the inner wall of the shaft, the sealing effect of the G-type sealing device on the shaft is realized. After the underground tool completes the opening of the sliding sleeve, the plugging tool does not need to be put in separately or additionally, so that the working efficiency is greatly improved.
Referring to fig. 2 to 4, in the second embodiment of the G-type sealing device of the present invention, the G-type sealing device further includes a support ring 2, wherein the support ring 2 is fixedly connected with the downhole tool and extends toward the inner wall of the wellbore along the radial direction of the downhole tool; the support ring 2 is located between the G-seal cartridge 1 and the downhole tool and has a spacing from the inner wall of the wellbore. Wherein, the support ring 2 is provided with a convex edge 21, and the convex edge 21 extends towards the G-shaped sealing cylinder 1 in a direction close to the inner wall of the shaft.
In this embodiment, as shown in fig. 3 and 4, the ledge 21 has a gap 22 in the radial direction of the downhole tool, and the ledge 21 abuts against the axial direction of the downhole tool after being deployed. Meanwhile, after being unfolded, the distance between the flange 21 and the inner wall of the shaft after being unfolded is smaller than the distance between the downhole tool and the inner wall of the shaft.
The support ring is used for supporting the deformation body of the G-shaped sealing cylinder 1 after being subjected to pressure. The ledge 21 extends towards the G-seal cartridge 1 in a direction close to the inner wall of the well bore, ensuring that the outer diameter of the ledge 21 is not larger than the outer diameter of the downhole tool, and ensuring that the downhole tool is not subjected to additional reaction forces during the downhole process.
In this embodiment, the distance between the flange 21 and the inner wall of the well bore after being unfolded as shown in fig. 8 is smaller than the distance between the downhole tool and the inner wall of the well bore. The support of the convex eave 21 to the G-shaped sealing cylinder 1 after being pressed and sealed is ensured, and the pressure bearing capacity of the G-shaped sealing cylinder 1 is improved; meanwhile, as the distance between the convex eave and the inner wall of the shaft is smaller, the sealing reliability is improved.
Referring to fig. 5, a schematic structural diagram of a third embodiment of the G-type sealing device of the present invention is different from the first embodiment in that: a shearing ring 3 is arranged between the G-shaped sealing cylinder 1 and the downhole tool, one side of the shearing ring 3 is embedded into the downhole tool, and the other side of the shearing ring 3 extends along the radial direction of the downhole tool to the G-shaped sealing cylinder 1 and is abutted with one end of the G-shaped sealing cylinder 1. In this embodiment, the other side of the shear ring 3 is embedded in one end of the G-type seal cartridge 1.
In the embodiment, the shearing ring 3 is arranged, so that the G-shaped sealing cylinder 1 cannot be deformed by pumping pressure to seal with the inner wall of the shaft in the process of pumping the downhole tool, and the pumping effect is ensured. Further, the shearing ring 3 can prevent the G-type seal cartridge 1 from sealing with the inner wall of the well bore in advance during pumping, and support the G-type seal cartridge 1 from leaking due to uneven progress during pumping, and at the same time, as shown in fig. 9, support the G-type seal cartridge 1 as a skeleton when the G-type seal cartridge 1 is compressed and opened during sealing.
Referring to fig. 6, a schematic structural diagram of an embodiment of an intelligent opening device of the present invention, an intelligent opening device includes: the intelligent opening device main body 5 and the G-shaped sealing device of the downhole tool are arranged, the intelligent opening device main body 5 is provided with an opening device rear section 51 and an opening device front section 52, and one end of the G-shaped sealing cylinder 1 is in sealing connection with the opening device rear section 51.
Because the intelligent opening device comprises the G-shaped sealing device of the downhole tool, the G-shaped sealing cylinder 1 of the G-shaped sealing device of the downhole tool forms a bowl-shaped structure in the direction away from the downhole tool, and pumping liquid is positioned in the bowl-shaped structure in the process of pumping the downhole tool, so that the downhole tool can be well pushed to move forwards; the outer side wall of the G-shaped sealing cylinder 1 is abutted with the inner wall of the shaft; the gap between the G-shaped sealing cylinder and the inner wall of the shaft is smaller, and pumping force is transmitted to the downhole tool through the G-shaped sealing cylinder 1, so that pumping efficiency is improved; after the downhole tool completes the opening of the sliding sleeve, the downhole tool can not move downhole any more, pumping liquid continuously applies pressure to the G-shaped sealing cylinder 1, and the G-shaped sealing cylinder 1 is made of elastic materials, so that when the G-shaped sealing cylinder is subjected to great pressure, plastic deformation is generated to seal the gap between the downhole tool and the inner wall of a shaft, and the sealing effect of the G-shaped sealing device on the shaft is realized. After the underground tool completes the opening of the sliding sleeve, the plugging tool does not need to be put in separately or additionally, so that the working efficiency is greatly improved.
Referring to fig. 7, a schematic structural diagram of an embodiment of a multi-stage fracturing intelligent control system of the present invention includes:
A plurality of mutually connected sliding sleeve assemblies 4, wherein the sliding sleeve assemblies comprise an outer sliding sleeve 41 and an inner sliding sleeve 42, and holes 43 penetrating the outer sliding sleeve 41 in the radial direction are formed in the circumferential direction of the outer sliding sleeve 41; 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 number of the intelligent opening devices is in one-to-one correspondence with the number of the sliding sleeve assemblies 4 (only one intelligent opening device and one sliding sleeve assembly are illustrated in the drawing), and the intelligent opening devices are located in the inner sliding sleeve 42 and are used for opening the holes 43. The downhole tool G-type sealing device in the intelligent opening device is the downhole tool G-type sealing device in the first embodiment.
The intelligent opening device is included in the multistage fracturing intelligent control system, the G-type sealing cylinder 1 of the G-type sealing device of the downhole tool forms a bowl-shaped structure in the direction away from the downhole tool in the process of descending the intelligent opening device, and pumping liquid is positioned in the bowl-shaped structure in the process of pumping the downhole tool, so that the downhole tool can be well pushed to move forwards; the outer side wall of the G-shaped sealing cylinder 1 is abutted with the inner wall of the shaft; the gap between the G-shaped sealing cylinder and the inner wall of the shaft is smaller, and pumping force is transmitted to the downhole tool through the G-shaped sealing cylinder 1, so that pumping efficiency is improved; after the downhole tool completes the opening of the sliding sleeve, the downhole tool can not move downhole any more, pumping liquid continuously applies pressure to the G-shaped sealing cylinder 1, and the G-shaped sealing cylinder 1 is made of elastic materials, so that when the G-shaped sealing cylinder is subjected to great pressure, plastic deformation is generated to seal the gap between the downhole tool and the inner wall of a shaft, and the sealing effect of the G-shaped sealing device on the shaft is realized. After the underground tool completes the opening of the sliding sleeve, the plugging tool does not need to be put in separately or additionally, so that the working efficiency is greatly improved.
The second structural schematic diagram of the embodiment of the multi-stage fracturing intelligent control system of the invention is shown in fig. 8, and compared with fig. 7, the difference is that the downhole tool G-type sealing device in the intelligent opening device is the downhole tool G-type sealing device in the second embodiment.
Referring to fig. 9, a schematic diagram of a third structure of an embodiment of the multi-stage fracturing intelligent control system of the present invention is different from fig. 7 in that the downhole tool G-type sealing device in the intelligent opening device is the downhole tool G-type sealing device in the third embodiment.
In the invention, the G-type sealing cylinder 1 is made of high-temperature resistant rubber so as to adapt to the environment of high temperature and high pressure underground. In a specific embodiment, the G-type seal cartridge 1 is a high temperature resistant, downhole soluble rubber, wherein the soluble rubber is the rubber that dissolves in the downhole environment.
The foregoing is only illustrative of the present invention and is not to be construed as limiting thereof, but rather as various modifications, equivalent arrangements, improvements, etc., within the spirit and principles of the present invention.
Claims (9)
1. The utility model provides a downhole tool G type sealing device which characterized in that includes:
The sealing device comprises a G-shaped sealing cylinder made of elastic materials, wherein one end of the G-shaped sealing cylinder is in sealing connection with one end of a downhole tool, a bowl-shaped structure is formed in the direction away from the downhole tool, and the outer side wall of the G-shaped sealing cylinder is abutted with the inner wall of a shaft;
The pumping liquid is positioned inside the bowl-shaped structure of the G-shaped sealing cylinder and used for pushing the G-shaped sealing cylinder to enable the downhole tool to move forwards when the downhole tool is pumped; when the downhole tool is no longer moving downhole, the pumping fluid is used to apply pressure to the G-type seal cartridge to plastically deform the G-type seal cartridge to seal the gap between the downhole tool and the inner wall of the wellbore.
2. The downhole tool G-type sealing apparatus of claim 1, further comprising: the support ring is fixedly connected with the downhole tool and extends along the radial direction of the downhole tool to the inner wall of the shaft; the support ring is located between the G-type seal cartridge and the downhole tool and has a spacing from the wellbore inner wall.
3. The downhole tool G-seal of claim 2 wherein the support ring has a ledge extending toward the G-seal cartridge in a direction proximate the inner wall of the wellbore.
4. A downhole tool G-type sealing device according to claim 3, wherein the ledge has a clearance in a radial direction of the downhole tool, the ledge being in axial abutment with the downhole tool after deployment.
5. The downhole tool G-type sealing device of claim 4, wherein the ledge is less spaced from the inner wall of the wellbore after deployment than the downhole tool.
6.A downhole tool G-seal according to any of claims 1-5, wherein a shear ring is arranged between the G-seal cartridge and the downhole tool, one side of the shear ring being embedded in the downhole tool, the other side of the shear ring extending radially of the downhole tool towards the G-seal cartridge and abutting one end of the G-seal cartridge.
7. The downhole tool G-seal of claim 6 wherein the other side of the shear ring is embedded into one end of the G-seal cartridge.
8. Intelligence opening device, its characterized in that includes:
An intelligent opening device main body and the G-shaped sealing device of the downhole tool according to any one of claims 1 to 7, wherein the intelligent opening device main body is provided with an opening device rear section and an opening device front section, and one end of the G-shaped sealing cylinder is in sealing connection with the opening device rear section.
9. Multistage fracturing intelligent control system, its characterized in that includes:
the sliding sleeve assembly comprises an outer sliding sleeve and an inner sliding sleeve, and holes penetrating through the outer sliding sleeve in the radial direction are formed in the circumference of the outer sliding sleeve; 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 8, wherein the number of intelligent opening devices corresponds one-to-one to the number of sliding sleeve assemblies, the intelligent opening device being located within the inner sliding sleeve for opening the aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110127145.8A CN112832705B (en) | 2021-01-29 | 2021-01-29 | G-shaped sealing device, intelligent opening device and multistage fracturing intelligent control system of downhole tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110127145.8A CN112832705B (en) | 2021-01-29 | 2021-01-29 | G-shaped sealing device, intelligent opening device and multistage fracturing intelligent control system of downhole tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112832705A CN112832705A (en) | 2021-05-25 |
| CN112832705B true CN112832705B (en) | 2024-05-03 |
Family
ID=75931025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110127145.8A Active CN112832705B (en) | 2021-01-29 | 2021-01-29 | G-shaped sealing device, intelligent opening device and multistage fracturing intelligent control system of downhole tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112832705B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5697439A (en) * | 1996-02-13 | 1997-12-16 | Kopfman; Joseph R. | Assembly and method for hanging elongated tubing in well bore |
| CN2688872Y (en) * | 2004-04-10 | 2005-03-30 | 中国石化中原油气高新股份有限公司采油四厂 | Choke |
| CN2708004Y (en) * | 2004-05-17 | 2005-07-06 | 天津大港油田长虹实业公司钻采机械配件厂 | Throw-in type filling valve for oil well pump |
| CN2777193Y (en) * | 2004-12-08 | 2006-05-03 | 新疆石油管理局采油工艺研究院 | Hydraulic seat sealing slip-free heat-resistant packer |
| CN103174399A (en) * | 2013-03-12 | 2013-06-26 | 中国海洋石油总公司 | Underground automatic control sliding sleeve device for multi-pressure-stratum system oil gas development |
| CN216691015U (en) * | 2021-01-29 | 2022-06-07 | 成都维锐泰达能源技术有限公司 | G-type sealing device, intelligent opening device and multi-stage fracturing intelligent control system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7510019B2 (en) * | 2006-09-11 | 2009-03-31 | Schlumberger Technology Corporation | Forming a metal-to-metal seal in a well |
-
2021
- 2021-01-29 CN CN202110127145.8A patent/CN112832705B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5697439A (en) * | 1996-02-13 | 1997-12-16 | Kopfman; Joseph R. | Assembly and method for hanging elongated tubing in well bore |
| CN2688872Y (en) * | 2004-04-10 | 2005-03-30 | 中国石化中原油气高新股份有限公司采油四厂 | Choke |
| CN2708004Y (en) * | 2004-05-17 | 2005-07-06 | 天津大港油田长虹实业公司钻采机械配件厂 | Throw-in type filling valve for oil well pump |
| CN2777193Y (en) * | 2004-12-08 | 2006-05-03 | 新疆石油管理局采油工艺研究院 | Hydraulic seat sealing slip-free heat-resistant packer |
| CN103174399A (en) * | 2013-03-12 | 2013-06-26 | 中国海洋石油总公司 | Underground automatic control sliding sleeve device for multi-pressure-stratum system oil gas development |
| CN216691015U (en) * | 2021-01-29 | 2022-06-07 | 成都维锐泰达能源技术有限公司 | G-type sealing device, intelligent opening device and multi-stage fracturing intelligent control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112832705A (en) | 2021-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2810098C (en) | Expandable casing patch | |
| CN1318728C (en) | Method of sealing an annulus | |
| GB2555231A (en) | Packing element back-up system incorporating iris mechanism | |
| CN110199086A (en) | Subsurface safety for cable deployment formula electric submersible pump | |
| EP2817480B1 (en) | System and method for enhanced sealing of well tubulars | |
| CN104169519A (en) | Annular barrier having flexible connection | |
| CN106639964A (en) | High leakproofness shoulder-protrusion resistant compression type packer | |
| CN113279725A (en) | Infinitely variable intelligent rotary dart sliding sleeve | |
| CN216691015U (en) | G-type sealing device, intelligent opening device and multi-stage fracturing intelligent control system | |
| CN204782929U (en) | Two -way pressure differential sliding sleeve of opening | |
| CN112832705B (en) | G-shaped sealing device, intelligent opening device and multistage fracturing intelligent control system of downhole tool | |
| MX2015000495A (en) | Pressure activated down hole systems and methods. | |
| RU2695734C1 (en) | Reinforced well combined composite seal for conductor and technical pipe string | |
| CN215408540U (en) | Pressure-testing tubing anchor | |
| CN205243462U (en) | Shallow layer cover leaks big latus rectum metal inflation reinforcing apparatus | |
| RU2475621C1 (en) | Double packer driven from rotation | |
| WO2014207085A1 (en) | Patch setting tool | |
| CN111779465A (en) | Soluble fracturing ball seat | |
| CN110485960A (en) | Pipeline compound lining device | |
| CN213330943U (en) | Expansion pipe for petroleum drilling | |
| CN109209317B (en) | Fracturing nipple and fracturing pipe string comprising same | |
| CN109281618A (en) | A kind of hydraulic type bottom expanding drill | |
| CN110107241B (en) | Underground pumping method | |
| US8925629B2 (en) | Down hole well tool with expansion tool | |
| CN109707357B (en) | Fracturing sliding sleeve with large drift diameter and intelligent ball throwing function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |