CN112832705A - Underground tool G-shaped sealing device, intelligent opening device and multistage fracturing intelligent control system - Google Patents
Underground tool G-shaped sealing device, intelligent opening device and multistage fracturing intelligent control system Download PDFInfo
- Publication number
- CN112832705A CN112832705A CN202110127145.8A CN202110127145A CN112832705A CN 112832705 A CN112832705 A CN 112832705A CN 202110127145 A CN202110127145 A CN 202110127145A CN 112832705 A CN112832705 A CN 112832705A
- Authority
- CN
- China
- Prior art keywords
- downhole tool
- shaped sealing
- sliding sleeve
- tool
- wall
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 128
- 239000013013 elastic material Substances 0.000 claims abstract description 7
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000005086 pumping Methods 0.000 abstract description 41
- 238000000034 method Methods 0.000 abstract description 17
- 230000008569 process Effects 0.000 abstract description 15
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 7
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 7
- 241001330002 Bambuseae Species 0.000 abstract description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 7
- 239000011425 bamboo Substances 0.000 abstract description 7
- 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
- 239000007788 liquid Substances 0.000 description 14
- 230000009286 beneficial effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 10
- 238000010008 shearing Methods 0.000 description 8
- 239000000306 component Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
Images
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 Devices (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention relates to the field of petroleum underground construction, in particular to an underground tool G-shaped sealing device, an intelligent opening device and a multistage intelligent fracturing control system, wherein the underground tool G-shaped sealing device comprises: the sealed section of thick bamboo of G type that forms by elastic material, the one end of the sealed section of thick bamboo of G type and the one end sealing connection of downhole tool to form bowl form structure in the direction of keeping away from downhole tool, the lateral wall and the pit shaft inner wall butt of the sealed section of thick bamboo of G type. In the process of opening the underground sliding sleeve, the G-shaped sealing cylinder is used for pumping the underground tool; after the underground tool performs opening of the sliding sleeve, the underground tool cannot move underground, and when the G-shaped sealing cylinder is subjected to great pressure to generate plastic deformation to seal a gap between the underground tool and the inner wall of the shaft, the sealing effect of the G-shaped sealing device on the shaft is realized. After the underground tool finishes the opening of the sliding sleeve, the plugging tool does not need to be independently or additionally put in, and the operation efficiency is greatly improved.
Description
Technical Field
The invention relates to the field of petroleum underground construction, in particular to an underground tool G-shaped sealing 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 core components, and the opening mode of the sliding sleeve has great influence on the structure of a shaft and ground equipment, and the time and 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, sliding sleeves have been developed, in which a flexible ball seat is provided, the ball seat 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.
With the development of 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, and the electric actuating mechanism opens the sliding sleeve through electric control.
The downhole tool needs to independently release a downhole plugging tool after the sliding sleeve is opened so as to realize sealing of the shaft.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a G-shaped sealing device for pumping and sealing a shaft of a downhole tool, so as to improve the efficiency of shaft sealing of pumping and opening by a sliding sleeve.
The technical scheme for solving the technical problems is as follows:
a downhole tool G-style seal comprising: the sealing device comprises a G-shaped sealing cylinder made of elastic materials, wherein 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 a 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 far away from the downhole tool, the pumping liquid is filled in the bowl-shaped structure in the process of pumping the downhole tool, and 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, a gap between the G-shaped sealing cylinder and the inner wall of the shaft is small, and pumping force is transmitted to the downhole tool through the G-shaped sealing cylinder, so that the pumping efficiency is improved; after the underground tool performs opening of the sliding sleeve, the underground tool can not move underground any more, and at the moment, pumping liquid continuously applies pressure to the G-shaped sealing cylinder. After the underground tool finishes the opening of the sliding sleeve, the plugging tool does not need to be independently or additionally put in, and the operation efficiency is greatly improved.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, still include: the support ring is fixedly connected with the downhole tool and extends to the inner wall of the shaft along the radial direction of the downhole tool; the support ring is located between the G-shaped sealing cylinder and the downhole tool and has a distance with the inner wall of the well bore.
The beneficial effect of adopting the further scheme is that: the support ring is used for supporting a deformation body of the G-shaped sealing cylinder after being subjected to pressure.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the support ring has a protruding eave that extends toward the G-type seal cartridge in a direction that is close to the inner wall of the wellbore.
The beneficial effect of adopting the further scheme is that: the convex 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 convex eaves is not larger than that of the downhole tool, and the downhole tool cannot receive extra reaction force in the process of going into the well.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the convex eaves have a gap in the radial direction of the downhole tool, and the convex eaves are axially abutted with the downhole tool after being unfolded.
The beneficial effect of adopting the further scheme is that: the clearance of protruding eaves ensures that also along with expanding with protruding eaves after the G type sealed cylinder is compressed, and the axial butt of protruding eaves and downhole tool after the expansion, downhole tool provides the support for protruding eaves.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the distance between the expanded convex eaves and the inner wall of the shaft is smaller than the distance between the downhole tool and the inner wall of the shaft.
The beneficial effect of adopting the further scheme is that: the support of the G-shaped sealing cylinder after the convex eaves are pressed and sealed is ensured, and the pressure bearing capacity of the G-shaped sealing cylinder is improved; meanwhile, the distance between the convex eaves and the inner wall of the shaft is small, so that the sealing reliability is improved.
On the basis of the technical scheme, the invention can be further 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 towards the G-shaped sealing cylinder in the radial direction of the downhole tool and is abutted against one end of the G-shaped sealing cylinder.
The beneficial effect of adopting the further scheme is that: through setting up the shear ring for in the in-process of pumping downhole tool, the sealed section of thick bamboo of G type can not receive pumping pressure and warp and cause and seal with the pit shaft inner wall, ensures the effect of pumping.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the other side of the shearing ring is embedded into one end of the G-shaped sealing cylinder.
The beneficial effect of adopting the further scheme is that: the shear ring can prevent the effect that the G-shaped sealing cylinder is sealed with the inner wall of the shaft in advance in the pumping process, supports the G-shaped sealing cylinder when the pump is advanced to prevent the uneven advancing from causing liquid leakage, and simultaneously supports the G-shaped sealing cylinder as a framework when the G-shaped sealing cylinder is pressed and opened in the sealing process.
The present invention also provides an intelligent opening device, comprising:
the intelligent opening device comprises an intelligent opening device main body and the underground tool G-shaped sealing device, 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 hermetically connected with the opening device rear section.
The intelligent opening device has the beneficial effects that: the intelligent opening device comprises the underground tool G-shaped sealing device, a G-shaped sealing cylinder of the underground tool G-shaped sealing device forms a bowl-shaped structure in the direction far away from the underground tool, and the pumping liquid is positioned in the bowl-shaped structure in the process of pumping the underground tool, so that the underground 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, and the pumping force is transmitted to the downhole tool through the G-shaped sealing cylinder, so that the pumping efficiency is improved; after the underground tool performs opening of the sliding sleeve, the underground tool can not move underground any more, and at the moment, pumping liquid continuously applies pressure to the G-shaped sealing cylinder. After the underground tool finishes the opening of the sliding sleeve, the plugging tool does not need to be independently or additionally put in, and the operation efficiency is greatly improved.
The invention 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 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, a G-shaped sealing cylinder of a G-shaped sealing device of the downhole tool forms a bowl-shaped structure in the direction far away from the downhole tool in the process of descending the intelligent opening device, and the 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, and the pumping force is transmitted to the downhole tool through the G-shaped sealing cylinder, so that the pumping efficiency is improved; after the underground tool performs opening of the sliding sleeve, the underground tool can not move underground any more, and at the moment, pumping liquid continuously applies pressure to the G-shaped sealing cylinder. After the underground tool finishes the opening of the sliding sleeve, the plugging tool does not need to be independently or additionally put in, and the operation efficiency is greatly improved.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of a G-type sealing device according to the present invention;
FIG. 2 is a schematic structural view of a second embodiment of a G-type sealing device according to the present invention;
FIG. 3 is an overall configuration view of the support ring in the second embodiment;
FIG. 4 is a partial structure view of the support ring in the second embodiment
FIG. 5 is a schematic structural view of a third embodiment of a G-type seal of the present invention;
FIG. 6 is a schematic structural diagram of an embodiment of an intelligent opening device according to the present invention;
FIG. 7 is a schematic structural diagram of an embodiment of the intelligent control system for multi-stage fracturing of the present invention;
FIG. 8 is a schematic structural diagram of a second embodiment of the intelligent control system for multi-stage fracturing according to the present invention;
fig. 9 is a schematic diagram of a third structure of the multi-stage intelligent fracturing control system of the invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the device comprises a G-shaped sealing cylinder, 2, a support ring, 21, a convex brim, 22, a gap, 3, a shearing ring, 4, a sliding sleeve assembly, 41, an outer sliding sleeve, 42, an inner sliding sleeve, 43, an eyelet, 5, an intelligent opening device main body, 51, an opening device rear section and 52, an opening device front section.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Fig. 1 is a schematic structural view of a first embodiment of the G-type sealing device of the present invention.
A downhole tool G-style seal comprising: the sealed section of thick bamboo 1 of G type that forms by elastic material, the sealed one end of section of thick bamboo 1 of G type and the one end sealing connection of instrument in the pit to form bowl form structure in the direction of keeping away from instrument in the pit, the lateral wall and the pit shaft inner wall butt of the sealed section of thick bamboo 1 of G type.
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 far away from the downhole tool, the pumping liquid is in the bowl-shaped structure in the pumping process of the downhole tool, and the downhole tool can be well pushed to move forwards; the outer side wall of the G-shaped sealing cylinder 1 is abutted against the inner wall of the shaft; a gap between the G-shaped sealing cylinder and the inner wall of the shaft is small, pumping force is completely transmitted to the underground tool through the G-shaped sealing cylinder 1, and pumping efficiency is improved. As shown in fig. 5, after the downhole tool performs the opening of the sliding sleeve, the downhole tool can not move downhole any more, and at this time, the pumping liquid continuously applies pressure to the G-shaped sealing cylinder 1, and since the G-shaped sealing cylinder 1 is made of an elastic material, when the G-shaped sealing cylinder is subjected to large pressure, plastic deformation is generated to seal a gap between the downhole tool and the inner wall of the wellbore, so that the sealing effect of the G-shaped sealing device on the wellbore is realized. After the underground tool finishes the opening of the sliding sleeve, the plugging tool does not need to be independently or additionally put in, and the operation efficiency is greatly improved.
Referring to fig. 2 to 4, in the present embodiment, the second sealing device of the G-type further includes a support ring 2, where the support ring 2 is fixedly connected to the downhole tool and extends to the inner wall of the wellbore along the radial direction of the downhole tool; the support ring 2 is positioned between the G-shaped sealing cylinder 1 and the downhole tool and has a distance with the inner wall of the well bore. Wherein, the support ring 2 has a convex eave 21, and the convex eave 21 extends towards the G-shaped sealing cylinder 1 in the direction close to the inner wall of the shaft.
In the present embodiment, as shown in fig. 3 and 4, the protruding eaves 21 have a gap 22 in the radial direction of the downhole tool, and the protruding eaves 21 are expanded to abut against the downhole tool in the axial direction. Meanwhile, after being unfolded, the distance between the unfolded convex eaves 21 and the inner wall of the shaft is smaller than the distance between the downhole tool and the inner wall of the shaft.
The support ring is used for supporting a deformation body of the G-shaped sealing cylinder 1 after being subjected to pressure. The convex eaves 21 extend towards the G-shaped sealing cylinder 1 in the direction close to the inner wall of the shaft, so that the outer diameter of the convex eaves 21 is not larger than that of the downhole tool, and the downhole tool is not subjected to additional reaction force in the process of going down the well.
In this embodiment, as shown in fig. 8, the distance between the extended protruding eave 21 and the inner wall of the shaft is smaller than the distance between the downhole tool and the inner wall of the shaft. The support of the convex eaves 21 to the G-shaped sealing cylinder 1 after pressure sealing is ensured, and the pressure bearing capacity of the G-shaped sealing cylinder 1 is improved; meanwhile, the distance between the convex eaves and the inner wall of the shaft is small, so that 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 second embodiment in that: a shearing ring 3 is arranged between the G-shaped sealing barrel 1 and a downhole tool, one side of the shearing ring 3 is embedded into the downhole tool, and the other side of the shearing ring 3 radially extends towards the G-shaped sealing barrel 1 in the downhole tool and is abutted against one end of the G-shaped sealing barrel 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 this embodiment, by providing the shear ring 3, the G-shaped seal cylinder 1 is not deformed by pumping pressure to seal with the inner wall of the wellbore during pumping of the downhole tool, thereby ensuring the pumping effect. Further, the shear ring 3 can prevent the G-shaped sealing cylinder 1 from sealing with the inner wall of the well bore in advance in the pumping process, support the G-shaped sealing cylinder 1 to prevent liquid leakage caused by uneven forward movement when the pump is moved forward, and simultaneously support the G-shaped sealing cylinder 1 as a framework when the G-shaped sealing cylinder 1 is pressed and expanded in sealing, as shown in fig. 9.
Referring to fig. 6, a schematic structural diagram of an embodiment of an intelligent opening device of the present invention includes: the intelligent opening device comprises an intelligent opening device main body 5 and the underground tool G-shaped sealing device, wherein 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 a G-shaped sealing cylinder 1 is hermetically connected with the opening device rear section 51.
Because the intelligent opening device comprises the underground tool G-shaped sealing device, the G-shaped sealing cylinder 1 of the underground tool G-shaped sealing device forms a bowl-shaped structure in the direction away from the underground tool, and the pumping liquid is positioned in the bowl-shaped structure in the process of pumping the underground tool, so that the underground tool can be well pushed to move forwards; the outer side wall of the G-shaped sealing cylinder 1 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, and the pumping force is transmitted to the downhole tool through the G-shaped sealing cylinder 1, so that the pumping efficiency is improved; after the underground tool performs opening of the sliding sleeve, the underground tool can not move towards the underground, at the moment, pumping liquid continuously applies pressure to the G-shaped sealing cylinder 1, the G-shaped sealing cylinder 1 is made of elastic materials, and when the G-shaped sealing cylinder is subjected to large pressure to generate plastic deformation to seal a gap between the underground tool and the inner wall of the shaft, the sealing effect of the G-shaped sealing device on the shaft is realized. After the underground tool finishes the opening of the sliding sleeve, the plugging tool does not need to be independently or additionally put in, and the operation efficiency is greatly improved.
Referring to fig. 7, a schematic structural diagram of an embodiment of the multi-stage intelligent fracturing control system of the present invention includes:
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 sliding sleeve 42 is fixedly sleeved on the inner wall of the outer sliding sleeve 41 and seals the hole 43.
And the intelligent opening devices, the number of which corresponds to the number of the sliding sleeve assemblies 4 one by one (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 for opening the eyelets 43. The G-type sealing device of the downhole tool in the intelligent opening device is the G-type sealing device of the downhole tool in the first embodiment.
The intelligent opening device is arranged in the multistage intelligent fracturing control system, a G-shaped sealing cylinder 1 of a G-shaped sealing device of the downhole tool forms a bowl-shaped structure in the direction far away from the downhole tool in the process of descending the intelligent opening device, and the 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 against the inner wall of the shaft; the gap between the G-shaped sealing cylinder and the inner wall of the shaft is small, and the pumping force is transmitted to the downhole tool through the G-shaped sealing cylinder 1, so that the pumping efficiency is improved; after the underground tool performs opening of the sliding sleeve, the underground tool can not move towards the underground, at the moment, pumping liquid continuously applies pressure to the G-shaped sealing cylinder 1, the G-shaped sealing cylinder 1 is made of elastic materials, and when the G-shaped sealing cylinder is subjected to large pressure to generate plastic deformation to seal a gap between the underground tool and the inner wall of the shaft, the sealing effect of the G-shaped sealing device on the shaft is realized. After the underground tool finishes the opening of the sliding sleeve, the plugging tool does not need to be independently or additionally put in, and the operation efficiency is greatly improved.
Referring to fig. 8, a schematic structural diagram of a second embodiment of the multi-stage intelligent fracturing control system is shown, and compared with fig. 7, the difference is that the G-type sealing device of the downhole tool in the intelligent opening device is the G-type sealing device of the downhole tool in the second embodiment.
Referring to fig. 9, a schematic structural diagram of a third embodiment of the multi-stage intelligent fracturing control system is shown, and compared with fig. 7, the difference is that the G-type sealing device of the downhole tool in the intelligent opening device is the G-type sealing device of the downhole tool in the third embodiment.
In the invention, the G-shaped sealing cylinder 1 is made of high-temperature-resistant rubber so as to adapt to the underground high-temperature and high-pressure environment. In a specific embodiment, the G-type sealing cylinder 1 is a high temperature resistant soluble rubber that is soluble downhole, wherein the soluble rubber is that the rubber dissolves in the downhole environment.
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 (9)
1. A downhole tool G-seal, comprising:
the sealing device comprises a G-shaped sealing cylinder made of elastic materials, wherein 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 a shaft.
2. The downhole tool G-type seal of claim 1, further comprising: the support ring is fixedly connected with the downhole tool and extends to the inner wall of the shaft along the radial direction of the downhole tool; the support ring is located between the G-shaped sealing cylinder and the downhole tool and has a distance with the inner wall of the well bore.
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 wellbore inner wall.
4. The downhole tool type-G seal according to claim 3, wherein the eave has a gap in a radial direction of the downhole tool, the eave expanding to abut axially of the downhole tool.
5. The downhole tool type-G sealing device according to claim 4, wherein the distance between the flared brim and the inner wall of the wellbore is smaller than the distance between the downhole tool and the inner wall of the wellbore.
6. The downhole tool G-seal according to any one of claims 1 to 5, wherein a shear ring is provided between the G-seal cartridge and the downhole tool, one side of the shear ring being embedded in the downhole tool and the other side of the shear ring extending radially towards the G-seal cartridge in the downhole tool 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 in one end of the G-seal cartridge.
8. Intelligence opening device, its characterized in that includes:
the intelligent opening device body and the G-shaped sealing device of the underground tool of any one of claims 1 to 7, wherein the intelligent opening device 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 connected with the opening device rear section in a sealing mode.
9. 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 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, the number of intelligent opening devices corresponding 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 true CN112832705A (en) | 2021-05-25 |
| CN112832705B 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 (7)
| 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 |
| US20080061510A1 (en) * | 2006-09-11 | 2008-03-13 | Schlumberger Technology Corporation | Forming a metal-to-metal seal in a well |
| 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 |
-
2021
- 2021-01-29 CN CN202110127145.8A patent/CN112832705B/en active Active
Patent Citations (7)
| 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 |
| US20080061510A1 (en) * | 2006-09-11 | 2008-03-13 | Schlumberger Technology Corporation | Forming a metal-to-metal seal in a well |
| 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 |
|---|---|
| CN112832705B (en) | 2024-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105484695A (en) | Mechanical hydraulic double-acting expansion device suitable for expansion tube drilling | |
| BR112013018308A2 (en) | system and method for lining a borehole | |
| CN205605160U (en) | Formula of breaking tail pipe blanking plug | |
| NO341833B1 (en) | Procedure for creating an annular barrier down into a well | |
| CN216691015U (en) | G-type sealing device, intelligent opening device and multi-stage fracturing intelligent control system | |
| CN104169519A (en) | Annular barrier having flexible connection | |
| CN107724993B (en) | It is a kind of can desealed water-swelling packer application method | |
| US9033056B2 (en) | Pressure activated down hole systems and methods | |
| CN109707358B (en) | Fracturing string and fracturing method thereof | |
| MX2015000495A (en) | Pressure activated down hole systems and methods. | |
| CN104563955A (en) | Steel pipe hydraulic expansion type external casing packer | |
| CN116446819A (en) | Well packer and method for forming underground water circulation flow field based on same | |
| CN205243462U (en) | Shallow layer cover leaks big latus rectum metal inflation reinforcing apparatus | |
| CN215408540U (en) | Pressure-testing tubing anchor | |
| CN105178912A (en) | Bypass valve for drilling tools | |
| CN109763784B (en) | Split bridge plug hydraulic setting tool and setting method thereof | |
| US8230926B2 (en) | Multiple stage cementing tool with expandable sealing element | |
| CN104563954A (en) | Steel pipe expansion recovery type external casing packer | |
| CN112832705A (en) | Underground tool G-shaped sealing device, intelligent opening device and multistage fracturing intelligent control system | |
| RU2475621C1 (en) | Double packer driven from rotation | |
| CN202914019U (en) | Packer seat sealing mechanism for coiled tubing | |
| CN207004477U (en) | Solvable bridging plug staged fracturing tool | |
| CN107989568B (en) | A kind of multistage can desealed water-swelling packer and method | |
| CN112096339A (en) | Automatic packing device for casing | |
| WO2014207085A1 (en) | Patch setting tool |
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 |