CN112177555A - Detachable wellhead reinforcing and protecting device - Google Patents
Detachable wellhead reinforcing and protecting device Download PDFInfo
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- CN112177555A CN112177555A CN202011135528.1A CN202011135528A CN112177555A CN 112177555 A CN112177555 A CN 112177555A CN 202011135528 A CN202011135528 A CN 202011135528A CN 112177555 A CN112177555 A CN 112177555A
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- 230000003014 reinforcing effect Effects 0.000 title abstract description 3
- 238000010276 construction Methods 0.000 claims abstract description 18
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 14
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 14
- 241001330002 Bambuseae Species 0.000 claims abstract description 14
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 14
- 239000011425 bamboo Substances 0.000 claims abstract description 14
- 230000002787 reinforcement Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 7
- 239000004917 carbon fiber Substances 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 238000005728 strengthening Methods 0.000 claims description 2
- 230000001012 protector Effects 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 11
- 239000004567 concrete Substances 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 9
- 239000011435 rock Substances 0.000 abstract description 9
- 239000002689 soil Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000011150 reinforced concrete Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 230000006378 damage Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 230000000284 resting effect Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 230000001976 improved effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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Classifications
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- 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
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
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)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
This application belongs to well head safety protection technical field, especially relates to a protector is consolidated to dismantled and assembled well head. At present, the concrete pouring and cementing mode formed by a concrete or reinforced concrete structure has the problems of complex construction procedures, higher cost and low utilization rate of a wellhead reinforcing and protecting device. The application provides a protector is consolidated to detachable well head utilizes the annular concatenation of the section of thick bamboo piece that protects of at least two to form, slides the gleitbretter through setting up in the card holds in the palm and carries out the connection and the fixing of adjacent section of thick bamboo piece, and convenient to detach and installation possess good portability, the promotion that is showing that the well head consolidates protector's reuse rate. The method is simple to manufacture, low in cost and capable of remarkably saving cost; casualties caused by collapse of the well mouth under certain special geological conditions can be effectively avoided; meanwhile, the condition that rock soil at the well mouth falls into the well to cause casualties can be avoided; this application equipment, dismantlement are simple, transportation convenient to carry, improve installation efficiency of construction by a wide margin.
Description
Technical Field
The application relates to a well head safety protection technical field especially relates to a protector is consolidated to dismantled and assembled well head.
Background
With the increasing development of national economy, industrial and civil buildings (abbreviated as civil and industrial buildings) and construction projects such as electric power, roads, railways and the like have formed unprecedented huge scales, but are accompanied by a series of construction safety risks. In part of engineering construction, engineering geological exploration, design and construction are essential important links and run through the whole process of the engineering construction. In order to further reduce the construction safety risk, the targeted protection work is required in the whole period of engineering construction.
For example, in the whole engineering construction period and in the engineering geological exploration process, a certain number of artificial exploratory wells are required to be arranged to obtain an original-state sample, a pile foundation is required to be adopted in the design process, in the construction process, a part of the pile foundation adopts an artificial hole forming mode, and in the well and hole construction process, due to the property of well mouth rock soil and/or the physical stress, huge potential safety hazards such as hole collapse, falling of soil (rock) bodies and injury of people and the like exist. Therefore, how to reduce and avoid the risks is a difficult problem in the process of geotechnical engineering investigation field work and construction, and plays a role in controlling the safety and quality of engineering construction.
The existing solution for the problems of hole collapse and soil (rock) body falling is to pour concrete and fix the well, increase the fixing performance of an annular wellhead through a concrete or steel-concrete structure and prevent the damage of hole collapse and soil (rock) body falling; however, the concrete or steel-concrete structure is difficult to be recycled after being formed once, and has the problems of complicated construction process, high cost and low utilization rate due to the fact that the concrete or steel-concrete structure is large in mass and inconvenient to migrate and transport.
Disclosure of Invention
The application provides a protector is consolidated to detachable well head to there is the problem that the construction process is complicated, the cost is higher and the utilization ratio is low in the protector is consolidated to the present well head of solution.
The technical scheme adopted by the application is as follows:
a removable wellhead reinforcement and protection device comprising:
the annular protective cylinder is formed by annularly splicing at least two protective cylinder sheets;
the placing part is arranged on the outer wall of the annular casing and used for placing the annular casing at a wellhead part;
connecting portion, connecting portion are including setting up every protect the slider on the section of thick bamboo piece inner wall, the slider includes the draw-in groove, will the draw-in groove with protect the fixed screw of section of thick bamboo piece, with draw-in groove fixed connection's card holds in the palm, follows the card holds in the palm sliding connection's gleitbretter, the gleitbretter can be followed the card holds in the palm and slides to the adjacent card on protecting the slider of section of thick bamboo piece and holds in the palm.
Optionally, the material of the cylinder protecting sheet is carbon fiber.
Optionally, the annular casing is formed by annularly splicing four casing pieces with the same size, and a hollow cylinder is formed after annular splicing.
Optionally, the placing part is arranged on the upper part of the outer wall of the annular casing, and the placing part is a circular ring placing piece fixedly connected with the annular casing.
Optionally, the connecting portion is located the lower part of the inner wall of the casing piece, the clamping groove is arranged at a certain preset distance from the lower edge of the casing piece, and the placing portion is arranged at a certain preset distance from the upper edge of the annular casing.
Optionally, the resting portion has the same structure as the connecting portion.
Optionally, the connecting portion further includes a slider slot, the slider slot is located in the card holder, and the slider slot is used for fixing the slider and the card holder.
Optionally, the connecting portion further includes a push-pull ball and a retaining ring, the push-pull ball is fixedly disposed on the slide, a push-pull ball retaining groove for mounting the push-pull ball is formed in the retaining bracket, the push-pull ball is exposed out of the push-pull ball retaining groove, the retaining ring is disposed on the retaining bracket, and the retaining ring is used for pushing the push-pull ball to the retaining ring and then fixing the push-pull ball in a buckled manner.
Optionally, the thickness of the cylinder protecting sheet is 2 cm.
Optionally, the clamping groove, the screw, the clamping support and the sliding sheet are made of stainless steel.
The technical scheme of the application has the following beneficial effects:
the utility model provides a protector is consolidated to detachable well head utilizes the annular concatenation of the casing piece of at least two to form, and convenient to detach and installation possess good portability, the promotion that is showing that protector is consolidated to the well head's reuse rate. The application has the following advantages as a whole:
1) the manufacturing is simple, the cost is low, the transportation and the carrying are convenient, and the cost is obviously saved;
2) the casualties caused by collapse of the well (hole) opening under certain special geological conditions can be effectively avoided;
3) the casualties caused by the falling of the soil (rock) body at the well (hole) opening into the well (hole) can be avoided;
4) the device is simple to assemble and disassemble and convenient to carry, and can improve the installation efficiency.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present application;
FIG. 2 is an enlarged view of a portion of the structure of FIG. 1;
FIG. 3 is an enlarged view of a portion of another embodiment;
FIG. 4 is a perspective view of a portion of another embodiment;
FIG. 5 is a schematic cross-sectional view of FIG. 4;
fig. 6 is a schematic structural diagram of a in fig. 5.
Illustration of the drawings:
wherein, 1-annular protective cylinder, 11-protective cylinder sheet, 2-placing part, 3-connecting part, 31-sliding bar, 311-clamping groove, 312-screw, 313-clamping holder, 314-sliding sheet, 315-sliding sheet clamping groove, 316-push-pull ball, 317-retaining ring, 318-push-pull ball clamping groove.
Detailed Description
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.
Referring to fig. 1, a schematic structural diagram of an embodiment of the present application is shown.
The application provides a pair of protector is consolidated to detachable well head, includes:
the annular pile casing 1 is formed by annularly splicing at least two pile casing pieces 11;
the placing part 2 is arranged on the outer wall of the annular casing 1, and the placing part 2 is used for placing the annular casing 1 at a wellhead part;
connecting portion 3, connecting portion 3 is including setting up every slide bar 31 on the inner wall of barrel casing piece 11, slide bar 31 includes draw-in groove 311, will draw-in groove 311 with the fixed screw 312 of barrel casing piece 11, with draw-in groove 311 fixed connection's card holds in the palm 313, follows card holds in the palm 313 sliding connection's gleitbretter 314, gleitbretter 314 can follow card holds in the palm 313 slides to the card on the slide bar 31 of adjacent barrel casing piece 11 and holds in the palm 313.
In this embodiment, the annular casing 1 is formed by annularly splicing at least two casing sheets 11, so that the complexity of the construction procedure of concrete pouring is effectively avoided, and portability is realized by annularly splicing. Through the technical scheme that the annular casing 1 is tightly attached to the inner wall of the wellhead, the placing part 2 is used for placing the wellhead and the connecting part 3 is used for annularly splicing the casing pieces 11, the beneficial effects of convenience in carrying, convenience in detachment and installation and capability of repeatedly utilizing and reducing cost are achieved. Generally speaking, the scene of industrial application is the well head promptly and is cylindrical well head, and in order to laminate well head inner wall, adopt size and well head assorted cyclic annular to protect a section of thick bamboo 1, cyclic annular protects a section of thick bamboo 1 and hugs closely well head inner wall, effectively prevents to collapse or ground and falls, further hoisting device's security.
At least two of the cylindrical protecting pieces 11 are annularly spliced to form a complete cylindrical annular protecting cylinder 1, illustratively, for convenience of industrial application and improvement of processing efficiency, the cylindrical protecting pieces 11 can be made into a plurality of pieces with equal size, for example, if the annular protecting cylinder 1 is annularly spliced by two cylindrical protecting pieces 11, the cylindrical protecting pieces 11 are made into a semi-cylindrical shape, and the two semi-cylinders are spliced to form a complete cylinder; if the annular cylinder protector 1 is annularly spliced by four cylinder protector sheets 11, the cylinder protector sheets 11 are made into 1/4 cylinders, the four 1/4 cylinders are spliced into a complete cylinder, and so on. In order to facilitate understanding of the technical solution of the present embodiment, fig. 1 shows a situation when the annular casing 1 is annularly spliced by four casing sheets 11. Fig. 1 is only used to explain and describe the technical solution and should not be understood as a limitation of the only solution of the present application.
The placing part 2 in this embodiment plays a primary role in placing the annular casing 1 on the wellhead to prevent the annular casing 1 from dropping or loosening. The placing part 2 is fixedly connected with the annular casing 1, and the annular casing 1 is not easy to fall off due to the supporting effect of the ground at the edge of the wellhead. The connecting portion 3 in the embodiment is clamped in the clamping holder 313 on the adjacent cylindrical protecting sheet 11 through the sliding piece 314, and plays a role of connecting the two adjacent cylindrical protecting sheets 11. After the single sliding sheet 314 slides, the sliding sheet can be simultaneously clamped and embedded in the clamping supports 313 of two adjacent cylinder protecting sheets 11, so that the connecting and fixing functions are achieved.
Optionally, the material of the barrel protecting sheet 11 is carbon fiber.
In this embodiment, in order to further improve the portability of this application, adopt carbon fiber material preparation to protect section of thick bamboo piece 11. Carbon fiber is a special fiber composed of carbon elements. The graphite fiber has the characteristics of high temperature resistance, friction resistance, electric conduction, heat conduction, corrosion resistance and the like, is fibrous and soft in appearance, can be processed into various fabrics, and has high strength and modulus along the fiber axis direction due to the preferred orientation of the graphite microcrystalline structure along the fiber axis. The carbon fibers have a low density and thus a high specific strength and a high specific modulus. The carbon fiber material has light weight and is convenient to transport and carry; meanwhile, the strength is high, the damage is not easy to occur, and the durability is good.
Optionally, the annular cylinder casing 1 is formed by annularly splicing four cylinder casing sheets 11 with the same size, and a hollow cylinder is formed after annular splicing.
Referring to fig. 1 and fig. 2, in this embodiment, the annular casing 1 is formed by annularly splicing four casing pieces 11 with the same size, each casing piece 11 occupies 1/4 of the whole annular casing 1, and in practical industrial application, since the casing pieces 11 can be split into four casing pieces 11, transportation and carrying are simple, and meanwhile, the installation process is relatively simple, and the optimization of the two is relatively balanced, namely, the convenience in carrying and the simplicity in installation.
Optionally, the placing part 2 is arranged on the upper part of the outer wall of the annular casing 1, and the placing part 2 is a circular ring placing piece fixedly connected with the annular casing 1.
The above example shows an embodiment of the resting portion 2, which is simple in structure and easy to implement, and the ring resting piece is naturally resting on the ground at the edge of the wellhead, and is very simple, convenient and rapid to install, and only needs to be inserted into the wellhead when the wellhead is actually arranged.
Optionally, the connecting portion 3 is located on the lower portion of the inner wall of the cylindrical protection sheet 11, the slot 311 is disposed at a certain preset distance from the lower edge of the cylindrical protection sheet 11, and the placing portion 2 is disposed at a certain preset distance from the upper edge of the annular cylindrical protection 1.
In this embodiment, for making the linkage effect of protecting a section of thick bamboo piece 11 better, set up connecting portion 3 in the lower part of protecting a section of thick bamboo piece 11 inner wall to put portion 2 cooperations with upper portion, connect fastening effect better, it can neglect to rock the displacement, is favorable to promoting the security of the device of this application, prevents that the not hard up behind the long-time use causes collapses or rock and soil and falls the hidden danger.
Alternatively, the placement portion 2 may have the same structure as the connection portion 3.
Referring to fig. 3 and 4, in the present embodiment, the first function of the placing part 2 is to place the annular casing 1 on a wellhead to prevent the annular casing 1 from dropping or loosening, the placing part 2 has the same structure as the connecting part 3, and due to the existence of the sliding strip 31, the requirement of the first function of the placing part 2 is also met, and meanwhile, the sliding strip 314 can be used to connect adjacent casing pieces 11, so as to further connect and fasten the casing pieces 11, so that the annular casing 1 has better integrity and is not easy to loosen.
In addition, in order to obtain better connection fixing and installation effects, the structure selection of the placing part 2 is the same as that of the connecting part 3, so that the problem that the annular casing 1 is placed on a wellhead is solved, meanwhile, due to the adoption of the structure the same as that of the connecting part 3, the sliding slide piece 314 is used for connecting and fixing the adjacent casing sheets 11, the annular casing 1 is more tightly fixed between the casing sheets 11, and the safety and the durability of the annular casing 1 are further improved. In fact, in order to make the shelving effect better, although the structure of the shelving part 2 is the same as that of the connecting part 3, the card support 313 of the shelving part 2 can be wider in design size, even if the contact area of the card support 313 and the wellhead ground is larger, so that the shelving effect is more stable and is not easy to deform. These technical solutions, which are only slightly different in size, belong to the inventive concept of the present application and are therefore to be considered as falling within the scope of the present application.
Optionally, the connecting portion 3 further includes a slider slot 315, the slider slot 315 is located in the card holder 313, and the slider slot 315 is used to fix the slider 314 and the card holder 313.
Referring to fig. 4-6, in the embodiment, the sliding-piece slot 315 is used to fix the sliding piece 314 and the card holder 313, and after long-term use, the sliding piece 314 still cannot move easily due to the limiting function of the sliding-piece slot 315, so that the connection effect of the sliding piece 314 is not reduced. The safety and the fastening of this application have further been promoted.
Optionally, the connecting portion 3 further includes a push-pull ball 316 and a retaining ring 317, the push-pull ball 316 is fixedly disposed on the sliding plate 314, a push-pull ball retaining groove 318 for mounting the push-pull ball 316 is disposed on the retaining bracket 313, the push-pull ball 316 is exposed from the push-pull ball retaining groove 318, the retaining ring 317 is disposed on the retaining bracket 313, and the retaining ring 317 is used for pushing the push-pull ball 316 to the retaining ring 317 and then performing snap-fit fixation.
Referring to fig. 2, 4-6, in the present embodiment, in order to facilitate the handheld operation, a push-pull ball 316 is disposed on the sliding piece 314, so that the sliding operation is simple and easy; meanwhile, the push-pull ball 316 is buckled and fixed by the retaining ring 317, so that the stability and the safety of the device are improved.
Optionally, the thickness of the cylinder guard sheet 11 is 2 cm.
In this embodiment, the thickness of the cylinder protecting sheet 11 should not be too thin and too thick, and too thin is likely to cause insufficient strength, easy damage and short service life, and too thick is not favorable for transportation and portability. The protective cylinder sheet 11 with the thickness of 2cm is balanced to meet the requirement of practical industrial application.
Optionally, the material of the locking slot 311, the screw 312, the locking bracket 313 and the sliding piece 314 is stainless steel.
In this embodiment, the material of card slot 311, screw 312, card support 313 and gleitbretter 314 is set for the stainless steel, is favorable to strengthening the outdoor performance of this application device. The stainless steel material has low cost and is not easy to rust, thereby improving the repeated utilization rate and the durability and simultaneously meeting the requirement of certain strength.
The utility model provides a protector is consolidated to detachable well head utilizes 11 annular concatenations of a section of thick bamboo pieces that protect of at least two to form, and convenient to detach and installation possess good portability, the promotion that is showing that the well head consolidates protector's reuse rate. The application has a plurality of advantages as a whole: the manufacturing is simple, the cost is low, the transportation and the carrying are convenient, and the cost is obviously saved; secondly, casualties caused by collapse of well (hole) openings under certain special geological conditions can be effectively avoided; thirdly, casualties caused by the fact that soil (rock) bodies at the well (hole) mouth fall into the well (hole) can be avoided; and fourthly, the device is simple to assemble and disassemble and convenient to carry, and can improve the installation efficiency.
The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.
Claims (10)
1. A protective device is consolidated to detachable well head which characterized in that includes:
the annular protective cylinder is formed by annularly splicing at least two protective cylinder sheets;
the placing part is arranged on the outer wall of the annular casing and used for placing the annular casing at a wellhead part;
connecting portion, connecting portion are including setting up every protect the slider on the section of thick bamboo piece inner wall, the slider includes the draw-in groove, will the draw-in groove with protect the fixed screw of section of thick bamboo piece, with draw-in groove fixed connection's card holds in the palm, follows the card holds in the palm sliding connection's gleitbretter, the gleitbretter can be followed the card holds in the palm and slides to the adjacent card on protecting the slider of section of thick bamboo piece and holds in the palm.
2. The removable wellhead reinforcement and protection device according to claim 1, wherein the material of the casing sheet is carbon fiber.
3. The removable wellhead reinforcement and protection device according to claim 1, wherein the annular casing is formed by annularly splicing four casing pieces with the same size, and the annular spliced casing pieces are formed into a hollow cylinder.
4. The removable wellhead reinforcement and protection device according to claim 1, wherein the placement part is arranged on the upper part of the outer wall of the annular casing, and the placement part is a circular ring placement piece fixedly connected with the annular casing.
5. The removable wellhead reinforcement and protection device according to claim 1, wherein the connection portion is located at a lower portion of an inner wall of the casing plate, the clamping groove is arranged at a predetermined distance from a lower edge of the casing plate, and the placing portion is arranged at a predetermined distance from an upper edge of the annular casing.
6. The removable wellhead reinforcement and protection device according to claim 1, wherein the rest is of the same construction as the connection section.
7. The removable wellhead reinforcement and protection device of claim 1, wherein the connection portion further comprises a slip sheet slot in the card holder, the slip sheet slot for securing the slip sheet with the card holder.
8. The removable wellhead strengthening and protecting device according to claim 1, wherein the connecting portion further comprises a push-pull ball and a retaining ring, the push-pull ball is fixedly disposed on the sliding piece, the retaining ring is provided with a push-pull ball retaining groove for mounting the push-pull ball, the push-pull ball is exposed out of the push-pull ball retaining groove, the retaining ring is disposed on the retaining ring, and the retaining ring is used for pushing the push-pull ball to the retaining ring and then performing fastening and fixing.
9. The removable wellhead reinforcement and protection device of claim 1, wherein the thickness of the casing sheet is 2 cm.
10. The removable wellhead reinforcement and protection device of claim 1, wherein the clamping groove, the screw, the clamping support and the slip sheet are all made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011135528.1A CN112177555B (en) | 2020-10-22 | 2020-10-22 | Detachable wellhead reinforcing and protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011135528.1A CN112177555B (en) | 2020-10-22 | 2020-10-22 | Detachable wellhead reinforcing and protecting device |
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| Publication Number | Publication Date |
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| CN112177555A true CN112177555A (en) | 2021-01-05 |
| CN112177555B CN112177555B (en) | 2024-06-11 |
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| CN202011135528.1A Active CN112177555B (en) | 2020-10-22 | 2020-10-22 | Detachable wellhead reinforcing and protecting device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113551573A (en) * | 2021-08-30 | 2021-10-26 | 贵州建工集团第一建筑工程有限责任公司 | Blast hole anti-blocking device and construction method |
| CN113982519A (en) * | 2021-11-12 | 2022-01-28 | 杨旺军 | Device capable of being mounted and dismounted fast at well head of subway station under construction |
| CN114590504A (en) * | 2022-04-07 | 2022-06-07 | 闫帅 | Garbage can |
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