CN108979559B - Steel sleeve connecting device - Google Patents
Steel sleeve connecting device Download PDFInfo
- Publication number
- CN108979559B CN108979559B CN201811100741.1A CN201811100741A CN108979559B CN 108979559 B CN108979559 B CN 108979559B CN 201811100741 A CN201811100741 A CN 201811100741A CN 108979559 B CN108979559 B CN 108979559B
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- Prior art keywords
- steel
- steel sleeve
- sleeve
- centralizer
- section
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 115
- 239000010959 steel Substances 0.000 title claims abstract description 115
- 238000005260 corrosion Methods 0.000 claims abstract description 20
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 abstract description 18
- 238000009434 installation Methods 0.000 abstract description 16
- 238000007789 sealing Methods 0.000 abstract description 14
- 230000007797 corrosion Effects 0.000 abstract description 5
- 239000010410 layer Substances 0.000 abstract 3
- 239000011241 protective layer Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 12
- 230000006872 improvement Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009933 burial Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000004804 winding Methods 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/08—Casing joints
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1042—Elastomer protector or centering 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a steel sleeve connecting device which comprises a steel sleeve, a pre-installed heat shrinkage layer, a pre-installed PE pipe, a sleeve connecting piece, a pre-installed heat shrinkage layer and a pre-installed PE pipe, wherein the pre-installed heat shrinkage layer and the pre-installed PE pipe are pre-installed on the steel sleeve, and only a small part of empty space is reserved for installation after the steel sleeve is transported to a site, so that the installation time of a temperature-resistant insulating protective layer can be greatly saved, and the multiple functions of deep well grounding electrode steel sleeve section lowering installation, temperature resistance, insulation, corrosion resistance, sealing, centering and the like are satisfied.
Description
Technical Field
The invention relates to the technical field of direct current transmission engineering grounding, in particular to a steel sleeve connecting device.
Background
The direct current grounding electrode is used as an important component of direct current transmission engineering, and the conventional land grounding electrode technology comprises a horizontal grounding electrode and a vertical grounding electrode. The existing grounding electrode has the defects of large occupied area, difficult site selection, large influence on the shallow environment around the electrode site and the like. The deep well grounding electrode technology can effectively avoid the problems, but the deep well has the problems of too large borehole burial depth, too small aperture, easy hole collapse of the borehole, high sealing and protecting difficulty of the insulating section and the like. In order to ensure the normal lowering of the subsequent electric equipment installation after the deep well drilling is completed, a steel sleeve wall is required to be lowered, in order to introduce direct current into a deep stratum through a feed rod to prevent ground from flowing, the steel sleeve and the ground stratum are in direct contact layers, insulating materials are required to be used for filling the feed rod and the steel sleeve, and meanwhile, the upper part of the steel sleeve is required to be set to be an insulating section; meanwhile, continuous temperature rise change can be generated in the process that direct current passes through a feed system, in order to prevent the insulation effect from being influenced by the temperature rise change, an insulation temperature resistant layer is required to be arranged on the outer wall layer of the steel sleeve, and as the steel sleeve is placed in a segmented mode, a sealing protection device is required to be arranged when the insulation layers on the outer sides of the steel sleeve are connected in a segmented mode, and therefore the normal insulation temperature resistant effect can be guaranteed under the action of external force through segmented connection points of the insulation segments; friction damage can be generated between the steel sleeve and the well wall in the process of lowering the steel sleeve, so that forced centering measures are needed to be adopted to prevent the insulating temperature-resistant layer from being scratched and worn.
The casing protector is commonly used in the drilling or exploitation process in the technical field of petroleum and coal, and mainly protects casing from damage and damage, and the existing temperature-resistant insulating layer or casing protector is single in main protection function and is often manufactured into a finished product by factories to be disposable. In the deep well grounding electrode, because the deep well has larger burial depth, the steel sleeve needs to be installed in a sectional manner, so that a temperature-resistant insulating measure suitable for step-by-step installation is needed, and a sufficient sealing protection device is arranged at a connecting point. Meanwhile, in the deep well grounding electrode, the steel sleeve protection layer must be provided with a centering clamping position in the process of lowering, so that the protection layer is prevented from being scratched and worn by the wall of the drilling hole in the process of lowering.
In conclusion, in deep well grounding electrode test engineering, a protection measure capable of enabling the steel sleeve to be temperature-resistant and insulated is designed for the deep well insulation section, and meanwhile the protection measure can be suitable for step-by-step lowering of the steel sleeve, so that enough sealing centering measures are available when the temperature-resistant insulation layers of the steel sleeve are connected, and the protection measure has important significance for installation of the deep well grounding electrode and breakthrough of engineering difficulties.
Disclosure of Invention
Based on the above, the invention aims to provide the steel sleeve connecting device suitable for the temperature-resistant insulation protection of the deep well grounding electrode steel sleeve, which can be installed when the steel sleeve is lowered step by step, and has the effects of corrosion resistance, temperature resistance, insulation, sealing, centering and the like.
A steel bushing connection device comprising:
The steel sleeve comprises at least two sections of steel sleeves which are connected end to end, each steel sleeve is divided into a preassembly section and a connecting section, the preassembly section is a middle section part of the steel sleeve, and the connecting section is a part from two ends of the preassembly section to two ends of the steel sleeve;
the preassembled heat shrinkage layer is wrapped outside the preassembled section;
The preassembled PE pipe is sleeved outside the preassembled heat shrinkage layer;
The sleeve connecting pieces are fixed between every two sections of connecting sections of the steel sleeve through the sleeve connecting pieces;
the heat-shrinkable layer is packaged outside the connecting section;
the PE pipe is sleeved outside the heat shrinkage layer.
As a further improvement of the steel sleeve connecting device, the steel sleeve connecting device further comprises a waterproof layer, wherein the waterproof layer wraps the sleeve connecting piece.
As a further improvement of the steel sleeve connecting device, the steel sleeve connecting device further comprises a centralizer, and the centralizer is sleeved at the connecting position of every two sections of the steel sleeves.
As a further improvement of the steel sleeve connecting device, the steel sleeve connecting device further comprises annular fixing pieces, wherein the annular fixing pieces are sleeved outside the preassembled PE pipe, outside the ready-installed PE pipe or at two ends of the centralizer.
As a further improvement of the steel sleeve connecting device, the centralizer is an elastic centralizer and comprises a plurality of elastic righting strips, and the elastic righting strips are equidistantly arranged along the circumference of the steel sleeve.
As a further improvement of the steel bushing connecting device, the length of the centralizer is not smaller than the length covered by the waterproof layer.
As a further improvement of the steel casing connection device, the casing connection piece is a casing collar.
As a further improvement of the steel bushing connecting device, the annular fixing piece is an annular clamp.
As a further improvement of the steel bushing connecting device, the outer wall of the steel bushing is also coated with an anti-corrosion layer.
As a further improvement of the steel casing connection device, the outer diameter of the centralizer is smaller than the inner diameter of the well wall.
Compared with the prior art, the steel sleeve connecting device has at least the following technical effects:
1. The pre-installed end of the steel sleeve is pre-wrapped with the heat shrinkage layer and the PE pipe, and only partial vacancies of the connecting section are reserved for installing the insulating protection layer after the steel sleeve is transported to the site, so that the installation time of the temperature-resistant insulating protection layer can be greatly saved.
2. The waterproof layer is arranged at the joint of the steel sleeve, so that better sealing and waterproof effects are achieved.
3. The centralizer is arranged at the joint of the steel casing pipe to play a role in forced centering.
4. The annular fixing piece can fix the PE pipe, the heat shrinkage layer and the centralizer.
5. The anti-corrosion layer can play a good anti-corrosion role on the steel sleeve.
For a better understanding and implementation, the present invention is described in detail below with reference to the drawings.
Drawings
Fig. 1 is a schematic structural view of a steel bushing connection device according to the present invention.
Detailed Description
The invention provides a steel sleeve connecting device suitable for temperature-resistant insulation protection of a deep well grounding electrode steel sleeve, which can be installed when the steel sleeve is lowered step by step, and has the effects of corrosion resistance, temperature resistance, insulation, sealing, centering and the like.
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. Rather, these embodiments are intended to convey the scope of the invention to those skilled in the art.
Unless otherwise defined, terms (including technical and scientific terms) used herein should be understood to have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Moreover, it will be appreciated that the terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
As shown in fig. 1, fig. 1 is a schematic structural view of a steel bushing connection device according to the present invention.
The utility model provides a steel bushing connecting device, includes steel bushing 1, pre-installation heat shrinkage layer 2, pre-installation PE pipe 3, sleeve pipe connecting piece 4, the heat shrinkage layer of now adorning 5 and the PE pipe of now adorning 6, pre-installation heat shrinkage layer 2, pre-installation PE pipe 3 install on steel bushing 1 in advance, and just remain a small amount of vacancy and install after steel bushing 1 fortune supports the scene with the PE pipe of now adorning 6, can save the installation time of temperature-resistant insulating protection layer in a large number.
The respective components of the steel bushing connecting device of the present embodiment are described in detail below.
The steel casing 1 is a protection and support component which is lowered into a well, and can protect electrical equipment in the steel casing 1, and comprises at least two sections of steel casings 1 which are connected end to end, wherein each steel casing 1 is divided into a preassembly section and a connection section, the preassembly section is a middle section part of the steel casing, and the connection section is a part from two ends of the preassembly section to two ends of the steel casing 1. Specifically, two ends of each steel sleeve 1 are left with about 1m as connecting sections for hoisting and connecting.
And the preassembled heat shrinkage layer 2 is wrapped outside the preassembled section and plays a role in insulating and sealing. Specifically, the pre-installed heat shrinkage layer is a heat shrinkage tube, and is pre-installed on the pre-installed section of the steel sleeve 1 when the steel sleeve 1 is still in the factory. In the embodiment, the diameter of the heat shrinkage tube is not less than 400mm, the thickness is not less than 1.5mm, the high pressure resistance is greater than 1kV, the water pressure resistance is greater than 4MPa, and the temperature resistance is not less than 100 ℃.
The preassembled PE pipe 3 is sleeved outside the preassembled heat shrinkage layer 2, is generally the same as the preassembled section in length, and is pre-installed on the preassembled section of the steel sleeve 1 when the steel sleeve 1 is still in a factory, so that the protection and heat preservation effects are achieved. In the embodiment, the inner diameter of the preassembled PE pipe 3 is slightly larger than the diameter of the preassembled heat shrinkage layer by 1-3mm, and the pipe wall thickness is not smaller than 10mm.
Preferably, before the pre-installed heat shrinkage layer 2 is included, rust removal and cleaning work are performed on the outer wall of the pre-installed section of the steel sleeve 1, the outer layer of the sleeve is smooth and clean, and an anti-corrosion layer is coated, and in the embodiment, the anti-corrosion layer is epoxy primer.
And the sleeve connecting pieces 4 are fixed between every two connecting sections of the steel sleeve 1 through the sleeve connecting pieces 4. Specifically, the sleeve connecting piece 4 is a sleeve coupling, when the sleeve coupling is lifted and installed, the upper section of steel sleeve 1 and the lower section of steel sleeve 1 are centered, the sleeve coupling is adopted for fixedly connecting, and the two ends of the sleeve coupling are connected by screw threads. The sleeve connection 4 serves both a fixing and a sealing function.
Preferably, after the connection of the steel sleeve 1 is completed, the connection section of the steel sleeve 1 is polished and derusted, and then an anti-corrosion layer is coated, and in this embodiment, the anti-corrosion layer is epoxy primer.
And the heat shrinkage layer 5 is packaged outside the connecting section to insulate and seal the connecting section. Specifically, the heat shrinkage layer 5 is a heat shrinkage belt, and after the two sections of steel sleeve 1 are connected, the heat shrinkage belt is wrapped on the corresponding connecting section. In the embodiment, the thickness of the heat-shrinkable tape is not less than 1.5mm, the thickness is not less than 250mm, the high-voltage resistance is greater than 1kV, the water-resistant pressure is greater than 4MPa, and the temperature resistance is not less than 100 ℃.
The PE pipe 6 is sleeved outside the heat shrinkage layer 5 to protect and preserve heat. In the embodiment, the inner diameter of the PE pipe 6 is slightly larger than the diameter of the heat shrinkage layer 1-3mm, and the pipe wall thickness is not smaller than 10mm.
As a preferred embodiment, a waterproof layer 7 is further included, and the waterproof layer wraps the sleeve connecting piece 4. Specifically, the waterproof layer 7 is a waterproof adhesive tape, and before the packaging of the ready-package heat shrinkage layer 5, the sleeve connecting piece 4 is sealed by adopting the waterproof adhesive tape, so that better sealing and waterproof effects are achieved. In the embodiment, the thickness of the waterproof adhesive tape is not less than 1.5mm, the waterproof pressure is greater than 4MPa, and the winding width is not less than 30cm.
As a preferred embodiment, the steel casing pipe further comprises a centralizer 8, the connection part of every two sections of the steel casing pipes 1 is sleeved with the centralizer 8, specifically, the centralizer 8 is an elastic centralizer and comprises a plurality of elastic centralizer strips, the elastic centralizer strips are equidistantly arranged along the circumference of the steel casing pipes 1, and further, the length of the centralizer 8 is not less than the length covered by the waterproof layer 7. The centralizer 8 acts as a positive centering. In this embodiment, the outer diameter of the centralizer 8 is smaller than the inner diameter of the well wall, the length of the centralizer 8 is not smaller than 15-20cm of the length covered by the waterproof layer 7, the elastic centralizing strips are not smaller than 12 strips, the width is not smaller than 25mm, and the thickness is not smaller than 4mm.
As a preferred embodiment, the device further comprises an annular fixing piece 9, wherein the annular fixing piece 9 is sleeved outside the preassembled PE pipe 2, the ready-packaged PE pipe 6 or two ends of the centralizer, and is used for fixing the heat shrinkage layer, the PE pipe and the centralizer 8. Specifically, the annular fixing piece 9 is an annular clamp, the diameter of the annular clamp is slightly larger than that of the PE pipe by 1-4mm, the distance between the annular clamps is not smaller than 30cm, the connecting steel sheets forming the annular clamp are not smaller than 4 channels, the width of the connecting steel sheets is not smaller than 25mm, and the thickness of the connecting steel sheets is not smaller than 4mm.
Working principle: in the steel sleeve connecting device, the middle section of the steel sleeve 1, namely the preassembled section thereof, can be provided with the insulation protection structure in advance in a factory, the outer side is derusted and cleaned, then is coated with the anti-corrosion layer, then is wrapped by the preassembled heat shrinkage layer 2 and the preassembled PE pipe 3, and is installed on the remained connecting section after being transported to a construction site, so that the installation time of the temperature-resistant insulation protection layer can be greatly saved. Meanwhile, three working procedures are adopted for temperature-resistant insulation of the steel sleeve 1, and the first working procedure is an anti-corrosion layer, and in the embodiment, the anti-corrosion sleeve is epoxy primer, so that the anti-corrosion sleeve has the greatest advantages of improving the mechanical property of a coating, playing a good coating shielding role and having a good anti-corrosion role; the second channel is a heat shrinkage layer, in the embodiment, a middle wall pipeline heat shrinkage pipe, and has the greatest advantages of high-temperature shrinkage, softness, flame retardance, insulation and corrosion resistance; the third is PE pipe, and has the greatest advantages of impact resistance, wear resistance and obvious double-resistance effect. Simultaneously, when in field installation, the sleeve collar and the waterproof adhesive tape are used for sealing, and the outer side is provided with the epoxy primer, the heat shrinkage tape and the PE pipe, so that the effects of temperature resistance and insulation are achieved; and meanwhile, the elastic centralizer and the annular clamp are adopted for fixing and forced centering at the mounting section. The multi-functional functions of deep well grounding electrode steel sleeve section lowering installation, temperature resistance, insulation, corrosion resistance, sealing and centering are met.
Compared with the prior art, the steel sleeve connecting device has at least the following technical effects:
1. The pre-installed end of the steel sleeve is pre-wrapped with the heat shrinkage layer and the PE pipe, and only partial vacancies of the connecting section are reserved for installing the insulating protection layer after the steel sleeve is transported to the site, so that the installation time of the temperature-resistant insulating protection layer can be greatly saved.
2. The waterproof layer is arranged at the joint of the steel sleeve, so that better sealing and waterproof effects are achieved.
3. The centralizer is arranged at the joint of the steel casing pipe to play a role in forced centering.
4. The annular fixing piece can fix the PE pipe, the heat shrinkage layer and the centralizer.
5. The anti-corrosion layer can play a good anti-corrosion role on the steel sleeve.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (8)
1. A steel bushing connection device, comprising:
the steel sleeve comprises at least two sections of steel sleeves which are connected end to end, each section of steel sleeve is divided into a preassembly section and a connection section, the preassembly section is a middle section part of the steel sleeve, and the connection section is a part from two ends of the preassembly section to two ends of the steel sleeve;
the preassembled heat shrinkage layer is wrapped outside the preassembled section;
The preassembled PE pipe is sleeved outside the preassembled heat shrinkage layer;
The sleeve connecting pieces are fixed between every two sections of connecting sections of the steel sleeve through the sleeve connecting pieces;
the heat-shrinkable layer is packaged outside the connecting section;
The PE pipe is sleeved outside the heat shrinkage layer;
The waterproof layer wraps the sleeve connecting piece;
The steel casing pipe is characterized by further comprising a centralizer, wherein the centralizer is sleeved at the joint of every two sections of the steel casing pipes.
2. The steel bushing connection device of claim 1, wherein: the device also comprises an annular fixing piece, wherein the annular fixing piece is sleeved outside the preassembled PE pipe, the ready-packaged PE pipe or two ends of the centralizer.
3. The steel bushing connection device of claim 2, wherein: the centralizer is an elastic centralizer and comprises a plurality of elastic centralizer strips, and the elastic centralizer strips are equidistantly arranged along the circumference of the steel sleeve.
4. The steel bushing connection device of claim 2, wherein: the length of the centralizer is not smaller than the length covered by the waterproof layer.
5. The steel bushing connection device of claim 1, wherein: the casing connection piece is a casing coupling.
6. The steel bushing connection device of claim 2, wherein: the annular fixing piece is an annular clamp.
7. The steel bushing connection device of claim 1, wherein: the outer wall of the steel sleeve is also coated with an anti-corrosion layer.
8. A steel bushing connection device according to claim 3, characterized in that: the outer diameter of the centralizer is smaller than the inner diameter of the well wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811100741.1A CN108979559B (en) | 2018-09-20 | 2018-09-20 | Steel sleeve connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811100741.1A CN108979559B (en) | 2018-09-20 | 2018-09-20 | Steel sleeve connecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108979559A CN108979559A (en) | 2018-12-11 |
| CN108979559B true CN108979559B (en) | 2024-07-23 |
Family
ID=64545301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811100741.1A Active CN108979559B (en) | 2018-09-20 | 2018-09-20 | Steel sleeve connecting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN108979559B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669020B (en) * | 2021-08-04 | 2023-12-08 | 深圳宏业基岩土科技股份有限公司 | Rapid up-down butt joint method for steel sleeve |
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| CN101158420A (en) * | 2007-09-28 | 2008-04-09 | 中国海洋石油总公司 | Quick-speed sealing compensating method of submarine pipeline welding line joint and locking type sheath used |
| CN103075121A (en) * | 2012-06-19 | 2013-05-01 | 李越 | Integrated micro-elastic casing centralizer and production method thereof |
| CN105114005A (en) * | 2015-09-18 | 2015-12-02 | 天津德华石油装备制造有限公司 | Anti-corrosion oil casing containing carbon, chromium and molybdenum elements |
| CN206071480U (en) * | 2016-09-22 | 2017-04-05 | 中国石油集团渤海钻探工程有限公司第一固井分公司 | A kind of elastic centralizer |
| CN206340392U (en) * | 2016-12-31 | 2017-07-18 | 江苏帕卓管路系统股份有限公司 | A kind of heat-shrinkable T bush connected for pipe fitting |
| CN209115047U (en) * | 2018-09-20 | 2019-07-16 | 广东科诺勘测工程有限公司 | A kind of steel bushing pipe connection |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2535646Y (en) * | 2002-03-13 | 2003-02-12 | 廖仲力 | Stainless steel tube termo-contracting type connector |
| US8701785B2 (en) * | 2011-01-12 | 2014-04-22 | Tesco Corporation | Shrinkable sleeve stabilizer |
| CN107355670A (en) * | 2016-05-09 | 2017-11-17 | 朱江 | Pipeline pyrocondensation sealing shroud |
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2018
- 2018-09-20 CN CN201811100741.1A patent/CN108979559B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158420A (en) * | 2007-09-28 | 2008-04-09 | 中国海洋石油总公司 | Quick-speed sealing compensating method of submarine pipeline welding line joint and locking type sheath used |
| CN103075121A (en) * | 2012-06-19 | 2013-05-01 | 李越 | Integrated micro-elastic casing centralizer and production method thereof |
| CN105114005A (en) * | 2015-09-18 | 2015-12-02 | 天津德华石油装备制造有限公司 | Anti-corrosion oil casing containing carbon, chromium and molybdenum elements |
| CN206071480U (en) * | 2016-09-22 | 2017-04-05 | 中国石油集团渤海钻探工程有限公司第一固井分公司 | A kind of elastic centralizer |
| CN206340392U (en) * | 2016-12-31 | 2017-07-18 | 江苏帕卓管路系统股份有限公司 | A kind of heat-shrinkable T bush connected for pipe fitting |
| CN209115047U (en) * | 2018-09-20 | 2019-07-16 | 广东科诺勘测工程有限公司 | A kind of steel bushing pipe connection |
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| Publication number | Publication date |
|---|---|
| CN108979559A (en) | 2018-12-11 |
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