CN114233237A - Laminated expanding type temperature control sealing device - Google Patents
Laminated expanding type temperature control sealing device Download PDFInfo
- Publication number
- CN114233237A CN114233237A CN202111667452.1A CN202111667452A CN114233237A CN 114233237 A CN114233237 A CN 114233237A CN 202111667452 A CN202111667452 A CN 202111667452A CN 114233237 A CN114233237 A CN 114233237A
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- Prior art keywords
- central tube
- sleeve
- sealing sleeve
- seal
- sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 95
- 230000001681 protective effect Effects 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 26
- 238000004321 preservation Methods 0.000 abstract description 6
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 230000003139 buffering effect Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 231100000252 nontoxic Toxicity 0.000 description 3
- 230000003000 nontoxic effect Effects 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002356 single layer Substances 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
- 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
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- 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)
- Gasket Seals (AREA)
Abstract
The invention discloses a laminated expanding type temperature control sealing device which comprises an upper central tube, a lower central tube, an upper sealing sleeve and a lower sealing sleeve, wherein one end of the upper central tube is sleeved with the lower central tube, the joint of the upper central tube and the lower central tube is sleeved with an uplink taper sleeve, one end of the uplink taper sleeve is sleeved with the lower sealing sleeve, one end of the lower sealing sleeve is sleeved with a middle sealing sleeve, one end of the middle sealing sleeve is sleeved with the upper sealing sleeve, and one end of the upper sealing sleeve is sleeved with an upper protective cover. Through multilayer seal structure, overlap each other and establish together, improved holistic sealed effect, realize high leakproofness, the heat preservation effect is showing, and the wide application reduces thermal loss in the thermal-insulated double containment heat preservation festival of vacuum, has revealed energy-concerving and environment-protective design theory.
Description
Technical Field
The invention relates to the technical field of sealing structures, in particular to a laminated expanding type temperature control sealing device.
Background
In the prior art, the gas injection tubular column product of the oil well is characterized by being heavier than the heat insulation sealing measure at a joint, and has the defects that the existing sealing structure mostly adopts a single-layer sealing layer, the sealing and heat insulation material has no axial supporting force and can not form axial extrusion sealing force, and the sealing effect is poor; and the sealing layer and the joint of the gas injection pipe are mostly sealed in a buckling manner, the pipe needs to be pre-installed before the lower pipe, and the pipe diameter is fixed, so that the application range is limited. To this end, we propose a laminated expanding temperature controlled seal.
Disclosure of Invention
The invention mainly aims to provide a laminated expanding type temperature control sealing device which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a stromatolite expanding temperature control sealing device, includes center tube, lower center tube, goes up seal cover and lower seal cover, the pot head of going up the center tube is equipped with lower center tube, the junction cover of going up center tube and lower center tube is equipped with upward taper sleeve and goes upward the pot head of taper sleeve and is equipped with lower seal cover, the pot head of seal cover is equipped with well seal cover down, the pot head of well seal cover is equipped with the seal cover, the pot head of going up the seal cover is equipped with the guard shield.
Furthermore, one end of the upper sealing sleeve is clamped in a limiting groove of the upper protective cover, the upper protective cover is clamped between the upper sealing sleeve and the upper protective cover, an upper joint is sleeved at one end of the upper protective cover, a cylinder barrel is sleeved on the outer side of the upper taper sleeve, and a piston is mounted at the end of the upper taper sleeve through a screw.
Furthermore, the insertion end of the upward taper sleeve is positioned in the lower sealing sleeve; the inserting end of the upward taper sleeve is positioned in the lower sealing sleeve, so that the upward taper sleeve is convenient to sleeve and fix, the stability is strong, and the effect is obvious.
Furthermore, one end of the middle sealing sleeve is clamped on the lower sealing sleeve, one end of the upper sealing sleeve is clamped on the middle sealing sleeve, and a middle protective cover is clamped between the upper sealing sleeve and the middle sealing sleeve.
Furthermore, one end of the cylinder barrel is provided with an end head through a screw, and the end part of the lower central tube is provided with a lower joint; the end is utilized to facilitate the effect of limiting and fixing the cylinder barrel, and the sealing effect is remarkable.
Furthermore, a sealing gasket is arranged at the joint between the lower central pipe and the upper central pipe, and the sealing gasket is made of a PP material.
Further, the piston is located on the inner side of the cylinder barrel, and the lower central tube and the upper central tube are both made of TPU materials; the lower central tube and the upper central tube are both made of TPU materials, and are non-toxic, harmless, acid-base corrosion resistant, high in strength, good in flexibility and durable.
Further, in the first state, high-temperature and high-pressure gas is not introduced into the lower central tube and the upper central tube, and the upward taper sleeve and the piston are in a relaxed state.
Further, in a second state, high-temperature and high-pressure gas is introduced into the lower central tube and the upper central tube, and the upward taper sleeve and the piston are automatically in a locking state.
Further, in a first state, the medium in the cylinder barrel is heated to push the piston to move rightwards, and further the upward taper sleeve is pushed to move rightwards.
Compared with the prior art, the invention has the following beneficial effects:
1. be provided with seal ring and make for the PP material between lower center tube and the last center tube, elasticity is high, and buffering effect is good, and the close laminating nature is high, and the effectual effect of preventing revealing that plays utilizes the piston to play sealed effect to the one end of going upward the taper sleeve to the outside cover that utilizes going upward the taper sleeve is equipped with the cylinder, plays spacing fixed effect and improves overall seal structure's intensity, rigidity and stability.
2. Through multilayer seal structure, overlap each other and establish together, improved holistic sealed effect, realize high leakproofness, the heat preservation effect is showing, and the wide application reduces thermal loss in the thermal-insulated double containment heat preservation festival of vacuum, has revealed energy-concerving and environment-protective design theory.
3. This novel stromatolite expanding temperature control sealing device function is various, easy operation, and the production of being convenient for has satisfied the multiple demand in the use, is fit for extensively using widely.
Drawings
Fig. 1 is a schematic view of the overall structure of a laminated expanding temperature-controlled sealing device according to the present invention.
Fig. 2 is a schematic diagram of a piston structure of a laminated expanding type temperature-controlled sealing device according to the invention.
Fig. 3 is a schematic structural view of a portion a of the stacked expanding temperature-controlled sealing device according to the present invention.
In the figure: 1. an upper joint; 2. an upper shield; 3. an upper protective cover; 4. an upper sealing sleeve; 5. an upper center tube; 6. a middle protective cover; 7. a middle sealing sleeve; 8. a lower sealing sleeve; 9. an upward taper sleeve; 10. a cylinder barrel; 11. a lower center tube; 12. a piston; 13. a base plate; 14. and a lower joint.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-3, a laminated expanding temperature control sealing device comprises an upper central tube 5, a lower central tube 11, an upper sealing sleeve 4 and a lower sealing sleeve 8, wherein one end of the upper central tube 5 is sleeved with the lower central tube 11, the joint of the upper central tube 5 and the lower central tube 11 is sleeved with an uplink taper sleeve 9, one end of the uplink taper sleeve 9 is sleeved with the lower sealing sleeve 8, one end of the lower sealing sleeve 8 is sleeved with a middle sealing sleeve 7, one end of the middle sealing sleeve 7 is sleeved with the upper sealing sleeve 4, and one end of the upper sealing sleeve 4 is sleeved with an upper shield 2.
One end of the upper sealing sleeve 4 is clamped in a limiting groove of the upper shield 2, the upper protective cover 3 is clamped between the upper sealing sleeve 4 and the upper shield 2, an upper joint 1 is sleeved at one end of the upper shield 2, a cylinder 10 is sleeved on the outer side of the upper taper sleeve 9, and a piston 12 is mounted at the end of the upper taper sleeve 9 through a screw.
In this embodiment, as shown in fig. 1, a piston 12 is used to achieve a sealing effect on one end of the upward taper sleeve 9, and a cylinder 10 is sleeved outside the upward taper sleeve 9 to achieve a limiting and fixing effect, so that the strength, rigidity and stability of the overall sealing structure are improved.
Wherein, the plug-in end of the upward taper sleeve 9 is positioned in the lower sealing sleeve 8.
In this embodiment, as shown in fig. 1, the insertion end of the upward taper sleeve 9 is located in the lower sealing sleeve 8, so that the sleeve connection and fixation are facilitated, the stability is strong, and the effect is remarkable.
One end of the middle sealing sleeve 7 is clamped on the lower sealing sleeve 8, one end of the upper sealing sleeve 4 is clamped on the middle sealing sleeve 7, and the middle protective cover 6 is clamped between the upper sealing sleeve 4 and the middle sealing sleeve 7.
In this embodiment, as shown in fig. 1 and 3, the middle protective cover 6 and the upper protective cover 3 are used to improve the sealing performance between the middle sealing sleeve 7 and the upper sealing sleeve 4, and between the upper sealing sleeve 4 and the upper protective cover 2, and the middle sealing sleeve and the upper sealing sleeve 4 are sleeved together through a multi-layer sealing structure, so that the overall sealing effect is improved, high sealing performance is realized, and the heat preservation effect is remarkable.
Wherein, a head 15 is installed at one end of the cylinder barrel 10 through a screw, and a lower joint 14 is arranged at the end of the lower central tube 11.
In this embodiment, as shown in fig. 1, the end head 15 is used to facilitate the spacing and fixing effect on the cylinder 10, and the sealing effect is significant.
Wherein, a sealing gasket 16 is arranged at the joint between the lower central tube 11 and the upper central tube 5, and the sealing gasket 16 is made of PP material.
In this embodiment, as shown in fig. 1, a sealing gasket 16 is arranged between the lower central tube 11 and the upper central tube 5 and is made of PP material, so that the elasticity is high, the buffering effect is good, the close adhesion is high, and the leakage prevention effect is effectively achieved.
The piston 12 is located on the inner side of the cylinder 10, and the lower central tube 11 and the upper central tube 5 are both made of TPU material.
In the embodiment, as shown in fig. 1, the lower central tube 11 and the upper central tube 5 are both made of TPU material, and are non-toxic, harmless, resistant to acid and alkali corrosion, high in strength, good in flexibility and durable.
The invention relates to a laminated expanding temperature control sealing device which can be used for a gas injection pipe of an oil-gas well. When the pipe is lowered (in a first state), high-temperature and high-pressure gas is not introduced into the lower central pipe 11 and the upper central pipe 5, and the upper taper sleeve 9 and the piston 12 are in a relaxed state (and other sealing elements are also the same), and can even shrink in the pipe diameter direction. At this moment, the gas injection pipe has great flexible convenience, can be applicable to the well head of different pipe diameters.
After the installation is in place, high-temperature and high-pressure gas is introduced into the pipe (in a second state), on one hand, the medium in the cylinder 10 is heated to push the piston 12 to move right, and further push the upward taper sleeve 9 to move right; on the other hand, the high-pressure gas presses the lower central tube 11 externally, the upper taper sleeve 9 is pressed and expanded to push the lower sealing sleeve 8, the middle sealing sleeve 7, the upper sealing sleeve 4 and the upper shield 2 to be locked in sequence along the tube wall of the upper central tube 5, a laminated locking effect is generated, and the gas injection tube is effectively sealed.
The laminated expanding temperature control sealing device can automatically sense temperature change, and after gas injection operation is finished, due to temperature reduction, air pressure is reduced, the lower central tube 11 automatically contracts inwards, so that the upper taper sleeve 9 and the piston 12 return to a loose state again, and the gas injection tube is conveniently taken out of a well.
In addition, because sealing washer 16 is provided with between lower center tube 11 and the last center tube 5 and is made for the PP material, elasticity is high, buffering effect is good, the adherence is high, effectual effect of preventing revealing plays, utilize piston 12 to play sealed effect to the one end of going upward taper sleeve 9, and utilize the outside cover of going upward taper sleeve 9 to be equipped with cylinder 10, play spacing fixed effect and improve whole seal structure's intensity, rigidity and stability, utilize well safety cover 6 and last safety cover 3 to improve well safety cover 7 and the leakproofness between last sealing cover 4 and last guard shield 2, through multilayer seal structure, the mutual cover is established together, the holistic sealed effect has been improved, realize high leakproofness, the heat preservation effect is showing, wide application in the oil well gas injection tubular column. Lower center tube 11 and last center tube 5 are the TPU material and make, and nontoxic, harmless, acid and alkali corrosion resistance, intensity is high, and the pliability is good, durable, and this novel stromatolite expanding temperature control sealing device function is various, easy operation, and the production of being convenient for has satisfied the multiple demand in the use, is fit for extensively using widely.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a stromatolite expansion temperature control sealing device which characterized in that: including last center tube (5), lower center tube (11), go up seal cover (4) and lower seal cover (8), a pot head of going up center tube (5) is equipped with center tube (11) down, the junction cover of going up center tube (5) and lower center tube (11) is equipped with upward taper sleeve (9) and goes upward a pot head of taper sleeve (9) and is equipped with lower seal cover (8), a pot head of lower seal cover (8) is equipped with well seal cover (7), a pot head of well seal cover (7) is equipped with seal cover (4), a pot head of going up seal cover (4) is equipped with guard shield (2).
2. The laminate expanding temperature controlled seal of claim 1, wherein: go up the one end block of seal cover (4) at the spacing inslot of last guard shield (2), go up and press from both sides between seal cover (4) and the last guard shield (2) and hold safety cover (3), the pot head of going up guard shield (2) is equipped with top connection (1), the outside cover of going upward taper sleeve (9) is equipped with cylinder (10), the tip of going upward taper sleeve (9) has piston (12) through the screw mounting.
3. A laminate expanding temperature controlled seal as claimed in claim 1 or 2, wherein: the insertion end of the upward taper sleeve (9) is positioned in the lower sealing sleeve (8).
4. A laminate expanding temperature controlled seal as claimed in claim 1 or 2, wherein: one end of the middle sealing sleeve (7) is clamped on the lower sealing sleeve (8), one end of the upper sealing sleeve (4) is clamped on the middle sealing sleeve (7), and a middle protective cover (6) is clamped between the upper sealing sleeve (4) and the middle sealing sleeve (7).
5. A laminate expanding temperature controlled seal as claimed in claim 1 or 2, wherein: an end head (15) is installed at one end of the cylinder barrel (10) through a screw, and a lower joint (14) is arranged at the end part of the lower central tube (11).
6. A laminate expanding temperature controlled seal as claimed in claim 1 or 2, wherein: a sealing washer (16) is arranged at the joint between the lower central tube (11) and the upper central tube (5), and the sealing washer (16) is made of PP materials.
7. A laminate expanding temperature controlled seal as claimed in claim 1 or 2, wherein: the piston (12) is located on the inner side of the cylinder barrel (10), and the lower central tube (11) and the upper central tube (5) are both made of TPU materials.
8. A laminate expanding temperature controlled seal as claimed in claim 1 or 2, wherein: in the first state, high-temperature and high-pressure gas is not introduced into the lower central tube (11) and the upper central tube (5), and the upward taper sleeve (9) and the piston (12) are in a relaxed state.
9. A laminate expanding temperature controlled seal as claimed in claim 1 or 8, wherein: in the second state, high-temperature and high-pressure gas is introduced into the lower central tube (11) and the upper central tube (5), and the upward taper sleeve (9) and the piston (12) are in a locking state automatically.
10. The laminate expanding temperature controlled seal of claim 8, wherein: in a first state, the medium in the cylinder barrel (10) is heated to push the piston (12) to move rightwards, and further push the upward taper sleeve (9) to move rightwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111667452.1A CN114233237A (en) | 2021-12-31 | 2021-12-31 | Laminated expanding type temperature control sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111667452.1A CN114233237A (en) | 2021-12-31 | 2021-12-31 | Laminated expanding type temperature control sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114233237A true CN114233237A (en) | 2022-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111667452.1A Pending CN114233237A (en) | 2021-12-31 | 2021-12-31 | Laminated expanding type temperature control sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114233237A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2509316Y (en) * | 2001-11-20 | 2002-09-04 | 殷朝辉 | Pressure spring type temperature control hot recovering packer |
| CN201024972Y (en) * | 2007-05-10 | 2008-02-20 | 辽河石油勘探局 | An external sealer for fixing well pipe |
| CN201695988U (en) * | 2010-05-26 | 2011-01-05 | 赵战中 | Pressure difference self sealing type steam filling packer |
| CN201883994U (en) * | 2010-11-23 | 2011-06-29 | 中国石油天然气股份有限公司 | Self-pressure-retaining expansion open hole packer |
| CN203175463U (en) * | 2013-01-25 | 2013-09-04 | 中国石油天然气股份有限公司 | Steam flooding thermal compensation type sealer |
| CN207660585U (en) * | 2017-12-27 | 2018-07-27 | 盘锦奥格威机械制造有限公司 | Elastic claw formula packer in thermal recovery oil well |
| CN211974934U (en) * | 2020-04-14 | 2020-11-20 | 胜利油田固邦石油装备有限责任公司 | Casing heat insulation device for thickened oil thermal production well |
| CN112761569A (en) * | 2019-11-05 | 2021-05-07 | 中国石油化工股份有限公司 | Electric pump well washing device and method, special packer and special hanging basket |
| CN113027374A (en) * | 2021-04-14 | 2021-06-25 | 盘锦博程实业有限公司 | Double-stage temperature control self-sealing device |
-
2021
- 2021-12-31 CN CN202111667452.1A patent/CN114233237A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2509316Y (en) * | 2001-11-20 | 2002-09-04 | 殷朝辉 | Pressure spring type temperature control hot recovering packer |
| CN201024972Y (en) * | 2007-05-10 | 2008-02-20 | 辽河石油勘探局 | An external sealer for fixing well pipe |
| CN201695988U (en) * | 2010-05-26 | 2011-01-05 | 赵战中 | Pressure difference self sealing type steam filling packer |
| CN201883994U (en) * | 2010-11-23 | 2011-06-29 | 中国石油天然气股份有限公司 | Self-pressure-retaining expansion open hole packer |
| CN203175463U (en) * | 2013-01-25 | 2013-09-04 | 中国石油天然气股份有限公司 | Steam flooding thermal compensation type sealer |
| CN207660585U (en) * | 2017-12-27 | 2018-07-27 | 盘锦奥格威机械制造有限公司 | Elastic claw formula packer in thermal recovery oil well |
| CN112761569A (en) * | 2019-11-05 | 2021-05-07 | 中国石油化工股份有限公司 | Electric pump well washing device and method, special packer and special hanging basket |
| CN211974934U (en) * | 2020-04-14 | 2020-11-20 | 胜利油田固邦石油装备有限责任公司 | Casing heat insulation device for thickened oil thermal production well |
| CN113027374A (en) * | 2021-04-14 | 2021-06-25 | 盘锦博程实业有限公司 | Double-stage temperature control self-sealing device |
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