CN109538131A - A kind of thermal insulation straight-joint type insulated tubing - Google Patents
A kind of thermal insulation straight-joint type insulated tubing Download PDFInfo
- Publication number
- CN109538131A CN109538131A CN201811606897.7A CN201811606897A CN109538131A CN 109538131 A CN109538131 A CN 109538131A CN 201811606897 A CN201811606897 A CN 201811606897A CN 109538131 A CN109538131 A CN 109538131A
- Authority
- CN
- China
- Prior art keywords
- tube
- outer tube
- intermediate tube
- thermal insulation
- heat
- 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.)
- Pending
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000000945 filler Substances 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims abstract description 8
- 238000004321 preservation Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000004964 aerogel Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000003921 oil Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000035800 maturation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000010794 Cyclic Steam Stimulation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003208 petroleum Substances 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
- E21B17/1085—Wear protectors; Blast joints; Hard facing
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)
- Thermal Insulation (AREA)
Abstract
The invention discloses a kind of thermal insulation straight-joint type insulated tubings, it is characterized in that, including inner tube, intermediate tube and outer tube, the intermediate tube both ends are respectively equipped with external screw thread and internal screw thread, its inner hole is equipped with inner tube, inner tube and intermediate tube are connected with welding form, inner tube and intermediate tube central filler inner tube heat-barrier material；The outer tube is arranged in intermediate tube excircle, and outer tube is connected with intermediate tube both ends using welding form, outer tube and intermediate tube central filler outer tube heat-barrier material, and outer tube excircle winds one layer of heat preservation layer.Inside and outside double thermal insulation layer design not only improves heat insulation, reduces thermal energy loss and is beneficial to energy conservation emission reduction, while increasing carrying forced area again, improves bonding strength.
Description
Technical field
The present invention relates to heavy crude petroleum thermal recovery tubing technical field, in particular to a kind of thermal insulation direct linkage type insulation oil
Pipe.
Background technique
China's heavy oil resources are widely distributed, and viscous crude occupies comparable specific gravity in China's oil yield, and each oil-field thick-oil produces
Amount also improves year by year.The method that viscous crude mainly uses heating exploitation is exploited, and cyclic steam stimulation, steam driving exploitation and steam can be divided into
Assisted gravity drives exploitation.It is influenced by high temperature, the set damage phenomenon of thermal production well is very serious.Most domestic heavy crude heat extraction oil field at present
Use insulated tubing.
Traditional insulated tubing processes coupling type screw thread on outer tube, connects insulated tubing by box cupling.The connection of box cupling
Position belongs to weak link in the insulated tubing tubing string of thermal production well, caused by therefore position goes wrong in use at the scene
Accident is commonplace.In use it has also been found that the instlated tubular with box cupling is also undesirable in terms of heat insulation.And tradition
Instlated tubular it is bad only with inner insulating layer form heat insulation, serious heat loss is unable to satisfy deep-well hole condition demand.These
Problem is all field of heavy oil thermal recovery project urgently to be resolved.
Summary of the invention
The object of the present invention is to provide a kind of thermal insulation straight-joint type insulated tubings.
To achieve the purpose of the present invention, the present invention provides a kind of thermal insulation straight-joint type insulated tubings, which is characterized in that
Including inner tube, intermediate tube and outer tube, the intermediate tube both ends are respectively equipped with external screw thread and internal screw thread, and inner hole is equipped with inner tube, interior
Pipe and intermediate tube are connected with welding form, inner tube and intermediate tube central filler inner tube heat-barrier material；
The outer tube is arranged in intermediate tube excircle, and outer tube is connected with intermediate tube both ends using welding form, and outer tube is in
Between pipe central filler outer tube heat-barrier material, outer tube excircle winds one layer of heat preservation layer, and intermediate tube big end outer diameter D=intermediate tube rule
Especially diameter d+ outer tube wall thickness t2x2+ insulation layer thickness t7x2.
Wherein, the outer tube and intermediate tube material are API 5CT standard oil tubing and grade of steel J55.
Wherein, the internal screw thread and externally threaded tooth form are equivalent round thread structure, the high H=1.75mm of tooth, pitch P
=4.64mm, G=60 ° of thread form angle, taper 0.125.
Wherein, the heat-barrier material filled between the outer tube and intermediate tube is glass fibre, and inner tube and intermediate tube are filled
Heat-barrier material is aerogel blanket.
Wherein, intermediate tube specification outside diameter d=88.9 ± 0.79mm.
Compared with prior art, beneficial effects of the present invention are,
1, good using oil pipe round thread technology maturation machinability, having saved working time also reduces cost；On a large scale
The quality control of production is guaranteed, convenient for the popularization and development of product；
2, thoroughly solved without coupling straight-connecting because using box cupling due to caused by failure, safety accident, substantially increase
The safety of the insulated tubing tubing string of thermal production well and total quality are horizontal；
3, inside and outside double thermal insulation layer design not only improves heat insulation, reduces thermal energy loss and is beneficial to energy conservation emission reduction, together
When increase carrying forced area again, improve bonding strength；
4, entire tubing string outer diameter is consistent after connecting internal and external threads using the design of outer thermal insulation layer, has greatly mitigated lower tubular column
Resistance reduces the accident risks such as bit freezing, improves safety production efficiency；
5, the working environment being particularly adapted under the complex hole conditions such as deep-well is convenient for industrially promotion and application.
Detailed description of the invention
Fig. 1 show structural schematic diagram of the invention；
Fig. 2 show intermediate tube structural schematic diagram of the invention；
Fig. 3 show outer tube structure enlarged diagram of the invention；
Fig. 4 show thread tooth structural schematic diagram of the invention；
In figure: 1. inner tubes, 2. outer tubes, 3. intermediate tubes, 4. external screw threads, 5. inner tube heat-barrier materials, 6. internal screw threads, 7. heat preservations
Layer, 8. outer tube heat-barrier materials, P- screw pitch, H- tooth is high, G thread form angle, D intermediate tube big end outer diameter, d intermediate tube specification outer diameter, t2.
Outer tube wall thickness, t7. insulation layer thickness.
Specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
It should be noted that " connection " described herein and the word for expressing " connection ", as " being connected ",
" connected " etc. had both included that a certain component is directly connected to another component, and had also included that a certain component passes through other component and another portion
Part is connected.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also be intended to include plural form, additionally, it should be understood that, when in the present specification using belong to "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, component or module, component and/or their combination.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so that presently filed embodiment described herein for example can be in addition to herein
Sequence other than those of diagram or description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units not
Those of be necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for these processes, side
The intrinsic other step or units of method, product or equipment.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a component shown in the figure or module or feature and other
The spatial relation of component or module or feature.It should be understood that spatially relative term be intended to comprising in addition to component or
Different direction in use or operation except orientation of person's module described in figure.For example, if component in attached drawing
Perhaps module is squeezed, be described as " above other component or module or construction " or " in other component or module or
On construction " component or module after will be positioned as " below other component or module or construction " or " at other
Under component or module or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The component or module can also be positioned with other different modes (to be rotated by 90 ° or in other
Orientation), and respective explanations are made to the opposite description in space used herein above.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
As Figure 1-Figure 4, this application provides a kind of thermal insulation straight-joint type insulated tubings, including inner tube 1, intermediate tube
3 and outer tube 2,3 both ends of intermediate tube are respectively equipped with external screw thread 4 and internal screw thread 6, and inner hole is equipped with inner tube 1, inner tube 1 and intermediate
Pipe 3 is connected with welding form, inner tube 1 and 3 central filler inner tube heat-barrier material 5 of intermediate tube；
The outer tube 2 is arranged in 3 excircle of intermediate tube, and outer tube 2 is connected with 3 both ends of intermediate tube using welding form, outer tube 2
With 3 central filler outer tube heat-barrier material 8 of intermediate tube, 2 excircle of outer tube winds one layer of heat preservation layer 7, and 3 big end outer diameter D of intermediate tube
=intermediate tube specification outside diameter d+outer tube wall thickness t2x2+ insulation layer thickness t7x2.
In addition, the outer tube 2 and 3 material of intermediate tube are API 5CT standard oil tubing and grade of steel J55.
In addition, the tooth form of the internal screw thread 6 and external screw thread 4 is equivalent round thread structure, the high H=1.75mm of tooth, spiral shell
Away from P=4.64mm, G=60 ° of thread form angle, taper 0.125.
In addition, the heat-barrier material filled between the outer tube 2 and intermediate tube 3 is glass fibre, and inner tube 1 and intermediate tube 3
Filling with insulation material is aerogel blanket.
In addition, intermediate tube specification outside diameter d=88.9 ± 0.79mm.
The application has the effect that
1, good using oil pipe round thread technology maturation machinability, having saved working time also reduces cost；On a large scale
The quality control of production is guaranteed, convenient for the popularization and development of product；
2, thoroughly solved without coupling straight-connecting because using box cupling due to caused by failure, safety accident, substantially increase
The safety of the insulated tubing tubing string of thermal production well and total quality are horizontal；
3, inside and outside double thermal insulation layer design not only improves heat insulation, reduces thermal energy loss and is beneficial to energy conservation emission reduction, together
When increase carrying forced area again, improve bonding strength；
4, entire tubing string outer diameter is consistent after connecting internal and external threads using the design of outer thermal insulation layer, has greatly mitigated lower tubular column
Resistance reduces the accident risks such as bit freezing, improves safety production efficiency；
5, the working environment being particularly adapted under the complex hole conditions such as deep-well is convenient for industrially promotion and application.
The above is only a preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of thermal insulation straight-joint type insulated tubing, which is characterized in that including inner tube (1), intermediate tube (3) and outer tube (2), institute
It states intermediate tube (3) both ends and is respectively equipped with external screw thread (4) and internal screw thread (6), inner hole is equipped with inner tube (1), inner tube (1) and intermediate tube
(3) it is connected with welding form, inner tube (1) and intermediate tube (3) central filler inner tube heat-barrier material (5)；
The outer tube (2) is arranged in intermediate tube (3) excircle, and outer tube (2) is connected with intermediate tube (3) both ends using welding form,
Outer tube (2) and intermediate tube (3) central filler outer tube heat-barrier material (8), outer tube (2) excircle wind one layer of heat preservation layer (7), and in
Between manage (3) big end outer diameter D=intermediate tube specification outside diameter d+outer tube wall thickness t2x2+ insulation layer thickness t7x2.
2. thermal insulation straight-joint type insulated tubing according to claim 1, which is characterized in that the outer tube (2) and centre
Managing (3) material is API 5CT standard oil tubing and grade of steel J55.
3. thermal insulation straight-joint type insulated tubing according to claim 1, which is characterized in that the internal screw thread (6) and outer
The tooth form of screw thread (4) be equivalent round thread structure, the high H=1.75mm of tooth, pitch P=4.64mm, G=60 ° of thread form angle, cone
Degree is 0.125.
4. thermal insulation straight-joint type insulated tubing according to claim 1, which is characterized in that the outer tube (2) and centre
The heat-barrier material filled between pipe (3) is glass fibre, and inner tube (1) and intermediate tube (3) filling with insulation material are aerogel blanket.
5. thermal insulation straight-joint type insulated tubing according to claim 1, which is characterized in that intermediate tube specification outside diameter d=
88.9±0.79mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811606897.7A CN109538131A (en) | 2018-12-27 | 2018-12-27 | A kind of thermal insulation straight-joint type insulated tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811606897.7A CN109538131A (en) | 2018-12-27 | 2018-12-27 | A kind of thermal insulation straight-joint type insulated tubing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109538131A true CN109538131A (en) | 2019-03-29 |
Family
ID=65858036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811606897.7A Pending CN109538131A (en) | 2018-12-27 | 2018-12-27 | A kind of thermal insulation straight-joint type insulated tubing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109538131A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022099A (en) * | 2019-12-26 | 2020-04-17 | 中铁隧道局集团有限公司 | CO for ventilation in high-heat tunnel construction2Double-layer heat-insulation soft air pipe |
| CN113464059A (en) * | 2021-04-28 | 2021-10-01 | 天津钢管制造有限公司 | Double-layer sleeve design method |
-
2018
- 2018-12-27 CN CN201811606897.7A patent/CN109538131A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022099A (en) * | 2019-12-26 | 2020-04-17 | 中铁隧道局集团有限公司 | CO for ventilation in high-heat tunnel construction2Double-layer heat-insulation soft air pipe |
| CN113464059A (en) * | 2021-04-28 | 2021-10-01 | 天津钢管制造有限公司 | Double-layer sleeve design method |
| CN113464059B (en) * | 2021-04-28 | 2022-08-12 | 天津钢管制造有限公司 | Double-layer sleeve design method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190329 |
|
| WD01 | Invention patent application deemed withdrawn after publication |