CN208518614U - A kind of ocean insulated tubing - Google Patents
A kind of ocean insulated tubing Download PDFInfo
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- CN208518614U CN208518614U CN201820873570.5U CN201820873570U CN208518614U CN 208518614 U CN208518614 U CN 208518614U CN 201820873570 U CN201820873570 U CN 201820873570U CN 208518614 U CN208518614 U CN 208518614U
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- box cupling
- ocean
- insulated
- pipe
- heat
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Abstract
The utility model discloses a kind of ocean insulated tubing, including pipe, heat-insulated inner tube, box cupling, the setting thermal insulation layer among pipe and heat-insulated inner tube fills aeroge；Box cupling ontology, outer tube, box cupling annular groove, coupling inner thread are provided on its box cupling, wherein box cupling ontology is threadedly coupled by both ends with outer tube and injects aeroge in box cupling annular groove；It is provided with thermal insulation layer on box cupling, greatly reduces thermal loss herein, improves heat insulation, sealing shoulder is set, increases sealing thermal insulation effect and also improves bonding strength simultaneously, box cupling thermal insulation layer is using ontology and external pipe thread type of attachment, simple structure, maintenance Reusability easy to disassemble, save the cost.
Description
Technical field
The utility model relates to heavy crude heat extraction technical field, in particular to a kind of ocean insulated tubing.
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, and many oil-field thick-oil oil reservoirs have entered the steam soak middle and later periods, produces at high cost, deficiency in economic performance, steam
Development prospect of handling up allows of no optimist, and conversion regime is imperative.In recent years, fireflood has all been carried out in the oil fields such as triumph, Xinjiang, Liaohe River
It recovers the oil and tests and obtain effect.It is obtained through practice, fire flood is that a kind of heating power for increasing substantially recovery factor of heavy oil reservoir is adopted
Oil tech.It can continue to employ the remaining oil that steam soak exploitation can not exploit, potentiality are bigger, are the following heating exploitations
Effective substituted technique.
Insulated tubing is generally used for heavy crude thermal recovery steamed well, the loss of heat when it can effectively reduce steam injection, prevents
Only heat transfer is not damaged to casing and cementing concrete with protection sleeve pipe and cement sheath because of high temperature, while ensuring injection well
The mass dryness fraction of bottom steam improves heat injection effect.The matched box cupling of insulated tubing that thick oil thermal extraction uses at present does not have heat-insulated function
Can, when leading to the normal steam injection of thermal production well, there is very big heat loss at box cupling, reduces insulated tubing entirety to a certain extent
Heat-proof quality, correlation theory is research shows that the apparent heat conductivity at box cupling is 90 times of B grades of instlated tubulars or more, entire heat-insulated
In tubing string, the heat dissipation capacity at box cupling is maximum, therefore in same depth of stratum, the casing wall thermal stress and cement of box cupling near zone
The thermal stress of ring is there are maximum value, and oil well is after excessive round is handled up or after long-term hot fluid drive, and casing is in uneasiness herein
Total state.
With the development of thermal recovery technology on ocean, higher want is proposed safely with cementing quality to the casing of thermal production well
It asks, therefore, in order to further increase the integral heat-insulation property of heat injection tubing string, reduces heat loss when heat injection, increase injection oil reservoir
Enthalpy, it would be highly desirable to develop a kind of ocean insulated tubing.
Summary of the invention
The purpose of the utility model is to provide a kind of ocean insulated tubing, by improving the structure of junction, improve every
Effect is heated seal, it is made more to adapt to the hole condition of ocean thermal production well.
To realize the purpose of this utility model, the utility model provides a kind of ocean insulated tubing, including pipe, every
Setting thermal insulation layer among hot inner tube and box cupling, pipe and heat-insulated inner tube fills aeroge；On box cupling be provided with box cupling ontology,
Outer tube, box cupling annular groove, coupling inner thread, wherein box cupling ontology is threadedly coupled by both ends with outer tube and injects gas in box cupling annular groove
Gel.
Preferably, coupling inner thread tail portion is provided with interior sealing shoulder, and angle is 90 degree.
Preferably, pipe both ends have been symmetrical arranged external screw thread, and external screw thread front end is provided with external seal shoulder, angle 90
Degree.
Preferably, at work, it is engaged as internal and external threads rotate, inside and outside sealing shoulder comes into contact with until interference is matched
It closes, magnitude of interference=0.05-0.15mm.
Preferably, box cupling annular groove depth H=3-6m.
Preferably, pipe specification outer diameter D=73.0-139.7mm.
Compared with prior art, the beneficial effects of the utility model are,
1, it is provided with thermal insulation layer on box cupling, greatly reduces thermal loss herein, improves heat insulation；
2, it is provided with sealing shoulder, increases sealing thermal insulation effect and also improves bonding strength simultaneously；
3, box cupling thermal insulation layer use ontology and external pipe thread type of attachment, simple structure, maintenance Reusability easy to disassemble,
Save the cost.
Detailed description of the invention
Fig. 1 show the structural schematic diagram of the utility model；
Fig. 2 show the structural schematic diagram of the utility model box cupling；
In figure, 1- pipe, the heat-insulated inner tube of 2-, 3- box cupling, 4- thermal insulation layer, 5- aeroge, 6- external seal shoulder, 7- box cupling sheet
Body, 8- outer tube, 9- box cupling annular groove, 10- coupling inner thread, sealing shoulder in 12-, H- annular groove depth, D- specification outer diameter.
Specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that this place
The specific embodiment of description is only used to explain the utility model, is not used to limit the utility model.
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 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 2, the embodiment of the present application provides a kind of ocean insulated tubing, including pipe 1, heat-insulated inner tube
2 and box cupling 3, the setting thermal insulation layer 4 among pipe 1 and heat-insulated inner tube 2 fills aeroge 5；Box cupling ontology is provided on box cupling 3
7, outer tube 8, box cupling annular groove 9, coupling inner thread 10, wherein box cupling ontology 7 is threadedly coupled by both ends with outer tube 8 and in box cupling ring
Slot 9 injects aeroge.
Preferably, 10 tail portion of coupling inner thread is provided with interior sealing shoulder 12, and angle is 90 degree.
Preferably, 1 both ends of pipe have been symmetrical arranged external screw thread 4, and external screw thread front end is provided with external seal shoulder 6, angle
It is 90 degree.
Preferably, at work, it is engaged as internal and external threads rotate, inside and outside sealing shoulder comes into contact with until interference is matched
It closes, magnitude of interference=0.05-0.15mm.
Preferably, 9 depth Hs of box cupling annular groove=3-6m.
Preferably, 1 specification outer diameter D of pipe=73.0-139.7mm.
Compared with prior art, the beneficial effects of the utility model are,
1, it is provided with thermal insulation layer on box cupling, greatly reduces thermal loss herein, improves heat insulation；
2, it is provided with sealing shoulder, increases sealing thermal insulation effect and also improves bonding strength simultaneously；
3, box cupling thermal insulation layer use ontology and external pipe thread type of attachment, simple structure, maintenance Reusability easy to disassemble,
Save the cost.
The above is only the preferred embodiment of the utility model, it is noted that for the general of the art
For logical technical staff, without departing from the principle of this utility model, several improvements and modifications can also be made, these change
It also should be regarded as the protection scope of the utility model into retouching.
Claims (6)
1. a kind of ocean insulated tubing, which is characterized in that including pipe (1), heat-insulated inner tube (2) and box cupling (3), pipe
(1) aeroge (5) are filled with heat-insulated inner tube (2) intermediate setting thermal insulation layer；Box cupling ontology (7), outer tube are provided on box cupling (3)
(8), box cupling annular groove (9), coupling inner thread (10), wherein box cupling ontology (7) is threadedly coupled and is being connect by both ends with outer tube (8)
Garter spring slot (9) injects aeroge.
2. a kind of ocean insulated tubing according to claim 1, which is characterized in that the setting of coupling inner thread (10) tail portion
Interior sealing shoulder (12), angle are 90 degree.
3. a kind of ocean insulated tubing according to claim 2, which is characterized in that pipe (1) both ends are symmetrical arranged
External screw thread (4), external screw thread front end are provided with external seal shoulder (6), and angle is 90 degree.
4. a kind of ocean insulated tubing according to claim 3, which is characterized in that at work, with internal and external threads
Rotation engagement, inside and outside sealing shoulder comes into contact with until interference fit, magnitude of interference=0.05-0.15mm.
5. a kind of ocean insulated tubing according to claim 1, which is characterized in that box cupling annular groove (9) depth (H)=3-
6m。
6. a kind of ocean insulated tubing according to claim 1, which is characterized in that pipe (1) specification outer diameter (D)=
73.0-139.7mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820873570.5U CN208518614U (en) | 2018-06-07 | 2018-06-07 | A kind of ocean insulated tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820873570.5U CN208518614U (en) | 2018-06-07 | 2018-06-07 | A kind of ocean insulated tubing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208518614U true CN208518614U (en) | 2019-02-19 |
Family
ID=65324929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820873570.5U Active CN208518614U (en) | 2018-06-07 | 2018-06-07 | A kind of ocean insulated tubing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208518614U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108661570A (en) * | 2018-06-07 | 2018-10-16 | 盘锦辽河油田金环实业有限责任公司 | A kind of ocean insulated tubing |
| CN111594060A (en) * | 2020-07-13 | 2020-08-28 | 盘锦华晨石油装备制造有限公司 | Non-vacuum heat insulation oil pipe and production process thereof |
-
2018
- 2018-06-07 CN CN201820873570.5U patent/CN208518614U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108661570A (en) * | 2018-06-07 | 2018-10-16 | 盘锦辽河油田金环实业有限责任公司 | A kind of ocean insulated tubing |
| CN111594060A (en) * | 2020-07-13 | 2020-08-28 | 盘锦华晨石油装备制造有限公司 | Non-vacuum heat insulation oil pipe and production process thereof |
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