CN207961915U - A kind of underground heat-insulated oil pipe - Google Patents
A kind of underground heat-insulated oil pipe Download PDFInfo
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- CN207961915U CN207961915U CN201820201054.8U CN201820201054U CN207961915U CN 207961915 U CN207961915 U CN 207961915U CN 201820201054 U CN201820201054 U CN 201820201054U CN 207961915 U CN207961915 U CN 207961915U
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- limiter
- oil pipe
- insulated
- oedoeagus
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Abstract
The utility model discloses a kind of underground heat-insulated oil pipe, including insulated tubing main body, the both ends of insulated tubing main body are respectively equipped with oedoeagus limiter, female end limiter；Insulated tubing main body is followed successively by oil pipe, high temperature resistance polyester resin primer layer, the first nano-pore instlated tubular felt, modified epoxy aluminium-glass fibre reinforced plastic outer protector and anti-aging gel coating resin from inside to outside.A kind of underground heat-insulated oil pipe disclosed by the utility model has heat insulation effect high, reduces gathering system heating furnace fuel oil energy consumption；The advantages that saving operating cost, carrying out remarkable benefit.
Description
Technical field
The utility model is related to oil extraction in oil field and gathering system, and in particular to a kind of underground heat-insulated oil pipe.
Background technology
The appearance of insulated tubing originates from the exploitation of heavy crude reservoir.Since steam drives, thermal loss is larger, and scholars exist
The eighties in last century starts the research for being dedicated to insulated tubing, the theory analysis by more than 30 years and optimization, gradually obtained compared with
For ideal wellbore heat mathematical model and have developed a variety of underground heat-insulated oil pipes.
Currently, common underground heat-insulated oil pipe mainly has two major class on the market；First, the vacuum heat-insulation for heavy crude reservoir
Oil pipe；Second is that the insulation oil pipe for common oil reservoir.
Vacuum heat-insulation oil pipe investment is high, manufacture difficulty is big, is leaked at and tubing coupling more demanding to the installation dimension of pit shaft
Heat is larger, it is also necessary to be further improved.
For common insulated tubing, typically oil-pipe external wall is kept the temperature or is sprayed insulating moulding coating, common guarantor
Adiabator and insulating moulding coating thermal coefficient are larger, are limited by borehole size, and cannot be blocked up, although making with certain heat preservation
With, but energy-saving effect is bad；And in oil well overhaul, since insulating layer is not bonded with pipe outer wall, by mechanical hoisting operation
Influence the de- pipe of insulating layer easily occur, it is damaged；The problems such as coating crack, part are fallen, it is larger to advanced optimize improved space.
Utility model content
Purpose of utility model：The problem of the utility model exists for the above-mentioned prior art makes improvement, i.e. this practicality is new
First purpose of type, which is to disclose, a kind of to be applicable in heavy crude well and is applicable in the energy-efficient, economic and environment-friendly of common oil well
The underground heat-insulated oil pipe of type.Oil field can greatly improve individual well well head oil temperature by the application of insulated tubing, reduce gathering system energy
Consumption saves development cost.Second purpose of the utility model is to disclose a kind of preparation method of underground heat-insulated oil pipe.
Technical solution：A kind of underground heat-insulated oil pipe, including oedoeagus limiter, female end limiter and insulated tubing main body, institute
One end that the mode that oedoeagus limiter is connected through a screw thread is fixedly arranged on the insulated tubing main body is stated, the female end limiter passes through
The mode of threaded connection is fixedly arranged on the other end of the insulated tubing main body；
Insulated tubing main body is followed successively by oil pipe, high temperature resistance polyester resin primer layer, the first nano-pore instlated tubular from inside to outside
Felt, modified epoxy aluminium-glass fibre reinforced plastic outer protector and anti-aging gel coating resin.
Further, the oedoeagus limiter includes two oedoeagus limiter shells and two the first nuts；
The radial section of the oedoeagus limiter shell is semicircle, and the appearance of arch is equipped in oedoeagus limiter case inside
It receives space, is equipped with the second nano-pore instlated tubular felt the inner wall of the accommodation space of arch is viscous；
The both ends of the oedoeagus limiter shell are equipped with the first external screw thread, and first external screw thread is interior with first nut
Screw thread is meshed.
Further, the female end limiter includes two female end limiter shells, the second nut and third nut；
The radial section of the female end limiter shell is semicircle, is set on the inside of female end limiter shell there are two not
It is viscous equipped with third nano-pore instlated tubular felt in the madial wall of the accommodation space of each arch with the accommodation space of the arch of diameter；
It is equipped with the second external screw thread, the internal thread phase of second external screw thread and the second nut in one end of female end limiter shell
Engagement；It is equipped with third external screw thread, the interior spiral shell of the third external screw thread and the third nut in the other end of female end limiter shell
Line is meshed.
Further, the first nano-pore instlated tubular felt be the super nano-pore instlated tubular felt of aeroge or ceramic nanofibers every
Heat pipe felt.
Further, the thermal coefficient of the super nano-pore instlated tubular felt of aeroge is 0.013~0.02W/m.K.
Further, the thermal coefficient of ceramic nanofibers instlated tubular felt is 0.010~0.015W/m.K.
A kind of preparation method of underground heat-insulated oil pipe, includes the following steps：
(1) processing of rust removing, derusting grade Sa2.5, subsequently into step (2) are carried out to oil pipe；
(2) female end limiter is installed in one end of oil pipe, subsequently into step (3)；
(3) oedoeagus limiter is installed in the other end of oil pipe, subsequently into step (4)；
(4) high temperature resistance polyester resin primer layer is formed in the outside brushing polyester resin priming paint of oil pipe, subsequently into step
(5)；
(5) it is glued in the outside of high temperature resistance polyester resin primer layer and sets the first nano-pore instlated tubular felt, subsequently into step
(6)；
(6) it is glued in the outside of the first nano-pore instlated tubular felt and sets modified epoxy fiberglass protective layer, modified epoxy fiberglass
The length of protective layer is adapted with oil pipe principal length, subsequently into step (7)；
(7) the outside of modified epoxy fiberglass protective layer brush anti-aging gel coat formed anti-aging gel coating resin to get to
Underground heat-insulated oil pipe.
Advantageous effect：A kind of underground heat-insulated oil pipe disclosed by the utility model has the advantages that：
1, heat insulation effect is high, reduces gathering system heating furnace fuel oil energy consumption；
2, operating cost is saved, remarkable benefit is carried out；
3, preparation process is simple, it is easy to accomplish large-scale production.
Description of the drawings
Fig. 1 is the structural schematic diagram of insulated tubing main body；
Fig. 2 is the decomposition diagram of oedoeagus limiter axial section；
Fig. 3 is the decomposition diagram of female end limiter axis profile；
Fig. 4 a~4g are a kind of flow diagram of the preparation method of underground heat-insulated oil pipe disclosed by the utility model；
Wherein：
The anti-aging gel coating resins of 1-
2- modified epoxy aluminium-glass fibre reinforced plastic outer protectors
3- the first nano-pore instlated tubular felts
4- high temperature resistance polyester resin primer layers
5- oil pipes
6- oedoeagus limiters
7- female end limiters
61- oedoeagus limiter shells
The first external screw threads of 62-
63- the second nano-pore instlated tubular felts
The first nuts of 64-
71- female end limiter shells
The second external screw threads of 72-
73- third nano-pore instlated tubular felts
74- third external screw threads
The second nuts of 75-
76- third nuts
Specific implementation mode：
Specific embodiment of the present utility model is described in detail below.
Specific embodiment 1
As shown in Figures 1 to 3, a kind of underground heat-insulated oil pipe, including oedoeagus limiter 6, female end limiter 7 and insulated tubing master
Body, the mode that oedoeagus limiter 6 is connected through a screw thread are fixedly arranged on one end of insulated tubing main body, and female end limiter 7 passes through screw thread
The mode of connection is fixedly arranged on the other end of insulated tubing main body；
It is heat-insulated that insulated tubing main body is followed successively by oil pipe 5, high temperature resistance polyester resin primer layer 4, the first nano-pore from inside to outside
Pipe felt 3, modified epoxy aluminium-glass fibre reinforced plastic outer protector 2 and anti-aging gel coating resin 1.
Further, oedoeagus limiter 6 includes two oedoeagus limiter shells 61 and two the first nuts 64；
The radial section of oedoeagus limiter shell 61 is semicircle, and the appearance of arch is equipped in 61 inside of oedoeagus limiter shell
It receives space, is equipped with the second nano-pore instlated tubular felt 63 the inner wall of the accommodation space of arch is viscous；
The both ends of oedoeagus limiter shell 61 are equipped with the first external screw thread 62, the interior spiral shell of the first external screw thread 62 and the first nut 64
Line is meshed.
Further, female end limiter 7 includes two female end limiter shells 71, the second nut 75 and third nut 76；
The radial section of female end limiter shell 71 is semicircle, is set there are two not in the inside of female end limiter shell 71
It is viscous equipped with third nano-pore instlated tubular felt 73 in the madial wall of the accommodation space of each arch with the accommodation space of the arch of diameter；
It is equipped with the second external screw thread 72 in one end of female end limiter shell 71, the second external screw thread 72 is interior with the second nut 75
Screw thread is meshed；It is equipped with third external screw thread 74, third external screw thread 74 and third nut in the other end of female end limiter shell 71
76 internal thread is meshed.
Further, the first nano-pore instlated tubular felt 3 is the super nano-pore instlated tubular felt of aeroge.Second nano-pore is heat-insulated
Pipe felt 63, third nano-pore instlated tubular felt 73 are also the super nano-pore instlated tubular felt of aeroge.
Further, the thermal coefficient of the super nano-pore instlated tubular felt of aeroge is 0.013~0.02W/m.K.Because of gas
The thermal coefficient of the super nano-pore instlated tubular felt of gel is extremely low, can substantially reduce the heat dissipation capacity of oil stream in oil pipe.
Modified epoxy aluminium-glass fibre reinforced plastic outer protector 2 is a kind of photosensitive high polymer resin film, and this film can be in meeting under ultraviolet light
Polymerisation occurs rapidly, and the short time becomes hard and smooth, forms the protective layer with higher force performance, can effectively prevent
Only due to lifting caused by mechanical injuries.
Using modified epoxy aluminium-glass fibre reinforced plastic outer protector 2, that is, meet destruction of colliding with caused by well construction operation process, and full
Friction destruction of the sufficient underground caused by due to gradient between insulated tubing and wellbore casing, is effectively protected the steady of thermal insulation layer
It is qualitative.
The modified epoxy aluminium-glass fibre reinforced plastic outer protector 2 of use has extremely strong anticorrosion properties, and oil jacket annular can be effectively prevent empty
Between H in oil gas2S and CO2Sour gas corrosion.
Using anti-aging gel coat 1, the service life of fiber glass epoxy outer jacket can be further increased.
As shown in Fig. 4 a~4g, a kind of preparation method of underground heat-insulated oil pipe includes the following steps：
(1) processing of rust removing is carried out to oil pipe, derusting grade meets《Steel surface handles surface cleanness before coating coating
Visual evaluation part 1：The steel surface of uncoated mistake and remove comprehensively the steel surface after original coating rusting grade and
Handle grade》Sa2.5 grades specified in (GB/T 8923.1-2011), subsequently into step (2)；
(2) female end limiter is installed in one end of oil pipe, subsequently into step (3)；
(3) oedoeagus limiter is installed in the other end of oil pipe, subsequently into step (4)；
(4) high temperature resistance polyester resin primer layer is formed in the outside brushing polyester resin priming paint of oil pipe, subsequently into step
(5)；
(5) it is glued in the outside of high temperature resistance polyester resin primer layer and sets the first nano-pore instlated tubular felt, subsequently into step
(6)；
(6) it is glued in the outside of the first nano-pore instlated tubular felt and sets modified epoxy fiberglass protective layer, modified epoxy fiberglass
The length of protective layer is adapted with oil pipe principal length；
(7) the outside of modified epoxy fiberglass protective layer brush anti-aging gel coat formed anti-aging gel coating resin to get to
Underground heat-insulated oil pipe.
Specific embodiment 2
It is roughly the same with specific embodiment 1, it differs only in：
First nano-pore instlated tubular felt 3 is ceramic nanofibers instlated tubular felt.Second nano-pore instlated tubular felt 63, third are received
Metre hole instlated tubular felt 73 is also ceramic nanofibers instlated tubular felt.
The thermal coefficient of ceramic nanofibers instlated tubular felt is 0.010~0.015W/m.K.Because ceramic nanofibers every
The thermal coefficient of heat pipe felt is extremely low, can substantially reduce the heat dissipation capacity of oil stream in oil pipe.
The embodiment of the utility model is elaborated above.But the utility model is not limited to above-mentioned implementation
Mode, technical field those of ordinary skill within the scope of knowledge, the utility model ancestor can also not departed from
It is made a variety of changes under the premise of purport.
Claims (4)
1. a kind of underground heat-insulated oil pipe, which is characterized in that including oedoeagus limiter, female end limiter and insulated tubing main body, institute
One end that the mode that oedoeagus limiter is connected through a screw thread is fixedly arranged on the insulated tubing main body is stated, the female end limiter passes through
The mode of threaded connection is fixedly arranged on the other end of the insulated tubing main body；
Insulated tubing main body is followed successively by oil pipe, high temperature resistance polyester resin primer layer, the first nano-pore instlated tubular felt, changes from inside to outside
Property fiber glass epoxy outer jacket and anti-aging gel coating resin.
2. a kind of underground heat-insulated oil pipe according to claim 1, which is characterized in that the oedoeagus limiter includes two sun
Hold limiter shell and two the first nuts；
The radial section of the oedoeagus limiter shell is semicircle, and the receiving that arch is equipped in oedoeagus limiter case inside is empty
Between, it is viscous equipped with the second nano-pore instlated tubular felt in the inner wall of the accommodation space of arch；
The both ends of the oedoeagus limiter shell are equipped with the first external screw thread, the internal thread of first external screw thread and first nut
It is meshed.
3. a kind of underground heat-insulated oil pipe according to claim 1, which is characterized in that the female end limiter includes two the moon
Hold limiter shell, the second nut and third nut；
The radial section of the female end limiter shell is semicircle, is set on the inside of female end limiter shell there are two different diameters
Arch accommodation space, be equipped with third nano-pore instlated tubular felt the madial wall of the accommodation space of each arch is viscous；
It is equipped with the second external screw thread in one end of female end limiter shell, the internal thread of second external screw thread and the second nut is mutually nibbled
It closes；It is equipped with third external screw thread, the internal thread of the third external screw thread and the third nut in the other end of female end limiter shell
It is meshed.
4. a kind of underground heat-insulated oil pipe according to claim 1, which is characterized in that the first nano-pore instlated tubular felt is airsetting
The super nano-pore instlated tubular felt of glue or ceramic nanofibers instlated tubular felt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820201054.8U CN207961915U (en) | 2018-02-06 | 2018-02-06 | A kind of underground heat-insulated oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820201054.8U CN207961915U (en) | 2018-02-06 | 2018-02-06 | A kind of underground heat-insulated oil pipe |
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| Publication Number | Publication Date |
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| CN207961915U true CN207961915U (en) | 2018-10-12 |
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ID=63737353
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820201054.8U Active CN207961915U (en) | 2018-02-06 | 2018-02-06 | A kind of underground heat-insulated oil pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302284A (en) * | 2018-02-06 | 2018-07-20 | 中国石油工程建设有限公司华北分公司 | A kind of underground heat-insulated oil pipe and preparation method thereof |
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2018
- 2018-02-06 CN CN201820201054.8U patent/CN207961915U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302284A (en) * | 2018-02-06 | 2018-07-20 | 中国石油工程建设有限公司华北分公司 | A kind of underground heat-insulated oil pipe and preparation method thereof |
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