CN204129286U - A kind of for the optical cable under Oil/gas Well - Google Patents
A kind of for the optical cable under Oil/gas Well Download PDFInfo
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- CN204129286U CN204129286U CN201420369181.0U CN201420369181U CN204129286U CN 204129286 U CN204129286 U CN 204129286U CN 201420369181 U CN201420369181 U CN 201420369181U CN 204129286 U CN204129286 U CN 204129286U
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- stainless
- temperature resistant
- steel tube
- optical cable
- optical fiber
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Abstract
The utility model relates to a kind of for the optical cable under Oil/gas Well; this optical cable comprises cable core and is wrapped in the protective seam outside cable core; described protective seam comprises the stainless-steel tube outer jacket (1) fitted tightly, high temperature resistant intermediate protective layer (2) and stainless-steel tube sheath (3) from outside to inside; cable core comprises fine cream (4) and is filled in the high-temperature resistant optical fiber (5) in fine cream (4); and fine cream (4) contacts with stainless-steel tube sheath (3), high-temperature resistant optical fiber (5) does not contact with stainless-steel tube sheath (3).Optical cable of the present utility model has corrosion resistance, heat-resisting quantity and resistance to water logging, and hydrogen loss is lower, anti-vibration and the higher characteristic of collision resistance, namely this optical cable can adapt to high temperature under oil well, high pressure, water logging, hydrogen are invaded, collide and the needs of the rugged surroundings such as vibration, can at down-hole Long-Time Service, when using it for Fibre Optical Sensor, the Stability and veracity that Fibre Optical Sensor measures can be improved.
Description
Technical field
The utility model relates to a kind of for the optical cable under Oil/gas Well.
Background technology
In oil-gas mining process, Real-Time Monitoring is carried out to parameters such as Oil/gas Well downforce, temperature, be the physical state of hydrocarbon zone under understanding Oil/gas Well, optimize one of oil recovery technique scheme, the important measures improving the rate of oil and gas recovery and output.Traditional electrical type sensor cannot work under down-hole rugged environment such as high temperature, high pressure, the ground electrical interference of burn into earth magnetism, and Fibre Optical Sensor can overcome these difficulties, it is insensitive and can bear extreme condition to electromagnetic interference (EMI), comprise high temperature, high pressure (more than 30MPa) and strong shock and vibration, pit shaft and well site environmental parameter can be measured accurately.And Fibre Optical Sensor cross-sectional area is little, profile is short, takes up space in the wellbore little, has a wide range of applications in exploitation of oil-gas field process.
Optical cable, as the important component part in whole optical fiber sensing system, carries the task of signal transmission and carrying downhole optic fiber Sensor section weight.Multiple stainless protection layer is only provided with outside the cable core of optical cable conventional under current Oil/gas Well; and stainless protection layer is made up of stainless steel sleeve pipe; and stainless steel sleeve pipe be by short tube between welding formed; the joint of welding is not corrosion-resistant, non-watertight; in addition; reason due to stainless steel nature makes optical cable non-refractory and non-antidetonation; and environment under Oil/gas Well is very complicated and severe; therefore; when existing optical cable uses under Oil/gas Well; the life-span of optical cable is short, and when using it for Fibre Optical Sensor, the accuracy of mensuration is not high yet.Therefore, be badly in need of a kind of high temperature that can adapt under Oil/gas Well, high pressure, water logging, hydrogen are invaded, collide and the optical cable of the complicated rugged surroundings such as vibration, to improve the Stability and veracity that Fibre Optical Sensor measures.
Utility model content
The purpose of this utility model be overcome optical cable in prior art cannot adapt to Oil/gas Well under high temperature, high pressure, water logging, hydrogen invade, collide and the defect of the complicated rugged surroundings such as vibration, provide a kind of for the optical cable under Oil/gas Well.
To achieve these goals; the utility model provides a kind of for the optical cable under Oil/gas Well; this optical cable comprises cable core and is wrapped in the protective seam outside cable core; described protective seam comprises the stainless-steel tube outer jacket fitted tightly, high temperature resistant intermediate protective layer and stainless-steel tube sheath from outside to inside; described cable core comprises fine cream and is filled in the high-temperature resistant optical fiber in described fine cream; and described fine cream contacts with described stainless-steel tube sheath, described high-temperature resistant optical fiber does not contact with described stainless-steel tube sheath.
Preferably, described high temperature resistant intermediate protective layer is teflon protective seam or rubber cover.
Preferably, the surface of described high-temperature resistant optical fiber is also provided with polyimide coating layer, described high-temperature resistant optical fiber is contacted with fine cream by polyimide coating layer.
Preferably, the ratio of the radial thickness of described polyimide coating layer and the radius of described high-temperature resistant optical fiber is 1:0.5-2.
Preferably, the ratio between the radius of the radial thickness of the radial thickness of described stainless-steel tube outer jacket, described high temperature resistant intermediate protective layer, the radial thickness of described stainless-steel tube sheath, described cable core is 1:1-2:0.1-0.5:0.1-0.5.
Preferably, described stainless-steel tube outer jacket and described stainless-steel tube sheath are integrated structure.
Preferably, described high-temperature resistant optical fiber is the optical fiber of 1-8 core.
Preferably, described fine cream is the fine cream of anti-hydrogen loss.
Preferably, the fine cream of described anti-hydrogen loss is mixed by base oil, jelling agent and antioxidant.
Of the present utility model for the optical cable under Oil/gas Well; owing to adding high temperature resistant intermediate protective layer between stainless-steel tube protective seam; and optical fiber adopts high-temperature resistant optical fiber; this optical cable is not only made to have heat-resisting quantity; but also make this optical cable have corrosion resistance and resistance to water logging, and have that hydrogen loss is lower, anti-vibration and the higher characteristic of collision resistance.When stainless-steel tube outer jacket and stainless-steel tube sheath are formed in one structure; the resistance to compression of optical cable, waterproof and corrosion resistance can be improved further; when the high temperature resistant intermediate protective layer in optical cable adopts polytetrafluoroethylmaterial material; the heat-resisting quantity of optical cable can not only be improved further; the shock resistance of optical cable can also be improved further; in addition; when the surface coverage polyimide coating layer of high-temperature resistant optical fiber; the heat-resisting quantity of optical cable can be improved further; when fine cream adopts anti-hydrogen loss fibre cream, significantly hydrogen loss can be reduced.Therefore, optical cable of the present utility model has corrosion resistance, heat-resisting quantity and resistance to water logging, and hydrogen loss is lower, anti-vibration and the higher characteristic of collision resistance, namely this optical cable can adapt to high temperature under oil well, high pressure, water logging, hydrogen are invaded, collide and the needs of the rugged surroundings such as vibration, can at down-hole Long-Time Service, when using it for Fibre Optical Sensor, the Stability and veracity that Fibre Optical Sensor measures can be improved.
Other features and advantages of the utility model are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Fig. 1 be a kind of preferred implementation of the present utility model for the optical cable under Oil/gas Well.
Description of reference numerals
1 stainless-steel tube outer jacket; 2 high temperature resistant intermediate protective layers; 3 stainless-steel tube sheaths; 4 fine cream; 5 high-temperature resistant optical fibers.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
As shown in Figure 1; the utility model provides a kind of for the optical cable under Oil/gas Well; this optical cable comprises cable core and is wrapped in the protective seam outside cable core; protective seam comprises the stainless-steel tube outer jacket 1, high temperature resistant intermediate protective layer 2 and the stainless-steel tube sheath 3 that fit tightly from outside to inside; the high-temperature resistant optical fiber 5 that cable core comprises fine cream 4 and is filled in fine cream 4; and fine cream 4 contacts with stainless-steel tube sheath 3, high-temperature resistant optical fiber 5 does not contact with stainless-steel tube sheath 3.
In the utility model; as long as high temperature resistant intermediate protective layer 2 can play high temperature resistant and effect that is antidetonation; but; in order to improve the heat-resisting quantity of optical cable further and make optical cable have stronger shock resistance simultaneously; preferably; high temperature resistant intermediate protective layer 2 is teflon protective seam or rubber cover; wherein; teflon in teflon protective seam can be the polytetrafluoroethylplastic plastic of this area routine; rubber in rubber cover can be resistant to elevated temperatures rubber, such as can for working temperature is more than the ACM of 200 DEG C.
What it should be appreciated by those skilled in the art is that teflon itself has resistant to elevated temperatures characteristic, and it uses working temperature can reach 250 DEG C.
In the utility model, the core number of high-temperature resistant optical fiber 5 can core number needed for the routine of this area, and such as, high-temperature resistant optical fiber 5 can be the optical fiber of 1-8 core, is preferably the optical fiber of 4 cores.
In the utility model, high-temperature resistant optical fiber 5 can be the high-temperature resistant optical fiber of this area routine, the surface of this high-temperature resistant optical fiber 5 can cover resistant to elevated temperatures coat, also resistant to elevated temperatures coat can not be covered, preferably, the surface of high-temperature resistant optical fiber 5 is provided with resistant to elevated temperatures coat, further preferably, when the surface at high-temperature resistant optical fiber 5 being provided with polyimide coating layer (not shown), when high-temperature resistant optical fiber 5 is contacted with fine cream 4 by polyimide coating layer, the heat-resisting quantity of optical cable can be improved further, make the working temperature of optical cable up to 300 DEG C.Wherein, polyimide can be the conventional polyimide in this area.
In the utility model, the surface of high-temperature resistant optical fiber 5 is provided with polyimide coating layer and refers to and be respectively arranged with polyimide coating layer on the surface of each fiber cores.
In the utility model, the radial thickness of polyimide coating layer and the radius of high-temperature resistant optical fiber 5 can be the ratio of this area routine, such as, can be 1:0.5-2.
In the utility model, the radial thickness of stainless-steel tube outer jacket 1, the radial thickness of high temperature resistant intermediate protective layer 2, the radial thickness of stainless-steel tube sheath 3, ratio between the radius of cable core can be the specification ratio of this area routine, but, in order to improve the corrosion resistance of optical cable further, heat-resisting quantity and resistance to water logging, the low hydrogen loss of a step-down of going forward side by side, and more effectively anti-vibration and collision, preferably, the radial thickness of stainless-steel tube outer jacket 1, the radial thickness of high temperature resistant intermediate protective layer 2, the radial thickness of stainless-steel tube sheath 3, ratio between the radius of cable core is 1:1-2:0.1-0.5:0.1-0.5.
In the utility model, preferably, stainless-steel tube outer jacket 1 and stainless-steel tube sheath 3 are integrated structure, integrated structure refers to that stainless-steel tube outer jacket 1 and stainless-steel tube sheath 3 are single stainless-steel tube, do not need through welding fabrication, this integrated structure, the not resistance to water logging of short tube interface of welding can be overcome, the defect such as not corrosion-resistant, further increases corrosion resistance and the water tolerance of optical cable.Wherein, the concrete forming method of integrated structure can be the forming method of this area routine.
In the utility model, the stainless steel of stainless-steel tube outer jacket 1 and stainless-steel tube sheath 3 can be the stainless steel of this area routine, can be such as 316L, 825 and 13Cr at least one.
In the utility model, the fine cream that fine cream 4 can be commonly used for this area, but in order to strengthen the anti-hydrogen loss ability of optical cable further, preferably, the fine cream of anti-hydrogen loss selected by fine cream 4, wherein, as long as the fine cream of this anti-hydrogen loss can significantly improve anti-hydrogen loss ability, such as can by base oil, jelling agent and antioxidant mix, base oil, jelling agent and antioxidant are the conventional base oil for being mixed with the fine cream of anti-hydrogen loss in this area, jelling agent and antioxidant, anti-hydrogen loss ability required when its concrete kind and consumption can use according to reality carries out adjusting and choosing.
As mentioned above, according to preferred embodiment of the present utility model, the utility model provides following for the optical cable under Oil/gas Well, this optical cable comprises cable core and is wrapped in the protective seam outside cable core, protective seam comprises the stainless-steel tube outer jacket 1 fitted tightly from outside to inside, high temperature resistant intermediate protective layer 2 and stainless-steel tube sheath 3, the high-temperature resistant optical fiber 5 that cable core comprises fine cream 4 and is filled in fine cream 4, and fine cream 4 contacts with stainless-steel tube sheath 3, high-temperature resistant optical fiber 5 does not contact with stainless-steel tube sheath 3, wherein, high temperature resistant intermediate protective layer 2 is teflon protective seam or rubber cover, teflon protective seam is polytetrafluoroethylplastic plastic, high-temperature resistant rubber goods in rubber cover are the ACM of working temperature more than 200 DEG C.High-temperature resistant optical fiber 5 is the optical fiber of 1-8 core, the surface of high-temperature resistant optical fiber 5 is provided with resistant to elevated temperatures polyimide coating layer (not shown), the radial thickness of polyimide coating layer and the radius of high-temperature resistant optical fiber 5 are 1:0.5-2, the radial thickness of stainless-steel tube outer jacket 1, the radial thickness of high temperature resistant intermediate protective layer 2, the radial thickness of stainless-steel tube sheath 3, ratio between the radius of cable core is 1:1-2:0.1-0.5:0.1-0.5, stainless-steel tube outer jacket 1 and stainless-steel tube sheath 3 are integrated structure, stainless steel is 316L, 825 and 13Cr at least one, fine cream 4 is selected by base oil, the fine cream of the anti-hydrogen loss that jelling agent and antioxidant mix.
Therefore, optical cable of the present utility model has corrosion resistance, heat-resisting quantity and resistance to water logging, and hydrogen loss is lower, anti-vibration and the higher characteristic of collision resistance, namely this optical cable can adapt to high temperature under oil well, high pressure, water logging, hydrogen are invaded, collide and the needs of the rugged surroundings such as vibration, can at down-hole Long-Time Service, when using it for Fibre Optical Sensor, the Stability and veracity that Fibre Optical Sensor measures can be improved.
Below preferred implementation of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (8)
1. one kind for the optical cable under Oil/gas Well, it is characterized in that, this optical cable comprises cable core and is wrapped in the protective seam outside cable core, described protective seam comprises the stainless-steel tube outer jacket (1) fitted tightly from outside to inside, high temperature resistant intermediate protective layer (2) and stainless-steel tube sheath (3), described cable core comprises fine cream (4) and is filled in the high-temperature resistant optical fiber (5) in described fine cream (4), and described fine cream (4) contacts with described stainless-steel tube sheath (3), described high-temperature resistant optical fiber (5) does not contact with described stainless-steel tube sheath (3).
2. optical cable according to claim 1, is characterized in that, described high temperature resistant intermediate protective layer (2) is teflon protective seam or rubber cover.
3. optical cable according to claim 1, it is characterized in that, the surface of described high-temperature resistant optical fiber (5) is also provided with polyimide coating layer, and described high-temperature resistant optical fiber (5) is contacted with fine cream (4) by polyimide coating layer.
4. optical cable according to claim 3, is characterized in that, the ratio of the radial thickness of described polyimide coating layer and the radius of described high-temperature resistant optical fiber (5) is 1:0.5-2.
5. optical cable according to claim 1 and 2; it is characterized in that, the ratio between the radius of the radial thickness of described stainless-steel tube outer jacket (1), the radial thickness of described high temperature resistant intermediate protective layer (2), the radial thickness of described stainless-steel tube sheath (3), described cable core is 1:1-2:0.1-0.5:0.1-0.5.
6. optical cable according to claim 1, is characterized in that, described stainless-steel tube outer jacket (1) and described stainless-steel tube sheath (3) are integrated structure.
7. optical cable according to claim 1, is characterized in that, the optical fiber that described high-temperature resistant optical fiber (5) is 1-8 core.
8. optical cable according to claim 1, is characterized in that, described fine cream (4) is the fine cream of anti-hydrogen loss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420369181.0U CN204129286U (en) | 2014-07-04 | 2014-07-04 | A kind of for the optical cable under Oil/gas Well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420369181.0U CN204129286U (en) | 2014-07-04 | 2014-07-04 | A kind of for the optical cable under Oil/gas Well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204129286U true CN204129286U (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420369181.0U Expired - Fee Related CN204129286U (en) | 2014-07-04 | 2014-07-04 | A kind of for the optical cable under Oil/gas Well |
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| Country | Link |
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| CN (1) | CN204129286U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793304A (en) * | 2015-04-20 | 2015-07-22 | 中国海洋石油总公司 | Method for fixing optical fibers at port of optical cable and optical cable structure |
| CN107195382A (en) * | 2017-06-28 | 2017-09-22 | 中天电力光缆有限公司 | A kind of photoelectricity composite sensing optical cable suitable in coiled tubing |
| CN107290833A (en) * | 2017-08-10 | 2017-10-24 | 中天电力光缆有限公司 | A kind of twisted cable core oil well optical cable |
-
2014
- 2014-07-04 CN CN201420369181.0U patent/CN204129286U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793304A (en) * | 2015-04-20 | 2015-07-22 | 中国海洋石油总公司 | Method for fixing optical fibers at port of optical cable and optical cable structure |
| CN107195382A (en) * | 2017-06-28 | 2017-09-22 | 中天电力光缆有限公司 | A kind of photoelectricity composite sensing optical cable suitable in coiled tubing |
| CN107290833A (en) * | 2017-08-10 | 2017-10-24 | 中天电力光缆有限公司 | A kind of twisted cable core oil well optical cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150128 Termination date: 20180704 |
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| CF01 | Termination of patent right due to non-payment of annual fee |