CN206696483U - thermal recovery steam injection well distributed temperature measuring optical cable - Google Patents
thermal recovery steam injection well distributed temperature measuring optical cable Download PDFInfo
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- CN206696483U CN206696483U CN201720308510.4U CN201720308510U CN206696483U CN 206696483 U CN206696483 U CN 206696483U CN 201720308510 U CN201720308510 U CN 201720308510U CN 206696483 U CN206696483 U CN 206696483U
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- injection well
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Abstract
The utility model provides a kind of thermal recovery steam injection well distributed temperature measuring optical cable, the thermal recovery steam injection well distributed temperature measuring optical cable includes an at least high temperature optical fiber, multiply aramid fiber, first layer optical fiber stainless steel protection pipe, aluminium Baogang protective layer and second layer optical fiber stainless steel protection pipe, the multiply aramid fiber is protected the high temperature optical fiber wherein using canoe, the first layer optical fiber stainless steel protection pipe is located at the outer layer of the multiply aramid fiber, to protect the center line that the multiply aramid fiber and the high temperature optical fiber form, the aluminium Baogang protective layer is located at the outer layer of the first layer optical fiber stainless steel protection pipe, the second layer optical fiber stainless steel protection pipe is located at the outer layer of the aluminium Baogang protective layer.The thermal recovery steam injection well distributed temperature measuring optical cable have with excess fiber length control, can Reusability, high intensity, good airproof performance, corrosion-resistant, anti-hydrogen loss the advantages of, solve the problem that can not be tested caused by transmitting and gather to signal due to distributed optical cable self problem.
Description
Technical field
It the utility model is related to and be related to cable armor process technology, especially relate in a kind of petroleum industry development process
The armored optical cable of steam injection well Underground Distributed optical fiber temperature-measurement.
Background technology
Thick oil thermal extraction generally using injection high temperature, high steam, improves crude oil temperature, reduces viscosity of crude, increase it
Mobility, crude oil is set to flow into wellbore lift to the purpose on ground to reach.In injection process, vapor (steam) temperature is up to 370 DEG C, pressure
Power also can reach 22MPa so that be in a kind of environment of HTHP, while chemical attack, galvano-cautery etc. inside whole oil well
Test, also result in thermal production well underground adverse circumstances.Therefore for working in the logging system in such well, how in height
Under temperature, high pressure, corrosive environment, by downhole testing signal acquisition, be transferred on ground just turn into one of them important problem.
Optical fiber is a kind of total reflection principle using light in fiber made of glass or plastics and manufactured light conducts work
Tool.In daily life, conduction loss of the conduction loss than electricity in electric wire due to light in a fiber is much lower, therefore, light
Fibre is often used as the information transmission of long range.With the maturation of measuring techniques for optical fiber, distributed optical fiber temperature measurement technology is increasingly
It is more to be applied to oilfield monitoring field, the features such as stability, long-term effect and real-time that measuring techniques for optical fiber has by itself,
Through partly instead of conditional electronic monitoring technology, and as preferred oil well monitor method.
It is different that the armoured process of patent is published at present, ZL201520298388.8, ZL20062016804 7.X
Patent Deng based on is that the high-temperature oil well special type photoelectricity of the multi-point temp and pressure measxurement required for high-temperature oil well test meets survey
Optical cable is tried, outer layer is that multilayer steel wire is twisted into, and because sealing surface is rough, can not effectively be sealed, while also without using special
Excess length control technology.In patent ZL201520241188.9, ZL20111030014 1.1, optical cable uses multilayer sheathed structure, is
A kind of cable configuration for the multilayer being made up of optical cable outer layer, optical cable intermediate layer, optical cable internal layer fibre cream and optical fiber, but its optical fiber
It has been short of in terms of excess length control and in terms of protection.For this, we have invented a kind of new thermal recovery steam injection well distributed temperature measuring light
Cable, solves above technical problem.
Utility model content
The purpose of this utility model be to provide it is a kind of it is new with excess fiber length control, can Reusability, high intensity, sealing
Property good, corrosion-resistant, anti-hydrogen loss distributed optical fiber temperature measurement optical cable, solve due to distributed optical cable self problem to signal transmission and
The problem that can not be tested caused by collection.
The purpose of this utility model can be achieved by the following technical measures：Thermal recovery steam injection well distributed temperature measuring optical cable, should
Thermal recovery steam injection well distributed temperature measuring optical cable includes an at least high temperature optical fiber, multiply aramid fiber, first layer optical fiber stainless steel protection pipe,
Aluminium Baogang protective layer and second layer optical fiber stainless steel protection pipe, the multiply aramid fiber are protected the high temperature optical fiber using canoe
Wherein, the first layer optical fiber stainless steel protection pipe is located at the outer layer of the multiply aramid fiber, to protect the multiply aramid fiber and the high temperature
The center line of optical fiber composition, the aluminium Baogang protective layer are located at the outer layer of the first layer optical fiber stainless steel protection pipe, the second layer light
Fine stainless steel protection pipe is located at the outer layer of the aluminium Baogang protective layer.
The purpose of this utility model can be also achieved by the following technical measures：
The high temperature optical fiber uses single-mode fiber, carries out the transmission collection of distant signal and accurate well temperature testing, single mode
9-10 μm of optical fiber core diameter.
The external diameter of the first layer optical fiber stainless steel protection pipe is between 2.4-3.2mm.
The metallic aluminium wall thickness of the aluminium Baogang protective layer is in 0.85-1mm.
The second layer optical fiber stainless steel protection pipe uses 316l stainless steels, wall thickness 0.85-1mm, external diameter 6.35mm.
The thermal recovery steam injection well distributed temperature measuring optical cable also includes seal plug, the thermal recovery steam injection well distributed temperature measuring optical cable
End is welded using the method for the seal plug and cold welding, forms welding portion, realizes borehole thermal recovery steam injection well point
Cloth optical cable integrated sealing structure.
Thermal recovery steam injection well distributed temperature measuring optical cable in the utility model, using multiple layer metal sheathed structure, passes through aramid fiber
And multilayer pipe realizes excess fiber length control, high intensity, good airproof performance, corrosion resistant feature, at the same can Reusability reach reduction
Use cost, service life length.Wherein, high temperature optical fiber uses single-mode fiber, realizes the transmission collection of distant signal and accurate
Well temperature testing, 9-10 μm of single-mode fiber core diameter.First layer optical fiber stainless steel protection pipe, its external diameter are protected between 2.4-3.2mm
Protect optical fiber.Metallic aluminium wall thickness forms one layer of fine and close protective layer under 0.85-1mm, high-temperature condition, in metallic aluminum surface, effectively
The infiltration of hydrogen molecule is prevented, reduces the loss of optical fiber.Second layer optical fiber stainless steel protection pipe, using 316l stainless steels, wall
Thick 0.85-1mm, external diameter control the 6.35mm in standard.
Brief description of the drawings
Fig. 1 is the overall structure signal of a specific embodiment of thermal recovery steam injection well distributed temperature measuring optical cable of the present utility model
Figure；
Fig. 2 is thermal recovery steam injection well distributed temperature measuring cable armor schematic diagram in a specific embodiment of the present utility model.
Embodiment
To enable above and other objects, features and advantages of the present utility model to become apparent, it is cited below particularly go out preferably
Embodiment, and coordinate shown in accompanying drawing, it is described in detail below.
As shown in figure 1, Fig. 1 is the structure chart of thermal recovery steam injection well distributed temperature measuring optical cable of the present utility model.The thermal recovery is noted
Vapour well distributed temperature measuring optical cable is by multiply aramid fiber 1, high temperature optical fiber 2, first layer optical fiber stainless steel protection pipe 3, aluminium Baogang protective layer
4th, second layer optical fiber stainless steel protection pipe 5, tail end sealing plug 6, welding portion 7 etc. form, and concrete structure is as shown in Figure 1.Heat
It is the center line that multiply aramid fiber 1 forms with high temperature optical fiber 2, wherein high temperature optical fiber 2 to adopt steam injection well distributed temperature measuring optical cable innermost layer
At least one and more than one, multiply aramid fiber 1 is protected high temperature optical fiber 2 wherein using canoe, prevents that high temperature optical fiber 2 is non-
Stress under normal circumstances, generation accidental damage, realize the excess length control of high temperature optical fiber 2.It is immediately first layer optical fiber stainless steel
Protection pipe 3, its external diameter the main center line for protecting multiply aramid fiber 1 to be formed with high temperature optical fiber 2, prevent between 2.4-3.2mm
Its unexpected tension, limits the movement of its big displacement, causes bending and accidental damage that optical fiber is big, while also aid in multiply aramid fiber 1
Realize the excess length control of high temperature optical fiber 2.Followed by aluminium Baogang protective layer 4, hydrogen loss are to influence optical fiber service life and measuring accuracy
One of main factor, especially in the case of a high temperature, if in the case of being not added with protection, hydrogen loss will be more severe.Consider steam injection
Special circumstances, the traditional ointment such as be arranged vertically of well high temperature and high pressure environment and underground cable often do not have due protection effect
Fruit, this patent are protected using the metallic aluminium mode thickeied.Under high-temperature condition, one layer will soon be formed in metallic aluminum surface
Fine and close oxide layer, it can effectively prevent the infiltration of hydrogen molecule, reduce the loss of optical fiber.The metallic aluminium wall thickness of this patent exists
Between 0.85-1mm.Followed by second layer optical fiber stainless steel protection pipe, this is also outermost layer protective layer, using 316l stainless steels
It is processed, wall thickness 0.85-1mm, external diameter controls the 6.35mm in standard.The layer mainly plays multilayer knot inside protection optical cable
Structure, while more than critical external compressive resistance 30MPa.The other pipe is designed using big wall thickness, disclosure satisfy that what is removed in production process bears
Stress requirement, using 316l stainless steel materials, various corrosion can be effectively avoided, while big wall thickness also helps extension and uses the longevity
Order, the tube outer surface ensure that the smooth and sealing property of outer surface, greatly met using heat treatment and technique for grinding in addition
Various harsh seal requests in site crossing sealing, especially in steam injection process, high-temperature steam, which is once spilt, may cause weight
Big work safety accident.The equipment such as optical cable one end connection ground optical fiber main frame, the optical fiber other end is typically most beneath in oil well, its
Sealing means and sealing effectiveness determine the success or failure entirely tested, the method that this patent end uses tail end sealing plug 6 and cold welding
Welded, realize borehole thermal recovery steam injection well distribution optical cable integrated sealing structure, ensure that underground does not have leak source.
Accompanying drawing 2 is illustrated in detail between each Rotating fields of thermal recovery steam injection well distributed temperature measuring optical cable.High temperature optical fiber 2 uses single mode
Optical fiber, realize the transmission collection of distant signal and accurate well temperature testing, 9-10 μm of single-mode fiber core diameter.Thermal recovery steam injection well is distributed
The center line that formula temperature measuring optical cable innermost layer is multiply aramid fiber 1 to be formed with high temperature optical fiber 2, wherein high temperature optical fiber 2 be at least one and
More than one, multiply aramid fiber 1 is protected high temperature optical fiber 2 wherein using canoe.Protected followed by first layer optical fiber stainless steel
Pillar 3.Followed by 4 aluminium Baogang protective layers, hydrogen loss are to influence one of optical fiber service life and the main factor of measuring accuracy, especially
In the case of a high temperature, if in the case of being not added with protection, hydrogen loss will be more severe.Followed by second layer optical fiber stainless steel protection
Pipe 5, this is also outermost layer protective layer, is processed using 316l stainless steels, wall thickness 0.85-1mm, and external diameter is controlled in standard
6.35mm.Equipment, this patent ends such as optical cable one end connection ground optical fiber main frame use the side of tail end sealing plug 6 and cold welding
Method is welded, and forms welding portion 7, realizes borehole thermal recovery steam injection well distribution optical cable integrated sealing structure, is ensured
Underground does not have leak source.
Preferred embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model,
Every equivalent structure transformation made using the utility model description, it is included in patent protection model of the present utility model
In enclosing.
Claims (6)
1. thermal recovery steam injection well distributed temperature measuring optical cable, it is characterised in that the thermal recovery steam injection well distributed temperature measuring optical cable is included at least
A piece high temperature optical fiber, multiply aramid fiber, first layer optical fiber stainless steel protection pipe, aluminium Baogang protective layer and second layer optical fiber stainless steel
Protection pipe, the multiply aramid fiber are protected the high temperature optical fiber wherein using canoe, the first layer optical fiber stainless steel protection pipe
Positioned at the outer layer of the multiply aramid fiber, to protect the center line that the multiply aramid fiber and the high temperature optical fiber form, aluminium Baogang protection
Layer is located at the outer layer of the first layer optical fiber stainless steel protection pipe, and the second layer optical fiber stainless steel protection pipe is located at aluminium Baogang protection
The outer layer of layer.
2. thermal recovery steam injection well distributed temperature measuring optical cable according to claim 1, it is characterised in that the high temperature optical fiber uses
Single-mode fiber, carry out the transmission collection of distant signal and accurate well temperature testing, 9-10 μm of single-mode fiber core diameter.
3. thermal recovery steam injection well distributed temperature measuring optical cable according to claim 1, it is characterised in that the first layer optical fiber is stainless
The external diameter of steel protection pipe is between 2.4-3.2mm.
4. thermal recovery steam injection well distributed temperature measuring optical cable according to claim 1, it is characterised in that the aluminium Baogang protective layer
Metallic aluminium wall thickness is in 0.85-1mm.
5. thermal recovery steam injection well distributed temperature measuring optical cable according to claim 1, it is characterised in that the second layer optical fiber is stainless
Steel protection pipe uses 316l stainless steels, wall thickness 0.85-1mm, external diameter 6.35mm.
6. thermal recovery steam injection well distributed temperature measuring optical cable according to claim 1, it is characterised in that the thermal recovery steam injection well is distributed
Formula temperature measuring optical cable also includes seal plug, and the end of the thermal recovery steam injection well distributed temperature measuring optical cable uses the seal plug and cold welding
Method welded, form welding portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720308510.4U CN206696483U (en) | 2017-03-27 | 2017-03-27 | thermal recovery steam injection well distributed temperature measuring optical cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720308510.4U CN206696483U (en) | 2017-03-27 | 2017-03-27 | thermal recovery steam injection well distributed temperature measuring optical cable |
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| CN206696483U true CN206696483U (en) | 2017-12-01 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108172329A (en) * | 2017-12-22 | 2018-06-15 | 江苏中天科技股份有限公司 | A kind of oil well detection cable and its manufacturing method |
| CN115144966A (en) * | 2022-06-16 | 2022-10-04 | 上海电信工程有限公司 | Floating wire comparison method for reducing optical fiber connection loss " |
| CN115166918A (en) * | 2022-07-14 | 2022-10-11 | 中油奥博(成都)科技有限公司 | Sealing device for tail end of optical cable in sleeve and mounting method |
-
2017
- 2017-03-27 CN CN201720308510.4U patent/CN206696483U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108172329A (en) * | 2017-12-22 | 2018-06-15 | 江苏中天科技股份有限公司 | A kind of oil well detection cable and its manufacturing method |
| CN115144966A (en) * | 2022-06-16 | 2022-10-04 | 上海电信工程有限公司 | Floating wire comparison method for reducing optical fiber connection loss " |
| CN115144966B (en) * | 2022-06-16 | 2023-09-12 | 上海电信工程有限公司 | Floating line comparison method for reducing optical fiber splicing loss " |
| CN115166918A (en) * | 2022-07-14 | 2022-10-11 | 中油奥博(成都)科技有限公司 | Sealing device for tail end of optical cable in sleeve and mounting method |
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