CN203101683U - Well-logging sensor connector packaging apparatus suitable for temperature of 300 DEG and pressure of 50MPa - Google Patents
Well-logging sensor connector packaging apparatus suitable for temperature of 300 DEG and pressure of 50MPa Download PDFInfo
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- CN203101683U CN203101683U CN 201320036408 CN201320036408U CN203101683U CN 203101683 U CN203101683 U CN 203101683U CN 201320036408 CN201320036408 CN 201320036408 CN 201320036408 U CN201320036408 U CN 201320036408U CN 203101683 U CN203101683 U CN 203101683U
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- optical fiber
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Abstract
A well-logging sensor connector packaging apparatus suitable for temperature of 300 DEG and pressure of 50 MPa is characterized by comprising an optical fiber sensor, a sensing optical cable and an optical cable pressing sleeve; the optical fiber sensor includes an extended first optical fiber stub; the sensing optical cable penetrates through the optical cable pressing sleeve, and an extension portion of the sensing optical cable serves as a second optical fiber stub; tails ends of the first optical fiber stub and the second optical fiber stub are fixedly connected, and an optical fiber stub portion near a connection point only includes an optical fiber core and cladding; and a sealing sleeve having an inner diameter larger than a complete optical fiber outer diameter integrally covers all the peripheries of the first optical fiber stub and the second optical fiber stub, and thus optical fiber redundancy space is formed between the sealing sleeve and the connection point. According to the well-logging sensor connector packaging apparatus, since a coating layer is peeled from the optical cable nearby the optical fiber connection point and the optical fiber redundancy space is formed, an optical fiber joint is thus free from effect of an external force and a stress, and the connection point is thus effectively protected; and a joint of the sensing sensor and the sensing optical cable is guaranteed to have good mechanical strength and bending resistance.
Description
Technical field
The utility model belongs to the communications field, relates to a kind of logging sensor that is suitable for temperature 300 degree, pressure 50MPa and connects packaging system.
Background technology
Optical fiber sensing technology is to follow the development of Fibre Optical Communication Technology the seventies in 20th century and the novel sensing technology that develops rapidly.More external developed countries acquire a great achievement to the applied research of optical fiber sensing technology, and many optical fiber sensing systems are practicability, becomes the commodity that substitute traditional sensors.
The typical structure of optical fiber is a kind of elongated multilayer coaxial cylindrical entity composition fiber.Be from inside to outside: fibre core (sandwich layer) → covering → coat.The core is fibre core and covering, and the two constitutes dielectric optical waveguide jointly, forms conduction and constraint to light signal, realizes the transmission of light, so again the optical fiber of the two formation is called bare fibre.Because of the principal ingredient of bare fibre is a silicon dioxide, it is a kind of fragility friable material, and bending resistance is poor; poor toughness for improving the microbend performance of optical fiber, applies one deck polymeric coating layer usually again; coat claims coating again, is one deck polymeric coating layer, mainly provides mechanical protection to bare fibre.
In the Oilfield developing process, people need know that in production fluid or the injecting process about the holding property of in-hole fluid and the particulars of state, this will use oil well logging, and its reliability and accuracy are most important.And traditional electronic sensor can't be worked under down-hole rugged environment such as high temperature, high pressure, the ground electrical interference of burn into earth magnetism.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 tens MPas) and strong impact and vibration, can measure pit shaft and well site environmental parameter accurately, simultaneously, Fibre Optical Sensor has the distributed measurement ability, can measure measured space distribution, provides profile information.And the Fibre Optical Sensor cross-sectional area is little, and profile is short, and it is minimum to take up space in pit shaft.
Be convenient transmission data, Fibre Optical Sensor is connected with fiber optic tap being connected with sensing optic cable, and conventional art adopts after the direct welding in the connected mode of junction coating one deck hermetically sealed case, and the junction bad mechanical strength is a little less than the bend resistance ability.
The utility model content
For overcoming conventional art in optical cable sensor and sensing optic cable junction bad mechanical strength, the technological deficiency that the bend resistance ability is weak, the utility model provides a kind of temperature 300 degree, pressure 50MPa(MPa of being suitable for) logging sensor connect packaging system.
The logging sensor that is suitable for temperature 300 degree, pressure 50MPa described in the utility model connects packaging system, comprise Fibre Optical Sensor, sensing optic cable and optical cable gland, Fibre Optical Sensor, comprise first fiber optic tap that stretches out, described sensing optic cable passes the optical cable gland, and extension is second fiber optic tap;
Described first fiber optic tap, the second fiber optic tap end are fixedly connected; Described first fiber optic tap and the second fiber optic tap periphery are coated with the sealing shroud of internal diameter greater than near the optical fiber external diameter tie point, thereby form the redundant optical fiber space between sealing shroud and tie point.
Preferably, also comprise the protection overcoat that is enclosed within outside the tie point.
Further, described protection lagging material is a teflon.
Preferably, described tie point also is coated with the protection resin outward.
Further, described protection resin is a polyimide resin.
Preferably, described sealing shroud comprises sealed liner and the hermetically sealed case that is enclosed within the sealed liner outside.
Preferably, the length in described redundant optical fiber space and the sensing optic cable length that is connected are than being 1:1.2 to 1:1.5.
Preferably, also comprise being positioned at sealing shroud, sealing shroud is sealed sensor nut and the gasket seal that is locked on the sensor near sensor one end.
Preferably, also comprise the optical cable cassette chuck of clamping optical cable gland and the optical cable set nut of fastening optical cable cassette chuck.
Adopt the logging sensor of temperature 300 degree, pressure 50MPa environment that is applicable to described in the utility model to connect packaging system, near the optical fiber tie point optical cable has been peeled off coating, form a redundant optical fiber space, can allow fibre-optical splice not be subjected to the effect of external force and stress, effectively protect tie point; The joint that guarantees sensor/sensor and sensing optic cable has excellent mechanical intensity and bend resistance ability.
Description of drawings
Fig. 1 illustrates the logging sensor that is suitable for temperature 300 degree, pressure 50MPa described in the utility model and connects a kind of specific implementation of packaging system;
The Reference numeral name is called among each figure: 1. Fibre Optical Sensor, 2. sensor pressure cap, 3. gasket seal; 4. sensor nut, 5. first fiber optic tap, 6. second fiber optic tap; 7. tie point is 8. protected resin bed, 9. the protection overcoat; 10. redundant optical fiber space, 11. hermetically sealed cases, 12. sealed liners, 13. optical cable gland bayonet sockets; 14. the optical cable gland, 15. optical cable cassette chucks, 16. sealant layers; 17. the optical cable set nut, the sensing optic cable length that 18. sensing optic cable A. connect.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
The logging sensor that is suitable for temperature 300 degree, pressure 50MPa described in the utility model connects packaging system, comprise Fibre Optical Sensor 1, sensing optic cable 18 and optical cable gland 14, Fibre Optical Sensor comprises first fiber optic tap 5 that stretches out, described sensing optic cable passes optical cable gland 14, and extension is second fiber optic tap 6;
Described first fiber optic tap 5, second fiber optic tap 6 are terminal fixedly connected; Described first fiber optic tap 5 and second fiber optic tap, 6 peripheries are coated with the sealing shroud of internal diameter greater than near the optical fiber external diameter tie point, thereby form redundant optical fiber space 10 between sealing shroud and tie point.
Directly coat the connected mode of one deck sealing shroud after the traditional fiber connection employing welding again in the junction, the junction bad mechanical strength is a little less than the bend resistance ability.The utility model the junction adopt internal diameter greater than tie point near the sealing shroud of optical fiber external diameter, make and form a redundant optical fiber space between sealing shroud and the tie point.When the junction sealing shroud is subjected to external force deformation, because the existence in redundant optical fiber space, the distortion of sealing shroud can not be directly delivered to inner fiber optic tap junction, and the redundant optical fiber space makes the deformable allowed band of junction increase, and has improved the physical strength and the bend resistance ability of junction.
The sealing shroud of internal diameter greater than the optical fiber external diameter can be adopted in structure redundant optical fiber space, but it is preferred, can adopt internal diameter and the identical hermetically sealed case of complete optical fiber external diameter, simultaneously near the fiber optic tap the tie point is partly peeled off, whole coats be can peel off and fiber core and covering only kept, also can be as required, the released part coat constitutes the redundant optical fiber space of different-thickness.
According to different fibre diameters and redundant optical fiber space external diameter, the redundant optical fiber space length is provided with difference, utility model people is through overtesting, when the length in discovery redundant optical fiber space is 1:1.2 to 1:1.5 with the sensing optic cable length ratio that is connected, the bend resistance performance and the sealing property of junction are preferable, further, when above-mentioned length ratio is 1:1.3, obtain best practical function.The so-called sensing optic cable length that connects is that the close sensing optic cable end face in redundant optical fiber space is to the distance of optical cable gland away from the redundant optical fiber space, as the distance A that indicates in the accompanying drawing.
For further improving the mechanical property of optical fiber tie point; can also outside tie point, put protecting sheathing; teflon (being commonly called as Teflon) has sealing, high lubricated not viscosity, electrical insulating property and good ageing resistance, heatproof excellence (can long-term work under+250 ℃ to-180 ℃ temperature), and the people is not had toxicity.The thinner thickness of protecting sheathing is generally 0.1 to 0.5 millimeter, and length is arranged on the 25-50 millimeter, to keep the pliability of junction.
Put protecting sheathing again after can also coating the protection resin outside the tie point in advance, with the protection tie point, preferably use polyimide resin, polyimide resin extensively applies to cable optic fibre as insullac, also is a kind of good high-temperature resistant coating simultaneously.
Below provide an embodiment of the present utility model:
After above-mentioned fused fiber splice and protection work are finished, between the pressure cap 2 of Fibre Optical Sensor and optical cable gland 14, install sealed liner 12, then hermetically sealed case 11 is installed in sealed liner 12 outsides, sensing optic cable is terminal to be clamped with optical cable cassette chuck, fastening sensor nut 4 and the optical cable set nut 17 that passes optical cable cassette chuck 15, sensing optic cable and hermetically sealed case is fastening; On optical cable gland bayonet socket 13, carry out repeatedly roll extrusion sealing then.
Hermetically sealed case is installed in outside the welding point, and corrosion resistivity is had relatively high expectations, and the hermetically sealed case outside surface can be smeared corrosion-resistant coating.Sealed liner then requires good mechanical property, and material capability should be better than hermetically sealed case, if same material, then the thickness of sealed liner is usually greater than hermetically sealed case thickness.
Sensor pressure cap 2, optical cable gland 14, sealed liner 12, hermetically sealed case 11, sensor nut 4, optical cable set nut 17 for the trade mark is 304, in 304L or 306 the steel any one.
Described optical cable gland 14, Fibre Optical Sensor metallic gasket 3 materials are through 45# steel, Cr after modified
12, Cr
12Any one of MoV or other mould steel.Cr12 is the high carbon and chromium ledeburite steel, and Cr12MoV is the GB title of steel industry, refers to meet the steel of this standard here, and the hardness behind Cr12MoV mould steel quenching degree, the Q-tempering, intensity, toughness all are better than the CR12 steel.What is called is modified to be the known technology of steel field of smelting, refers to quenching+high tempering; Just quench earlier, carry out high tempering after the quenching again and get final product.Modified fundamental purpose is to obtain all reasonable comprehensive mechanical performance of intensity, plasticity.
Optical fiber in sensor fibre described in the utility model and the Fibre Optical Sensor be applicable to common multimode, single-mode fiber, polyimide coated fiber, coating metal optical fiber any one or multiple.
The utility model can guarantee that by multiple protective the joint of Fibre Optical Sensor and sensing optic cable has excellent mechanical intensity and bend resistance ability; Move by repeatedly sealing in the space that can guarantee that optical fiber can remain on independently in sensor/sensor and the sensing optic cable, completely cut off, because its good isolation performance effectively prolongs the serviceable life of optical cable and sensor, allow long-term, the continual mensuration plane that is operated in of test macro.
All metal materials all adopt the processing of the stronger metal of resistance to corrosion in this device, and the foregoing trade mark is 304,304L or 306 steel, and through 45# steel, Cr after modified
12, Cr
12Materials such as MoV or other mould steel are highly resistant to complicated, stronger corrosion environment under the oil well; The redundant optical fiber space that forms through unique design can allow fibre-optical splice not be subjected to the effect of external force and stress, effectively protects the welding point.
Because this device has excellent sealing performance under long term high temperature, can be anti-up to 300 ℃ of high temperature, anti-10000N with upper pulling force, anti-50MPa, even 100MPa can tackle complex operating environment under the oil well with upward pressure, excellent properties such as anticorrosive; This device is applicable to be measured the environmental parameter in pit shaft and well site in the environment of very severe such as oil well vapour well and transmits coherent signal (as the liquid level face degree of depth etc.), and can accurately measure, expanded the application of Fibre Optical Sensor, can to exploration drill through work provide lasting, for a long time, measurement parameter accurately.
Previously described is each preferred embodiment of the present utility model; preferred implementation in each preferred embodiment is if not obviously contradictory or be prerequisite with a certain preferred implementation; each preferred implementation stack combinations is arbitrarily used; concrete parameter among described embodiment and the embodiment only is the utility model proof procedure for clear statement utility model inventor; be not in order to limit scope of patent protection of the present utility model; scope of patent protection of the present utility model still is as the criterion with its claims; the equivalent structure that every utilization instructions of the present utility model and accompanying drawing content are done changes, and in like manner all should be included in the protection domain of the present utility model.
Claims (10)
1.
The logging sensor that is suitable for temperature 300 degree, pressure 50MPa connects packaging system, comprises Fibre Optical Sensor
Device (1), sensing optic cable (18) and optical cable gland (14), Fibre Optical Sensor (1) comprise first fiber optic tap (5) that stretches out, and described sensing optic cable (18) passes optical cable gland (14), and extension is second fiber optic tap (6);
It is characterized in that: described first fiber optic tap (5), second fiber optic tap (6) are terminal fixedly connected, and described first fiber optic tap (5) and second fiber optic tap (6) periphery are coated with the sealing shroud of internal diameter greater than near the optical fiber external diameter tie point, thereby form redundant optical fiber space (10) between sealing shroud and tie point.
2. the logging sensor that is suitable for temperature 300 degree, pressure 50MPa according to claim 1 connects packaging system, it is characterized in that: also comprise being enclosed within the outer protection overcoat (9) of tie point.
3. connect packaging system as the logging sensor that is suitable for temperature 300 degree, pressure 50MPa as described in the claim 2, it is characterized in that: described protection overcoat (9) material is a teflon.
4. the logging sensor that is suitable for temperature 300 degree, pressure 50MPa according to claim 1 connects packaging system, and it is characterized in that: described tie point is protected resin bed (8) outward in addition.
5. connect packaging system as the logging sensor that is suitable for temperature 300 degree, pressure 50MPa as described in the claim 4, it is characterized in that: described protection resin bed (8) is a polyimide resin.
6. the logging sensor that is suitable for temperature 300 degree, pressure 50MPa according to claim 1 connects packaging system, it is characterized in that: described sealing shroud comprises sealed liner (12) and is enclosed within the hermetically sealed case (11) of sealed liner outside.
7. the logging sensor that is suitable for temperature 300 degree, pressure 50MPa according to claim 1 connects packaging system, and it is characterized in that: near the optical fiber the described tie point only comprises fiber core and covering.
8. the logging sensor that is suitable for temperature 300 degree, pressure 50MPa according to claim 1 connects packaging system, it is characterized in that: the length in described redundant optical fiber space (10) is 1:1.2 to 1:1.5 with the sensing optic cable length that is connected ratio.
9. the logging sensor that is suitable for temperature 300 degree, pressure 50MPa according to claim 1 connects packaging system, it is characterized in that: also comprise being positioned at sealing shroud, sealing shroud is sealed sensor nut (4) and the gasket seal (3) that is locked on the Fibre Optical Sensor near Fibre Optical Sensor one end.
10. the logging sensor that is suitable for temperature 300 degree, pressure 50MPa according to claim 1 connects packaging system, it is characterized in that: also comprise the optical cable cassette chuck (15) of clamping optical cable gland and the optical cable set nut (17) of fastening optical cable cassette chuck (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320036408 CN203101683U (en) | 2013-01-24 | 2013-01-24 | Well-logging sensor connector packaging apparatus suitable for temperature of 300 DEG and pressure of 50MPa |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320036408 CN203101683U (en) | 2013-01-24 | 2013-01-24 | Well-logging sensor connector packaging apparatus suitable for temperature of 300 DEG and pressure of 50MPa |
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| Publication Number | Publication Date |
|---|---|
| CN203101683U true CN203101683U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320036408 Withdrawn - After Issue CN203101683U (en) | 2013-01-24 | 2013-01-24 | Well-logging sensor connector packaging apparatus suitable for temperature of 300 DEG and pressure of 50MPa |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203101683U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064153A (en) * | 2013-01-24 | 2013-04-24 | 四川汇源光通信有限公司 | Well logging sensor connection packaging device suitable for temperature of 300 DEG C and pressure of 50MPa |
-
2013
- 2013-01-24 CN CN 201320036408 patent/CN203101683U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064153A (en) * | 2013-01-24 | 2013-04-24 | 四川汇源光通信有限公司 | Well logging sensor connection packaging device suitable for temperature of 300 DEG C and pressure of 50MPa |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130731 Effective date of abandoning: 20150930 |
|
| RGAV | Abandon patent right to avoid regrant |