CN207249198U - A kind of twisted cable core oil well optical cable - Google Patents
A kind of twisted cable core oil well optical cable Download PDFInfo
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- CN207249198U CN207249198U CN201720995135.5U CN201720995135U CN207249198U CN 207249198 U CN207249198 U CN 207249198U CN 201720995135 U CN201720995135 U CN 201720995135U CN 207249198 U CN207249198 U CN 207249198U
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- cable core
- optical fiber
- twisted
- optical
- oil well
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Abstract
The utility model discloses a kind of twisted cable core oil well optical cable; it is characterized in that; including twisted cable core and at least one layer of external metallization protecting tube; the external metallization protecting tube is wrapped in the twisted cable core; the twisted cable core includes an at least fiber unit and some metal monofilaments; some metal monofilaments and at least a fiber unit twists together, the fiber unit includes some optical fiber and optical fiber protection metal pipe, and the optical fiber protection metal pipe is wrapped in some optical fiber.The utility model has the advantages that：External metallization protecting tube, optical fiber protection metal pipe and metal monofilament are high-strength corrosion-resisting, high pressure resistant steel alloy, thus optical cable can long-term work at high temperature under high pressure；Fiber unit is twisted together with metal monofilament, and during long-term work, light optical fibre in optical cable is evenly distributed, and sliding and bottom optical fiber packing phenomenon will not occur；Cable core is twisted for fiber unit and stainless steel monofilament, can produce enough excess fiber lengths, have larger tensile strength.
Description
Technical field
It the utility model is related to cable configuration technical field, and in particular to a kind of twisted cable core oil well optical cable.
Background technology
Due to the reliability of monitoring data, the ease for use of data transfer, optical fiber sensing technology petroleum gas production,
Exploration Domain is using increasingly extensive.With the depth increase of oil/gas well, the temperature environment that optical fiber is born is also higher and higher.To adapt to
So high working environment, the Commercial fibers of existing different coating are to meet different temperature grade needs of work, such as room temperature
Optical fiber（85°C）, medium temperature optical fiber（150°C）, polyimides optical fiber（200°C, 300°C）, optical fiber of aluminizing（400°C）With plating golden light
It is fine（700°C）Deng.Common oil well optical cable is general by the way of one layer of protection metal pipe is further added by outside light unit, light list
Member and protection metal pipe are concentric structure.Optical fiber can be subject to exterior stretching should during in order to avoid due to metal heated expansion elongation
Power, the length of optical fiber is longer than the length of light unit in light unit, and the difference of the length between both is called " excess fiber length ".
Hydrogen fiber paste is inhaled in general filling in light unit, and the effect one of fiber paste is the damage that can stop hydrone and hydrogen molecule to optical fiber, separately
One effect is the stop slided to optical fiber in pipe or lifts, and optical fiber is evenly distributed in whole optical cable.Chinese real
With a kind of high-temperature oil well test optical fibre cables are disclosed in new patent specification ZL 200620168047.X, this optical cable is included not
Become rusty steel pipe, steel wire and steel wire clad, is provided with optical fiber in the fiber paste wherein in stainless steel tube, stainless steel tube and steel wire mutually twist
Close and connect, barrier effect is played in slip of the fiber paste in stainless steel tube to optical fiber, still, since optical fiber fiber paste is by macromolecule material
Material base oil is mixed with other chemical analysis additives, at present, disclosure satisfy that the high-temperature resistant optical fiber of 300 °C of long-term works is fine
Cream is not developed also.Therefore, when the operating temperature of oil well optical cable is more than 300 °C, fiber paste in this optical cable will be because
High temperature and melt, the optical fiber of middle position does not twist together with remaining optical fiber and steel wire, due to having lacked the stop of fiber paste
The dead weight reason of effect and optical fiber is lifted, the optical fiber of middle can be produced and fallen downwards during the long-time service of underground
Phenomenon, the consequence of this phenomenon is exactly that optical fiber is accumulated in the light unit of oil well optical cable bottom, and remaining length is excessive；And oil well optical cable leans on
Excess fiber length reduces even zero in the light unit on top near the ground.Oil well optical cable is if subjected to abnormal external force, easily makes at this time
Optical fiber into oil well top breaks fibre, causes optical fiber sensing system to be stopped.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of twisted cable core oil well optical cable.In twisted cable core, light
The outside diameter of unit is smaller than the outside diameter of conventional oil well optical cable, and twisted cable core is overall in the shape of a spiral, thus fiber unit inner fiber
Downward sliding phenomenon will not occur.
The technical solution adopted in the utility model is：
A kind of twisted cable core oil well optical cable, it includes twisted cable core and at least one layer of external metallization protecting tube, the outside
Metal protective pipe is wrapped in the twisted cable core, and the twisted cable core includes an at least fiber unit and some metal lists
Silk, some metal monofilaments and at least a fiber unit twists together, the fiber unit includes some optical fiber and light
Fine protection metal pipe, the optical fiber protection metal pipe are wrapped in some optical fiber.
Further, in the twisted cable core, wherein a metal monofilament is located at middle, residual metallic monofilament and optical fiber
Unit is stranded on the metal monofilament of middle.
Further, the overall structure in the shape of a spiral of twisted cable core.
Further, the external metallization protecting tube is made by the way of longitudinal tubing-welding.
Further, the optical fiber includes all kinds of sensing optical fiber, and maximum operating temperature is up to 700 DEG C.
Further, up to 700 DEG C, maximum underground proof pressure is the long-term maximum operating temperature of twisted cable core oil well optical cable
207MPa。
Further, the material of the external metallization protecting tube, optical fiber protection metal pipe and metal monofilament is corrosion-resistant
Alloy.
Further, the material of the external metallization protecting tube, optical fiber protection metal pipe and metal monofilament be 316L not
Become rusty steel.
The beneficial effects of the utility model are：1st, external metallization protecting tube, optical fiber protection metal pipe and metal monofilament are
High-strength corrosion-resisting, high pressure resistant steel alloy, thus optical cable can long-term work at high temperature under high pressure；2nd, fiber unit and metal monofilament
Twist together, during long-term work, light optical fibre in optical cable is evenly distributed, and sliding and bottom optical fiber packing phenomenon will not occur；3、
Cable core is twisted for fiber unit and metal monofilament, can produce enough excess fiber lengths, have larger tensile strength.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
Wherein：1st, fiber unit, 11, optical fiber, 12, optical fiber protection metal pipe, 2, metal monofilament, 3, external metallization protection
Pipe.
Embodiment
In order to deepen the understanding to the utility model, the utility model is made below in conjunction with drawings and examples further
It is described in detail, which is only used for explaining the utility model, does not form the restriction to scope of protection of the utility model.
As shown in Figure 1, a kind of twisted cable core oil well optical cable, including twisted cable core and one layer of external metallization protecting tube 3, it is exterior
Metal protective pipe 3 is coated on outside twisted cable core by the way of longitudinal tubing-welding, and twisted cable core includes a fiber unit 1
With six roots of sensation metal monofilament 2, wherein a metal monofilament 2 is arranged on middle, remaining five metal monofilaments 2 and fiber unit 1 are twisted
Outside the metal monofilament 2 of middle, fiber unit 1 includes some optical fiber 11 and optical fiber protection metal pipe 12, some optical fiber
11 proper alignments, outer wrapping optical fiber protection metal pipe 12, and optical fiber 11 is used for all kinds of sensings of the maximum operating temperature up to 700 DEG C
Optical fiber, the material of external metallization protecting tube 3, optical fiber protection metal pipe 12 and metal monofilament 2 is 316L stainless steels, optical cable can be made to exist
Long-term work under 700 DEG C of high temperature and the hyperbaric environment of 207MPa.
Claims (8)
1. a kind of twisted cable core oil well optical cable, it is characterised in that including twisted cable core and at least one layer of external metallization protecting tube, institute
State external metallization protecting tube and be wrapped in the twisted cable core, the twisted cable core includes an at least fiber unit and some gold
Belong to monofilament, some metal monofilaments and at least a fiber unit twists together, the fiber unit includes some optical fiber
With optical fiber protection metal pipe, the optical fiber protection metal pipe is wrapped in some optical fiber.
A kind of 2. twisted cable core oil well optical cable according to claim 1, it is characterised in that in the twisted cable core, wherein
A piece metal monofilament is located at middle, and residual metallic monofilament and fiber unit are stranded on the metal monofilament of middle.
3. a kind of twisted cable core oil well optical cable according to claim 1 or 2, it is characterised in that the twisted cable core is overall
Structure in the shape of a spiral.
4. a kind of twisted cable core oil well optical cable according to claim 1, it is characterised in that the external metallization protecting tube is adopted
It is made of the mode of longitudinal tubing-welding.
5. a kind of twisted cable core oil well optical cable according to claim 1, it is characterised in that the optical fiber includes all kinds of sensings
With optical fiber, maximum operating temperature is up to 700 DEG C.
6. a kind of twisted cable core oil well optical cable according to claim 1, it is characterised in that long-term maximum operating temperature is reachable
700 DEG C, maximum underground proof pressure is 207MPa.
A kind of 7. twisted cable core oil well optical cable according to claim 1, it is characterised in that the external metallization protecting tube,
The material of optical fiber protection metal pipe and metal monofilament is corrosion resisting alloy.
A kind of 8. twisted cable core oil well optical cable according to claim 1 or 7, it is characterised in that the external metallization protection
The material of pipe, optical fiber protection metal pipe and metal monofilament is 316L stainless steels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720995135.5U CN207249198U (en) | 2017-08-10 | 2017-08-10 | A kind of twisted cable core oil well optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720995135.5U CN207249198U (en) | 2017-08-10 | 2017-08-10 | A kind of twisted cable core oil well optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207249198U true CN207249198U (en) | 2018-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720995135.5U Active CN207249198U (en) | 2017-08-10 | 2017-08-10 | A kind of twisted cable core oil well optical cable |
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| CN (1) | CN207249198U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2017
- 2017-08-10 CN CN201720995135.5U patent/CN207249198U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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