CN117741879A - Optical cable connecting device for oil well - Google Patents
Optical cable connecting device for oil well Download PDFInfo
- Publication number
- CN117741879A CN117741879A CN202311735085.3A CN202311735085A CN117741879A CN 117741879 A CN117741879 A CN 117741879A CN 202311735085 A CN202311735085 A CN 202311735085A CN 117741879 A CN117741879 A CN 117741879A
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- joint
- optical cable
- seal
- cavity
- oil well
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- 230000003287 optical effect Effects 0.000 title claims abstract description 106
- 239000003129 oil well Substances 0.000 title claims abstract description 50
- 230000001681 protective effect Effects 0.000 claims abstract description 65
- 238000007789 sealing Methods 0.000 claims abstract description 52
- 238000005520 cutting process Methods 0.000 claims abstract description 42
- 238000012360 testing method Methods 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 230000004927 fusion Effects 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000013307 optical fiber Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Mechanical Coupling Of Light Guides (AREA)
Abstract
The invention relates to the technical field of optical cable connection tools, in particular to an optical cable connection device for an oil well, which comprises a first cutting ferrule seal, a first sealing joint, an upper joint, an outer protective sleeve, a second sealing joint and a fourth cutting ferrule seal which are connected in sequence; the first inner cavity is arranged in the first sealing joint, the second cutting ferrule seal is arranged in the first inner cavity, the second inner cavity is arranged in the outer protective sleeve, the inner protective sleeve joint and the locking joint are sequentially connected in the second inner cavity, the cavity is arranged in the inner protective sleeve, the third inner cavity is arranged in the second sealing joint, the third cutting ferrule seal is arranged in the third inner cavity, wherein the first optical cable sequentially penetrates through the first cutting ferrule seal, the second cutting ferrule seal and the upper joint to be arranged in the cavity, and the second optical cable sequentially penetrates through the fourth cutting ferrule seal, the third cutting ferrule seal, the locking joint and the inner protective sleeve joint to be arranged in the cavity. By using the optical cable connecting device for the oil well, the optical cable in the oil well can be quickly connected in practical application.
Description
Technical Field
The invention relates to the technical field of optical cable connection tools, in particular to an optical cable connection device for an oil well.
Background
The optical cable monitoring technology has the characteristics of high temperature resistance, corrosion resistance and high stability, and has wide requirements in oilfield production tests. The implementation and popularization of the optical cable temperature measurement technology, the optical cable pressure measurement technology, the optical cable underground water content measurement technology and the optical cable underground flow measurement technology which are urgently needed at present all need mature optical cable field construction technology. When the problems of relative sliding of optical cable steel pipes, optical cable breakage, sealing failure and the like occur in the optical cable field construction process, two sections of optical cables are usually required to be connected. The existing optical cable connecting process has the problems of complex construction, great environmental influence and easy re-fracture after connection, and seriously influences the construction efficiency of the optical cable.
Accordingly, there is a need for an optical cable connection device for oil wells to solve the above problems.
Disclosure of Invention
The invention aims to solve the problems that the existing optical cable connecting technology is complex in construction, greatly influenced by environment and easy to fracture again after connection, and provides an optical cable connecting device for an oil well.
In order to achieve the above object, the present invention provides an optical cable connection device for an oil well, which includes a first ferrule seal, a first sealing joint, an upper joint, an outer protective sleeve, a second sealing joint and a fourth ferrule seal connected in sequence;
the optical fiber cable is characterized in that a first inner cavity is arranged in the first sealing joint, a second cutting sleeve seal is arranged in the first inner cavity, a second inner cavity is arranged in the outer protective sleeve, an inner protective sleeve joint and a locking joint are sequentially connected in the second inner cavity, a cavity is arranged in the inner protective sleeve, a third inner cavity is arranged in the second sealing joint, a third cutting sleeve seal is arranged in the third inner cavity, wherein a first optical cable sequentially penetrates through the first cutting sleeve seal, the second cutting sleeve seal and the upper joint are arranged in the cavity, and a second optical cable sequentially penetrates through the fourth cutting sleeve seal, the third cutting sleeve seal, the locking joint and the inner protective sleeve joint are arranged in the cavity.
Preferably, the first sealing joint and the second sealing joint are provided with sealing test holes.
Preferably, the upper and lower ends of the second ferrule seal are abutted with the inner wall of the first inner cavity, the inner protective sleeve joint and the upper and lower ends of the locking joint are abutted with the inner wall of the second inner cavity, and the upper and lower ends of the third ferrule seal are abutted with the inner wall of the third inner cavity.
Preferably, one end of the inner protective sleeve is in threaded connection with the upper joint.
Preferably, a first split ring is provided between the inner protective sheath and the upper joint.
Preferably, a second split ring is arranged between the inner protective sleeve joint and the locking joint.
Preferably, the cross-sectional diameter of the cavity is greater than the diameter of the fused core of the fiber optic cable.
Preferably, the first ferrule seal, the first sealing joint, the second ferrule seal, the upper joint, the outer protective sheath, the inner protective sheath joint, the locking joint, the second sealing joint, the third ferrule seal, and the fourth ferrule seal are all made of metal.
Preferably, the metal is stainless steel.
Preferably, the optical cable is sequentially provided with an outer layer steel tube, an inner layer steel tube and a fusion fiber core from outside to inside.
According to the technical scheme, based on the optical cable connecting device for the oil well, the first optical cable sequentially passes through the first clamping sleeve seal, the second clamping sleeve seal and the upper connector to be arranged in the cavity, the second optical cable sequentially passes through the fourth clamping sleeve seal, the third clamping sleeve seal, the locking connector and the inner protective sleeve connector to be arranged in the cavity, and the optical cable connecting device is welded in the cavity under the action of fusion welding equipment, so that the connecting efficiency of the optical cable of the oil well can be effectively improved, the optical cable is prevented from being easily broken again in the oil well environment, and meanwhile, the optical cable connecting device has good air tightness.
Simultaneously, through setting up the first seal joint with all offer the seal test hole on the second seal joint, can test this connecting device's gas tightness based on external seal test equipment to prevent this connecting device's gas tightness inefficacy, lead to the material in the oil well to get into in the cavity and cause the destruction to the cable.
Through setting up the one end of interior protective sheath with top connection threaded connection can be based on outer protective sheath with interior protective sheath respectively with top connection fixed connection, when guaranteeing that this connecting device has enough intensity to protect the optical cable connecting portion, can also prevent take place the drunkenness between outer protective sheath with interior protective sheath ensures that the optical cable possesses sufficient axial tensile load.
Through setting up the cross-sectional diameter of cavity is greater than the diameter of the butt fusion fiber core of optical cable, can be based on redundant structural design, when can the optical cable of quick connection, make the optical cable connect the back and bend in the cavity to better protect the optical cable.
Drawings
FIG. 1 is a schematic cross-sectional view of a cable connection device for oil well;
fig. 2 is a schematic perspective view of an optical cable connection device for an oil well.
Description of the reference numerals
1. The first cutting sleeve is sealed; 2. a first sealing joint; 3. the second cutting sleeve is sealed; 4. an upper joint; 5. a first split ring; 6. an outer protective sleeve; 7. an inner protective sleeve; 8. an inner protective sleeve joint; 9. a second split ring; 10. locking the joint; 11. a second sealing joint; 12. the third cutting sleeve is sealed; 13. the fourth cutting sleeve is sealed; 14. a cavity; 15. sealing the test hole; 16. an outer layer steel pipe; 17. an inner layer steel pipe; 18. and welding the fiber cores.
Detailed Description
The following describes the detailed implementation of the embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or implicitly indicating the number of technical features indicated. Thus, unless otherwise indicated, features defining "first", "second" may include one or more such features either explicitly or implicitly; the meaning of "plurality" is two or more. The term "comprises," "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, a possible presence or addition of one or more other features, elements, components, and/or combinations thereof.
Furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
The invention provides an optical cable connecting device for an oil well, which is shown in fig. 1-2, and comprises a first cutting sleeve seal 1, a first sealing joint 2, an upper joint 4, an outer protective sleeve 6, a second sealing joint 11 and a fourth cutting sleeve seal 13 which are connected in sequence;
the first inner cavity is arranged in the first sealing joint 2, the second cutting ferrule seal 3 is arranged in the first inner cavity, the second inner cavity is arranged in the outer protective sleeve 6, the inner protective sleeve 7, the inner protective sleeve joint 8 and the locking joint 10 are sequentially connected in the second inner cavity, the cavity 14 is arranged in the inner protective sleeve 7, the third inner cavity is arranged in the second sealing joint 11, the third cutting ferrule seal 12 is arranged in the third inner cavity, wherein the first optical cable sequentially penetrates through the first cutting ferrule seal 1, the second cutting ferrule seal 3 and the upper joint 4 and is arranged in the cavity 14, the second optical cable sequentially penetrates through the fourth cutting ferrule seal 13, the third cutting ferrule seal 12, the locking joint 10 and the inner protective sleeve joint 8 and is arranged in the cavity 14.
According to the technical scheme, based on the optical cable connecting device for the oil well, the first optical cable sequentially passes through the first clamping sleeve seal, the second clamping sleeve seal and the upper connector to be arranged in the cavity, the second optical cable sequentially passes through the fourth clamping sleeve seal, the third clamping sleeve seal, the locking connector and the inner protective sleeve connector to be arranged in the cavity, and the optical cable connecting device is welded in the cavity under the action of fusion welding equipment, so that the connecting efficiency of the optical cable of the oil well can be effectively improved, the optical cable is prevented from being easily broken again in the oil well environment, and meanwhile, the optical cable connecting device has good air tightness.
In the optical cable connection device for oil well according to the present invention, as shown in fig. 2, preferably, the first sealing joint 2 and the second sealing joint 11 are each provided with a sealing test hole 15. After the optical cable connection is completed, the sealing test hole 15 can be used for testing the air tightness of the connecting device based on external sealing test equipment so as to prevent the air tightness of the connecting device from failing, so that substances in an oil well enter, particularly the substances enter the cavity 14 to damage the optical cable, and the applicability of the connecting device in the oil well environment is effectively improved.
In the optical cable connection device for an oil well according to the present invention, preferably, the upper and lower ends of the second ferrule seal 3 are abutted against the inner wall of the first inner cavity, the upper and lower ends of the inner protection sleeve 7, the inner protection sleeve joint 8 and the locking joint 10 are abutted against the inner wall of the second inner cavity, and the upper and lower ends of the third ferrule seal 12 are abutted against the inner wall of the third inner cavity, so that the structural stability of the connection device can be effectively improved in practical application, and thus the connection device can be used for a long time in an oil well environment.
In a further preferred embodiment, the first ferrule seal 1, the first sealing joint 2, the second ferrule seal 3, the upper joint 4, the outer protective sheath 6, the inner protective sheath 7, the inner protective sheath joint 8, the locking joint 10, the second sealing joint 11, the third ferrule seal 12 and the fourth ferrule seal 13 are all made of metal. More preferably, the metal is stainless steel. Thereby being better applicable to the environment requirements of high temperature and high pressure corrosion of the oil well.
In the optical cable connection device for an oil well according to the present invention, preferably, one end of the inner protection sleeve 7 is screwed to the upper joint 4, and the outer protection sleeve 6 and the inner protection sleeve 7 are fixedly connected to the upper joint 4, so that the optical cable connection device is ensured to have sufficient strength to protect the optical cable connection portion, and play between the outer protection sleeve 6 and the inner protection sleeve 7 is prevented, thereby ensuring that the optical cable has sufficient axial tensile load.
In the optical cable connection device for oil well according to the present invention, a first split ring 5 is preferably provided between the inner protective sheath 7 and the upper joint 4.
In a further preferred embodiment, a second split ring 9 is arranged between the inner protective sheath joint 8 and the locking joint 10.
In the invention, by arranging the first split ring 5 and the second split ring 9, the stability of the connecting device in the process of connecting the optical cables can be further effectively improved in practical application, and the connecting device is particularly suitable for connecting the optical cables which are sequentially provided with the outer layer steel tube 16, the inner layer steel tube 17 and the welding fiber core 18 from outside to inside.
In the optical cable connection device for oil well according to the present invention, the cross-sectional diameter of the cavity 14 is preferably larger than the diameter of the fusion-spliced core 18 of the optical cable. Through setting up the cross-sectional diameter of cavity is greater than the diameter of the butt fusion fiber core of optical cable, can be based on redundant structural design, when can the optical cable of quick connection, make the optical cable connect the back and bend in the cavity to better protect the optical cable.
The present invention will be described in detail by way of examples, but the scope of the present invention is not limited thereto.
Example 1
The optical cable connecting device for the oil well is implemented by adopting the optical cable connecting device for the oil well, and specifically comprises a first cutting sleeve seal 1, a first sealing joint 2, an upper joint 4, an outer protective sleeve 6, a second sealing joint 11 and a fourth cutting sleeve seal 13 which are connected in sequence;
a first inner cavity is formed in the first sealing joint 2, a second cutting sleeve seal 3 is arranged in the first inner cavity, a second inner cavity is formed in the outer protective sleeve 6, an inner protective sleeve 7, an inner protective sleeve joint 8 and a locking joint 10 are sequentially connected in the second inner cavity, a cavity 14 is formed in the inner protective sleeve 7, a third inner cavity is formed in the second sealing joint 11, and a third cutting sleeve seal 12 is formed in the third inner cavity, wherein a first optical cable sequentially penetrates through the first cutting sleeve seal 1, the second cutting sleeve seal 3 and the upper joint 4 and is arranged in the cavity 14, and a second optical cable sequentially penetrates through the fourth cutting sleeve seal 13, the third cutting sleeve seal 12, the locking joint 10 and the inner protective sleeve joint 8 and is arranged in the cavity 14;
one end of the inner protective sleeve 7 is in threaded connection with the upper joint 4; a first split ring 5 is arranged between the inner protective sleeve 7 and the upper joint 4; a second split ring 9 is arranged between the inner protective sleeve joint 8 and the locking joint 10; the upper end and the lower end of the second ferrule seal 3 are abutted with the inner wall of the first inner cavity, the upper end and the lower end of the inner protective sleeve 7, the inner protective sleeve joint 8 and the locking joint 10 are abutted with the inner wall of the second inner cavity, and the upper end and the lower end of the third ferrule seal 12 are abutted with the inner wall of the third inner cavity; the first ferrule seal 1, the first sealing joint 2, the second ferrule seal 3, the upper joint 4, the outer protective sleeve 6, the inner protective sleeve 7, the inner protective sleeve joint 8, the locking joint 10, the second sealing joint 11, the third ferrule seal 12 and the fourth ferrule seal 13 are all made of metal, and the metal is stainless steel; the optical cable sequentially comprises an outer layer steel pipe 16, an inner layer steel pipe 17 and a fusion fiber core 18 from outside to inside.
During practical application, the end parts of the two sections of cut optical cables are processed smoothly, the outer layer steel tube 16 and the inner layer steel tube 17 of the optical cables are cut according to the design size of the optical cable connecting device for the oil well, then one optical cable sequentially passes through the first clamping sleeve seal 1, the second clamping sleeve seal 3, the upper joint 4 and the first split ring 5 to be arranged in the cavity 14, the other optical cable to be connected sequentially passes through the fourth clamping sleeve seal 13, the third clamping sleeve seal 12, the locking joint 10, the second split ring 9 and the inner protective sleeve joint 8 to be arranged in the cavity 14, and then the two optical cables to be connected are welded in the cavity 14 based on fusion welding equipment.
Through detection, the optical cable connecting device for the oil well can effectively improve the connecting efficiency of the optical cable of the oil well, ensure that the optical cable cannot be broken again easily in the oil well environment, and have good air tightness.
Example 2
In contrast to the implementation of example 1, the cross-sectional diameter of the cavity 14 is greater than the diameter of the fused core 18 of the cable.
According to detection, compared with the scheme in the embodiment 1, the optical cable connecting device for the oil well, disclosed by the invention, has the advantages that the cross section diameter of the cavity is larger than the diameter of the welding fiber core of the optical cable, and the optical cable can be bent in the cavity after being connected based on a redundant structural design while being connected more quickly, so that the optical cable is better protected.
Example 3
In contrast to the embodiment 2, the first sealing joint 2 and the second sealing joint 11 are each provided with a sealing test hole 15.
In practical application, after the optical cable connection is completed, the air tightness of the connection device is tested by adopting external sealing test equipment, and the sealing test hole 15 is blocked after the test is qualified.
According to detection, compared with the scheme in the embodiment 2, the optical cable connecting device for the oil well has the advantages that the sealing test holes are formed in the first sealing joint and the second sealing joint, so that the air tightness of the connecting device can be tested based on external sealing test equipment, the air tightness of the connecting device is prevented from being invalid, and substances in the oil well are prevented from entering the cavity to damage the optical cable.
According to the optical cable connecting device for the oil well, the first optical cable sequentially passes through the first clamping sleeve seal, the second clamping sleeve seal and the upper connector and is arranged in the cavity, the second optical cable sequentially passes through the fourth clamping sleeve seal, the third clamping sleeve seal, the locking connector and the inner protective sleeve connector and is arranged in the cavity, and welding is carried out in the cavity under the action of fusion welding equipment, so that the connecting efficiency of the optical cable of the oil well can be effectively improved in the practical application process, the optical cable is prevented from being broken easily again in the oil well environment, and meanwhile, the optical cable connecting device has good air tightness.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a plurality of simple variants can be made to the technical proposal of the invention, and in order to avoid unnecessary repetition, the invention does not need to be additionally described for various possible combinations. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.
Claims (10)
1. The optical cable connecting device for the oil well is characterized by comprising a first cutting sleeve seal (1), a first sealing joint (2), an upper joint (4), an outer protective sleeve (6), a second sealing joint (11) and a fourth cutting sleeve seal (13) which are connected in sequence;
the novel optical fiber cable connector is characterized in that a first inner cavity is formed in the first sealing connector (2), a second cutting sleeve seal (3) is arranged in the first inner cavity, a second inner cavity is formed in the outer protective sleeve (6), an inner protective sleeve (7), an inner protective sleeve connector (8) and a locking connector (10) are sequentially connected in the second inner cavity, a cavity (14) is formed in the inner protective sleeve (7), a third inner cavity is formed in the second sealing connector (11), a third cutting sleeve seal (12) is arranged in the third inner cavity, wherein a first optical cable sequentially penetrates through the first cutting sleeve seal (1), the second cutting sleeve seal (3) and the upper connector (4) and is arranged in the cavity (14), and a second optical cable sequentially penetrates through the fourth cutting sleeve seal (13), the third cutting sleeve seal (12), the locking connector (10) and the inner protective sleeve connector (8) are arranged in the cavity (14).
2. The optical cable connection device for oil well according to claim 1, wherein the first sealing joint (2) and the second sealing joint (11) are provided with sealing test holes (15).
3. The optical cable connection device for oil well according to claim 1, wherein the upper and lower ends of the second ferrule seal (3) are abutted against the inner wall of the first inner cavity, the upper and lower ends of the inner protection sleeve (7), the inner protection sleeve joint (8) and the locking joint (10) are abutted against the inner wall of the second inner cavity, and the upper and lower ends of the third ferrule seal (12) are abutted against the inner wall of the third inner cavity.
4. A cable connection for oil wells according to any one of claims 1-3, wherein one end of the inner protective sheath (7) is screwed with the upper joint (4).
5. An optical cable connection device for oil well according to claim 4, characterized in that a first split ring (5) is arranged between the inner protective sheath (7) and the upper joint (4).
6. A cable connection device for oil well according to claim 1 or 5, characterized in that a second split ring (9) is arranged between the inner protective sheath joint (8) and the locking joint (10).
7. The cable connection device for oil wells according to claim 1, wherein the cross-sectional diameter of the cavity (14) is larger than the diameter of the fusion core (18) of the optical cable.
8. The cable connection device for oil wells according to claim 1, wherein the first ferrule seal (1), the first sealing joint (2), the second ferrule seal (3), the upper joint (4), the outer protective sheath (6), the inner protective sheath (7), the inner protective sheath joint (8), the locking joint (10), the second sealing joint (11), the third ferrule seal (12) and the fourth ferrule seal (13) are all made of metal.
9. The cable connection for oil well of claim 8, wherein the metal is stainless steel.
10. The optical cable connection device for oil well according to claim 1, wherein the optical cable is an outer layer steel tube (16), an inner layer steel tube (17) and a fusion fiber core (18) in order from outside to inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311735085.3A CN117741879A (en) | 2023-12-15 | 2023-12-15 | Optical cable connecting device for oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311735085.3A CN117741879A (en) | 2023-12-15 | 2023-12-15 | Optical cable connecting device for oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117741879A true CN117741879A (en) | 2024-03-22 |
Family
ID=90250219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311735085.3A Pending CN117741879A (en) | 2023-12-15 | 2023-12-15 | Optical cable connecting device for oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117741879A (en) |
-
2023
- 2023-12-15 CN CN202311735085.3A patent/CN117741879A/en active Pending
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