CN222028452U - A downhole continuous composite cable optical fiber connection joint - Google Patents
A downhole continuous composite cable optical fiber connection joint Download PDFInfo
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- CN222028452U CN222028452U CN202420257487.0U CN202420257487U CN222028452U CN 222028452 U CN222028452 U CN 222028452U CN 202420257487 U CN202420257487 U CN 202420257487U CN 222028452 U CN222028452 U CN 222028452U
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Abstract
The utility model provides an underground continuous composite pipe cable optical fiber connection joint which comprises a continuous composite pipe cable, an outer pipe joint body, an inner pipe joint body, a plug connector and a tool joint body, wherein a second liquid channel and a second cable channel are arranged in the plug connector, a wire connector is arranged in the second cable channel, the left end of the second liquid channel is communicated with the liquid channel of the inner pipe of the continuous composite pipe cable, and the right end of the second liquid channel is communicated with the liquid channel of an underground tool; the left end of the connector is connected with the optical fiber of the continuous composite pipe cable, and the right end of the connector is connected with the optical fiber of the downhole tool. According to the utility model, the oil gas channels and the optical fibers at the two ends of the underground continuous composite pipe cable are communicated through the plug connector arranged in the connector, so that the problem that the optical fiber transmission in the underground continuous composite pipe cable cannot be conducted through the slip ring is solved, the integral structure is convenient to assemble and disassemble, the connection efficiency is high, and the universal connector can be used as a universal connector for optical fiber connection in the underground continuous composite pipe cable.
Description
Technical Field
The utility model relates to an underground oil-gas pipe cable, in particular to an underground continuous composite pipe cable optical fiber connection joint.
Background
The coiled tubing is used for transportation in the construction process of oil extraction and gas extraction, cables are often required to be laid for conveniently controlling underground equipment, and the cable is arranged inside the coiled tubing so as to greatly reduce the damage to the cable.
The cable is arranged inside the underground continuous pipe and can be called as an underground continuous composite pipe cable, and at present, the following problems exist in the design of the underground continuous composite pipe cable:
The connection of underground continuous pipes usually adopts threaded connection, and when the threaded connection is rotated, the internal cables are twisted along with the threaded connection, so that the cables are scattered, and faults such as disconnection and the like are easy to occur at the cable connection positions.
2. When the cable is placed in the underground continuous pipe, oil gas flows in the continuous pipe, for example, the oil gas is not isolated from the cable, and the safety of the cable is difficult to fully ensure by simply relying on the self protection of the cable; the oil gas channel is completely isolated from the cable, only solid isolation can be adopted, and because the underground continuous pipe adopts threaded connection, when the threaded rotary connection is adopted, relative rotary displacement is generated between the solid isolation at the two ends of the joint, and effective connection of the cable is difficult to ensure.
To solve the above problems, i have designed a general joint structure for a composite underground pipe cable in the early stage and filed patents such as CN207868425U, and recently filed related patents such as CN20232023229533704 and CN2023229533738, but these patents are mainly directed to general cables.
With the updating of the downhole testing tools, the downhole testing tools adopting optical fibers for transmitting information are increasingly widely used. The optical fiber transmission structure adopts a slip ring structure as in the last two patents, and obviously, the requirement of optical fiber transmission is difficult to meet.
Disclosure of utility model
Aiming at the problems of the background technology, the utility model aims to provide an optical fiber connection joint of an underground continuous composite pipe cable so as to solve the requirement that optical fiber transmission in the underground continuous composite pipe cable cannot be effectively realized.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The underground continuous composite pipe cable optical fiber connection joint comprises a continuous composite pipe cable, an outer pipe joint body, an inner pipe joint body, a plug connector and a tool joint body, wherein the continuous composite pipe cable comprises an inner pipe and an outer pipe sleeved outside the inner pipe, a pipe cavity of the inner pipe is a liquid channel, a cable channel is arranged between the inner pipe and the outer pipe, and optical fibers are arranged in the cable channel; the left end of the outer tube connector body is in threaded connection with the outer tube of the continuous composite tube cable, the right end of the outer tube connector body is in threaded connection with the tool connector body, the inner tube of the continuous composite tube cable is in threaded connection with the left end of the inner tube connector body, the right end of the inner tube connector body is inserted into the plug connector, and the plug connector is positioned and inserted into the tool connector body; a first rotary sealing ring is arranged between the inner pipe joint body and the plug connector, and a second rotary sealing ring is arranged between the plug connector and the tool joint body; the connector is internally provided with a second liquid channel and a second cable channel, a connector is arranged in the second cable channel, the left end of the second liquid channel is communicated with the liquid channel of the inner pipe of the continuous composite pipe cable, and the right end of the second liquid channel is communicated with the liquid channel of the downhole tool; the left end of the connector is connected with the optical fiber of the continuous composite pipe cable, and the right end of the connector is connected with the optical fiber of the downhole tool.
Support rods are uniformly distributed between the inner tube and the outer tube of the continuous composite tube cable, the inner tube and the outer tube are fixedly connected with the support rods respectively, and the length direction of the support rods is parallel to the axis of the inner tube.
The whole plug connector is of an annular structure, a first annular positioning boss is arranged at the left end of the outer part of the plug connector, the second rotary sealing ring is arranged on the outer cylindrical surface of the first annular positioning boss, and the tool joint body is connected with the outer pipe joint body through threads to press the first annular positioning boss so as to position the plug connector; the inner hole of the plug connector is a second liquid channel, and the middle part of the inner hole of the plug connector is provided with a coaxial second annular positioning boss; the inner pipe connector body is inserted into the inner hole of the plug connector and is abutted against the left end face of the second annular positioning boss; the first rotary sealing ring is arranged between the inner pipe joint body and the inner hole wall of the plug connector.
The left end face of the plug connector is provided with a first positioning pin, and the plug connector is positioned with the outer pipe connector body through the first positioning pin; the right end face of the plug connector is provided with a second locating pin for locating the external structure.
The tool joint body is of an annular structure as a whole, and an external thread for connecting a downhole tool is arranged on the outer wall of the right end of the tool joint body; the inner hole of the tool joint body is a four-stage stepped hole with the inner diameter decreasing in sequence from left to right, wherein the first stepped hole is sleeved outside the outer pipe joint body, and a third rotary sealing ring is arranged between the first stepped hole and the outer pipe joint body; the second step hole is also sleeved outside the outer pipe joint body and is in threaded connection with the outer pipe joint body; the third step hole is sleeved outside the first annular positioning boss of the plug connector, and a fourth rotary sealing ring is arranged between the third step hole and the first annular positioning boss of the plug connector; the fourth step hole is sleeved at the right end of the plug connector and is in clearance fit with the right end of the plug connector.
The outer pipe joint body is of a two-stage step shaft structure with the outer diameter gradually increasing from left to right, wherein a first through hole is formed in the first step shaft, a second through hole is formed in the second step shaft, the inner diameter of the second through hole is larger than that of the first through hole, the first through hole is coaxial and communicated with the second through hole, and the left end of the first through hole is sleeved outside the outer pipe and is in threaded connection with the outer pipe; the right end of the second step shaft is provided with external threads.
The utility model has the following beneficial effects: according to the utility model, the oil gas channels and the optical fibers at the two ends of the underground continuous composite pipe cable are communicated through the plug connector arranged in the connector, so that the problem that the optical fiber transmission in the underground continuous composite pipe cable cannot be conducted through the slip ring is solved, the integral structure is convenient to assemble and disassemble, the connection efficiency is high, and the universal connector can be used as a universal connector for optical fiber connection in the underground continuous composite pipe cable.
Drawings
Fig. 1 is a front view of the overall structure of the present utility model.
Fig. 2 is a dispersion schematic of the present utility model.
Fig. 3 is a perspective view of the present utility model.
In the figure, 1, a continuous composite pipe cable, 2, an outer pipe connector body, 3, an inner pipe connector body, 4, a plug connector, 5, a tool connector body, 6 and a wire connector; 101. an inner tube 102, an outer tube 103 and a support rod; 401. first annular positioning boss, 402, second annular positioning boss, 403, first locating pin, 404, second locating pin.
Detailed Description
The technical scheme of the utility model is further described in detail through the drawings and the embodiments.
As shown in fig. 1-3, the utility model provides an underground continuous composite pipe cable optical fiber connection joint, which comprises a continuous composite pipe cable 1, an outer pipe joint body 2, an inner pipe joint body 3, a plug connector 4 and a tool joint body 5, wherein the continuous composite pipe cable 1 comprises an inner pipe 101 and an outer pipe 102 sleeved outside the inner pipe 101, the pipe cavity of the inner pipe 101 is a liquid channel, a cable channel is arranged between the inner pipe 101 and the outer pipe 102, and optical fibers are arranged in the cable channel; the left end of the outer tube connector body 2 is in threaded connection with the outer tube 102 of the continuous composite tube cable 1, the right end of the outer tube connector body is in threaded connection with the tool connector body 5, the inner tube 101 of the continuous composite tube cable 1 is in threaded connection with the left end of the inner tube connector body 3, the right end of the inner tube connector body 3 is inserted into the plug connector 4, and the plug connector 4 is positioned and inserted into the tool connector body 5; a first rotary sealing ring is arranged between the inner pipe joint body 3 and the plug connector 4, and a second rotary sealing ring is arranged between the plug connector 4 and the tool joint body 5; the inside of the plug connector 4 is provided with a second liquid channel and a second cable channel, a connector 6 is arranged in the second cable channel, the left end of the second liquid channel is communicated with the liquid channel of the inner pipe 101 of the continuous composite pipe cable 1, and the right end of the second liquid channel is communicated with the liquid channel of the downhole tool; the left end of the connector 6 is connected with the optical fiber of the continuous composite cable 1, and the right end is connected with the optical fiber of the downhole tool.
The utility model can be applied to the connection of underground test tool optical fibers for transmitting information by using optical fibers in an oil-gas underground continuous composite pipe cable, when the connection is carried out, firstly, the outer pipe connector body 2 is connected with the outer pipe 102, the inner pipe connector body 3 is connected with the inner pipe 101, then the optical fibers are connected with the connector 6 on the plug connector 4, then the plug connector 4 is butted with the outer pipe connector body 2 by using the first pin shaft 403, then the tool connector body 5 is sleeved, the tool connector body 5 is connected with the outer pipe connector body 2, and after the plug connector 4 is fastened, the connection of the connector and the continuous composite pipe cable is realized, and at the moment, the oil-gas connection and the optical fiber connection of an underground tool can be realized through the optical fiber interface and the second liquid channel provided by the plug connector 4. Of course, in order to ensure that oil and gas does not leak between the inner tube 101 and the plug 4, a seal of the relevant parts is also required during the connection, and the sealing structure will be described further below.
The support rods 103 are uniformly distributed between the inner tube 101 and the outer tube 102 of the continuous composite cable 1, the inner tube 101 and the outer tube 102 are fixedly connected with the support rods 103 respectively, and the length direction of the support rods 103 is parallel to the axis of the inner tube 101. This is a structural form of the continuous composite umbilical 1, and in this embodiment, the optical fibers in the continuous composite umbilical 1 do not rotate with the threaded connection of the pipes when the continuous composite umbilical 1 is connected.
The whole plug connector 4 is of an annular structure, a first annular positioning boss 401 is arranged at the left end of the outer part of the plug connector 4, the second rotary sealing ring is arranged on the outer cylindrical surface of the first annular positioning boss 401, and the tool joint body 5 is connected with the outer pipe joint body 2 through threads to press the first annular positioning boss 401, so that the plug connector 4 is positioned; the inner hole of the plug connector 4 is a second liquid channel, and the middle part of the inner hole of the plug connector 4 is provided with a coaxial second annular positioning boss 402; the inner pipe joint body 3 is inserted into the inner hole of the plug connector 4 and is abutted against the left end face of the second annular positioning boss 402; the first rotary sealing ring is arranged between the inner pipe joint body 3 and the inner hole wall of the plug connector 4. The first annular positioning boss 401 and the second annular positioning boss 402 mainly use the plug 4 to position the inner pipe joint body 3 and the tool joint body 5 when they are connected, and provide a sealing position, as the name implies.
The left end face of the plug connector 4 is provided with a first locating pin 403, and the plug connector is located with the outer pipe joint body 2 through the first locating pin 403; the right end face of the plug 4 is provided with a second positioning pin 404 for positioning the external structure. The first positioning pin 403 and the second positioning pin 404 are used for ensuring that the plug connector 4 does not rotate when being connected.
The tool joint body 5 is of an annular structure as a whole, and the outer wall of the right end of the tool joint body is provided with external threads for connecting with a downhole tool; the inner hole of the tool joint body 5 is a four-stage stepped hole with the inner diameter decreasing in sequence from left to right, wherein the first stepped hole is sleeved outside the outer pipe joint body 2, and a third rotary sealing ring is arranged between the first stepped hole and the outer pipe joint body 2; the second step hole is also sleeved outside the outer pipe joint body 2 and is in threaded connection with the outer pipe joint body 2; the third step hole is sleeved outside the first annular positioning boss 401 of the plug connector 4, and a fourth rotary sealing ring is arranged between the third step hole and the first annular positioning boss 401 of the plug connector 4; the fourth step hole is sleeved at the right end of the plug connector 4 and is in clearance fit with the right end of the plug connector 4.
The outer pipe joint body 2 is of a two-stage stepped shaft structure with the outer diameter gradually increasing from left to right, wherein a first through hole is formed in the first stepped shaft, a second through hole is formed in the second stepped shaft, the inner diameter of the second through hole is larger than that of the first through hole, the first through hole is coaxial and communicated with the second through hole, and the left end of the first through hole is sleeved outside the outer pipe 102 and is in threaded connection with the outer pipe 102; the right end of the second step shaft is provided with external threads.
The utility model is not described in detail in the prior art.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420257487.0U CN222028452U (en) | 2024-02-02 | 2024-02-02 | A downhole continuous composite cable optical fiber connection joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420257487.0U CN222028452U (en) | 2024-02-02 | 2024-02-02 | A downhole continuous composite cable optical fiber connection joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222028452U true CN222028452U (en) | 2024-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420257487.0U Active CN222028452U (en) | 2024-02-02 | 2024-02-02 | A downhole continuous composite cable optical fiber connection joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222028452U (en) |
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2024
- 2024-02-02 CN CN202420257487.0U patent/CN222028452U/en active Active
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