CN211826643U - Rope cap sealing device for optical cable logging - Google Patents
Rope cap sealing device for optical cable logging Download PDFInfo
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- CN211826643U CN211826643U CN202020759526.9U CN202020759526U CN211826643U CN 211826643 U CN211826643 U CN 211826643U CN 202020759526 U CN202020759526 U CN 202020759526U CN 211826643 U CN211826643 U CN 211826643U
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- optical cable
- sealed tube
- tube
- rope socket
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Abstract
The utility model relates to a rope socket sealing device for optical cable logging, wherein be provided with the splint structure that is used for pressing from both sides tight optical cable in the rope socket, the last lower extreme of splint structure respectively with the rope socket, first sealed tube butt, the one end that first sealed tube closes on the second sealed tube is embedded to have a seal structure, the second sealed tube has held the return circuit box, place in the return circuit box after the optical cable passes the rope socket in proper order, splint structure, first sealed tube and seal structure, between first sealed tube and the second sealed tube, equal sealing connection between second sealed tube and the tool string connects. The utility model discloses a rope socket sealing device for optical cable logging, through set up the splint structure in the rope socket in order to press from both sides tight optical cable, prevent that the optical cable from removing to utilize first sealed tube, second sealed tube, return circuit box sealing connection optical cable, utilize tool string to connect shutoff second sealed tube, thereby form the multiple sealing to the optical cable, both improved the sealing performance of optical cable, also guaranteed being connected of optical cable and tool string subassembly.
Description
Technical Field
The utility model relates to an optical cable sealing technique field, in particular to rope socket sealing device for optical cable logging.
Background
In recent years, the distributed optical fiber sensing system has attracted attention of people due to the characteristics of high sensitivity, corrosion resistance, high temperature resistance, wide measurement range and the like, is gradually developed and applied to measurement in the field of oil and gas wells, and can be used for measurement of underground pressure, temperature, noise, vibration, sound waves and seismic waves. The system is based on an optical cable structure underground, the optical cable can be lowered into the well along with tool strings such as a weighting rod in the well logging process, the tool strings and the optical cable need to be connected through a rope cap, the optical cable needs to be sealed, and the optical fiber at the tail end of the optical cable needs to be welded into a loop. The existing rope cap is a common steel wire rope cap, and the sealing performance is poor. Therefore, the prior art has yet to be developed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the shortcoming that exists among the prior art, provide a rope cap sealing device for optical cable logging that the leakproofness is good.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a rope socket sealing device for optical cable well logging, connect including the rope socket, first sealed tube, second sealed tube and the tool string that connect gradually, be provided with the holding chamber in the rope socket, the holding intracavity is provided with the splint structure that is used for pressing from both sides tight optical cable, the last lower extreme of splint structure respectively with rope socket, first sealed tube butt, first sealed tube closes on the one end of second sealed tube and is embedded to have a seal structure, the second sealed tube has held the return circuit box, and the optical cable passes in proper order place behind rope socket, splint structure, first sealed tube and the seal structure in the return circuit box, between first sealed tube and the second sealed tube, equal sealing connection between second sealed tube and the tool string connects.
Further, the diameter of the splint structure is slightly smaller than that of the accommodating cavity.
Furthermore, the splint structure includes two half-moon shape splint and a plurality of mounting that relative setting, two half-moon shape splint pass through the mounting symmetry is connected.
Further, the rope cap is connected with the first sealing pipe through threads, the first sealing pipe is connected with the second sealing pipe through threads, and the second sealing pipe is connected with the tool string connector through threads.
Further, seal structure including embedded in proper order first packing, second packing and the sealing bolt in the first sealed tube bottom opening, sealing bolt with first sealed tube bottom opening threaded connection.
Further, the first packing adopts rubber material, the second packing adopts the copper product.
Furthermore, the outer side wall of the rope cap is annularly provided with a clamping groove.
Furthermore, a plurality of first sealing rings are annularly arranged at the joint of the outer side wall of the first sealing pipe and the second sealing pipe.
Furthermore, a plurality of second sealing rings are annularly arranged at the joint of the outer side wall of the tool string connector and the second sealing pipe.
The utility model discloses beneficial effect that technical scheme has:
the utility model discloses a rope socket sealing device for optical cable logging, through set up the splint structure in the rope socket in order to press from both sides tight optical cable, prevent that the optical cable from removing to utilize first sealed tube, second sealed tube, return circuit box sealing connection optical cable, utilize tool string to connect shutoff second sealed tube, thereby form the multiple sealing to the optical cable, both improved the sealing performance of optical cable, also guaranteed being connected of optical cable and tool string subassembly.
Drawings
FIG. 1 is a schematic cross-sectional view of a cable cap seal for optical fiber cable logging according to the present invention;
fig. 2 is a schematic sectional view of the rope cap of the present invention;
fig. 3 is a schematic cross-sectional view of a first sealing tube of the present invention;
FIG. 4 is a schematic cross-sectional view of the tool string connector of the present invention;
description of reference numerals:
100-rope cap sealing device for optical cable logging, 10-rope cap, 11-accommodating cavity, 12-clamping plate structure, 13-clamping groove, 20-first sealing pipe, 21-sealing structure, 211-first packing, 212-second packing, 213-sealing bolt, 22-loop box, 23-first sealing ring, 30-second sealing pipe, 40-tool string connector, 41-second sealing ring and 200-optical cable.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the specific embodiments described herein are only used for explaining the present invention, and are not used for limiting the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "connected" may be a fixed connection or a removable connection, or may be integral therewith; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
As an embodiment, please refer to fig. 1 to 4, the present invention provides a rope cap sealing device 100 for optical cable logging, including a rope cap 10, a first sealing tube 20, a second sealing tube 30 and a tool string connector 40 connected in sequence, wherein a receiving cavity 11 is provided in the rope cap 10, a clamping plate structure 12 for clamping an optical cable 200 is provided in the receiving cavity 11, upper and lower ends of the clamping plate structure 12 are respectively abutted against the rope cap 10 and the first sealing tube 20 to prevent the optical cable 200 from moving in the rope cap 10, a sealing structure 21 is embedded in an end of the first sealing tube 20 close to the second sealing tube 30, a loop box 22 is provided in the second sealing tube 30, the optical cable 200 sequentially passes through the rope cap 10, the clamping plate structure 12, the first sealing tube 20 and the sealing structure 21 and then is placed in the loop box 22, a gap between the first sealing tube 20 and the second sealing tube 30, and a gap between the first sealing tube 20 and the second sealing tube 30 is filled with a sealing material, The second sealing tube 30 is hermetically connected to the tool string connector 40, which not only ensures the sealing performance of the optical cable 200, but also ensures the connection between the optical cable 200 and the tool string assembly.
In this embodiment, the utility model discloses a rope socket sealing device 100 for optical cable logging has multiple sealed, and its sealing performance is good, long service life, simple structure moreover, easy to assemble and dismantlement.
Because the optical fiber loop is welded at the tail end of the optical cable 200, the optical fiber loop can be stably fixed when the optical cable 200 is placed in the loop box 22, the condition that the welded optical fiber loop is violently whipped in the process that the optical cable 200 goes into the well to cause desoldering and the like is prevented, and the problem of the optical fiber welding loop at the tail end of the optical cable 200 is solved.
In this embodiment, the tool string assembly comprises: the tool string component is selected according to factors such as well depth, pressure and the like during logging each time.
Preferably, the diameter of the clamping plate structure 12 is slightly smaller than that of the accommodating cavity 11, so that the optical cable 200 is prevented from greatly deviating, and the stability is improved.
As an embodiment, the clamping plate structure 12 includes two half-moon-shaped clamping plates and a plurality of fixing members, the two half-moon-shaped clamping plates are symmetrically connected through the fixing members, and the two half-moon-shaped clamping plates have a hollow circular groove after being fixed, so as to adapt to the shape of the optical cable 200, thereby avoiding the reduction of the tensile strength caused by the damage of the optical cable 200.
In this embodiment, the rope cap 10 and the first sealing tube 20 are connected by a screw thread, the first sealing tube 20 and the second sealing tube 30 are connected by a screw thread, and the second sealing tube 30 and the tool string connector 40 are connected by a screw thread, so that the installation and the disassembly are convenient.
Referring to fig. 3, the sealing structure 21 includes a first packing 211, a second packing 212 and a sealing bolt 213 embedded in the opening at the bottom of the first sealing pipe 20 in sequence, and the sealing bolt 213 is in threaded connection with the opening at the bottom of the first sealing pipe 20.
When the optical cable 200 is installed, the optical cable 200 is passed through the rope cap 10 and the first sealing tube 20, the first packing 211 is passed through the optical cable 200, then the optical cable 200 is pulled back to ensure that the first packing 211 completely enters the first sealing tube 20, the second packing 212 is passed through the optical cable 200, the second packing 212 and the first packing 211 are laminated by the sealing bolt 213 and fixedly connected with the bottom opening of the first sealing tube 20, and finally the tail end of the optical cable 200 is welded into a loop and placed in the loop box 22, so that the optical cable 200 is sealed repeatedly, the optical cable 200 is prevented from moving, and the stability is improved.
Further, first packing 211 adopts rubber material, second packing 212 adopts the copper product, adopts rubber material and copper product's combination, ensures first packing 211, second packing 212 can extrusion deformation in order to seal, and the second packing 212 that adopts the copper product has high temperature resistance's advantage moreover.
Referring to fig. 2, a clamping groove 13 is annularly formed on an outer side wall of the rope cap 10, and is used for fishing the tool string assembly when the optical cable 200 is broken in a logging process, so that a rope and the like can be conveniently sleeved on the clamping groove 13 to fish the tool string assembly, and the operation is convenient.
Preferably, a plurality of first sealing rings 23 are annularly arranged at the joint of the outer side wall of the first sealing pipe 20 and the second sealing pipe 30, so that the sealing performance is further improved.
Preferably, a plurality of second sealing rings 41 are annularly arranged at the joint of the outer side wall of the tool string connector 40 and the second sealing pipe 30, so that the sealing performance is further improved.
The utility model discloses a rope socket sealing device 100 for optical cable logging, through set up splint structure 12 in rope socket 10 in order to press from both sides tight optical cable 200, prevent that optical cable 200 from removing to utilize first sealed tube 20, second sealed tube 30, return circuit box 22 sealing connection optical cable 200, utilize tool string to connect 40 shutoff second sealed tube 30, thereby form the multiple sealing to optical cable 200, both improved optical cable 200's sealing performance, also guarantee the connection of optical cable 200 and tool string subassembly.
The above embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes or variations led out by the technical scheme of the utility model are still in the protection scope of the utility model.
Claims (9)
1. The utility model provides a rope socket sealing device for optical cable well logging, its characterized in that, including rope socket, first sealed tube, second sealed tube and the tool string joint that connects gradually, be provided with the holding chamber in the rope socket, the holding intracavity is provided with the splint structure that is used for pressing from both sides tight optical cable, the last lower extreme of splint structure respectively with rope socket, first sealed tube butt, the one end that first sealed tube closes on the second sealed tube is embedded to have a seal structure, the holding has a return circuit box in the second sealed tube, and the optical cable passes in proper order place behind rope socket, splint structure, first sealed tube and the seal structure in the return circuit box, between first sealed tube and the second sealed tube, equal sealing connection between second sealed tube and the tool string joint.
2. The apparatus of claim 1, wherein the diameter of the cleat structure is slightly smaller than the diameter of the receiving cavity.
3. The apparatus of claim 1, wherein the clamping structure comprises two half-moon shaped clamping plates and a plurality of fixing members, the two half-moon shaped clamping plates are symmetrically connected by the fixing members.
4. The apparatus of claim 1, wherein the string cap and the first sealing tube are threadably connected, the first sealing tube and the second sealing tube are threadably connected, and the second sealing tube and the tool string connector are threadably connected.
5. The apparatus of claim 1, wherein the sealing structure comprises a first packing, a second packing and a sealing bolt embedded in the bottom opening of the first sealing tube, and the sealing bolt is in threaded connection with the bottom opening of the first sealing tube.
6. The apparatus of claim 5, wherein the first packing is made of rubber and the second packing is made of copper.
7. The apparatus of claim 1, wherein the outer sidewall of the string cap is provided with a groove.
8. The apparatus of claim 1, wherein a plurality of first sealing rings are disposed around the joint of the outer sidewall of the first sealing tube and the second sealing tube.
9. The apparatus of claim 1, wherein a plurality of second sealing rings are disposed around the connection between the outer sidewall of the tool string connector and the second sealing tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020759526.9U CN211826643U (en) | 2020-05-09 | 2020-05-09 | Rope cap sealing device for optical cable logging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020759526.9U CN211826643U (en) | 2020-05-09 | 2020-05-09 | Rope cap sealing device for optical cable logging |
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| Publication Number | Publication Date |
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| CN211826643U true CN211826643U (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020759526.9U Active CN211826643U (en) | 2020-05-09 | 2020-05-09 | Rope cap sealing device for optical cable logging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2020
- 2020-05-09 CN CN202020759526.9U patent/CN211826643U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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