CN210460526U - High-pressure multistage sealing device - Google Patents
High-pressure multistage sealing device Download PDFInfo
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- CN210460526U CN210460526U CN201920891936.6U CN201920891936U CN210460526U CN 210460526 U CN210460526 U CN 210460526U CN 201920891936 U CN201920891936 U CN 201920891936U CN 210460526 U CN210460526 U CN 210460526U
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Abstract
The utility model discloses a multistage sealing device of high pressure, include: a sealing short section (1); the tool interface (2) is connected with the sealing short section (1); the sealing short section (1) comprises a sealing rubber sleeve (17), and at least one part of the sealing rubber sleeve (17) is sleeved on the connecting cable. The utility model discloses a steel pipe cable and the sealing connection of instrument in the pit are realized to multistage sealed mode, have improved sealed reliability, have prolonged the life of instrument in the pit.
Description
Technical Field
The utility model belongs to the technical field of sealing joint, concretely relates to multistage sealing device of high pressure.
Background
With the development of oil exploration technology, in the layered water injection and the layered production allocation of oil fields, the intelligent layered water injection with cables and the intelligent layered production allocation with cables are mature day by day. The steel pipe cable is a common cable in intelligent layered water injection with cables and intelligent layered production allocation with cables. Typically, the steel pipe cable is connected directly to the downhole tool (e.g., wireline intelligent water distributors, wireline intelligent production distributors).
Due to the complex underground environment, higher requirements are put on the reliability of the sealing connection between the steel pipe cable and the underground tool. Most steel pipe cables are currently connected to downhole tools through sealed joints.
However, existing sealing joints suffer from short seal life and once the seal fails, the downhole tool cannot function properly.
Disclosure of Invention
In order to solve the above problems existing in the prior art, the utility model provides a high-pressure multistage sealing device. The to-be-solved technical problem of the utility model is realized through following technical scheme:
a high pressure multi-stage seal comprising:
sealing the short section;
the tool interface is connected with the sealing short section;
the sealing short section comprises a sealing rubber sleeve, and at least one part of the sealing rubber sleeve is sleeved on the connecting cable.
In an embodiment of the present invention, the sealing nipple further includes a fastening nut, a force transmission sleeve and a sealing sleeve; the fastening nut, the force transmission clamping sleeve and the sealing clamping sleeve are sequentially sleeved on the connecting cable.
In an embodiment of the present invention, the sealing nipple further includes a ferrule sealing seat in threaded connection with the fastening nut, a packing seat connected with the ferrule sealing seat, and a packing assembly sleeved on the link cable; the packing assembly is sleeved between the cutting sleeve sealing seat and the packing seat.
In one embodiment of the present invention, the tool interface comprises a tool joint and a sealing plug; wherein the sealing plug is mounted in the tool joint and connected to the butt copper pipe.
In an embodiment of the present invention, the sealing rubber sleeve further covers a part of the sealing plug.
The utility model has the advantages that:
the utility model discloses a steel pipe cable and the sealing connection of instrument in the pit are realized to multistage sealed mode, have improved sealed reliability, have prolonged the life of instrument in the pit.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of a high-pressure multistage sealing device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a steel pipe cable provided by an embodiment of the present invention;
fig. 3 is a detailed structural diagram of a high-pressure multistage sealing device according to an embodiment of the present invention;
the reference numbers illustrate:
1-sealing short sections; 2-a tool interface; 3-steel tube cable; 11-a fastening nut; 12-a force-transmitting ferrule; 13-sealing the ferrule; 14-ferrule seal seat; 15-packing base; 16-a packing assembly; 17-sealing rubber sleeve; 18-butting copper tubes; 21-a tool joint; 22-a sealing plug; 31-steel tube cable jacket; 32-steel pipe cable insulation layer, 33-steel pipe cable copper core conductor.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the present invention is not limited thereto.
Example one
Referring to fig. 1, fig. 1 is a schematic structural diagram of a high-pressure multistage sealing device according to an embodiment of the present invention, including:
a sealing short section 1;
the tool interface 2 is connected with the sealing short section 1;
the sealing short section 1 comprises a sealing rubber sleeve 17, and at least one part of the sealing rubber sleeve 17 is sleeved on the connecting cable.
In this embodiment, the connection cable is a steel tube cable. Referring to fig. 2 specifically, fig. 2 is a schematic diagram of a steel tube cable structure provided in an embodiment of the present invention, and the steel tube cable 3 includes a steel tube cable shell 31, a steel tube cable insulating layer 32, and a steel tube cable copper core conductor 33.
In this embodiment, a tool interface 2 is provided on the downhole tool to facilitate connection of the downhole tool to a steel pipe cable 3.
Referring to fig. 3, fig. 3 is a detailed structural diagram of a high-pressure multistage sealing device provided in an embodiment of the present invention, the sealing nipple 1 further includes a fastening nut 11, a force-transmitting ferrule 12 and a sealing ferrule 13, which are sequentially sleeved on the steel pipe cable 3; the force transmission clamping sleeve 12 and the sealing clamping sleeve 13 are compressed and deformed under the action of the fastening nut 11 to tightly hold the steel tube cable shell 31, so that the first-stage sealing of the steel tube cable is realized.
In this embodiment, the sealing nipple 1 further includes a ferrule sealing seat 14 in threaded connection with the fastening nut 11, a packing seat 15 connected with the ferrule sealing seat 14, and a packing assembly 16 sleeved on the steel pipe cable 3; wherein, the packing component 16 is sleeved between the cutting sleeve sealing seat 14 and the packing seat 15; the cutting ferrule seal seat 14 is screwed into the packing seat 15, and after the cutting ferrule seal seat 14 and the packing seat 15 are screwed tightly, the packing component 16 is compressed to fill a gap, so that the second-stage sealing of the steel pipe cable is realized.
In the present embodiment, the tool interface 2 includes a tool joint 21 and a sealing plug 22; wherein a sealing plug 22 is installed in the tool joint 21 and connected with the butt copper pipe 18; the butt copper tube 18 is also connected to a steel tube cable copper core conductor 33. In addition, the sealing rubber sleeve 17 also wraps the sealing plug 22 and the steel pipe cable copper core conductor 33, so that the third-stage sealing of the electric steel pipe cable is realized.
Specifically, with fastening nut 11, pass power cutting ferrule 12, sealed cutting ferrule 13, cutting ferrule seal receptacle 14, packing subassembly 16 cover on the steel pipe cable in order, fastening nut 11 and cutting ferrule seal receptacle 14's material hardness is harder, and wherein fastening nut 11 sets up the internal thread, and cutting ferrule seal receptacle 14 sets up the external screw thread, and external screw thread department sets up the conical surface hole, screws up fastening nut 11 and cutting ferrule seal receptacle 14. The sealing cutting sleeve 13 is in a conical surface structure, the material is soft, the material of the force transmission cutting sleeve 12 is soft, the structure is a special step structure, and the step can be matched with the large end of the conical surface of the sealing cutting sleeve 13. Through the tight of fastening nut 11 internal thread and 14 external screw threads of cutting ferrule seal receptacle, under the effect of screw thread between fastening nut 11 and cutting ferrule seal receptacle 14, pass power cutting ferrule 12, sealed cutting ferrule 13 axial is compression deformation, hold steel pipe cable shell 31 tightly, because sealed cutting ferrule 13, pass power cutting ferrule 12 material softer, fastening nut 11, the material of cutting ferrule seal receptacle 14 is harder, sealed cutting ferrule 13, pass power cutting ferrule 12, cutting ferrule seal receptacle 14, form between the steel pipe cable shell 31 and closely laminate, the first order of steel pipe cable is sealed has been realized.
The second-stage sealing is realized by a cutting sleeve sealing seat 14, a packing seat 15 and a packing assembly 16. The packing assembly 16 is composed of three materials, the first is a copper annular gasket with supporting function, the second is a special high-temperature-resistant high-elasticity rubber annular part, the third is a special soft composite (mainly composed of copper powder, graphite and polytetrafluoroethylene) material which is made into an annular part, and an annular columnar structure is formed by alternately combining the three materials. The lower extreme of cutting ferrule seal receptacle 14 sets up the external screw thread, and the upper end of packing seat 15 is provided with the internal thread, and packing subassembly 16 is between cutting ferrule seal receptacle 14 and packing seat. Through the tight screw thread between cutting ferrule seal receptacle 14 and the packing seat 15, packing seal assembly 16 is compressed, fills the space, and cutting ferrule seal receptacle 14, packing seat 15, packing assembly 16, steel pipe cable shell 31 closely laminate, have realized steel pipe cable's second grade is sealed.
The packing seat 15 is filled with silicone grease to perform an insulating protection function, and the packing seat 15 is screwed to the tool joint 21.
The third sealing is mainly realized by a sealing rubber sleeve 17. The sealing rubber sleeve 17 is a specially-made high-temperature-resistant high-elasticity rubber piece which is of a cylindrical structure. Inserting a steel pipe cable copper core conductor 33 into the butt joint copper pipe 18, inserting the butt joint copper pipe 18 onto the sealing plug 22, and inserting the sealing rubber sleeve 17 onto the butt joint copper pipe 18 and the sealing plug 22 to realize butt joint of the signal wire inside the underground tool and the steel pipe cable. Because the sealing rubber sleeve 17 has the characteristic of high elasticity, after the installation is finished, the smaller inner hole of the sealing rubber sleeve 17 is expanded and tightly wraps the butt joint copper pipe 18, the sealing plug 22, the steel pipe cable copper core conductor 33 and the steel pipe cable insulating layer 32, and the third-stage sealing of the steel pipe cable is realized.
The high-pressure multistage sealing device provided by the embodiment is suitable for the high-pressure sealing connection of an oil field downhole tool and a steel pipe cable, the embodiment adopts a multistage sealing mode to realize the reliable sealing of the connection of the downhole tool and the steel pipe cable, the sealing life is prolonged, and the service life of the downhole tool is prolonged.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (5)
1. A high pressure multi-stage seal, comprising:
a sealing short section (1);
the tool interface (2) is connected with the sealing short section (1);
the sealing short section (1) comprises a sealing rubber sleeve (17), and at least one part of the sealing rubber sleeve (17) is sleeved on the connecting cable.
2. The sealing device according to claim 1, characterized in that the sealing sub (1) further comprises a fastening nut (11), a force transmission ferrule (12) and a sealing ferrule (13); the fastening nut (11), the force transmission clamping sleeve (12) and the sealing clamping sleeve (13) are sequentially sleeved on the connecting cable.
3. The sealing device according to claim 2, characterized in that the sealing nipple (1) further comprises a ferrule sealing seat (14) in threaded connection with the fastening nut (11), a packing seat (15) connected with the ferrule sealing seat (14), and a packing assembly (16) sleeved on the connecting cable; the packing assembly (16) is sleeved between the cutting sleeve sealing seat (14) and the packing seat (15).
4. Sealing arrangement according to claim 1, characterized in that the tool interface (2) comprises a tool joint (21) and a sealing plug (22); wherein the sealing plug (22) is mounted in the tool joint (21) and connected to the butt copper tube (18).
5. A sealing arrangement according to claim 4, characterized in that the sealing gum (17) also surrounds a portion of the sealing plug (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920891936.6U CN210460526U (en) | 2019-06-13 | 2019-06-13 | High-pressure multistage sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920891936.6U CN210460526U (en) | 2019-06-13 | 2019-06-13 | High-pressure multistage sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210460526U true CN210460526U (en) | 2020-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920891936.6U Active CN210460526U (en) | 2019-06-13 | 2019-06-13 | High-pressure multistage sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210460526U (en) |
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2019
- 2019-06-13 CN CN201920891936.6U patent/CN210460526U/en active Active
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