CN214944174U - Novel high-pressure sealing structure on concentric double-pipe underground hydraulic jet pump - Google Patents
Novel high-pressure sealing structure on concentric double-pipe underground hydraulic jet pump Download PDFInfo
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- CN214944174U CN214944174U CN202023067693.6U CN202023067693U CN214944174U CN 214944174 U CN214944174 U CN 214944174U CN 202023067693 U CN202023067693 U CN 202023067693U CN 214944174 U CN214944174 U CN 214944174U
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Abstract
The utility model provides a novel high pressure seal structure on concentric double-barrelled downhole hydraulic jet pump belongs to the structure on the hydraulic jet pump for the oil field oil recovery, and it has the outer pump barrel on the pump body, and outer pump barrel links together through screw thread and outer oil pipe outer pump barrel in have the interior pump barrel on the pump body, outer oil pipe inboard has interior oil pipe, the sealing plug upper end is in the same place through threaded connection with interior oil pipe, in the pump barrel including the lower part of sealing plug is pegged graft, has the sealing washer on the inboard sealing plug outer wall of interior pump barrel. By adopting the high-pressure sealing structure, the construction link of alternately connecting the inner oil pipe and the outer oil pipe is avoided, the operation construction difficulty is reduced, the construction efficiency is improved, the sealing performance of the jet pump can be ensured, and the sealing effect is good.
Description
Technical Field
The utility model relates to a structure on the hydraulic jet pump for oil recovery in the oil field, especially a high pressure seal structure on concentric double-barrelled hydraulic jet pump in pit.
Background
The concentric double-pipe underground hydraulic jet pump has wide application range in the process of crude oil extraction. The sealing structure of the existing pump type mostly adopts oil pipe threaded connection to realize sealing, an outer pump cylinder of the pump is connected with the outer oil pipe, and an inner pump cylinder is connected with the inner oil pipe. When the pump body of the lower injection pump is used, the inner oil pipe firstly penetrates through the outer oil pipe, the elevator is respectively arranged on the right sides of the inner oil pipe coupling and the outer oil pipe coupling, the inner oil pipe elevator is seated on the outer oil pipe coupling, and the inner oil pipe penetrates through the outer oil pipe and then is exposed for a certain length. Then, a first inner oil pipe is fastened with an inner pump barrel of the jet pump through threads, an outer oil pipe is fastened with an outer pump barrel of the jet pump through threads, the operating machine lifts the outer oil pipe elevator to lift the pump body and the outer oil pipe to go down the well, and the outer oil pipe elevator is seated on a well head; then, a second inner oil pipe penetrates through the outer oil pipe, an elevator is respectively installed on the right sides of the inner oil pipe coupling and the outer oil pipe coupling, the inner oil pipe elevator is seated on the outer oil pipe coupling, the inner oil pipe penetrates through the outer oil pipe and then is exposed to a certain length, the second outer oil pipe elevator is hoisted by the operating machine, the second inner oil pipe is connected and fastened with the first inner oil pipe, the second outer oil pipe is connected and fastened with the first outer oil pipe, the second inner oil pipe and the second outer oil pipe are put into a well, and the second outer oil pipe elevator is seated on a well head; and sequentially putting the inner oil pipe and the outer oil pipe in the sequence until the jet pump is lowered to the designed depth. The alternate connection construction mode is adopted, the sealed connection and sealing mode is realized by adopting the threaded connection of the oil pipes, alternate connection construction is needed, and the construction difficulty is high, the speed is low, and the working efficiency is low.
Disclosure of Invention
The utility model aims to solve the technical problem that a novel high-pressure seal structure on concentric double-barrelled hydraulic jet pump in pit is provided to reduce the connection, the sealed degree of difficulty, improve the efficiency of construction.
The utility model discloses a realize like this, a novel high pressure seal structure on concentric double-barrelled downhole hydraulic jet pump, including the outer pump barrel on the pump body, outer pump barrel links together through screw thread and outer oil pipe outer pump barrel in have the interior pump barrel on the pump body, outer oil pipe inboard has interior oil pipe, the sealing plug upper end is in the same place through threaded connection with interior oil pipe, in the pump barrel including the lower part of sealing plug is pegged graft, has the sealing washer on the inboard sealing plug outer wall of interior pump barrel.
The sealing ring is an O-shaped sealing ring.
The high-pressure sealing structure with the structure is simple in structure, when the hydraulic jet pump is launched, the first outer oil pipe and the outer pump barrel of the jet pump are connected and fastened, and the outer oil pipe is sequentially launched until the jet pump body with the inner pump barrel is launched to the designed depth; and connecting the sealing plug with the first inner oil pipe, and sequentially lowering the inner oil pipe until the sealing plug is inserted into the inner pump barrel in place. Therefore, the construction link of alternately connecting the inner oil pipe and the outer oil pipe is omitted, the operation construction difficulty is reduced, the construction efficiency is improved, the sealing performance of the jet pump can be ensured, and the sealing effect is good.
Drawings
FIG. 1 is a schematic view of a high pressure seal on a prior art concentric dual tube downhole hydrajet pump.
Fig. 2 is a schematic diagram of the novel high pressure seal structure on the concentric dual tube downhole hydraulic jet pump of the present invention.
Fig. 3 is a schematic view of the operation of inserting the inner and outer oil pipes when the present invention is in use.
In the figure, 2, a pump body; 21. an outer oil pipe; 22. an inner oil pipe; 23. an outer pump barrel; 24. an inner pump barrel; 25. sealing the plug; 26. a seal ring; 5. an inner oil pipe elevator; 6. and (4) an outer oil pipe elevator.
Detailed Description
The following embodiment is provided in conjunction with the accompanying drawings to further illustrate the specific structure of the present invention.
As shown in the attached drawing, the utility model relates to a novel high pressure seal structure on concentric double-barrelled downhole hydraulic jet pump, including the outer pump barrel 23 on the pump body 2, outer pump barrel links together through screw thread and outer oil pipe 21 outer pump barrel in have the interior pump barrel 24 on the pump body, outer oil pipe inboard has interior oil pipe 22, seal plug 25 upper end and interior oil pipe pass through threaded connection together, seal plug's lower part is pegged graft in the pump barrel, has sealing washer 26 on the inboard seal plug outer wall of interior pump barrel.
As shown in fig. 3, when the jet pumps are connected in the well, the outer tubing thread and the concentric tube jet pump outer pump barrel thread are used for connecting and tightening the outer tubing thread and the concentric tube jet pump outer pump barrel thread on the ground, an outer tubing elevator 6 is drilled on the outer tubing below the coupling, the working machine is used for hoisting the outer tubing elevator to enable the outer tubing and the pump body of the jet pump connected on the outer tubing to be put in the well, and the elevator is seated on the well head. Then the outer oil pipe is connected in sequence until the pump body of the jet pump is driven to the designed depth. And installing a sealing ring on the sealing plug, tightening the upper parts of the inner oil pipe and the sealing plug through threaded connection, drilling an inner oil pipe elevator 5 on the inner oil pipe below the coupling, hoisting the inner oil pipe elevator by using an operating machine, putting the inner oil pipe and the sealing plug into the outer oil pipe, and sequentially connecting the inner oil pipe until the sealing plug is inserted into the position shown in the figure of the pump cylinder in the injection pump. And finally installing a wellhead device.
The sealing ring is an O-shaped sealing ring.
The above-mentioned embodiments are only one of the preferred embodiments of the present invention, and the general changes and substitutions performed by those skilled in the art within the technical scope of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. The utility model provides a novel high pressure seal structure on concentric double-barrelled downhole hydraulic jet pump, includes outer pump barrel (23) on the pump body (2), outer pump barrel links together through screw thread and outer oil pipe (21), its characterized in that outer pump barrel in have interior pump barrel (24) on the pump body, outer oil pipe inboard has interior oil pipe (22), seal plug (25) upper end and interior oil pipe pass through threaded connection together, the lower part of seal plug is pegged graft in including the pump barrel, has sealing washer (26) on the inboard seal plug outer wall of interior pump barrel.
2. The new high pressure seal configuration on a concentric dual tube downhole hydrajet pump of claim 1 wherein said seal ring (26) is an O-ring seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023067693.6U CN214944174U (en) | 2020-12-18 | 2020-12-18 | Novel high-pressure sealing structure on concentric double-pipe underground hydraulic jet pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023067693.6U CN214944174U (en) | 2020-12-18 | 2020-12-18 | Novel high-pressure sealing structure on concentric double-pipe underground hydraulic jet pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214944174U true CN214944174U (en) | 2021-11-30 |
Family
ID=79113565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023067693.6U Active CN214944174U (en) | 2020-12-18 | 2020-12-18 | Novel high-pressure sealing structure on concentric double-pipe underground hydraulic jet pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214944174U (en) |
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2020
- 2020-12-18 CN CN202023067693.6U patent/CN214944174U/en active Active
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