CN216642073U - Load-shedding type oil well pump - Google Patents
Load-shedding type oil well pump Download PDFInfo
- Publication number
- CN216642073U CN216642073U CN202220075409.XU CN202220075409U CN216642073U CN 216642073 U CN216642073 U CN 216642073U CN 202220075409 U CN202220075409 U CN 202220075409U CN 216642073 U CN216642073 U CN 216642073U
- Authority
- CN
- China
- Prior art keywords
- pump
- coupling
- oil
- wall
- outer tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to the technical field of petroleum machinery, in particular to a load-shedding oil well pump. The outer tube is arranged on the outer side of a pump barrel of the device, the upper end of the outer tube is connected with an oil tube through an upper coupling, the inner wall of the lower end of the outer tube is connected with a lower coupling, the lower end of the lower coupling is connected with a fixed valve assembly, the lower end face of the pump barrel is abutted to the step face of the inner wall of the lower coupling, a seal is connected between the outer wall of the lower end of the pump barrel and the inner wall of the upper end of the lower coupling, and the upper end of the pump barrel is connected with a centering coupling and is centered inside the outer tube through the centering coupling. The utility model realizes that the outer pipe is additionally arranged outside the pump cylinder, the outer pipe is connected on the oil pipe, the outer pipe bears the gravity of crude oil, the pump cylinder does not bear the tensile force of the crude oil, the tensile deformation of the pump cylinder is avoided, the normal work of an oil-well pump is ensured, and the service life of the deep-well oil-well pump is prolonged.
Description
The technical field is as follows:
the utility model relates to the technical field of petroleum machinery, in particular to a load-shedding oil well pump.
The background art comprises the following steps:
when oil is extracted from a deep well (the well depth is generally more than 3000 meters), because the crude oil pressure in an oil pipe is large (the pressure is 30Mpa or even higher), the pump cylinder of the oil well pump bears large tensile force, the pump cylinder is deformed (generally reduced diameter) to influence the normal work of the oil well pump, and the pump is blocked when the pump is serious, namely, a plunger and the pump cylinder are blocked.
The utility model has the following contents:
the technical problem to be solved by the utility model is to provide a load-reducing oil well pump, which is characterized in that a layer of outer pipe is additionally arranged outside a pump cylinder, the outer pipe is connected to an oil pipe, the outer pipe bears the gravity of crude oil, the pump cylinder does not bear the tensile force of the crude oil, the tensile deformation of the pump cylinder is avoided, the normal work of the oil well pump is ensured, and the service life of the deep well oil well pump is prolonged. The pump cylinder overcomes the defects that the pump cylinder of the existing deep well oil pump bears larger tensile force and is easy to deform to influence the normal work of the oil pump.
The technical scheme adopted by the utility model is as follows: a load-reducing oil well pump comprises a pump cylinder and a plunger assembly arranged in the pump cylinder; the outer tube is arranged on the outer side of the pump barrel, the upper end of the outer tube is connected with an oil tube through an upper coupling, the inner wall of the lower end of the outer tube is connected with a lower coupling, the lower end of the lower coupling is connected with a fixed valve assembly, the lower end face of the pump barrel is abutted to the step face of the inner wall of the lower coupling, the outer wall of the lower end of the pump barrel is connected and sealed with the inner wall of the upper end of the lower coupling, and the upper end of the pump barrel is connected with a centering coupling and is centered inside the outer tube through the centering coupling.
The inner wall of the upper end of the centralizing coupling is designed into a conical surface.
The utility model has the beneficial effects that: the utility model realizes that the outer pipe is additionally arranged outside the pump cylinder, the outer pipe is connected on the oil pipe, the outer pipe bears the gravity of crude oil, the pump cylinder does not bear the tensile force of the crude oil, the tensile deformation of the pump cylinder is avoided, the normal work of an oil-well pump is ensured, and the service life of the deep-well oil-well pump is prolonged.
Description of the drawings:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural diagram of the present invention.
The specific implementation mode is as follows:
as shown in fig. 1, a load-relief oil well pump includes a pump barrel 4 and a plunger assembly 5 disposed in the pump barrel 4; the outer tube 3 is arranged on the outer side of the pump barrel 4, the upper end of the outer tube 3 is connected with an oil tube through the upper coupling 1, the inner wall of the lower end of the outer tube 3 is connected with the lower coupling, the lower end of the lower coupling is connected with the fixed valve assembly 6, the lower end face of the pump barrel 4 abuts against the step face of the inner wall of the lower coupling, the outer wall of the lower end of the pump barrel 4 is connected and sealed with the inner wall of the upper end of the lower coupling, and the upper end of the pump barrel 4 is connected with the centering coupling 2 and is centered inside the outer tube 3 through the centering coupling 2.
When the plunger assembly is used, the upper end of the pump barrel 4 is of a floating structure and does not bear pulling force, the upper part of the pump barrel 4 is righted by the righting coupling 2, and the inner wall of the upper end of the righting coupling 2 is provided with a conical surface which is convenient for the introduction of the plunger assembly 5 during the operation of going into a well.
Because the lower end of the pump barrel 4 is abutted to the lower coupling, the gravity load of the crude oil is reduced, the outer pipe 3 bears the gravity tension of the crude oil in the oil pipe, and the tensile deformation of the pump barrel 4 is avoided.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the utility model.
Claims (2)
1. A load-reducing oil well pump comprises a pump cylinder (4) and a plunger assembly (5) arranged in the pump cylinder (4); the method is characterized in that: the outer tube (3) is arranged on the outer side of the pump barrel (4), the upper end of the outer tube (3) is connected with the oil tube through the upper coupling (1), the inner wall of the lower end of the outer tube (3) is connected with the lower coupling, the lower end of the lower coupling is connected with the fixed valve assembly (6), the lower end face of the pump barrel (4) is abutted to the step face of the inner wall of the lower coupling, the outer wall of the lower end of the pump barrel (4) is connected with the inner wall of the upper end of the lower coupling in a sealing manner, and the upper end of the pump barrel (4) is connected with the righting coupling (2) and is righted inside the outer tube (3) through the righting coupling (2).
2. The load-shedding oil well pump according to claim 1, characterized in that: the inner wall of the upper end of the centralizing coupling (2) is designed to be a conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220075409.XU CN216642073U (en) | 2022-01-12 | 2022-01-12 | Load-shedding type oil well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220075409.XU CN216642073U (en) | 2022-01-12 | 2022-01-12 | Load-shedding type oil well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216642073U true CN216642073U (en) | 2022-05-31 |
Family
ID=81727429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220075409.XU Active CN216642073U (en) | 2022-01-12 | 2022-01-12 | Load-shedding type oil well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216642073U (en) |
-
2022
- 2022-01-12 CN CN202220075409.XU patent/CN216642073U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202560256U (en) | Plug-in type stand column hydraulic control one-way valve | |
| CN201159064Y (en) | Minor diameter expanding type washable well zonal injection packer | |
| CN216642073U (en) | Load-shedding type oil well pump | |
| CN203702047U (en) | Anchoring structure and downhole plugging device | |
| CN201246136Y (en) | Blowout prevention safety valve of oil pumping machine well head | |
| CN217735436U (en) | Annular blowout preventer capable of sealing well in emergency | |
| CN105020533A (en) | Sealing device used for hydraulic bursting test of fiber composite round pipe | |
| CN213838563U (en) | Hydraulic control oil pipe fixer | |
| CN201650189U (en) | Double-stage sealing device | |
| CN109736745B (en) | Fishable bridge plug convenient for setting and unsetting | |
| CN207073456U (en) | A kind of anti-seizing oil pump | |
| CN208138637U (en) | A kind of biconvex sealing ring cushion rubber | |
| CN208441803U (en) | Low power unseals long packing element type well packer capable of flushing well | |
| CN201180504Y (en) | Fast joint used for petroleum drilling and extraction | |
| CN201209431Y (en) | Oil well big-diameter hydraulic unloading deep pumping device | |
| CN213479249U (en) | Air-releasing water-discharging device for pressure test of steel pipe hydraulic press | |
| CN217872723U (en) | Mounting tool for oil-gas well cementing packing sleeve | |
| CN201568271U (en) | Efficient low-leakage across bridge pump | |
| CN201401148Y (en) | Expanding type capsule sealing anti-spray box | |
| CN214836158U (en) | Shock-absorbing wear-resistant joint for oil well fracturing pipeline | |
| CN214787930U (en) | Gas-proof oil well pump | |
| CN201148851Y (en) | Nonmetal water power anchor | |
| CN219974455U (en) | Automatic liquid level controller | |
| CN217233456U (en) | Novel polished rod sealing device | |
| CN216643360U (en) | Pipeline joint repairing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |