CN109915350A - A kind of rodless piston oil well pump and designing technique - Google Patents
A kind of rodless piston oil well pump and designing technique Download PDFInfo
- Publication number
- CN109915350A CN109915350A CN201711314129.XA CN201711314129A CN109915350A CN 109915350 A CN109915350 A CN 109915350A CN 201711314129 A CN201711314129 A CN 201711314129A CN 109915350 A CN109915350 A CN 109915350A
- Authority
- CN
- China
- Prior art keywords
- pump
- well
- piston
- oil
- check valve
- 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.)
- Pending
Links
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The present invention relates to a kind of rodless piston oil well pump and designing techniques, change the oil well pump of down-hole pump tube inner chamber volume with hydraulic power, especially suitable for the use under inclined shaft, horizontal well, the lesser environment of " S " well and wellhead ground spatial position, belong to oil recovery technique field.It is by pump barrel, connecting tube of surging, upper check valve, transfiguration piston, lower check valve, pump chamber composition.It is the method for changing transfiguration piston volume using high frequency, and the high frequency of Lai Shixian pump chamber internal volume changes, to change the pressure in pump chamber, achievees the purpose that extract downhole crude out well head.The present invention has occupied area small, and oil pumping mode is unique, is applicable in the advantages that well shape is wide.
Description
Technical field
The present invention relates to a kind of rodless piston oil well pump and designing techniques, change down-hole pump tube inner chamber volume with hydraulic power
Oil well pump belong to especially suitable for the use under inclined shaft, horizontal well, the lesser environment of " S " well and wellhead ground spatial position
In oil recovery technique field.
Background technique
Well known oil pumping mode generally uses sucker rod to drive oil well pump oil pumping, not only needs a large amount of wellhead installation, but also take out
On the one hand the reciprocating motion of beam hanger makes the component being in contact with it generate biggish abrasion because of friction, on the other hand in inclined shaft, water
It is even more that can not be applicable under horizontal well, the lesser environment of " S " well and wellhead ground spatial position.Simultaneously because underground adverse circumstances cause
The oil well pump service life is extremely short.A kind of product moment formula oil well pump for being adapted to no sucker rod and underground adverse circumstances thus is designed, is solution
The certainly key of the above problem.It had not only extended oil well pump service life, but also solved because of inclined shaft, horizontal well, " S " well and land
Concentrate during well spacing that adjacent well head space is small, neritic area is filled out sea and concentrated and utilizes the discomfort of sucker rod oil pumping under the occasions such as drilling
The problem of answering.
Summary of the invention
The purpose of the present invention is to provide a kind of rodless piston oil well pump and designing techniques, are changed by pump chamber and are changed
The downhole pumping installation of intracavitary oil pressure, it realizes no bar oil pumping, and greatly extends the service life of oil well pump.
To achieve the goals above, the technical scheme is that a kind of rodless piston oil well pump and designing technique, it by
Pump barrel, connecting tube of surging, upper check valve, transfiguration piston, lower check valve, pump chamber are constituted.It is characterized in that the inner cavity of transfiguration piston
One end is equipped with connecting tube of surging；One end of the transfiguration piston is scalable；The transfiguration piston volume is variable.It is described
Pump chamber on lower bottom part be respectively equipped with check valve, lower check valve.
The present invention has occupied area small, and oil pumping mode is unique, is applicable in the advantages that well shape is wide.
Detailed description of the invention
Attached drawing 1 is schematic cross-sectional view of the present invention
In attached drawing, 1. surge connecting tube, and 2. pump housings connect upper screw thread, check valve, 4. pump chambers on 3., 5. transfiguration pistons, 6. pumps
Cylinder, 7. lower check valves, 8. pump housings connect lower screw thread, and 9. filtration net covers, 10. sealing rings, 11. non-movable pistons, 12 reset bullet
Spring.
Specific embodiment
In the present invention, connecting tube of surging 1 is connected with 5 inner cavity of transfiguration piston, under ground hydraulic systemic effect, connection of surging
Pipe 1 makes hydraulic increase in transfiguration piston 5,5 lower end of transfiguration piston being pressed into transfiguration piston 5 under power liquid (such as hydraulic oil)
Elongation downwards and volume becomes larger (while reset spring 12 is compressed), compress the space of the pump chamber 4 of pump barrel 1, the pressure in pump chamber 4
Increase volume to become smaller, lower check valve 7 is closed, and the crude oil in pump chamber 4 is admitted to oil pipe by the discharge of upper check valve 3.When surging
Connecting tube 1 is under ground hydraulic systemic effect, and when transfiguration piston 5 is sucked out in power liquid, transfiguration piston 5 is in inner cavity negative pressure and interior
Upward retraction volume becomes smaller under the action of portion's reset spring 12 restores elastic force, and space becomes larger and forms moment negative pressure in pump chamber 4, on
Check valve 3 is closed, lower check valve 7 is opened, and downhole crude is drawn into pump chamber 4 from lower check valve 7.Pass through ground hydraulic-control system in this way
The effect of system realizes the high-frequency change of 5 volume of transfiguration piston, so that continuously crude oil be discharged from underground through oil pipe
Ground.
In the present invention, the inner cavity of non-movable piston 11 and transfiguration piston 5 is communicated with connecting tube 1 of surging, filtration net cover 9, sealing
Circle 10 is the protection and sealing of non-movable piston 11 and transfiguration piston 5.Pump barrel 1 connects upper screw thread 2 by the pump housing and connects down with the pump housing
Screw thread 9 is connect with box cupling.
Claims (2)
1. a kind of rodless piston oil well pump and designing technique, it is by pump barrel, connecting tube of surging, upper check valve, and transfiguration piston places an order
To valve, pump chamber is constituted, it is characterised in that inner cavity one end of transfiguration piston is equipped with connecting tube of surging；One end of the transfiguration piston
It is scalable；The transfiguration piston volume is variable.
2. a kind of rodless piston oil well pump according to claim 1 and designing technique, it is characterised in that on the pump chamber
Lower bottom part is respectively equipped with check valve, lower check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711314129.XA CN109915350A (en) | 2017-12-12 | 2017-12-12 | A kind of rodless piston oil well pump and designing technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711314129.XA CN109915350A (en) | 2017-12-12 | 2017-12-12 | A kind of rodless piston oil well pump and designing technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109915350A true CN109915350A (en) | 2019-06-21 |
Family
ID=66957221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711314129.XA Pending CN109915350A (en) | 2017-12-12 | 2017-12-12 | A kind of rodless piston oil well pump and designing technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109915350A (en) |
-
2017
- 2017-12-12 CN CN201711314129.XA patent/CN109915350A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20090041596A1 (en) | Downhole Electric Driven Pump Unit | |
| CA2531202A1 (en) | Pumping water from a natural gas well | |
| CN109915350A (en) | A kind of rodless piston oil well pump and designing technique | |
| RU151393U1 (en) | DUAL ACTION Borehole Pump | |
| CN201554632U (en) | Eccentric gap bridge separate-pumping mixed-recovery oil well pump | |
| CN106014910B (en) | Combined type double acting rod-type pumping unit and its oil production method | |
| CN109915349A (en) | Oil rig and designing technique in a kind of novel well | |
| CN109899276A (en) | It is applicable in the oil rig and designing technique of special-shaped well | |
| CN201802599U (en) | Rodless axial product moment-type oil-well pump | |
| RU2321772C1 (en) | Oil-well sucker-rod pump | |
| CN201705632U (en) | Rodless hydraulic deep oil well pump | |
| WO2010118535A4 (en) | Artificial lift and transfer pump | |
| CN102720663A (en) | Special oil-well pump for multifunctional submersible linear motor | |
| CN102465865A (en) | Oil well pump with variable volume cavity | |
| CN101846061A (en) | Rodless hydraulic deep-well oil pump | |
| CN100412368C (en) | Efficient reversed beam-pumping unit | |
| CN201739147U (en) | Rodless oil well lifting system | |
| RU2576560C1 (en) | Well sucker-rod pump | |
| RU153600U1 (en) | DUAL ACTION Borehole Pump | |
| CN102465863A (en) | Radial variable volume cavity oil pump | |
| CN209604233U (en) | Grease divides device for picking | |
| CN202228320U (en) | Tandem type three-cavity oil suction pump | |
| CN202468243U (en) | Rotary-plunger scale-prevention oil-well pump | |
| RU2425253C1 (en) | Borehole plunger pump and protection method of upper part of plunger against impact of pumped liquid | |
| RU152082U1 (en) | HYDRAULIC DRIVE BRAKE DEPTH PUMP |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190621 |
|
| WD01 | Invention patent application deemed withdrawn after publication |