CN102465864A - Oil well pump with axial variable volume cavity - Google Patents
Oil well pump with axial variable volume cavity Download PDFInfo
- Publication number
- CN102465864A CN102465864A CN2010105505095A CN201010550509A CN102465864A CN 102465864 A CN102465864 A CN 102465864A CN 2010105505095 A CN2010105505095 A CN 2010105505095A CN 201010550509 A CN201010550509 A CN 201010550509A CN 102465864 A CN102465864 A CN 102465864A
- Authority
- CN
- China
- Prior art keywords
- well
- oil
- pump
- way valve
- oil well
- 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
Images
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The invention relates to an oil well pump in an oil pumping device in a well, particularly to a variable structure of an axial pump cavity of the oil well pump in the oil pumping device in the well, which is particularly suitable for an oil extraction device for an inclined shaft, a horizontal well and an ''S'' well in smaller well mouth ground space and belongs to the technical field of oil extraction. The oil well pump is composed of a pump barrel, a hydraulic drive connecting pipe, an upper one-way valve, a variable volume piston, a lower one-way valve, and a pump cavity. The high frequency change of the volume in the pump cavity is realized by using a method of changing the volume of the variable volume piston by high frequency, so that the pressure in the pump cavity is changed to realize the aim of pumping underground raw oil out of the well mouth. The oil well pump provided by the invention has the advantages of small floor area, special oil pumping way, wide suitability of well shapes, and the like.
Description
Technical field
The present invention relates to a kind of oil well pump in the oil rig in the well; Relate in particular to the varistructure of the axial pump chamber of oil well pump in the interior oil rig of a kind of well; Be specially adapted to the extracting device of oil of well head ground space position, belong to the oil recovery technique field than the inclined shaft under the microhabitat, horizontal well, " S " well.
Figure viewed from behind technology
Known oil pumping mode generally adopts sucker rod to drive the oil well pump oil pumping; Not only need a large amount of well head facilities; And the to-and-fro motion of sucker rod; Make the parts wearing and tearing bigger that are in contact with it on the one hand, under the less environment in inclined shaft, horizontal well, " S " well and well head ground space position, can't be suitable for especially on the other hand because of friction produces.Cause the oil well pump life-span extremely short because of the down-hole rugged environment simultaneously.Thereby design a kind of product moment formula oil well pump that is adapted to not have sucker rod and down-hole rugged environment, be the key that addresses the above problem.It had both prolonged oil well pump working life, had solved again because of inclined shaft, horizontal well, " S " well and land concentrate that adjacent well head space in the well spacing process is little, the neritic area is filled out the sea and concentrated the unconformable problem of utilizing the sucker rod oil pumping under the occasion such as drilling.
Summary of the invention
The object of the present invention is to provide a kind of through changing the pump chamber axial volume, thereby realize changing the down-hole oil rig of oil pressure in the chamber, it has realized that no bar pumps, and has greatly prolonged the working life of oil well pump.
To achieve these goals, technological scheme of the present invention is: it is by pump barrel, the connecting tube that surges, and last one-way valve, the transfiguration piston, following one-way valve, pump chamber constitutes.Inner chamber one end that it is characterized in that the transfiguration piston is provided with the connecting tube that surges; The frame of described transfiguration piston is telescopic material; Described transfiguration piston volume is variable.Lower bottom part is respectively equipped with one-way valve, following one-way valve on the described pump chamber.
It is little that the present invention has floor space, and the oil pumping mode is unique, is suitable for advantages such as well shape is wide.
Description of drawings
Accompanying drawing is a sectional structure schematic representation of the present invention
In the accompanying drawing, the connecting tube that 1. surges, 2. the pump housing connect to be gone up screw thread, 3. goes up one-way valve, 4. pump chamber, 5. transfiguration piston, 6. spring, 7. pump barrel 8. plays one-way valve, and 9. the pump housing connects screw thread down.
Embodiment
Among the present invention, the connecting tube 1 that surges links to each other with transfiguration piston 5 inner chambers, under the ground hydraulic systemic effect; Surge connecting tube 1 compressing into transfiguration piston 5 under the power liquid (like hydraulic oil); Make that hydraulic pressure increase in the transfiguration piston 5 (spring that is provided with of its inside is stretched simultaneously), because transfiguration piston 5 is that telescopic material forms, transfiguration piston 5 elongations and volume becomes big; The space of the pump chamber 4 of compression pump barrel 1; Pressure in the pump chamber 4 increases smaller volume, and following one-way valve 8 is closed, and the crude oil in the pump chamber 4 is discharged through last one-way valve 3 and is admitted to oil pipe.When surging connecting tube 1 under the ground hydraulic systemic effect; During power liquid sucking-off transfiguration piston 5; Transfiguration piston 5 shrinks under the effect of inner chamber negative pressure and contained spring 6 contraction elasticity, smaller volume, and the space becomes big and forms the moment negative pressure in the pump chamber 4; Last one-way valve 3 is closed, one-way valve 8 is opened down, and down-hole crude oil is drawn in the pump chamber 4 from following one-way valve 8.Through the effect of ground hydraulic control system, realize the high-frequency expansion and the contraction of transfiguration piston 5, thereby continuously crude oil is discharged ground from the down-hole through oil pipe like this.
Among the present invention, screw thread 9 was connected with box cupling under pump barrel 1 was connected with the pump housing through the last screw thread 2 of pump housing connection.
Claims (2)
1. axially variable cavity volume oil well pump, it is by pump barrel, the connecting tube that surges, last one-way valve, the transfiguration piston, following one-way valve, pump chamber constitutes.Inner chamber one end that it is characterized in that variable displacement piston type is provided with the connecting tube that surges; The frame of described transfiguration piston is telescopic material, and described transfiguration piston volume is variable.
2. a kind of axially variable cavity volume oil well pump according to claim 1 is characterized in that lower bottom part is respectively equipped with one-way valve, following one-way valve on the described pump chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105505095A CN102465864A (en) | 2010-11-19 | 2010-11-19 | Oil well pump with axial variable volume cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105505095A CN102465864A (en) | 2010-11-19 | 2010-11-19 | Oil well pump with axial variable volume cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102465864A true CN102465864A (en) | 2012-05-23 |
Family
ID=46069872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105505095A Pending CN102465864A (en) | 2010-11-19 | 2010-11-19 | Oil well pump with axial variable volume cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102465864A (en) |
-
2010
- 2010-11-19 CN CN2010105505095A patent/CN102465864A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104612928B (en) | Hydraulic bidirectional effect pumping installations | |
| CN207813596U (en) | Note adopts integral oil suction pump and note adopts integral tubular column | |
| CN205189836U (en) | Liquid drives screw pump oil production equipment | |
| CN202768405U (en) | All-metal screw rod type oil-well pump for deep well | |
| CN102465865A (en) | Oil well pump with variable volume cavity | |
| CN102465864A (en) | Oil well pump with axial variable volume cavity | |
| CN201606228U (en) | Plunger type diaphragm pump of submersible motor | |
| CN201802599U (en) | Rodless axial product moment-type oil-well pump | |
| CN102465863A (en) | Radial variable volume cavity oil pump | |
| CN106014910B (en) | Combined type double acting rod-type pumping unit and its oil production method | |
| CN201531398U (en) | Anti-sway wear-pump oil pump | |
| RU2459115C2 (en) | Rod pump unit | |
| CN201851321U (en) | Electric submersible bidirectional tubular oil-well pump | |
| CN103775318A (en) | Hydraulic transmission rodless oil pumping system | |
| CN202914046U (en) | Plug-in type screw pump system | |
| CN109915349A (en) | Oil rig and designing technique in a kind of novel well | |
| CN201705632U (en) | Rodless hydraulic deep oil well pump | |
| CN109915350A (en) | A kind of rodless piston oil well pump and designing technique | |
| CN109899276A (en) | It is applicable in the oil rig and designing technique of special-shaped well | |
| CN106468257A (en) | A kind of Novel oil well pump | |
| CN201802598U (en) | Rod-free radial product moment oil pump | |
| CN201739147U (en) | Rodless oil well lifting system | |
| CN101846061A (en) | Rodless hydraulic deep-well oil pump | |
| CN201053305Y (en) | Straight line reciprocating oil-submersible rodless double-pump pipe column | |
| CN2556364Y (en) | Downhole oil-water separating device for continuous oil feeding oil well pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120523 |