CN102465863A - Radial variable volume cavity oil pump - Google Patents
Radial variable volume cavity oil pump Download PDFInfo
- Publication number
- CN102465863A CN102465863A CN2010105505076A CN201010550507A CN102465863A CN 102465863 A CN102465863 A CN 102465863A CN 2010105505076 A CN2010105505076 A CN 2010105505076A CN 201010550507 A CN201010550507 A CN 201010550507A CN 102465863 A CN102465863 A CN 102465863A
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- China
- Prior art keywords
- oil
- pump
- well
- way valve
- oil pump
- 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.)
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Abstract
The invention relates to an oil pump in a well oil pumping device, in particular to a variable structure of a radial pump cavity of an oil pump in a well oil pumping device, and belongs to the technical field of oil recovery. The oil pump is particularly suitable for an oil recovery device for an inclined well, a horizontal well or an 'S' well under the environment of a small wellhead ground space position. The oil pump consists of a pump barrel, a hydraulic connecting pipe, an upper one-way valve, a variable volume piston, a lower one-way valve and a pump cavity. The volume of the variable volume piston is changed by using high frequency, so that high-frequency change of the volume in the pump cavity is realized, the pressure in the pump cavity is changed and the aim of pumping underground crude oil out of the wellhead is fulfilled. The oil pump has the advantages of small occupied area, unique oil pumping mode, wide applicable well shape 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 in a kind of well in the oil rig the radially varistructure of pump chamber of oil well pump; 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 radially volume of pump chamber, 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. radially 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 radially 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 |
|---|---|---|---|
| CN2010105505076A CN102465863A (en) | 2010-11-19 | 2010-11-19 | Radial variable volume cavity oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105505076A CN102465863A (en) | 2010-11-19 | 2010-11-19 | Radial variable volume cavity oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102465863A true CN102465863A (en) | 2012-05-23 |
Family
ID=46069871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105505076A Pending CN102465863A (en) | 2010-11-19 | 2010-11-19 | Radial variable volume cavity oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102465863A (en) |
-
2010
- 2010-11-19 CN CN2010105505076A patent/CN102465863A/en active Pending
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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 |