CN201802598U - Rod-free radial product moment oil pump - Google Patents
Rod-free radial product moment oil pump Download PDFInfo
- Publication number
- CN201802598U CN201802598U CN2010201835903U CN201020183590U CN201802598U CN 201802598 U CN201802598 U CN 201802598U CN 2010201835903 U CN2010201835903 U CN 2010201835903U CN 201020183590 U CN201020183590 U CN 201020183590U CN 201802598 U CN201802598 U CN 201802598U
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- pump
- fixed
- way valve
- product moment
- connecting tube
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Abstract
The utility model discloses a rod-free radial product moment oil pump, which is applied to hydraulic rod-free oil production of oilfields. An upper partition board and a lower partition board are fixed in a pump body, a pump cavity is formed in the pump body, a through hole is formed on the upper partition board, a hydraulic connecting pipe is fixed in the through hole, an upper one-way valve is fixed on the upper partition board, a variable capacity piston is fixed on the lower part of the upper partition board, and the liquid access of the variable capacity piston is communicated with the hydraulic connecting pipe. A lower one-way valve is fixed on the lower partition board. The rod-free radial product moment oil pump can realize rod-free oil pumping; and the service life of the oil pump can be prolonged in the absence of mechanical moving parts.
Description
Technical field
The present invention relates to oil recovery technique field, oil field, particularly change the rodless pump of underwell pump intracoelomic cavity volume, belong to down-hole, oil field oil pumping isolated plant with hydraulic power.
Background technique
At present, known oil pumping mode generally adopts sucker rod to drive the oil pump plunger piston to-and-fro motion and realizes oil pumping, not only needs a large amount of well head facilities.Sucker rod to-and-fro motion, the parts wearing and tearing bigger that contact with sucker rod on the one hand because of friction produces; Under the less environment in inclined shaft or horizontal well and well head ground space position, can't be suitable on the other hand; Cause the oil well pump life-span shorter 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.Can prolong oil well pump working life, solve again because of inclined shaft, horizontal well and land concentrate in the well spacing process that adjacent well head space is little, the neritic area is filled out the sea and concentrated and utilize the sucker rod unconformable problem of pumping under the occasion such as drilling.
Summary of the invention
The objective of the invention is: radially product moment formula oil well pump of a kind of no bar is provided, changes by pump chamber and change oil pressure in the pump housing chamber, realize no bar oil pumping, prolong the working life of oil well pump.
The technical solution used in the present invention is: no bar is product moment formula oil well pump radially, mainly is made up of the connecting tube that surges, last one-way valve, transfiguration piston, the pump housing and following one-way valve, and the upper end connecting thread is arranged in the upper end of the cylindrical shape pump housing, and the pump housing is connected on the oil pipe.It is characterized in that: at the pump housing internal fixation upper clapboard and lower clapboard are arranged, make the pump housing form airtight pump chamber, through hole is arranged on upper clapboard, the through hole internal fixation has the connecting tube of surging, and the connecting tube that surges can be connected with the ground hydraulic system by pipeline.Be fixed with one-way valve on the upper clapboard, liquid can only flow out from pump chamber.Be fixed with the transfiguration piston in the bottom of upper clapboard, the liquid entrance of transfiguration piston and the connecting tube UNICOM of surging.Be fixed with one-way valve down on lower clapboard, down-hole liquid can only flow into pump chamber.
For the lower end at the pump housing connects the down-hole oil production instrument, the lower end connecting thread is arranged in the lower end of the cylindrical shape pump housing.
Described transfiguration piston is a columniform airtight thin walled cavity, the transfiguration piston wall adopts elastic material to make, as rubber, plastics or resilient composite material, the transfiguration internal piston charges into the radial expansion of highly pressurised liquid transfiguration piston energy, and liquid flows out the transfiguration piston can radial contraction.
Flexible composite material is to be compounded with elastic steel sheet in the transfiguration piston wall in described.
The bottom of described upper clapboard is fixed with the transfiguration piston, is that the connecting tube that surges passes upper clapboard, and the liquid entrance of transfiguration piston is fixed on the lower end of the connecting tube that surges.
Beneficial effect of the present invention: the present invention does not have radially product moment formula oil well pump of bar, changes by pump chamber and changes oil pressure in the pump housing chamber, can realize no bar oil pumping, and not have mechanical moving element, can prolong the working life of oil well pump; It is little to have floor space, oil pumping mode uniqueness, advantage such as applied widely.
Description of drawings
Fig. 1 is that the present invention does not have radially product moment formula oil well pump structural profile schematic representation of bar.
Among the figure, the connecting tube that 1. surges, 2. the upper end connecting thread is 3. gone up one-way valve, 4. pump chamber, 5. transfiguration piston, 6. the pump housing 7. plays one-way valve, 8. the lower end connecting thread.
Embodiment
Embodiment 1: with a no bar radially product moment formula oil well pump be example, the present invention is described in further detail.
Consult Fig. 1.The present invention does not have radially product moment formula oil well pump of bar, mainly is made up of the connecting tube 1 that surges, last one-way valve 3, transfiguration piston 5, the pump housing 6 and following one-way valve 7.
Upper end connecting thread 2 is arranged in the upper end of the cylindrical shape pump housing 6; In the lower end of the cylindrical shape pump housing 6 lower end connecting thread 8 is arranged.At the pump housing 6 internal fixation a upper clapboard and a lower clapboard are arranged, make airtight pump chamber 4 of the pump housing 6 inner formation.At the upper clapboard center through hole is arranged, is welded with the connecting tube 1 that surges in the through hole, on the upper clapboard and the connecting tube 1 that surging around what be fixed with that 3, four on one-way valve on four goes up that one-way valves 3 adopt is ball valve.Be fixed with transfiguration piston 5 in the bottom of upper clapboard, the liquid entrance of transfiguration piston 5 and connecting tube 1 UNICOM of surging can adopt the connecting tube 1 that surges to pass upper clapboard, and the liquid entrance of transfiguration piston 5 is fixed on the lower end of the connecting tube 1 that surges.Transfiguration piston 5 is columniform airtight thin walled cavities, and transfiguration piston 5 walls adopt rubber combined flexible steel disc to make.
On lower clapboard, be fixed with a following one-way valve 7.
No bar is the working principle of product moment formula oil well pump radially:
Consult Fig. 1.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 (as hydraulic oil), make hydraulic pressure increase in the transfiguration piston 5 (elastic steel sheet that its inside of while is provided with is stretched), because transfiguration piston 5 is that telescopic material forms (inflatable), it is big that 5 radial expansions of transfiguration piston become, thereby pump chamber 4 volumes of the pump housing 6 diminish, pressure increases, one-way valve 7 is closed, go up simultaneously one-way valve 3 and open, the crude oil in the pump chamber 4 is discharged by last one-way valve 3 and is admitted in the 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 inner elastomeric steel disc contraction elasticity, it is big that pump chamber 4 volumes of the pump housing 6 become, form the moment negative pressure in the pump chamber 4, last one-way valve 3 is closed, one-way valve 7 is opened down, and down-hole crude oil is drawn in the pump chamber 4 from following one-way valve 7.Pass through the effect of ground hydraulic control system like this, the high-frequency expansion and the contraction of transfiguration piston 5, thus crude oil is discharged from the down-hole continuously.
Claims (4)
1. no bar product moment formula oil well pump radially, mainly by the connecting tube that surges (1), go up one-way valve (3), transfiguration piston (5), the pump housing (6) and following one-way valve (7) and form connecting thread (2) on having in the upper end of the cylindrical shape pump housing (6); It is characterized in that: upper clapboard and lower clapboard are arranged at the pump housing (6) internal fixation, the pump housing (6) forms airtight pump chamber (4), through hole is arranged on upper clapboard, the through hole internal fixation has the connecting tube of surging (1), be fixed with one-way valve (3) on the upper clapboard, be fixed with transfiguration piston (5) in the bottom of upper clapboard, the liquid entrance of transfiguration piston (5) and connecting tube (1) UNICOM of surging, on lower clapboard, be fixed with one-way valve (7) down, described transfiguration piston (5) is a columniform airtight thin walled cavity, and transfiguration piston (5) wall adopts elastic material to make.
2. no bar according to claim 1 is product moment formula oil well pump radially, it is characterized in that: in the lower end of the cylindrical shape pump housing (6) lower end connecting thread (8) is arranged.
3. no bar according to claim 1 and 2 is product moment formula oil well pump radially, it is characterized in that: be compounded with elastic steel sheet in transfiguration piston (5) wall.
4. no bar according to claim 1 and 2 is product moment formula oil well pump radially, it is characterized in that: the connecting tube that surges (1) passes upper clapboard, and the liquid entrance of transfiguration piston (5) is fixed on the lower end of the connecting tube that surges (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201835903U CN201802598U (en) | 2010-04-30 | 2010-04-30 | Rod-free radial product moment oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201835903U CN201802598U (en) | 2010-04-30 | 2010-04-30 | Rod-free radial product moment oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802598U true CN201802598U (en) | 2011-04-20 |
Family
ID=43872099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201835903U Expired - Lifetime CN201802598U (en) | 2010-04-30 | 2010-04-30 | Rod-free radial product moment oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201802598U (en) |
-
2010
- 2010-04-30 CN CN2010201835903U patent/CN201802598U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110420 |
|
| CX01 | Expiry of patent term |