CN2591272Y - Condensed oil pump with weighing rod under pump - Google Patents
Condensed oil pump with weighing rod under pump Download PDFInfo
- Publication number
- CN2591272Y CN2591272Y CN 02295735 CN02295735U CN2591272Y CN 2591272 Y CN2591272 Y CN 2591272Y CN 02295735 CN02295735 CN 02295735 CN 02295735 U CN02295735 U CN 02295735U CN 2591272 Y CN2591272 Y CN 2591272Y
- Authority
- CN
- China
- Prior art keywords
- pump
- thick oil
- valve
- pump barrel
- oil
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a condensed oil pump with a weighing rod under a pump, which is composed of an upper pump cylinder, an upper plunger, an oil outlet valve set, an aligning device, an oil inlet valve, a lower pump cylinder, a lower plunger and a weighting rod. When a pumping rod moves downwards, the outer pressure of the pump is low; the high-pressure bearing area of the upper end face of the upper plunger is larger than that of the lower end face; one downward feedback force can be generated under the action of area difference and pressure difference; the feedback force can aid the downward movement of the pumping rod; thereby, the friction resistance of the pumping rod caused by thick oil can be overcome, causing that a thick oil well can normally regular carry out production. The lower part of the lower plunger is coupled with one given weight force; the downward movement force can be enlarged; the thick oil pumping capacity can be improved. The valve body is an eccentric structure; the diameter of a valve ball can be enlarged, causing that the operation of thick oil in a well is flexible; the closing is in time; the reliability of a thick oil pump can be increased.
Description
One, technical field
The utility model is the Special subsurface pump that the oil-field thick-oil pumping well is used, and particularly a kind of pump is the thick oil pump of band weighted lever down.
Two, background technique
The 89201356.7 hydraulic pressure feedback thick oil pump of prior art, the long polished rod of smooth solid cylinder is equipped with in the lower end, and its lower end is the guiding awl, under the guiding awl other parts is not installed.The oiling valve of this pump adopts loop configuration, is distributed on the valve body by a plurality of valve balls, valve seat, and is malfunctioning if any a valve ball, valve seat, hydraulic pressure feedback thick oil pump just can not be pumped, and the oiling valve of this structure, the valve ball diameter is little, it is ineffective to be easy to work in viscous crude, causes that oil well is not fuel-displaced.
Three, summary of the invention
The objective of the invention is to design the thick oil pump of band weighted lever under a kind of pump, make and to be with weighted lever under its pump, increase descending power, improve the ability of taking out viscous crude.Valve body is an eccentric structure, has increased the valve ball diameter, and it is worked in thick oil well flexibly, closes in time, improves the reliability of thick oil pump.
This pump is made up of last pump barrel, upper plug, outlet valve group, aligning device, oiling valve, following pump barrel, lower plunger, weighted lever.Upper plug is in the pump barrel, and the upper plug bottom connects the outlet valve group, and outlet valve group bottom connects aligning device, and the aligning device bottom connects lower plunger, and the lower plunger bottom connects weighted lever.Last pump barrel bottom connects oiling valve top, and the oiling valve bottom connects pump barrel top down.The axis of thread that screw thread that valve body top connects with last pump barrel in the oiling valve and bottom connect with following pump barrel does not overlap with the valve outer surface cylinder axis.Lower plunger is in the following pump barrel.
Upper plug top connects sucker rod, and when the pumping unit upstroke of ground, pumping unit drives that sucker rod, upper plug, outlet valve group, aligning device, lower plunger, weighted lever are up, and the outlet valve group is closed, and the oil suction chamber volume increases, and pressure descends, and oiling valve is opened.When the pumping unit down stroke of ground, sucker rod, upper plug, outlet valve group, aligning device, lower plunger, weighted lever are descending, and the oil suction chamber volume reduces, and pressure rises, and oiling valve cuts out, and the outlet valve group is opened.At this moment the pump pressure outside is low, the area that high pressure is born in the upper plug upper-end surface bears the area of high pressure greater than the lower end surface, therefore, under area difference and pressure difference effect, produce a downward power, be called feedback force, this feedback force helps sucker rod descending, thereby overcomes the surface friction drag of viscous crude to sucker rod, makes thick oil well energy ordinary production.
The beneficial effects of the utility model are: when sucker rod is descending, the pump pressure outside is low, the area that high pressure is born in the upper plug upper-end surface bears the area of high pressure greater than the lower end surface, under area difference and pressure difference effect, produce a downward feedback force, this feedback force helps sucker rod descending, thereby overcome the surface friction drag of viscous crude, make thick oil well energy ordinary production sucker rod.Because the lower plunger bottom has connected the weighted lever of constant weight, increase descending power again, improved the ability of taking out viscous crude.Valve body is an eccentric structure, has increased the valve ball diameter, and it is worked in thick oil well flexibly, closes in time, has improved the reliability of thick oil pump.
Four, description of drawings
Accompanying drawing is the utility model embodiment's a erection drawing.
Among the figure: the 1st, last pump barrel, the 2nd, upper plug, the 3rd, outlet valve group, the 4th, aligning device, the 5th, oiling valve, the 6th, following pump barrel, the 7th, lower plunger, the 8th, weighted lever.
Five, embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described.
The utility model is the thick oil pump of band weighted lever under the pump, and it is made up of last pump barrel 1, upper plug 2, outlet valve group 3, aligning device 4, oiling valve 5, following pump barrel 6, lower plunger 7, weighted lever 8.Upper plug 2 is in the pump barrel 1, and upper plug 2 bottoms connect outlet valve group 3, and outlet valve group 3 bottoms connect aligning device 4, and aligning device 4 bottoms connect lower plunger 7, and lower plunger 7 bottoms connect weighted lever 8.Last pump barrel 1 bottom connects oiling valve 5 tops, and oiling valve 5 bottoms connect pump barrel 6 tops down.The axis of thread that screw thread that valve body top connects with last pump barrel 1 in the oiling valve 5 and bottom connect with following pump barrel 6 does not overlap with the valve outer surface cylinder axis.Lower plunger 7 is in the following pump barrel 6.
Upper plug 2 tops connect sucker rod, and when the pumping unit upstroke of ground, it is up that pumping unit drives sucker rod, upper plug 2, outlet valve group 3, aligning device 4, lower plunger 7, weighted lever 8, outlet valve group 3 is closed, the oil suction chamber volume increases, and pressure descends, and oiling valve 5 is opened.When the pumping unit down stroke of ground, sucker rod, upper plug 2, outlet valve group 3, aligning device 4, lower plunger 7, weighted lever 8 are descending, and the oil suction chamber volume reduces, and pressure rises, and oiling valve 5 cuts out, and outlet valve group 3 is opened.At this moment the pump pressure outside is low, the area that high pressure is born in upper plug 2 upper-end surfaces bears the area of high pressure greater than the lower end surface, therefore, under area difference and pressure difference effect, produce a downward power, be called feedback force, this feedback force helps sucker rod descending, thereby overcomes the surface friction drag of viscous crude to sucker rod, makes thick oil well energy ordinary production.
Claims (1)
1, a kind of pump is the thick oil pump of band weighted lever down, by last pump barrel (1), upper plug (2), outlet valve group (3), aligning device (4), oiling valve (5), following pump barrel (6), lower plunger (7), weighted lever (8) is formed, it is characterized in that: upper plug (2) is in the pump barrel (1), upper plug (2) bottom connects outlet valve group (3), outlet valve group (3) bottom connects aligning device (4), aligning device (4) bottom connects lower plunger (7), lower plunger (7) bottom connects weighted lever (8), last pump barrel (1) bottom connects oiling valve (5) top, oiling valve (5) bottom connects pump barrel (6) top down, and the axis of thread that screw thread that valve body top connects with last pump barrel (1) in the oiling valve (5) and bottom connect with following pump barrel (6) does not overlap with the valve outer surface cylinder axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02295735 CN2591272Y (en) | 2002-12-28 | 2002-12-28 | Condensed oil pump with weighing rod under pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02295735 CN2591272Y (en) | 2002-12-28 | 2002-12-28 | Condensed oil pump with weighing rod under pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2591272Y true CN2591272Y (en) | 2003-12-10 |
Family
ID=33752606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02295735 Expired - Fee Related CN2591272Y (en) | 2002-12-28 | 2002-12-28 | Condensed oil pump with weighing rod under pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2591272Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949277A (en) * | 2010-08-21 | 2011-01-19 | 中国石油化工股份有限公司 | Oil extraction method of weight adding under pump and oil well pump with weight adding under pump |
| CN112593904A (en) * | 2021-01-12 | 2021-04-02 | 东营新佳环保技术开发有限公司 | Hydraulic oil extraction device |
-
2002
- 2002-12-28 CN CN 02295735 patent/CN2591272Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949277A (en) * | 2010-08-21 | 2011-01-19 | 中国石油化工股份有限公司 | Oil extraction method of weight adding under pump and oil well pump with weight adding under pump |
| CN101949277B (en) * | 2010-08-21 | 2013-07-03 | 中国石油化工股份有限公司 | Oil extraction method of weight adding under pump and oil well pump with weight adding under pump |
| CN112593904A (en) * | 2021-01-12 | 2021-04-02 | 东营新佳环保技术开发有限公司 | Hydraulic oil extraction device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |