CN2816410Y - Double-valve equal-diameter strong corrosion-resisting efficient deep-pumping pump - Google Patents
Double-valve equal-diameter strong corrosion-resisting efficient deep-pumping pump Download PDFInfo
- Publication number
- CN2816410Y CN2816410Y CN 200520097818 CN200520097818U CN2816410Y CN 2816410 Y CN2816410 Y CN 2816410Y CN 200520097818 CN200520097818 CN 200520097818 CN 200520097818 U CN200520097818 U CN 200520097818U CN 2816410 Y CN2816410 Y CN 2816410Y
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- China
- Prior art keywords
- valve
- pump
- plunger
- pump barrel
- oil well
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Abstract
The utility model discloses a double-valve equal-diameter strongly corrosion resistant high-efficiency deep-pumping pump which is composed of a pump barrel upper connecting collar, an upper oil outlet joint, a pump barrel, a plunger, a lower traveling valve I, a lower traveling valve II, a pump barrel lower connecting collar, a standing valve I and a standing valve II. The pump barrel upper connecting collar is connected with the upper end of the pump barrel, the lower end of the pump barrel is connected with the pump barrel lower connecting collar and the lower end of the pump barrel lower connecting collar is connected with the standing valve I and the standing valve II to form a pump barrel assembly. The upper oil outlet joint is connected with the upper end of the plunger, and the lower end of the plunger is connected with the lower traveling valve I and the lower traveling valve II to form a plunger assembly. The outer diameters of the plunger are equal, and the mouth parts of outer circles at both ends of the plunger keep shape. The utility model enhances the pumping efficiency and the reliability of the oil well pump, extends the period of pump inspection, increases the descent depth of the oil well pump in a well and prevents the sand clamping of the oil well pump.
Description
Technical field
The utility model relates to a kind of efficient deep oil well pump of the isometrical strong corrosion resistant of bivalve that the oilfield machinery crude oil extraction is used that is used for, and is a kind of bar oil production equipment that has.
Background technique
At present, conventional tubing pump mainly is made up of a upper travelling valve, plunger, lower travelling valve, pump barrel box cupling, pump barrel, a standing valve.Facts have proved that conventional tubing pump has following deficiency: 1, the wander up and down valve is distributed in the two ends up and down of plunger, because upper traveling valve cage is subjected to structural limitations, its bearing capacity is relatively poor, not only descends well depth to be restricted, and need deepen the implementation of pump extension when oil well and can't realize when adopting deeply; And the valve bonnet phenomenon of rupture often takes place, and influence field produces, caused enormous economic loss.2, because have only a standing valve, in case valve ball appearance seat envelope is not tight, produce leakage, not only reduced the pump efficiency of oil well pump, serious meeting causes the oil well pump inefficacy.3, plunger outer diameter is non-isometrical, contains sand in the crude oil and easily enters annular space between plunger and the pump barrel, causes oil well pump sand card.4, the upper and lower valve bonnet that moves about, part materials such as traveling valve joint are Ordinary Steel, its decay resistance is very poor, is not suitable for containing H
2S, CO
2The corrosivity oil well in use.
Summary of the invention
The purpose of this utility model is exactly a kind of high pump efficiency, high reliability will be provided, have certain sand control ability, have than the efficient deep oil well pump of the isometrical strong corrosion resistant of the bivalve of strong corrosion resistant.
The purpose of this utility model is achieved in that
The efficient deep oil well pump of the isometrical strong corrosion resistant of a kind of bivalve is made up of box cupling (7), standing valve I (8), standing valve II (9) under box cupling on the pump barrel 1, last delivery connection (2), pump barrel (3), plunger (4), lower travelling valve I (5), lower travelling valve II (6), the pump barrel.Box cupling 1 links to each other with pump barrel 3 upper ends on the pump barrel, box cupling 7 under 3 times termination pump barrels of pump barrel, 7 times termination standing valves of box cupling I8, standing valve II9 have formed the pump barrel assembly under the pump barrel, last delivery connection 2 links to each other with plunger 4 upper ends, 4 times termination lower travelling valves of plunger I5, lower travelling valve II6 have formed plunger assembly, plunger 4 external diameters are isometrical, and plunger 4 two ends cylindrical oral areas keep sharp.
After adopting two lower travelling valves and double standing valve structure,, also have another one to ensure, therefore improved the reliability and the pump efficiency of oil well pump greatly, prolonged pump detection period even one of them valve ball seat envelope is not tight.Plunger is isometrical plunger, can prevent that sand grains from entering the gap between plunger and the pump barrel, has avoided original plunger two ends step surface easily to advance the disadvantage of sand, long-pending sand.The utility model is displaced downwardly to the plunger lower end with upper travelling valve, designs a last delivery connection and directly links to each other with plunger, can strengthen going up the bearing capacity of delivery connection greatly, has avoided the often generation of fracture of upper traveling valve cage, has improved the following well depth of oil well pump.The plunger assembly part of existing conventional tubing pump is Ordinary Steel, and is not corrosion-resistant, do not fit into to contain H
2S, CO
2The corrosivity oil well in use.Plunger assembly part of the present utility model adopts 3Cr13 or 1Cr18Ni9Ti resistant material, has strong corrosion resistant, and its comprehensive mechanical performance is also much better than than Ordinary Steel.
Description of drawings
Be described further below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, the efficient deep oil well pump of the isometrical strong corrosion resistant of a kind of bivalve mainly is made up of box cupling 7, standing valve I8, standing valve II9 under box cupling on the pump barrel 1, last delivery connection 2, pump barrel 3, plunger 4, lower travelling valve I5, lower travelling valve II6, the pump barrel.Box cupling 1 links to each other with pump barrel 3 upper ends on the pump barrel, box cupling 7 under 3 times termination pump barrels of pump barrel, and 7 times termination standing valves of box cupling I8, standing valve II9 have formed the pump barrel assembly under the pump barrel; Last delivery connection 2 links to each other with plunger 4 upper ends, and 4 times termination lower travelling valves of plunger I5, lower travelling valve II6 have formed plunger assembly.Because last delivery connection 2 can strengthen wall thickness under the situation that guarantees oil stream runner, strengthen its bearing capacity, compares with existing conventional tubing pump upper traveling valve cage, its bearing capacity has increased by one times, and therefore well depth is darker down.Plunger 4 external diameters are isometrical, can prevent that sand in the crude oil from entering the annular chamber between plunger 4 and the pump barrel 3, avoid the sand card, and plunger 4 two ends keep sharp, can effectively strike off the dirts such as sand that adhere on pump barrel 3 inwalls.After adopting standing valve I8, standing valve II9 double standing valve, even one of them valve ball seat envelope is not tight, also have another one to ensure, avoided the disadvantage that leakage reduces pump efficiency even causes oil well pump to lose efficacy sternly not occurring in single valve situation lower valve ball seat envelope, therefore improve the reliability and the pump efficiency of oil well pump greatly, prolonged pump detection period.The part material of last delivery connection 2, lower travelling valve I5, lower travelling valve II6 adopts 3Cr13 or 1Cr18Ni9Ti resistant material, has strong corrosion resistant, can contain H
2S, CO
2The corrosivity oil well in use, its comprehensive mechanical performance is also much better than than Ordinary Steel, well depth ensures for oil well pump improves down.
Working principle of the present utility model is: during down stroke, plunger is descending under the drive of sucker rod, standing valve I, standing valve II close under the pressure effect of fluid column, and traveling valve I, traveling valve II open, and liquid drains in the oil pipe of plunger assembly top in the pump chamber of plunger assembly below.
During up stroke, plunger is up under the drive of sucker rod, traveling valve I and traveling valve II close, plunger assembly below pump chamber volume increases, pressure descends, standing valve I, standing valve II open under the pump intake pressure effect, and the liquid between oil pipe and the sleeve pipe in the annular chamber enters in the pump chamber of plunger assembly below.
Claims (4)
1, the efficient deep oil well pump of the isometrical strong corrosion resistant of bivalve used of a kind of mechanical oil recovery, form by box cupling (7), standing valve I (8), standing valve II (9) under box cupling on the pump barrel (1), last delivery connection (2), pump barrel (3), plunger (4), lower travelling valve I (5), lower travelling valve II (6), the pump barrel, it is characterized in that: lower travelling valve I (5), lower travelling valve II (6) are positioned at plunger (4) lower end, and plunger (4) upper end internal thread directly is connected with last delivery connection (2) male thread.
2, the efficient deep oil well pump of the isometrical strong corrosion resistant of a kind of bivalve according to claim 1 is characterized in that: there are (9) two standing valves of standing valve I (8), standing valve II box cupling under the pump barrel (7) lower end.
3, the efficient deep oil well pump of the isometrical strong corrosion resistant of a kind of bivalve according to claim 1 is characterized in that: plunger (4) is isometrical plunger, and it is sharp that plunger two ends cylindrical oral area keeps.
4, the efficient deep oil well pump of the isometrical strong corrosion resistant of a kind of bivalve according to claim 1 is characterized in that: going up delivery connection (2), lower travelling valve I (5) valve bonnet, lower travelling valve II (6) valve bonnet and valve joint material is stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520097818 CN2816410Y (en) | 2005-08-26 | 2005-08-26 | Double-valve equal-diameter strong corrosion-resisting efficient deep-pumping pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520097818 CN2816410Y (en) | 2005-08-26 | 2005-08-26 | Double-valve equal-diameter strong corrosion-resisting efficient deep-pumping pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2816410Y true CN2816410Y (en) | 2006-09-13 |
Family
ID=36996219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520097818 Expired - Fee Related CN2816410Y (en) | 2005-08-26 | 2005-08-26 | Double-valve equal-diameter strong corrosion-resisting efficient deep-pumping pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2816410Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562544A (en) * | 2010-12-31 | 2012-07-11 | 中国石油天然气股份有限公司 | High-temperature oil pump |
-
2005
- 2005-08-26 CN CN 200520097818 patent/CN2816410Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562544A (en) * | 2010-12-31 | 2012-07-11 | 中国石油天然气股份有限公司 | High-temperature oil pump |
| CN102562544B (en) * | 2010-12-31 | 2015-09-09 | 中国石油天然气股份有限公司 | A kind of high-temperature oil pump |
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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 |