CN2547903Y - Long-stroke feed back oil-well pump - Google Patents
Long-stroke feed back oil-well pump Download PDFInfo
- Publication number
- CN2547903Y CN2547903Y CN 02228867 CN02228867U CN2547903Y CN 2547903 Y CN2547903 Y CN 2547903Y CN 02228867 CN02228867 CN 02228867 CN 02228867 U CN02228867 U CN 02228867U CN 2547903 Y CN2547903 Y CN 2547903Y
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- China
- Prior art keywords
- pump
- pump barrel
- long
- barrel
- well
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- Expired - Lifetime
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- Reciprocating Pumps (AREA)
Abstract
The utility model discloses a long-stroke feed back oil-well pump which is applicable to a tubular oil well, comprising an upper pump and a lower pump barrel which consist of a pump barrel and an upper plunger piston, a lower pump consisting of a lower plunger piston, wherein, the upper pump adopts a conventional long pump barrel and short plunger piston structure; the lower pump adopts a short pump barrel and long plunger piston structure, which effectively shortens the overall length of the pump; the utility model has the advantages of low manufacturing cost, convenient transportation, installation and operation, and application to thick oil well.
Description
Technical field
The utility model relates to oil exploration equipment, especially a kind of long stroke feedback type oil-well pump that is suitable for the thick oil well use.
Background technique
The oil well of domestic oil field fluid thickness is more, the common oil well pump of single pump barrel, single plunger is because pump footpath stroke is short, suction force is limited, can't satisfy job requirements, thereby the feedback type oil-well pump of double pump tube, double-plunger is adopted in the thick oil well operation mostly, it is long pump barrel that present existing feedback type oil-well pump all adopts upper and lower pump barrel, upper and lower plunger is the structure of short column plug, the pump total length is longer, exist and to expend that raw material are many, manufacture cost is high, whole Transporting, installation and following well operations be the drawback of inconvenience extremely.
Summary of the invention
The purpose of this utility model just provides a kind of low cost of manufacture, help whole Transporting and following well operations, be fit to the long stroke feedback type oil-well pump of thick oil well operation.
The purpose of this utility model is achieved in that a kind of long stroke feedback type oil-well pump, the following pump that comprises last pump, following pump barrel 3 and lower plunger 4 compositions that pump barrel 1 and upper plug 2 are formed, pump barrel upper connection 8 is installed in last pump barrel 1 upper end, pump barrel lower contact 9 is installed in following pump barrel 3 lower ends, outlet valve 5 is installed in upper plug 2 lower ends, lower plunger 4 upper ends are installed into fuel tap 6, last pump barrel 1 is connected by middle jointing 7 with following pump barrel 3, last pump barrel 1 adopts long pump barrel, upper plug 2 adopts the short column plug, following pump barrel 3 adopts short pump barrel, and lower plunger 4 adopts long-plunger.
Because the utility model is owing to adopt double pump tube, double-plunger structure, last pump is made up of long pump barrel, the short column plug of routine, and pump is different from the long pump barrel of existing conventional, short column plug structure down, change by short pump barrel, long-plunger and form, make under the identical situation of stroke, the length overall of the pump that upper and lower pump barrel is formed shortens, reduced manufacture cost, transportation, installation and following well operations are all very convenient, also can satisfy not mobile tubing string simultaneously and inject steam to reduce the job requirements of viscosity of crude in well.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1, go up pump barrel, 2, upper plug, 3, pump barrel down, 4, lower plunger, 5, outlet valve, 6, oiling valve, 7, middle jointing, 8, the pump barrel upper connection, 9, the pump barrel lower contact.
Embodiment
Long stroke feedback type oil-well pump shown in Figure 1, the following pump that comprises last pump, following pump barrel 3 and lower plunger 4 compositions that pump barrel 1 and upper plug 2 are formed, pump barrel upper connection 8 is installed in last pump barrel 1 upper end, and pump barrel lower contact 9 is installed in following pump barrel 3 lower ends, and outlet valve 5 is installed in upper plug 2 lower ends, lower plunger 4 upper ends are installed into fuel tap 6, last pump barrel 1 is connected by middle jointing 7 with following pump barrel 3, and last pump barrel 1 adopts long pump barrel, and upper plug 2 adopts the short column plug, following pump barrel 3 adopts short pump barrel, and lower plunger 4 adopts long-plunger.
During upstroke, outlet valve 5 cuts out, well liquid backs down oiling valve 6 through lower plunger 4 center holes and enters lower plunger 4, goes up pump barrel 1 and upper plug 4 formed annular cavitys, during down stroke, annular cavity reduces gradually, and well liquid is opened outlet valve 5 and entered in upper plug 4 center cavities and the oil pipe, along with the continuous to-and-fro motion of plunger, the utility model continues to finish aspiration procedure, and well liquid is pumped to ground and compiles into gathering line; In the plunger down stroke process, oiling valve 6 is in closed condition all the time, because end pressure is different with following end pressure on the lower plunger 4, it is poor to produce head of liquid, makes lower plunger 4 produce downward axial force, and it is descending to promote plunger, to overcome the viscous resistance that viscosity of crude is produced, when oil well allows steam injection, can will carry on the sucker rod, upper plug 2 and lower plunger 4 are proposed to go up pump barrel 1 and following pump barrel 3, at this moment, oil pipe communicates with liquid in the well, can inject steam in well, to reduce viscosity of crude, after annotating the vapour end, to go up, lower plunger is put into, following pump barrel is transferred sucker rod, will propose normal operation behind the over-stroke on the sucker rod.
Claims (1)
1, a kind of long stroke feedback type oil-well pump, comprise the last pump that pump barrel (1) and upper plug (2) are formed, the following pump that following pump barrel (3) and lower plunger (4) are formed, pump barrel upper connection (8) is installed in last pump barrel (1) upper end, pump barrel lower contact (9) is installed in following pump barrel (3) lower end, outlet valve (5) is installed in upper plug (2) lower end, lower plunger (4) upper end is installed into fuel tap (6), last pump barrel (1) is connected by middle jointing (7) with following pump barrel (3), last pump barrel (1) adopts long pump barrel, upper plug (2) adopts the short column plug, it is characterized in that: following pump barrel (3) adopts short pump barrel, and lower plunger (4) adopts long-plunger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02228867 CN2547903Y (en) | 2002-03-29 | 2002-03-29 | Long-stroke feed back oil-well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02228867 CN2547903Y (en) | 2002-03-29 | 2002-03-29 | Long-stroke feed back oil-well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2547903Y true CN2547903Y (en) | 2003-04-30 |
Family
ID=33705317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02228867 Expired - Lifetime CN2547903Y (en) | 2002-03-29 | 2002-03-29 | Long-stroke feed back oil-well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2547903Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100376794C (en) * | 2004-08-05 | 2008-03-26 | 陈世家 | Strong anti-thickening anti-sand hydraulic feedback oil pump with long plug ring seal and oil inlet sand deposition path |
| CN103244395A (en) * | 2012-02-09 | 2013-08-14 | 中国石油集团渤海石油装备制造有限公司 | Tertiary-recovery oil well pump |
-
2002
- 2002-03-29 CN CN 02228867 patent/CN2547903Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100376794C (en) * | 2004-08-05 | 2008-03-26 | 陈世家 | Strong anti-thickening anti-sand hydraulic feedback oil pump with long plug ring seal and oil inlet sand deposition path |
| CN103244395A (en) * | 2012-02-09 | 2013-08-14 | 中国石油集团渤海石油装备制造有限公司 | Tertiary-recovery oil well pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120329 Granted publication date: 20030430 |