CN202431258U - Flow string for oil well - Google Patents
Flow string for oil well Download PDFInfo
- Publication number
- CN202431258U CN202431258U CN2012200176700U CN201220017670U CN202431258U CN 202431258 U CN202431258 U CN 202431258U CN 2012200176700 U CN2012200176700 U CN 2012200176700U CN 201220017670 U CN201220017670 U CN 201220017670U CN 202431258 U CN202431258 U CN 202431258U
- Authority
- CN
- China
- Prior art keywords
- sand
- pump barrel
- oil
- plunger
- pump cylinder
- 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
- 239000003129 oil well Substances 0.000 title abstract description 9
- 239000004576 sand Substances 0.000 claims abstract description 44
- 239000013049 sediment Substances 0.000 claims description 18
- 238000011084 recovery Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Images
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- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model relates to an oil extraction instrument of oil wells, in particular to a flow string for an oil well. The technical scheme of the utility model is that the flow string for the oil well comprises a sand setting pipe, a pump cylinder, a plunger, an upper oil outlet valve, a lower oil outlet valve, an oil inlet valve, a two-way joint and a centering guide. The pump cylinder is fixed inside the sand setting pipe through the centering guide. The pump cylinder is internally provided with the plunger. The upper and lower ends of the plunger are respectively provided with the upper oil outlet valve and the lower oil outlet valve. The lower part of the pump cylinder is connected with the two-way joint. The oil inlet valve is arranged at the connection of the pump cylinder and the two-way joint. An upper coupling is arranged in the upper part of the sand setting pipe. A sand baffling ring is arranged in the upper part of the pump cylinder through a pull rod. A central setting pipe is connected with the bottom of the sand setting pipe. The flow string provided by the utility model has the advantages that the flow string for the oil well avoids blocking by sand, burying by sand, is wear-resisting, anti-corrosive, and prolongs the production period of the oil well and the service life of the pump and the like, and improves the production efficiency of the oil well.
Description
Technical field
The utility model relates to the well recovery apparatus, particularly a kind of well recovery tubing string.
Background technology
Receive the influence of geological conditions; The oil field subsurface structure that has is complicated, belongs to the compound oil gas area of multiple oil reservoir type and many structures, multilayer system, many oil properties, and underground sand content is big; Contain a large amount of silt in the crude oil that exploitation is come out; Cause the flow string serious wear, be prone to stop up, reduced the application life of tubing string.
Summary of the invention
The purpose of the utility model is exactly the above-mentioned defective that exists to prior art, and a kind of well recovery tubing string is provided, and is difficult for stopping up, and has improved its application life.
Its technical scheme is: comprise sand sediment pipe, pump barrel, plunger, last delivery valve, following delivery valve, inlet valve, duplex fitting and centralizer; The inner fixedly pump barrel of centralizer that passes through of sand sediment pipe; Pump barrel inside is provided with plunger, and the upper and lower end portion of plunger is provided with delivery valve and following delivery valve respectively, and the bottom of pump barrel connects duplex fitting; The junction of pump barrel and duplex fitting is provided with inlet valve; The top of described sand sediment pipe is provided with box cupling, and the top of pump barrel is provided with sand stop ring through pull bar, and the bottom of sand sediment pipe connects the center sand sediment pipe.
Above-mentioned last box cupling inboard is provided with protruding retaining.
Above-mentioned sand stop ring is a truncated conical shape, and upper and lower bottom surface diameter one end of sand stop ring is greater than the pump barrel diameter, and the other end is less than the pump barrel diameter.
The beneficial effect of the utility model is: have that sand control card, sand control bury, wear-resisting, anticorrosion and the advantages such as application life that prolong oil well production cycle and pump, improved oil well production efficient.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model;
Among the last figure: sand sediment pipe 1, pump barrel 2, plunger 3, last box cupling 4, sand stop ring 5, protruding retaining 6, last delivery valve 7, following delivery valve 8, inlet valve 9, duplex fitting 10, center sand sediment pipe 11, centralizer 12, pull bar 13.
The specific embodiment
In conjunction with accompanying drawing 1, the utility model is done further to describe:
The utility model comprises sand sediment pipe 1, pump barrel 2, plunger 3, last box cupling 4, sand stop ring 5, protruding retaining 6, goes up delivery valve 7, following delivery valve 8, inlet valve 9, duplex fitting 10, center sand sediment pipe 11, centralizer 12 and pull bar 13; The sand sediment pipe 1 inner fixedly pump barrel 2 of centralizer 12 that passes through; Pump barrel 2 inside are provided with plunger 3, and the upper and lower end portion of plunger 3 is provided with delivery valve 7 and following delivery valve 8 respectively, and the bottom of pump barrel 2 connects duplex fitting 10; Pump barrel 2 is provided with inlet valve 9 with the junction of duplex fitting 10; The top of described sand sediment pipe 1 is provided with box cupling 4, and the top of pump barrel 2 is provided with sand stop ring 5 through pull bar 13, and the bottom of sand sediment pipe 1 connects center sand sediment pipe 11.
Wherein, last box cupling 4 inboards are provided with protruding retaining 6; Described sand stop ring 5 is a truncated conical shape, and upper and lower bottom surface diameter one end of sand stop ring 5 is greater than pump barrel 2 diameters, and the other end is less than pump barrel 2 diameters.
During use, when upstroke, pull bar drives sand stop ring and plunger moves upward; Sand stop ring by protruding retaining block can not continue up; Last delivery valve cuts out with following delivery valve, and liquid backs down inlet valve through duplex fitting and gets into the pump barrel bottom in the well, and well liquid is discharged from ground simultaneously; During down stroke, pull bar drives sand stop ring and plunger moves downward, and the sand stop ring seat is encapsulated in the pump barrel oral area; Pathway closure with tubing string and pump barrel inner chamber; Make that sand grains and impurity can not get in the pump barrel in the well liquid, last delivery valve and following delivery valve unlatching, inlet valve cuts out; The pump barrel lower liquid arrives in the oil pipe through plunger, accomplishes a pumping process.
Claims (3)
1. well recovery tubing string; Comprise sand sediment pipe (1), pump barrel (2), plunger (3), last delivery valve (7), following delivery valve (8), inlet valve (9), duplex fitting (10) and centralizer (12); The inner fixedly pump barrel (2) of centralizer (12) that passes through of sand sediment pipe (1); Pump barrel (2) inside is provided with plunger (3), and the upper and lower end portion of plunger (3) is provided with delivery valve (7) and following delivery valve (8) respectively, and the bottom of pump barrel (2) connects duplex fitting (10); Pump barrel (2) is provided with inlet valve (9) with the junction of duplex fitting (10); It is characterized in that: the top of described sand sediment pipe (1) is provided with box cupling (4), and the top of pump barrel (2) is provided with sand stop ring (5) through pull bar (13), and the bottom of sand sediment pipe (1) connects center sand sediment pipe (11).
2. well recovery tubing string according to claim 1 is characterized in that: described box cupling (4) inboard of going up is provided with protruding retaining (6).
3. well recovery tubing string according to claim 1 is characterized in that: described sand stop ring (5) is a truncated conical shape, and upper and lower bottom surface diameter one end of sand stop ring (5) is greater than pump barrel (2) diameter, and the other end is less than pump barrel (2) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200176700U CN202431258U (en) | 2012-01-16 | 2012-01-16 | Flow string for oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200176700U CN202431258U (en) | 2012-01-16 | 2012-01-16 | Flow string for oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202431258U true CN202431258U (en) | 2012-09-12 |
Family
ID=46780718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200176700U Expired - Fee Related CN202431258U (en) | 2012-01-16 | 2012-01-16 | Flow string for oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202431258U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550402A (en) * | 2020-05-25 | 2020-08-18 | 无锡世联丰禾石化装备科技有限公司 | Sand setting bimetal screw pump |
| CN112943173A (en) * | 2021-04-09 | 2021-06-11 | 盘锦恒泰利石油机械有限公司 | Injection-production integrated sand-proof antiscale oil-well pump |
-
2012
- 2012-01-16 CN CN2012200176700U patent/CN202431258U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550402A (en) * | 2020-05-25 | 2020-08-18 | 无锡世联丰禾石化装备科技有限公司 | Sand setting bimetal screw pump |
| CN112943173A (en) * | 2021-04-09 | 2021-06-11 | 盘锦恒泰利石油机械有限公司 | Injection-production integrated sand-proof antiscale oil-well pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20130116 |