CN201137465Y - Low yield well pumping unit - Google Patents
Low yield well pumping unit Download PDFInfo
- Publication number
- CN201137465Y CN201137465Y CNU2008200001606U CN200820000160U CN201137465Y CN 201137465 Y CN201137465 Y CN 201137465Y CN U2008200001606 U CNU2008200001606 U CN U2008200001606U CN 200820000160 U CN200820000160 U CN 200820000160U CN 201137465 Y CN201137465 Y CN 201137465Y
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- CN
- China
- Prior art keywords
- oil pipe
- polished rod
- swab
- wire rope
- 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
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Abstract
A stripper well pumping well device mainly resolves the problems of prior art such as high operation cost, high fluctuation of production pressure difference and no seal on the well port. The utility model is characterized in that the lower end of a steel wire (1) is connected with a seal polished rod (3) via a steel wire quick joint (2), the middle of the seal polished rod (3) is provided with an annular slot, the lower end of the seal polished rod is connected with an oil pipe swab (4) whose middle is fixed with a rubber cylinder (5) fit with an oil pipe, the lower end of the oil pipe swab (4) is connected with a weighted rod (6). The stripper well pumping well device has low operation cost, low fluctuation of production pressure difference and seal state of a well port.
Description
Technical field:
The utility model relates to used pumping pipe string in the oil recovery field, oil field, especially stripper well oil rig.
Background technology:
Along with Oilfield developing, the minimizing of the underground amount of adopting, the oil field major part all is the stripper well of low yield, low-permeability oil deposit.At present, these stripper wells adopt conventional fixed oil pumper to implement intermittent recovery, exist the high problem of running cost.Adopt the bailing oil in case mode, the producing pressure differential fluctuation is big, makes the reservoir sensitiveness injury that is under pressure, because the bailing oil in case wellhead assembly has relief hole, makes well head belong to non-air-tight state simultaneously, and the stratum energy loss is big.Be unfavorable for applying.
The utility model content:
In order to solve existing stripper well oil rig running cost height, the producing pressure differential fluctuation reaches the problem that well head belongs to non-air-tight state greatly, the utility model provides a kind of stripper well oil rig, it is low that this stripper well oil rig has oil rig running cost, and the little and well head of producing pressure differential fluctuation belongs to the characteristics of air-tight state.
The technical solution of the utility model is: this stripper well oil rig comprises wire rope, the wire rope lower end links to each other with the sealing polished rod by wire rope snap joint, there is annular groove at sealing polished rod middle part, sealing polished rod lower end links to each other with the oil pipe swab, oil pipe swab middle part is fixed with the packing element that matches with oil pipe, and oil pipe swab lower end links to each other with weighted lever.
Sealing polished rod in the such scheme, oil pipe swab and weighted lever upper end have connecting rod respectively, the connecting rod upper end is spherical, the stage straight hole is arranged respectively at wire rope snap joint, sealing polished rod and oil pipe swab bottom, straight hole axially has the gap that matches with connecting rod, and connecting rod is connected straight hole by gap.
The utlity model has following beneficial effect: this stripper well oil rig is owing to take such scheme; reduced oil rig running cost; reduced the producing pressure differential fluctuation; protected reservoir pressure; simultaneously because oil rig seals; make well head be in air-tight state, reduced the loss of stratum energy.Improved oil recovery efficiency, helped applying.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
1-wire rope among the figure, the snap joint of 2-wire rope, 3-seals polished rod, 4-oil pipe swab, 5-packing element, 6-weighted lever, 7-connecting rod, 8-straight hole.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, this stripper well oil rig comprises wire rope 1, wire rope 1 lower end links to each other with sealing polished rod 3 by wire rope snap joint 2, there is annular groove at sealing polished rod 3 middle parts, sealing polished rod 3 lower ends link to each other with oil pipe swab 4, oil pipe swab 4 middle parts are fixed with the packing element 5 that matches with oil pipe, and oil pipe swab 4 lower ends link to each other with weighted lever 6.Sealing polished rod 3, oil pipe swab 4 and weighted lever 6 upper ends have connecting rod 7 respectively, connecting rod 7 upper ends are spherical, stage straight hole 8 is arranged respectively at wire rope snap joint 2, sealing polished rod 3 and oil pipe swab 4 bottoms, straight hole 8 axially has the gap that matches with connecting rod 7, and connecting rod 7 is connected straight hole 8 by gap.
During actual the use, when wire rope 1 was descending, oil pipe swab 4 was descending under the drive of weighted lever 6, and liquid enters oil pipe swab 4 tops in the oil pipe, requires the degree of depth when being lowered into, and wire rope 1 is up, and the liquid that drives oil pipe swab 4 tops enters petroleum pipeline by well head.Swabbing operation is finished when needing dismounting wire rope 1, carry oil pipe swab 4 in the continuation, when entering oil pipe, oil pipe swab 4 packing elements 5 increase in the chamber, because oil pipe swab 4 packing elements 5 external diameters increase the chamber internal diameter less than oil pipe, thereby make it and oil pipe chamber internal diameter between form the circular passage, oil pipe swab 4 packing elements 5 above fluid will flow back in the well through this circular passage, and the fluid in the petroleum pipeline flows back in the well through production wellhead and this circular passage simultaneously.After the sealing polished rod 3 for the treatment of oil pipe swab 4 tops enters preventer, close preventer, this moment the wire rope 1 sealed packing box of dismantling, gas can not spray in the well, polished rod 3 to be sealed trips out certain distance, on the annular groove at sealing polished rod 3 middle parts, insert the style of the shoe lock dog, this oil rig is suspended on the preventer, the wire rope snap joint 2 of can dismantling this moment.By adopting the cutting ferrule connected mode of connecting rod 7 and straight hole 8, make convenient disassembly, improved operating efficiency.
Claims (2)
1, a kind of stripper well oil rig, comprise wire rope (1), it is characterized in that: wire rope (1) lower end links to each other with sealing polished rod (3) by wire rope snap joint (2), there is annular groove at sealing polished rod (3) middle part, sealing polished rod (3) lower end links to each other with oil pipe swab (4), oil pipe swab (4) middle part is fixed with the packing element (5) that matches with oil pipe, and oil pipe swab (4) lower end links to each other with weighted lever (6).
2, stripper well oil rig according to claim 1, it is characterized in that: sealing polished rod (3), oil pipe swab (4) and weighted lever (6) upper end have connecting rod (7) respectively, connecting rod (7) upper end is spherical, stage straight hole (8) is arranged respectively at wire rope snap joint (2), sealing polished rod (3) and oil pipe swab (4) bottom, straight hole (8) axially has the gap that matches with connecting rod (7), and connecting rod (7) is connected straight hole (8) by gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200001606U CN201137465Y (en) | 2008-01-04 | 2008-01-04 | Low yield well pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200001606U CN201137465Y (en) | 2008-01-04 | 2008-01-04 | Low yield well pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201137465Y true CN201137465Y (en) | 2008-10-22 |
Family
ID=40038151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200001606U Expired - Fee Related CN201137465Y (en) | 2008-01-04 | 2008-01-04 | Low yield well pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201137465Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536136A (en) * | 2011-11-22 | 2012-07-04 | 天津机辆轨道交通装备有限责任公司 | Steel wire fixing device of intelligent bailing type oil pumping unit |
| CN109296341A (en) * | 2018-12-10 | 2019-02-01 | 赵峰 | A kind of failure oil well oil conduit inside crude oil fishing device |
-
2008
- 2008-01-04 CN CNU2008200001606U patent/CN201137465Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536136A (en) * | 2011-11-22 | 2012-07-04 | 天津机辆轨道交通装备有限责任公司 | Steel wire fixing device of intelligent bailing type oil pumping unit |
| CN109296341A (en) * | 2018-12-10 | 2019-02-01 | 赵峰 | A kind of failure oil well oil conduit inside crude oil fishing device |
| CN109296341B (en) * | 2018-12-10 | 2023-09-15 | 赵峰 | Crude oil salvaging device in oil pipe of fault oil well |
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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: 20081022 Termination date: 20170104 |