CN205778761U - A kind of swab - Google Patents
A kind of swab Download PDFInfo
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- CN205778761U CN205778761U CN201620509999.7U CN201620509999U CN205778761U CN 205778761 U CN205778761 U CN 205778761U CN 201620509999 U CN201620509999 U CN 201620509999U CN 205778761 U CN205778761 U CN 205778761U
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- swab
- leather cup
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Abstract
The utility model discloses a kind of swab, including core pipe and self-styled leather cup, described self-styled leather cup is socketed in outside described core pipe；Self-styled leather cup is the cup-shaped of opening upwards, and rim of a cup expands outwardly, and the outer rim of described rim of a cup and the inwall of sleeve pipe leave assemblage gap；It is provided with gap between inwall and the outer wall of core pipe of self-styled leather cup；Core tube wall bottom is provided with to be blocked bottom self-styled leather cup and the step surface in gap between core pipe.This utility model swab is by being the cup-shaped of opening upwards by self-styled leather cup, and rim of a cup expands outwardly, and the outer rim of described rim of a cup and the inwall of sleeve pipe leave assemblage gap；Make the swab can be smoothly in lower going-into-well.On when carrying, rim of a cup is expanded, and is in close contact with core pipe, it is achieved self-styled bottom leather cup.Under product, well resistance is low, and self-styled is good, and involving swab efficiency is high.
Description
Technical field
This utility model relates to oil extraction in oil field technical field, particularly to the swab in a kind of involving swab kit.
Background technology
In involving swab technique, the swab used is single packing element structure, and its external diameter is designed to bigger, beneficially on carry steel wire rope during, the startup involving swab of swab；Its maximum is disadvantageous in that, external diameter causes greatly swab resistance encountered in the process of going into the well big, have impact on the use in oil salvage operation in casing deformation well.
Utility model content
It is unique that the purpose of this utility model is to provide a kind of novel structure, easy to use, and can effectively reduce the swab of lower well resistance；Concrete technical scheme is:
A kind of swab, including core pipe and self-styled leather cup, described self-styled leather cup is socketed in outside described core pipe；Self-styled leather cup is the cup-shaped of opening upwards, and rim of a cup expands outwardly, and the outer rim of described rim of a cup and the inwall of sleeve pipe leave assemblage gap；It is provided with gap between inwall and the outer wall of core pipe of self-styled leather cup；Core tube wall bottom is provided with to be blocked bottom self-styled leather cup and the step surface in gap between core pipe.
Further, described gap 5mm.
Further, described core pipe bottom is provided with relief valve.
Further, described relief valve is made up of the regulation screw thread of spring, cone-shaped valve head, adjusting screw rod and core pipe bottom.
Further, described step surface is circular step face.
Further, described core pipe side wall upper part is provided with one or more through holes.
Further, the bottom of described self-styled leather cup is provided with the packing element cover for seat that hard material is made.
Further, described hard material is engineering plastics or metal material.
Further, the inwall of described self-styled leather cup is provided with groove.
Further, described self-styled leather cup is additionally provided with spacer ring, and the self-styled expansion on leather cup top is connected by described spacer ring with the supporting part of bottom.
Further, the inwall of described supporting part is provided with groove.
This utility model swab is by being the cup-shaped of opening upwards by self-styled leather cup, and rim of a cup expands outwardly, and the outer rim of described rim of a cup and the inwall of sleeve pipe leave assemblage gap；Make the swab can be smoothly in lower going-into-well.On when carrying, rim of a cup is expanded, and is in close contact with core pipe, it is achieved self-styled bottom leather cup.Under product, well resistance is low, and self-styled is good, and involving swab efficiency is high.
Accompanying drawing explanation
Fig. 1 is this utility model swab structural representation.
In figure: 1, core pipe；1.1, side opening；2, self-styled leather cup；3, spacer ring；4, supporting part；4.1, groove；5, glue tube base；6, cone-shaped valve head；7, spring；8, adjusting screw rod.
Detailed description of the invention
Below with embodiment, this utility model is more fully illustrated.This utility model can be presented as multiple multi-form, is not construed as the exemplary embodiment being confined to describe here.
For ease of explanation, here can use such as " on ", the space relative terms such as D score " left " " right ", for shown in explanatory diagram a element or feature relative to another element or the relation of feature.It should be understood that in addition to the orientation shown in figure, spatial terminology is intended to include device different azimuth in use or operation.Such as, if the device in figure is squeezed, be stated as being positioned at the element of other elements or feature D score will be located into other elements or feature " on ".Therefore, exemplary term D score can comprise upper and lower both orientation.Device can otherwise position (90-degree rotation or be positioned at other orientation), relatively illustrates used herein of space correspondingly to explain.
As it is shown in figure 1, the swab in the present embodiment, including core pipe 1 and self-styled leather cup 2, self-styled leather cup 2 is socketed in outside core pipe 1；Self-styled leather cup 2 is the cup-shaped of opening upwards, and rim of a cup expands outwardly, and the outer rim of rim of a cup and the inwall of sleeve pipe leave assemblage gap；It is provided with gap between inwall and the outer wall of core pipe 1 of self-styled leather cup 2；In order to improve the flow velocity that fluid enters, this gap can be set to 5mm.Core tube wall bottom is provided with to be blocked bottom self-styled leather cup and the step surface in gap between core pipe；Being preferably step surface is circular step face.The conical surface of guiding can be set on the top of step surface, it is to avoid self-styled leather cup is eccentric, affects sealing effectiveness.
Owing to self-styled leather cup 2 is generally made up of flexible materials such as rubber, in order to avoid producing overload during involving swab, affect the life-span of self-styled leather cup, core pipe bottom is provided with relief valve.
This relief valve can be the relief valve joining choosing as required, it is also possible to as it is shown in figure 1, be made up of the regulation screw thread of spring 7, cone-shaped valve head 6, adjusting screw rod 8 and core pipe bottom.
Core pipe inner sidewall upper portion is provided with 1 through hole side opening 1.1, it is also possible to multiple through hole side opening 1.1 is set.Fluid enters in core pipe 1 from side opening 1.1, promotes excessive velocities, and when producing overload, fluid is released by relief valve.
The bottom of the self-styled leather cup 2 in order to avoid making because of flexible material is relatively big with the guiding vertebral body abrasion that metal material is made, and affects sealing effectiveness；The bottom of self-styled leather cup 2 is provided with the packing element cover for seat that hard material is made.Hard material can select engineering plastics or metal material.
Inwall at self-styled leather cup 2 is provided with groove 4.1.
When being embodied as, it is also possible to be provided with spacer ring 3, self-styled leather cup 2 is divided into enlarged portion, spacer ring 3 and supporting part 4；By spacer ring 3, the enlarged portion on self-styled leather cup top is connected with the supporting part 4 of bottom.Wherein, enlarged portion uses softer material, it is easy to deformation, expands good sealing effect；Supporting part 4 uses the hardest material, it is to avoid deforming excessive, bearing capacity is too small, affects involving swab efficiency.At this moment, groove 4.1 should be arranged on the inwall of supporting part 4.
During work, being connected with steel wire rope by rope socket by the swab in the present embodiment, bottom connects weighted lever.During going into the well, run into well liquid, self-styled leather cup 2 is up under the pressure of fluid, bottom with ring-shaped step emaciated face from, flow-guiding channel is exposed between its internal diameter and core pipe top external diameter, well liquid flows to swab top by this passage, and owing to self-styled leather cup 2 rim of a cup on top is easy to contract, swab can sink smoothly.
After arriving down down-hole certain position, above carrying steel wire rope, self-styled leather cup 2, glue tube base 5 are descending, after contacting with annular table terrace, seal up flow-guiding channel；Owing to rim of a cup external diameter is the least with casing inner diameter gap, rim of a cup is expanded by after resistance, the axial compressive force of generation, the internal pressure also produced by outer top fluid column of the most self-styled leather cup 2, makes self-styled leather cup 2 more preferable with ring-shaped step face seal effect.Up along with steel wire rope, well liquid is pumped into during well head involving swab pipe lets out.
Above-mentioned example be only intended to illustrate this utility model, in addition, the most multiple different embodiment, and these embodiments be all those skilled in the art after comprehension this utility model thought it is also envisioned that therefore, will not enumerate at this.
Claims (10)
1. a swab, it is characterised in that include that core pipe (1) and self-styled leather cup (2), described self-styled leather cup (2) are socketed in described core pipe (1) outward；Self-styled leather cup (2) is the cup-shaped of opening upwards, and rim of a cup expands outwardly, and the outer rim of described rim of a cup and the inwall of sleeve pipe leave fit clearance；Gap between inwall and the outer wall of core pipe (1) of self-styled leather cup (2)；Core pipe (1) outer wall bottom is provided with blocks the step surface in gap between self-styled leather cup (2) bottom and core pipe (1).
2. swab as claimed in claim 1, it is characterised in that described gap 5mm.
3. swab as claimed in claim 1, it is characterised in that described core pipe (1) bottom is provided with relief valve.
4. swab as claimed in claim 3, it is characterised in that described relief valve is made up of the regulation screw thread of spring (7), cone-shaped valve head (6), adjusting screw rod (8) and core pipe (1) bottom.
5. swab as claimed in claim 1, it is characterised in that described step surface is circular step face.
6. swab as claimed in claim 1, it is characterised in that described core pipe (1) side wall upper part is provided with one or more through holes.
7. swab as claimed in claim 1, it is characterised in that the bottom of described self-styled leather cup (2) is provided with glue tube base (5) set that hard material is made.
8. swab as claimed in claim 7, it is characterised in that described hard material is engineering plastics or metal material.
9. swab as claimed in claim 1, it is characterised in that the inwall of described self-styled leather cup (2) is provided with groove (4.1).
10. swab as claimed in claim 1, it is characterized in that, described self-styled leather cup (2) is additionally provided with spacer ring (3), and the expansion on self-styled leather cup (2) top is connected by described spacer ring (3) with the supporting part (4) of bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620509999.7U CN205778761U (en) | 2016-05-31 | 2016-05-31 | A kind of swab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620509999.7U CN205778761U (en) | 2016-05-31 | 2016-05-31 | A kind of swab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205778761U true CN205778761U (en) | 2016-12-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620509999.7U Active CN205778761U (en) | 2016-05-31 | 2016-05-31 | A kind of swab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205778761U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837233A (en) * | 2017-01-06 | 2017-06-13 | 淮阴工学院 | Oil mine pore sealing device and its involving swab encapsulating method |
| CN107178341A (en) * | 2017-06-16 | 2017-09-19 | 盐城市东荣石油机械有限公司 | A kind of casing oil extractor tool |
| CN109296341A (en) * | 2018-12-10 | 2019-02-01 | 赵峰 | A kind of failure oil well oil conduit inside crude oil fishing device |
-
2016
- 2016-05-31 CN CN201620509999.7U patent/CN205778761U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837233A (en) * | 2017-01-06 | 2017-06-13 | 淮阴工学院 | Oil mine pore sealing device and its involving swab encapsulating method |
| CN106837233B (en) * | 2017-01-06 | 2019-03-26 | 淮阴工学院 | Oil mine pore sealing device and its involving swab encapsulating method |
| CN107178341A (en) * | 2017-06-16 | 2017-09-19 | 盐城市东荣石油机械有限公司 | A kind of casing oil extractor tool |
| CN107178341B (en) * | 2017-06-16 | 2019-04-09 | 盐城市东荣石油机械有限公司 | A kind of casing oil extractor tool |
| 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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| GR01 | Patent grant |