CN116025550A - Suspension type flexible pump barrel plunger pump - Google Patents
Suspension type flexible pump barrel plunger pump Download PDFInfo
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- CN116025550A CN116025550A CN202111257069.9A CN202111257069A CN116025550A CN 116025550 A CN116025550 A CN 116025550A CN 202111257069 A CN202111257069 A CN 202111257069A CN 116025550 A CN116025550 A CN 116025550A
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- flexible pump
- pump cylinder
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- plunger
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Abstract
The invention relates to a suspension type flexible pump cylinder plunger pump. The flexible pump cylinder plunger pump mainly solves the problems that the flexible pump cylinder in the existing flexible pump cylinder plunger pump is poor in stress condition and the scaling speed of the plunger pump is high. The method is characterized in that: the upper end of the flexible pump cylinder (3) is connected with an upper joint (1), the lower end of the flexible pump cylinder is connected with a bridge type channel joint (7), the outer parts of the upper joint (1) and the bridge type channel joint (7) are connected with an outer tube (2), and an annular cavity is formed between the outer tube (2) and the flexible pump cylinder (3); the lower end of the bridge type passage joint (7) is connected with a scale-sinking tail pipe (10). The suspended flexible pump cylinder plunger pump can improve the stress condition of the flexible pump cylinder, delay the scaling speed of the plunger pump and reduce the descending resistance of the plunger.
Description
Technical Field
The invention relates to the technical field of oil extraction engineering, in particular to a suspension type flexible pump cylinder plunger pump.
Background
In the field of oil extraction in oil fields, polymer flooding and ternary composite flooding oil displacement technologies are widely popularized and applied in large scale as important technologies for improving oil recovery efficiency in oil fields, a conventional plunger pump gradually exposes some inadaptability in the application process, polymer flooding well fluid has high viscosity, plunger downstroke resistance is high, and a sucker rod is easy to bend and wear; the ternary complex oil displacement well has serious scale, scale blocks in well liquid are easy to generate between a plunger and a pump barrel, so that an oil pump is blocked, and the oil well cannot be produced normally. In order to reduce the descending resistance of the plunger of the polymer flooding well and prevent the oil pump of the ternary composite flooding well from being blocked, a soft sealing flexible pump cylinder plunger pump (patent application number: 201810833569.4) has been applied for, and the problems of the invention are as follows: firstly, the flexible pump barrel is subjected to alternating load, and the stress condition is poor; and secondly, the ternary composite oil displacement well has serious scaling, the plunger pump lacks a scale sinking space, and the scaling speed of the plunger pump is high.
Disclosure of Invention
In order to overcome the defects of poor stress condition of a flexible pump barrel and high scaling speed of a plunger pump in the conventional flexible pump barrel plunger pump, the invention provides a suspension type flexible pump barrel plunger pump.
The technical scheme of the invention is as follows: the suspended flexible pump cylinder plunger pump comprises a flexible pump cylinder, wherein a flexible plunger is arranged in the flexible pump cylinder, the upper end of the flexible pump cylinder is connected with an upper joint, the lower end of the flexible pump cylinder is connected with a bridge type channel joint, the outer parts of the upper joint and the bridge type channel joint are connected with an outer pipe, and an annular cavity is formed between the outer pipe and the flexible pump cylinder; the lower end of the bridge type passage joint is connected with a scale-sinking tail pipe.
The lower end of the scale-sinking tail pipe is connected with a dead plug.
The bridge type channel connector is provided with a plurality of longitudinal liquid passing holes, the upper ends of the liquid passing holes are communicated with the annular cavity, and the lower ends of the liquid passing holes are communicated with the scale deposition tail pipe.
The lower part of the bridge type channel joint is provided with a fixed valve cover, and the fixed valve cover is provided with a fixed valve ball.
The side wall of the upper end of the outer tube is provided with a plurality of liquid inlet holes.
The bottom of the soft plunger is connected with a traveling valve cover, and a traveling valve ball is arranged on the upper part of the traveling valve cover.
And a plurality of elastic sealing rings are arranged on the outer wall of the soft plunger.
The invention has the following beneficial effects: 1. the upper end and the top connection of flexible pump barrel are connected, and the lower extreme and the bridge type passageway of flexible pump barrel connect to be connected, and bridge type passageway connects to be connected with the lower extreme of outer tube, and the liquid column load that like this is used in fixed valve bonnet and fixed valve ball directly acts on the outer tube, and flexible pump barrel does not bear liquid column load effort, has thoroughly improved flexible pump barrel atress situation.
2. An annular cavity is formed among the upper joint, the outer pipe and the flexible pump barrel, scale sheets in well liquid entering the annular cavity pass through a plurality of liquid passing holes on the bridge type channel joint and are deposited into a lower scale deposition tail pipe, separated liquid enters the plunger pump through a fixed valve cover and is lifted to the ground, the scaling speed of the plunger pump is delayed, and the pump blocking probability of the plunger pump is reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a cross-sectional view taken along line A-A of fig. 1.
In the figure, the device comprises a 1-upper joint, a 2-outer tube, a 3-flexible pump cylinder, a 4-soft plunger, a 5-traveling valve cover, a 6-traveling valve ball, a 7-bridge type channel joint, an 8-fixed valve cover, a 9-fixed valve ball, a 10-scale sinking tail tube, a 11-dead plug, a 12-liquid inlet hole and a 13-liquid passing hole.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the utility model provides a suspension type flexible pump cylinder plunger pump, is shown by fig. 1, fig. 2, including flexible pump cylinder 3, be equipped with soft plunger 4 in the flexible pump cylinder 3, be equipped with a plurality of elastic sealing ring on the soft plunger 4 outer wall, there is the valve bonnet 5 that moves about through threaded connection in soft plunger 4 bottom, moves about valve bonnet 5 upper portion and is equipped with the valve ball 6 that moves about. The upper end of the flexible pump cylinder 3 is connected with an upper joint 1 through external threads, the lower end of the upper joint is connected with a bridge type channel joint 7, the lower end of the upper joint 1 is connected with an outer tube 2 through external threads, the outer part of the bridge type channel joint 7 is connected with the lower end of the outer tube 2 through external threads, and therefore an annular cavity is formed between the outer tube 2 and the flexible pump cylinder 3. The side wall of the upper end of the outer tube 2 is provided with a plurality of liquid inlet holes 12, and the liquid inlet holes 12 are communicated with the annular cavity. The inner thread of the lower end of the bridge type channel joint 7 is connected with a fixed valve cover 8, and a fixed valve ball 9 is arranged on the fixed valve cover 8. The lower end of the bridge type passage joint 7 is connected with a scale deposition tail pipe 10 in a threaded manner, and the lower end of the scale deposition tail pipe 10 is connected with a dead plug 11. The bridge type channel joint 7 is provided with a plurality of longitudinal liquid passing holes 13, the upper ends of the liquid passing holes 13 are communicated with the annular cavity, and the lower ends of the liquid passing holes are communicated with the scale deposition tail pipe 10.
When the pipe column is run in site operation, the upper joint 1 is connected to the lower end of the first oil pipe, and then all the oil pipe columns are normally run in. After the oil pumping motor-pumped well is started, well liquid from the stratum enters into the annular cavity of the outer tube 2 and the flexible pump barrel 3 through the liquid inlet 12 at the upper end of the outer tube 2, then the well liquid enters into the interior of the scale precipitation tail tube 10 through the liquid passing hole 13 on the bridge type channel joint 7, a large number of scale flakes in the well liquid can generate precipitation in the interior of the scale precipitation tail tube 10 due to high density, and the separated well liquid enters into the plunger pump through the fixed valve cover 8 and is lifted to the ground, so that the scaling speed of the plunger pump is delayed, the pump blocking probability of the plunger pump is reduced, and the normal production of an oil well is ensured.
Claims (7)
1. The utility model provides a flexible pump barrel plunger pump of suspension type, includes flexible pump barrel (3), is equipped with soft plunger (4), its characterized in that in flexible pump barrel (3): the upper end of the flexible pump cylinder (3) is connected with an upper joint (1), the lower end of the flexible pump cylinder is connected with a bridge type channel joint (7), the outer parts of the upper joint (1) and the bridge type channel joint (7) are connected with an outer tube (2), and an annular cavity is formed between the outer tube (2) and the flexible pump cylinder (3); the lower end of the bridge type passage joint (7) is connected with a scale-sinking tail pipe (10).
2. The suspended flexible pump cylinder plunger pump of claim 1, wherein: the lower end of the scale-sinking tail pipe (10) is connected with a dead plug (11).
3. The suspended flexible pump cylinder plunger pump of claim 2, wherein: the bridge type passage joint (7) is provided with a plurality of longitudinal liquid passing holes (13), the upper ends of the liquid passing holes (13) are communicated with the annular cavity, and the lower ends of the liquid passing holes are communicated with the scale-sinking tail pipe (10).
4. A suspended flexible pump cylinder plunger pump as set forth in claim 3, wherein: the lower part of the bridge type channel joint (7) is provided with a fixed valve cover (8), and the fixed valve cover (8) is provided with a fixed valve ball (9).
5. The suspended flexible pump cylinder plunger pump as set forth in claim 4, wherein: the side wall of the upper end of the outer tube (2) is provided with a plurality of liquid inlet holes (12).
6. The suspended flexible pump cylinder plunger pump as set forth in claim 5, wherein: the bottom of the soft plunger (4) is connected with a traveling valve cover (5), and a traveling valve ball (6) is arranged on the upper portion of the traveling valve cover (5).
7. The suspended flexible pump cylinder plunger pump as set forth in claim 6, wherein: the outer wall of the soft plunger (4) is provided with a plurality of elastic sealing rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111257069.9A CN116025550A (en) | 2021-10-27 | 2021-10-27 | Suspension type flexible pump barrel plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111257069.9A CN116025550A (en) | 2021-10-27 | 2021-10-27 | Suspension type flexible pump barrel plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116025550A true CN116025550A (en) | 2023-04-28 |
Family
ID=86069393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111257069.9A Pending CN116025550A (en) | 2021-10-27 | 2021-10-27 | Suspension type flexible pump barrel plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116025550A (en) |
-
2021
- 2021-10-27 CN CN202111257069.9A patent/CN116025550A/en active Pending
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