CN114198068A - Sealed drainage gas production plunger of natural gas well - Google Patents
Sealed drainage gas production plunger of natural gas well Download PDFInfo
- Publication number
- CN114198068A CN114198068A CN202111463528.9A CN202111463528A CN114198068A CN 114198068 A CN114198068 A CN 114198068A CN 202111463528 A CN202111463528 A CN 202111463528A CN 114198068 A CN114198068 A CN 114198068A
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- CN
- China
- Prior art keywords
- sealing
- section
- plunger
- gas well
- cylindrical
- 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.)
- Pending
Links
- 239000007789 gas Substances 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000002343 natural gas well Substances 0.000 title claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 83
- 230000000712 assembly Effects 0.000 claims abstract description 6
- 238000000429 assembly Methods 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 229920002530 polyetherether ketone Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 239000007788 liquid Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/122—Gas lift
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/122—Gas lift
- E21B43/123—Gas lift valves
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a sealed drainage gas production plunger of a natural gas well, which is characterized in that: comprises a plunger body, the lower end of the plunger body is fixedly provided with a connecting section, the lower end of the connecting section is fixedly provided with a cylindrical section, the middle part of the cylindrical section is fixedly provided with a column hole, the column hole is provided with an electric control valve for controlling the opening or closing of the column hole, a plunger piston seat is arranged on the lower end surface of the cylindrical section, a sealing component for sealing is arranged between the cylindrical sections, the sealing assemblies are at least three groups, and the cylindrical sections on the sealing assemblies are connected through the connecting column sections, so that the gas well with the diameter changed on the inner wall can be conveniently penetrated in the upward liquid lifting process, meanwhile, the bent gas well section can conveniently pass through the gas well section, the condition of liquid leakage is ensured not to occur, the integral air tightness is improved, meanwhile, in the descending process, the falling resistance of the plunger is reduced, the falling speed is increased, and the well closing time is shortened.
Description
Technical Field
The invention relates to the technical field of natural gas equipment manufacturing equipment, in particular to a sealed drainage gas production plunger of a natural gas well.
Background
At present, in various gas fields at home and abroad, a plunger used for plunger gas lift drainage is suitable for a vertical well, the diameter size of the vertical well cannot be changed, the plunger cannot be used in the vertical well with the changed diameter, and meanwhile, for a transition part of a bent pipeline, the existing plunger can pass through, but the condition of liquid leakage can be generated, so that the liquid lifting efficiency of a gas well is low, meanwhile, in the descending process, the resistance of the plunger is large, the descending speed is slow, the well closing time field is large, meanwhile, the friction degree of a sealing air cushion is large, and the service life is short.
Disclosure of Invention
The invention aims to solve the problems and provides a sealed drainage gas production plunger of a natural gas well.
In order to achieve the purpose, the invention provides the following technical scheme: the method is characterized in that: the plunger comprises a plunger body, the fixed linkage segment that is provided with of plunger body lower extreme, the fixed cylinder section that is provided with of linkage segment lower extreme, the fixed column hole that is provided with in cylinder section middle part, be provided with the electric control valve who is used for controlling the opening of column hole or closes on the column hole, the terminal surface is provided with the plunger seat ware under the cylinder section, be provided with the seal assembly who plays sealed effect between the cylinder section, seal assembly is three groups at least, and the multiunit the cylinder section on the seal assembly is connected through the linkage column section.
The technical scheme is that in the used engineering: the gas well that goes upward to lift the liquid in-process, can conveniently pass through inner wall diameter change can conveniently pass at crooked gas well section simultaneously to guarantee can not produce the condition emergence of weeping, increase holistic airtight performance, at down in-process simultaneously, reduce plunger whereabouts resistance, improve the falling speed, shorten the shut-in time.
Preferably, the connecting section is made of elastic rubber material.
Preferably, the cylindrical section is made of elastic rubber materials, and bending can be achieved.
Preferably, a fishing neck is formed between the connecting section and the cylindrical section, the upper end and the lower end of the column hole penetrate through the plunger body, a sealed groove is formed in the plunger body, an electric control valve used for controlling the opening or closing of the column hole is arranged on the part of the column hole penetrating through the groove, and a pressure sensor used for detecting air pressure is arranged on the inner wall of the column hole.
Preferably, a supporting cylinder for penetrating through the column hole is arranged in the middle of the plunger seat, the upper end of the supporting cylinder is connected with the lower end face of the cylindrical section in a sealing mode, and a sealing ring is fixedly wrapped on the outer side face of the supporting cylinder.
Preferably, the sealing component comprises a supporting section, a sealing air bag, a sealing gasket, a pressure detection sensor and an automatic inflator pump, the supporting section is fixedly sleeved outside the cylindrical section and is cylindrical, a sealing annular groove is formed between the middle of the supporting section and the outer wall of the cylindrical section, the cylindrical section fixedly and hermetically penetrates through the supporting section, the sealing air bag for sealing is fixedly arranged on the periphery of the supporting section and is made of elastic rubber materials and is expanded through inflation, the sealing air bag is fixedly provided with a plurality of sealing gaskets with the same specification on the periphery, the sealing gaskets are made of polyether-ether-ketone, the pressure detection sensor is arranged on the sealing gaskets, a controller for controlling the sealing annular groove is arranged in the sealing annular groove, and the automatic inflator pump for inflating and deflating the sealing air bag is arranged in the sealing annular groove, the automatic inflator pump is communicated with the sealed air bag through an air conveying pipeline, the automatic inflator pump is communicated with the column hole through a pipeline, an electric valve is arranged on the pipeline, the electric valve is electrically connected with the controller, and the support section and the column section are provided with lead perforations for lead penetration.
Compared with the prior art, the invention has the beneficial effects that: the invention relates to a sealed water drainage gas production plunger of a natural gas well, which can conveniently pass through the gas well with the diameter of the inner wall changed in the process of ascending liquid lifting, can conveniently pass through a bent gas well section, ensures that the condition of liquid leakage cannot occur, increases the whole air tightness, reduces the falling resistance of the plunger in the descending process, improves the falling speed and shortens the time of closing the well.
Drawings
FIG. 1 is a front view of a sealed drainage gas production plug for a gas well of the present invention.
Fig. 2 is a schematic structural view of a sealed drainage gas production plunger of a gas well according to the present invention.
FIG. 3 is a side view of the closed drainage gas production plug seal assembly of the gas well of the present invention.
Fig. 4 is a schematic structural diagram of a sealed drainage gas production plunger seal assembly of a gas well according to the present invention.
In the figure: 1-plunger body, 2-connecting section, 3-cylindrical section, 4-supporting section, 5-sealing air bag, 6-connecting column section, 7-sealing ring, 8-plunger seat, 9-supporting cylinder, 10-column hole, 11-, 12-groove, 13-electric control valve, 14-controller, 15-automatic inflator pump, 16-gas transmission pipeline, 17-pipeline, 18-sealing gasket and 19-pressure detection sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: the method is characterized in that: the plunger comprises a plunger body 1, wherein a connecting section 2 is fixedly arranged at the lower end of the plunger body 1, the connecting section 2 is made of elastic rubber materials, a cylindrical section 3 is fixedly arranged at the lower end of the connecting section 2, the cylindrical section 3 is made of elastic rubber materials and can be bent, a column hole 10 is fixedly arranged in the middle of the cylindrical section 3, a fishing neck is formed between the connecting section 2 and the cylindrical section 3, the upper end and the lower end of the column hole 10 penetrate through the plunger body 1, a sealed groove 12 is formed in the plunger body 1, an electric control valve 13 for controlling the opening or closing of the column hole 10 is arranged at the part of the column hole 10 penetrating through the groove 12, a pressure sensor for detecting air pressure is arranged on the inner wall of the column hole 10, the pressure sensor and the electric control valve are both electrically connected with a controller, and a plunger seat 8 is arranged on the lower end surface of the cylindrical section 3, a supporting cylinder 9 for penetrating a cylinder hole 10 is arranged in the middle of the plunger piston seat 8, the upper end of the supporting cylinder 9 is hermetically connected with the lower end face of the cylindrical section 3, and a sealing ring 7 is fixedly wrapped on the outer side face of the supporting cylinder 9;
the outer side of the cylindrical section 3 is fixedly sleeved with a supporting section 4, the supporting section 4 is cylindrical, a sealing annular groove is formed between the middle of the supporting section 4 and the outer wall of the cylindrical section 3, the cylindrical section 3 penetrates through the supporting section 4 in a fixed sealing manner, a sealing air bag 5 for sealing is fixedly arranged at the periphery of the supporting section 4, the sealing air bag 5 is made of elastic rubber materials and expands through inflation, a plurality of sections of sealing gaskets 18 with the same specification are fixedly arranged at the periphery of the sealing air bag 5, the sealing gaskets 18 are made of polyether ether ketone to improve the abrasion resistance, a pressure detection sensor 19 is arranged on each sealing gasket 18, a controller 14 for controlling is arranged in each sealing annular groove, an automatic inflator pump 15 for inflating and deflating the sealing air bag 5 is arranged in each sealing annular groove, and the automatic inflator pump 15 is communicated with the sealing air bag 15 through an air transmission pipeline 16, the automatic inflating pump 15 is communicated with the column hole 10 through a pipeline 17, an electric valve is arranged on the pipeline 17, the electric valve is electrically connected with the controller 14, the supporting section 4 and the cylindrical section 3 are provided with a lead perforation 11 for a lead to penetrate through, the supporting section 4, the sealing air bag 5, the sealing gasket 18, the pressure detection sensor 19 and the automatic inflating pump 15 form a group of sealing components, the sealing components are at least three groups, the plurality of groups of cylindrical sections 3 on the sealing components are connected through the connecting column section 6, the pressure between the sealing gasket 18 on the sealing air bag 5 and the inner wall of the gas well is detected through the pressure detection sensor 19, when the inner diameter of the gas well changes, the pressure value is detected through the pressure detection sensor and transmitted to the controller 14, the automatic inflating pump 15 is controlled to work through the controller 14, and the working state of the electric valve is correspondingly controlled, aerify or bleed sealed air pocket 5 through automatic inflator pump 15, the condition that has been applicable to in the gas well and transform, when needs pass through crooked gas well, among three sealing assembly of group, the sealed air cushion internal diameter diminishes in the sealing assembly who passes crooked position earlier, conveniently pass through, the sealing assembly of rear end plays sealed effect, the sealing assembly who passes through earlier passes through the back, the sealed air cushion internal diameter reverts former dress, realize sealed effect, sealed air pocket internal diameter in the sealing assembly of rear end diminishes, conveniently carry out through crooked gas well, play sealed effect simultaneously.
The working principle of the invention is as follows: the pressure between a sealing gasket 18 on a sealing air bag 5 and the inner wall of a gas well is detected through a pressure detection sensor 19, when the inner diameter of the gas well changes, the pressure value is detected through the pressure detection sensor and is transmitted to a controller 14, the automatic inflator pump 15 is controlled to work through the controller 14, the working state of an electric valve is correspondingly controlled, the sealing air bag 5 is inflated or deflated through the automatic inflator pump 15, the sealing air bag is suitable for the conditions of changing in the gas well, when the gas well needs to be bent, the inner diameter of a sealing air cushion in a sealing assembly which firstly passes through a bending position in three groups of sealing assemblies is reduced so as to be convenient to pass through, the sealing assembly at the rear end plays a sealing role, after the sealing assembly which firstly passes through is returned to an original package, the sealing effect is realized, the inner diameter of the sealing air bag in the sealing assembly at the rear end is reduced, and the bent gas well is convenient to pass through, meanwhile, the sealing function is achieved, the falling resistance of the plunger is reduced by reducing the inner diameter of the sealing air bag or opening the electric control valve on the column hole, the falling speed is improved, and the well closing time is shortened.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a canned type drainage gas production plunger of natural gas well which characterized in that: the plunger comprises a plunger body (1), a connecting section (2) is fixedly arranged at the lower end of the plunger body (1), a cylindrical section (3) is fixedly arranged at the lower end of the connecting section (2), a column hole (10) is fixedly arranged in the middle of the cylindrical section (3), an electric control valve (13) used for controlling the opening or closing of the column hole (10) is arranged on the column hole (10), a plunger seat (8) is arranged on the lower end face of the cylindrical section (3), sealing assemblies playing a sealing role are arranged between the cylindrical sections (3), the sealing assemblies are at least three groups, and the cylindrical sections (3) on the sealing assemblies are connected through a connecting column section (6).
2. The closed-type drainage gas production plug for a natural gas well as set forth in claim 1, wherein: the connecting section (2) is made of elastic rubber materials.
3. The closed-type drainage gas production plug for a natural gas well as set forth in claim 1, wherein: the cylindrical section (3) is made of elastic rubber materials, and can be bent.
4. The closed-type drainage gas production plug for a natural gas well as set forth in claim 3, wherein: the fishing device is characterized in that a fishing neck is formed between the connecting section (2) and the cylindrical section (3), the plunger body (1) penetrates through the upper end and the lower end of the column hole (10), a sealed groove (12) is formed in the plunger body (1), an electric control valve (13) used for controlling the opening or closing of the column hole (10) is arranged on the part, penetrating through the groove (12), of the column hole (10), and a pressure sensor used for detecting air pressure is arranged on the inner wall of the column hole (10).
5. The sealed drainage gas production plug of a natural gas well as set forth in claim 4, wherein: the plunger piston setting device is characterized in that a supporting cylinder (9) used for penetrating through a cylinder hole (10) is arranged in the middle of the plunger piston setting device (8), the upper end of the supporting cylinder (9) is connected with the lower end face of the cylinder section (3) in a sealing mode, and a sealing ring (7) is fixedly wrapped on the outer side face of the supporting cylinder (9).
6. The closed-type drainage gas production plug for a natural gas well as set forth in claim 5, wherein: the sealing component comprises a supporting section (4), a sealing air bag (5), a sealing gasket (18), a pressure detection sensor (19) and an automatic inflator pump (15), wherein the supporting section (4) is fixedly sleeved outside the cylindrical section (3), the supporting section (4) is cylindrical, a sealing annular groove is formed between the middle of the supporting section (4) and the outer wall of the cylindrical section (3), the cylindrical section (3) fixedly penetrates through the supporting section (4) in a sealing manner, the sealing air bag (5) for sealing is fixedly arranged at the periphery of the supporting section (4), the sealing air bag (5) is made of elastic rubber materials and expands through inflation, the sealing gasket (18) with multiple sections of the same specification is fixedly arranged at the periphery of the sealing air bag (5), the sealing gasket (18) is made of polyether ether ketone, and the pressure detection sensor (19) is arranged on the sealing gasket (18), be provided with controller (14) that is used for control in the sealed annular groove, be provided with in the sealed annular groove and be used for inflating automatic inflator pump (15) of gassing to sealed air pocket (5), communicate through gas transmission pipeline (16) between automatic inflator pump (15) and sealed air pocket (15), automatic inflator pump (15) communicate through pipeline (17) with post hole (10), be provided with electric valve on pipeline (17), electric valve and controller (14) pass through electric connection, be provided with wire perforation (11) that are used for the wire to run through on support section (4) and cylinder section (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111463528.9A CN114198068A (en) | 2021-12-03 | 2021-12-03 | Sealed drainage gas production plunger of natural gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111463528.9A CN114198068A (en) | 2021-12-03 | 2021-12-03 | Sealed drainage gas production plunger of natural gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114198068A true CN114198068A (en) | 2022-03-18 |
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ID=80650286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111463528.9A Pending CN114198068A (en) | 2021-12-03 | 2021-12-03 | Sealed drainage gas production plunger of natural gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114198068A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115217752A (en) * | 2022-06-22 | 2022-10-21 | 中国石油大学(北京) | Plunger piston |
-
2021
- 2021-12-03 CN CN202111463528.9A patent/CN114198068A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115217752A (en) * | 2022-06-22 | 2022-10-21 | 中国石油大学(北京) | Plunger piston |
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