CN214660761U - Novel gas well flowing back is piston for gas production - Google Patents
Novel gas well flowing back is piston for gas production Download PDFInfo
- Publication number
- CN214660761U CN214660761U CN202022476338.8U CN202022476338U CN214660761U CN 214660761 U CN214660761 U CN 214660761U CN 202022476338 U CN202022476338 U CN 202022476338U CN 214660761 U CN214660761 U CN 214660761U
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- China
- Prior art keywords
- piston
- center tube
- lamella
- combination
- tube
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- Expired - Fee Related
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 241000446313 Lamella Species 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 230000006835 compression Effects 0.000 claims abstract description 8
- 238000007906 compression Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 abstract description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model provides a novel gas well flowing back is piston for gas production by salvage head (1), go up center tube (2), elastic expansion telescopic cylinder (3), center tube (4) down, go up spacing cover (5), go up piston lamella combination (6), compression spring (7), middle fixing base (8), lower piston lamella combination (9), lower spacing cover (10), lower joint (11), steel ball (12) are constituteed, elastic expansion telescopic cylinder (3) and last piston lamella combination (6), lower piston lamella combination (9) all can radially stretch out and draw back, guarantee to have good sealing performance when the trafficability characteristic is good in oil pipe, can realize the flowing back gas production of gas well under the lower pressure difference.
Description
Technical Field
The utility model relates to a novel gas well flowing back is piston for gas production belongs to oil and gas production machinery.
Background
The plunger gas lift is a common process for gas well drainage and production, a piston is one of the most critical downhole tools, the piston has the function of separating a liquid column and gas in an oil pipe, and the liquid column on the piston can be lifted to a well head under the pushing of the gas under the action of the gas pressure, so that the piston intermittently reciprocates between the well head and a clamping device up and down in the oil pipe, the requirement that the piston has good trafficability and sealing performance is required, the trafficability and the sealing performance are opposite surfaces which are mutually influenced, the sealing performance is ensured to be weakened, the trafficability is ensured to be also weakened, the trafficability is also ensured to be weakened, and the key point of research in the field is how to solve the contradiction. The existing piston is mainly columnar and split, can basically meet the production requirement of a gas well under the condition of large energy of the gas well, but is difficult to ensure the effectiveness of a plunger gas lift process after the energy of the gas well is reduced.
Disclosure of Invention
An object of the utility model is to provide a novel gas well flowing back is piston for gas production.
The utility model discloses a realize like this, by fishing head (1), go up center tube (2), elasticity inflation telescopic tube (3), center tube (4) down, go up spacing cover (5), go up piston lamella combination (6), compression spring (7), middle fixing base (8), lower piston lamella combination (9), down spacing cover (10), lower joint (11), steel ball (12) constitute, its equipment relation is: elastic expansion telescopic tube (3) is connected on center tube (4) top external screw thread down, go up center tube (2) lower extreme and center tube (4) top internal thread connection down, it is connected with fishing head (1) to go up center tube (2) top, connect back elastic expansion telescopic tube (3) upper portion and just in time insert fishing head (1) in, stop collar (5) are connected in proper order to lower center tube (4) periphery from the top down, go up piston lamella combination (6), middle fixing base (8), lower piston lamella combination (9), lower stop collar (10), install compression spring (7) between last piston lamella combination (6) and lower piston lamella combination (9) and center tube (4) down, lower clutch (11) are connected center tube (4) lower extreme down, steel ball (12) and lower clutch (11) inner chamber contact.
The beneficial effects of the utility model are that, except flexible section of thick bamboo of elasticity inflation (3), go up piston lamella combination (6), lower piston lamella combination (9), all the other part external diameters all far are less than the oil pipe internal diameter, flexible section of thick bamboo of elasticity inflation (3), go up piston lamella combination (6), lower piston lamella combination (9) all have radial elasticity flexible, and the flexible volume of diameter can reach 8mm, ensure the piston good trafficability characteristic in the oil pipe, the oil pipe inner wall can be hugged closely under the pressure effect in flexible section of thick bamboo of elasticity inflation (3), go up piston lamella combination (6), lower piston lamella combination (9) also hug closely the oil pipe inner wall under compression spring (7) effect, ensured that the piston wholly has good leakproofness.
Drawings
Fig. 1 is a general diagram of a novel piston structure for gas well liquid drainage and gas production. The present invention will be further explained with reference to the drawings and examples.
Detailed Description
As shown in fig. 1, a novel piston for gas well liquid drainage and gas production comprises a fishing head 1, an upper central tube 2, an elastic expansion telescopic cylinder 3, a lower central tube 4, an upper limiting sleeve 5, an upper piston flap combination 6, a compression spring 7, an intermediate fixing seat 8, a lower piston flap combination 9, a lower limiting sleeve 10, a lower joint 11 and a steel ball 12, and the assembling relation is as follows: the elastic expansion telescopic cylinder 3 is connected on the external thread on the top of the lower central tube 4, the lower end of the upper central tube 2 is connected with the internal thread on the top of the lower central tube 4, the top of the upper central tube 2 is connected with the fishing head 1, the upper part of the elastic expansion telescopic cylinder 3 is just inserted into the fishing head 1 after the connection, the periphery of the lower central tube 4 is sequentially connected with the upper limit sleeve 5, the upper piston flap combination 6, the middle fixing seat 8, the lower piston flap combination 9 and the lower limit sleeve 10 from top to bottom, a compression spring 7 is arranged between the upper piston flap combination 6 and the lower piston flap combination 9 and the lower central tube 4, the lower joint 11 is connected at the lower end of the lower central tube 4, a steel ball 12 is contacted with the inner cavity of the lower joint 11, the diameter of the steel ball 12 is larger than the inner diameter of the upper end of the lower joint 11 and smaller than the inner diameter of the lower end of the lower joint 11, a through hole is arranged on the middle lower part of the upper central tube 2, the liquid column pressure of the piston can act on the inner wall of the elastic expansion telescopic cylinder 3 through the through hole, the elastic expansion telescopic cylinder 3 is forced to generate elastic expansion and cling to the inner wall of an oil pipe, the upper part of the elastic expansion telescopic cylinder 3 is inserted into the lower part of the fishing head 1, the elastic expansion telescopic cylinder 3 is restrained and protected, 2 piston clacks are combined as shown in figure 1, and the number of the piston clacks can be increased as required.
Claims (4)
1. The utility model provides a novel gas well flowing back is piston for gas production which characterized in that: by fishing head (1), go up center tube (2), elasticity inflation telescopic tube (3), center tube (4) down, go up spacing cover (5), go up piston lamella combination (6), compression spring (7), middle fixing base (8), lower piston lamella combination (9), spacing cover (10) down, lower clutch (11), steel ball (12) are constituteed, its equipment relation is: elastic expansion telescopic tube (3) is connected on center tube (4) top external screw thread down, go up center tube (2) lower extreme and center tube (4) top internal thread connection down, it is connected with fishing head (1) to go up center tube (2) top, connect back elastic expansion telescopic tube (3) upper portion and just in time insert fishing head (1) in, stop collar (5) are connected in proper order to lower center tube (4) periphery from the top down, go up piston lamella combination (6), middle fixing base (8), lower piston lamella combination (9), lower stop collar (10), install compression spring (7) between last piston lamella combination (6) and lower piston lamella combination (9) and center tube (4) down, lower clutch (11) are connected center tube (4) lower extreme down, steel ball (12) and lower clutch (11) inner chamber contact.
2. The novel piston for gas well liquid drainage and gas production as claimed in claim 1, wherein: the middle lower part of the upper central tube (2) is provided with a through hole.
3. The novel piston for gas well liquid drainage and gas production as claimed in claim 1, wherein: the diameter of the steel ball (12) is larger than the inner diameter of the upper end of the lower joint (11) and smaller than the inner diameter of the lower end of the lower joint (11).
4. The novel piston for gas well liquid drainage and gas production as claimed in claim 1, wherein: according to the actual situation, the number of piston lobe combinations can be increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022476338.8U CN214660761U (en) | 2020-11-01 | 2020-11-01 | Novel gas well flowing back is piston for gas production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022476338.8U CN214660761U (en) | 2020-11-01 | 2020-11-01 | Novel gas well flowing back is piston for gas production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214660761U true CN214660761U (en) | 2021-11-09 |
Family
ID=78444761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022476338.8U Expired - Fee Related CN214660761U (en) | 2020-11-01 | 2020-11-01 | Novel gas well flowing back is piston for gas production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214660761U (en) |
-
2020
- 2020-11-01 CN CN202022476338.8U patent/CN214660761U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211109 |