CN201173115Y - Underground pressure gauge with double-layer structure for natural gas well - Google Patents
Underground pressure gauge with double-layer structure for natural gas well Download PDFInfo
- Publication number
- CN201173115Y CN201173115Y CNU2008203004964U CN200820300496U CN201173115Y CN 201173115 Y CN201173115 Y CN 201173115Y CN U2008203004964 U CNU2008203004964 U CN U2008203004964U CN 200820300496 U CN200820300496 U CN 200820300496U CN 201173115 Y CN201173115 Y CN 201173115Y
- Authority
- CN
- China
- Prior art keywords
- pipe
- protection
- circuit board
- inner protection
- pressure sensor
- 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
Links
- 239000002343 natural gas well Substances 0.000 title claims description 9
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 229920002449 FKM Polymers 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 239000003345 natural gas Substances 0.000 abstract description 2
- 229920001973 fluoroelastomer Polymers 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The utility model discloses a gas well downhole pressure gauge with a double-layer structure, which comprises a pressure sensor (1); the method is characterized in that: the upper end of the pressure sensor (1) is connected with a circuit board (4), a battery pack (7) is positioned above the circuit board (4) and connected with the circuit board (4), an inner protection lower pipe (5) is sleeved outside the pressure sensor (1), an inner protection upper pipe (6) is sleeved outside the battery pack (7), the upper end of the inner protection lower pipe (5) is connected with the lower end of the inner protection upper pipe (6), and a sealing ring (3) is arranged below the inner protection upper pipe (6); an outer protection tube (8) is sleeved outside the inner protection lower tube (5) and the inner protection upper tube (6), and a main sealing ring (2) is arranged below the outer protection tube (8). The utility model discloses use bilayer structure to the sealing washer all adopts the lower fluororubber preparation of air permeability, effectively slows down "ladder" form leakage of natural gas, has guaranteed the pressure stability of instrument inner structure, can reduce the damage risk of group battery, electron device etc. makes the time of the reliable work of instrument one time of going into the well exceed 90 days, has improved the reliability of instrument, has reduced the maintenance cost. The utility model also has the advantages of simple structure, easy production, low cost, etc.
Description
Technical field
The utility model relates to downhole electronic pressure bomb, particularly relates to the structure of gas field with downhole electronic pressure bomb, belongs to the pressure test technical field.
Background technology
Pressure test is an important content in the natural gas well well testing work.In carrying out the gas well recovery pressure test process of (being called for short " the multiple pressure "), pressure gauge will be placed on the down-hole for a long time, reaches 90 days.Because gas molecule is smaller, from the sealing ring of rubber material, see through easily, there is the pressure existence build-up of pressure meter inside, makes damages such as electronic component, battery and pressure sensor, and pressure gauge can't record normal data.Manometric application life is generally shorter, and maintenance cost is higher.
The utility model content
The purpose of this utility model is: a kind of double-deck downhole electronic pressure bomb is provided, makes instrument once go into the well the reliable time of testing above 90 days, reduce maintenance cost, to overcome the deficiency of present technology.
The utility model is achieved in that double-deck natural gas well pressure bomb, its formation comprises pressure sensor (1), be connected with circuit board (4) in pressure sensor (1) upper end, battery pack (7) is positioned at circuit board (4) top, and be connected with circuit board (4), pipe (5) under the protection in pressure sensor (1) outside is with, pipe (6) is gone up in protection in battery pack (7) outside is with, in protection down in upper end and the interior protection of pipe (5) lower end of pipe (6) is connected, be provided with sealing ring (3) below in interior protection, managing (6); Protection tube (8) outside pipe (6) outside is with in pipe (5) and the interior protection under interior protection, protection tube (8) below is provided with primary seal circle (2) outside.
Described double-deck natural gas well pressure bomb, it is more preferably the viton seal ring that is of primary seal circle (2) and sealing ring (3).
Compared with prior art, the utility model uses double-decker, and sealing ring all adopts the lower fluorubber of air penetrability to make, " ladder " shape that effectively slows down natural gas leaks, guaranteed the pressure stability of instrument internal structure, can reduce the damage risk of battery pack, electronic device etc., made instrument once go into the well time of reliably working above 90 days, improve the reliability of instrument, reduced maintenance cost.Advantages such as the utility model also has simple in structure, produces easily, and is with low cost.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
Reference numeral: protection is managed the interior protection of 6-down and is gone up protection tube outside the pipe 7-battery pack 8-in the 1-pressure sensor 2-primary seal circle 3-sealing ring 4-circuit board 5-
The specific embodiment
Embodiment 1 of the present utility model: double-deck natural gas well pressure bomb, its formation comprises pressure sensor 1; Be connected with circuit board 4 in pressure sensor 1 upper end, battery pack 7 is positioned at circuit board 4 tops, and be connected with circuit board 4, in being with, pressure sensor 1 outside manages 5 under the protection, in being with, battery pack 7 outsides manage 6 in the protection, the lower end of pipe 6 is connected in pipe 5 upper end under the interior protection and interior protection, is being provided with sealing ring 3 below managing 6 in the interior protection; Protection tube 8 outside pipe 6 outsides are with in pipe 5 and the interior protection under interior protection, protection tube 8 belows are provided with primary seal circle 2 outside; The material of primary seal circle 2 and sealing ring 3 adopts fluorubber to make.
The major function of pressure sensor 1 is the variation of responsive gas well internal pressure, and force value is converted to the signal of telecommunication; The function of circuit board 4 is that the signal of telecommunication is carried out treatment conversion, stores in the memory; Battery pack 7 provides the power supply of whole instrument work; Down in pipe 5, the interior protection among the first floor protection of pipe 6 and sealing ring 3, outer protection tube 8 and primary seal circle 2 had been formed second layer protection in protection in pressure sensor 1, circuit board 4 and battery pack 7 were in; Primary seal circle 2 and sealing ring 3 all adopt fluorubber processing, and the air penetrability of this material is low.Downhole electronic pressure bomb of the present utility model is applicable to the occasion of the natural gas well or conventional oil, well pressure test.
Claims (2)
1. double-deck natural gas well pressure bomb, it comprises pressure sensor (1), it is characterized in that: be connected with circuit board (4) in pressure sensor (1) upper end, battery pack (7) is positioned at circuit board (4) top and is connected with circuit board (4), pipe (5) under the protection in pressure sensor (1) outside is with, pipe (6) is gone up in protection in battery pack (7) outside is with, in protection down in upper end and the interior protection of pipe (5) lower end of pipe (6) is connected, be provided with sealing ring (3) below in interior protection, managing (6); Protection tube (8) outside pipe (6) outside is with in pipe (5) and the interior protection under interior protection, protection tube (8) below is provided with primary seal circle (2) outside.
2. double-deck natural gas well pressure bomb according to claim 1 is characterized in that: primary seal circle (2) and sealing ring (3) are viton seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203004964U CN201173115Y (en) | 2008-04-02 | 2008-04-02 | Underground pressure gauge with double-layer structure for natural gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203004964U CN201173115Y (en) | 2008-04-02 | 2008-04-02 | Underground pressure gauge with double-layer structure for natural gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201173115Y true CN201173115Y (en) | 2008-12-31 |
Family
ID=40200231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008203004964U Expired - Fee Related CN201173115Y (en) | 2008-04-02 | 2008-04-02 | Underground pressure gauge with double-layer structure for natural gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201173115Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670377A (en) * | 2013-11-08 | 2014-03-26 | 常州凯锐自动化控制设备有限公司 | Double-sensor pressure gauge for underground coal-bed gas |
| CN106703790A (en) * | 2017-01-19 | 2017-05-24 | 成都海川高科科技有限公司 | Downhole electronic pressure bomb |
| CN109668679A (en) * | 2019-01-29 | 2019-04-23 | 中国石油集团川庆钻探工程有限公司 | Multistage buffer isolation device for quartz crystal pressure gauge sensor |
| CN110700814A (en) * | 2019-10-28 | 2020-01-17 | 贵州航天凯山石油仪器有限公司 | Method and device for improving sealing reliability of gas well pressure gauge |
-
2008
- 2008-04-02 CN CNU2008203004964U patent/CN201173115Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670377A (en) * | 2013-11-08 | 2014-03-26 | 常州凯锐自动化控制设备有限公司 | Double-sensor pressure gauge for underground coal-bed gas |
| CN106703790A (en) * | 2017-01-19 | 2017-05-24 | 成都海川高科科技有限公司 | Downhole electronic pressure bomb |
| CN109668679A (en) * | 2019-01-29 | 2019-04-23 | 中国石油集团川庆钻探工程有限公司 | Multistage buffer isolation device for quartz crystal pressure gauge sensor |
| CN109668679B (en) * | 2019-01-29 | 2023-11-03 | 中国石油集团川庆钻探工程有限公司 | Multistage buffering isolation device for quartz crystal pressure gauge sensor |
| CN110700814A (en) * | 2019-10-28 | 2020-01-17 | 贵州航天凯山石油仪器有限公司 | Method and device for improving sealing reliability of gas well pressure gauge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081231 Termination date: 20140402 |