CN105971589B - Pressure-detecting device under a kind of coal bed gas well - Google Patents
Pressure-detecting device under a kind of coal bed gas well Download PDFInfo
- Publication number
- CN105971589B CN105971589B CN201610382600.8A CN201610382600A CN105971589B CN 105971589 B CN105971589 B CN 105971589B CN 201610382600 A CN201610382600 A CN 201610382600A CN 105971589 B CN105971589 B CN 105971589B
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- Prior art keywords
- pressure
- connect
- cabin
- coal bed
- bed gas
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- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
Abstract
The present invention relates to coal bed gas equipment technical fields, disclose pressure-detecting device under a kind of coal bed gas well, pressure-detecting device includes: pedestal, pressure detection mechanism, data processing equipment under the coal bed gas well, shell, seal receptacle, sealing gland and transmission cable, wherein, the pressure detection mechanism is connect with the pedestal, and the pressure detection mechanism includes pressure detecting cabin, the pressure sensor being set in the pressure detecting cabin and the first hatchcover connecting with the top in the pressure detecting cabin；The data processing equipment is connect with the pressure detection mechanism, including processing cabin, the data processing circuit being set in the processing cabin and the second hatchcover connecting with the processing cabin top, and the data processing equipment is located at the top of the pressure detection mechanism.Pressure-detecting device, which solves the problems such as poor sealing, measurement result is inaccurate, under coal bed gas well provided by the invention may be implemented the real-time detection of pressure, improve the accuracy of leakproofness and measurement.
Description
Technical field
The present invention relates to coal bed gas equipment technical field, in particular to pressure-detecting device under a kind of coal bed gas well.
Background technique
The exploration and development process of coal bed gas mainly includes drilling well, complete well and mining stage, and mining is cbm development
Important link, the down-hole pressure data during coal bed gas extraction are most important, it is to judge mining accident and formulate reasonable
The important parameter of mining technique.
In the production of coal bed gas, generally by the way that in coal seam drilling, then setting of casing installs pressure gauge to measure underground
Pressure.
Present inventor at least exists in the prior art during realizing the embodiment of the present application technical solution
Following technical problem:
Existing detection device, not can guarantee leakproofness, so that measurement result is inaccurate, and the mode to drill is only
A certain depth can be reached, not can guarantee the measurement to the pressure of gas in the biggish coal seam of depth, in addition, the data of pressure gauge need
It wants tester to read, and manual record, can not reflect the actual change situation of coal bed gas, so that measurement result is inaccurate.
Summary of the invention
The present invention solves poor sealing, measurement result not by providing pressure-detecting device under a kind of coal bed gas well
The problems such as accurate.
To solve the above-mentioned problems, the present invention provides pressure-detecting device under a kind of coal bed gas well, the detection devices
It include: pedestal, including inside and outside；Pressure detection mechanism is connect with the pedestal, and the pressure detection mechanism includes pressure
Detect cabin, the pressure sensor being set in the pressure detecting cabin and the first cabin connecting with the top in the pressure detecting cabin
Lid；Data processing equipment is connect with the pressure detection mechanism, at processing cabin, the data being set in the processing cabin
Reason circuit and the second hatchcover being connect with the processing cabin top, and the data processing equipment is located at the pressure detection mechanism
Top；Shell, the external connection with the pedestal；Seal receptacle is connect with the top of the shell；Sealing gland, and it is described
The top of seal receptacle connects；Transmission cable is connect with the data processing equipment, and passes through first hatchcover, seal receptacle, close
Sealed cover is until earth's surface；Wherein, the base center opens up fluted, and rubber sheet gasket is equipped in the groove, and the pressure passes
Sensor is connect with the groove, and the rubber sheet gasket is compressed, the lower part in the pressure detecting cabin and the inside of the pedestal
Connection.
Further, the detection device further includes centering ring, and the centering ring is connect with second hatchcover.
Further, through-hole is offered on the centering ring, second hatchcover is equipped with threaded hole, and screw passes through described
Through-hole and the threaded hole cooperate.
Further, the upper end of the sealing gland is provided with stepped hole, and the sealing gland is equipped with internal screw thread.
Further, the detection device further includes cable sealed joint, and the cable sealed joint passes through the interior spiral shell
Line is connect with the sealing gland.
Further, the cable sealed joint is equipped with centre bore.
Further, the detection device further includes gasket, and the gasket is located in the stepped hole.
Further, the detection device further includes rubber ring, and the rubber ring is located in the seal receptacle.
Further, the top in the pressure detecting cabin is connect with the lower thread of first hatchcover.
Further, the top in the processing cabin is connect with the lower thread of second hatchcover.
Compared with prior art, pressure-detecting device has the following advantages that and beneficial to effect under coal bed gas well provided by the invention
Fruit:
Pressure-detecting device under coal bed gas well of the invention, pressure sensor are connect with the groove, and by the rubber
Gasket compresses, and is connect by seal receptacle with the top of the shell；Sealing gland is connect with the top of the seal receptacle, can be with
The leakproofness for guaranteeing pressure-detecting device, solves the problems, such as that sealing effect is bad in the prior art, and pass through pressure sensor
Bottom pressure is acquired, the collected pressure data of pressure sensor is real-time transmitted to data processing equipment, data processing through conducting wire
Device through transmission cable is real-time transmitted to earth's surface after again being handled the data received, to reflect under coal bed gas well in real time
The situation of change of pressure improves the accuracy of pressure detecting.
Further, centering ring is connect with second hatchcover, it is ensured that the positioning to data processing equipment, and pass through
Screw connection, further increases the reliability of connection.
Further, the detection device further includes cable sealed joint, it can be achieved that sealing to transmission cable, the electricity
Cable seal nipple is connect by the internal screw thread with the gland, and leakproofness is further increased.
Further, the upper end of sealing gland is provided with stepped hole, there is gasket in stepped hole, it is ensured that sealing gland and electricity
The compactness of cable seal nipple connection.
Further, the rubber ring is located in the seal receptacle, can make the connection of sealing gland Yu seal receptacle top
More closely.
Further, the top in the pressure detecting cabin is connect with the lower thread of first hatchcover, the processing cabin
Top connect with the lower thread of second hatchcover, the better tightness of pressure-detecting device can be made, and then improve
The accuracy of pressure detecting.
Detailed description of the invention
In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment
Attached drawing and appended drawing reference are briefly described, it should be apparent that, the accompanying drawings in the following description is only the implementation of the application
Example, for those of ordinary skill in the art, without creative efforts, can also be according to the attached drawing of offer
Obtain other attached drawings.
Fig. 1 is the structural front view of pressure-detecting device under coal bed gas well provided in an embodiment of the present invention；
Fig. 2 is the structure top view of pressure-detecting device under coal bed gas well provided in an embodiment of the present invention；Appended drawing reference is said
Bright: 1. pedestal, 2. pressure detecting cabin, 3. pressure sensor, 4. first hatchcover 5. handles 6. second hatchcover of cabin, 7. shell 8.
13. screw of seal receptacle 9. sealing gland, 10. transmission cable, 11. rubber sheet gasket, 12. centering ring, 14. cable sealed joint
15. 16. rubber ring of gasket
Specific embodiment
The present invention solves poor sealing, measurement result not by providing pressure-detecting device under a kind of coal bed gas well
The problems such as accurate.
The technical solution of the embodiment of the present application is in order to solve the above technical problems, general thought is as follows: under a kind of coal bed gas well
Pressure-detecting device, the detection device include: pedestal, including inside and outside；Pressure detection mechanism connects with the pedestal
Connect, the pressure detection mechanism include pressure detecting cabin, the pressure sensor being set in the pressure detecting cabin and with it is described
First hatchcover of the top connection in pressure detecting cabin；Data processing equipment is connect with the pressure detection mechanism, including processing
Cabin, the data processing circuit being set in the processing cabin and the second hatchcover being connect with the processing cabin top, and the number
It is located at the top of the pressure detection mechanism according to processing unit；Shell, the external connection with the pedestal；Seal receptacle, and it is described
The top of shell connects；Sealing gland is connect with the top of the seal receptacle；Transmission cable connects with the data processing equipment
It connects, and passes through first hatchcover, seal receptacle, sealing gland until earth's surface；Wherein, the base center opens up fluted, institute
It states and is equipped with rubber sheet gasket in groove, the pressure sensor is connect with the groove, and the rubber sheet gasket is compressed, the pressure
The lower part in power detection cabin is connect with the inside of the pedestal, and a detection device generally measuring probe can enter coal gas
Layer carries out pressure detecting, and can guarantee the leakproofness of measurement, to improve the accuracy of measurement.
The technical solution of the application in order to better understand, in conjunction with appended figures and specific embodiments
Above-mentioned technical proposal is described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to this Shen
Please technical solution detailed description, rather than the restriction to technical scheme, in the absence of conflict, the application are real
The technical characteristic applied in example and embodiment can be combined with each other.
Referring to Figure 1 to Fig. 2, the embodiment of the invention provides pressure-detecting device under a kind of coal bed gas well, the detections
Device includes:
Pedestal 1, including it is inside and outside；
Pressure detection mechanism is connect with the pedestal 1, and the pressure detection mechanism includes pressure detecting cabin 2, is set to institute
The first hatchcover 4 stating the pressure sensor 3 in pressure detecting cabin 2 and being connect with the top in the pressure detecting cabin 2；
Data processing equipment is connect with the pressure detection mechanism, including processing cabin 5, is set in the processing cabin 5
Data processing circuit and the second hatchcover 6 being connect with processing 5 top of cabin, and the data processing equipment is located at the pressure
The top of testing agency；
Shell 7, the external connection with the pedestal 1；
Seal receptacle 8 is connect with the top of the shell 7；
Sealing gland 9 is connect with the top of the seal receptacle 8；
Transmission cable 10 is connect with the data processing equipment, and passes through first hatchcover 4, seal receptacle 8, sealing pressure
Lid 9 is until earth's surface；
Specifically, pedestal 1 is a ladder platform stage structure, and each step is machined with external screw thread, and the center of pedestal 1 opens up
Fluted, Pocket Machining has internal screw thread, and rubber sheet gasket 11 is placed in the groove of pedestal 1, pressure sensor 3 by screw thread with it is recessed
Slot is connected and is sealed the compression of rubber sheet gasket 11, and the lower part in pressure detecting cabin 2 and the interior step of pedestal 1 pass through screw thread
It is connected, and is connect by seal receptacle 8 with the top of the shell 7；Sealing gland 9 is connect with the top of the seal receptacle 8,
It can guarantee the leakproofness of pressure-detecting device, to solve the problems, such as that sealing effect is bad in the prior art, and pass through pressure
Force snesor 3 acquires bottom pressure, and the collected pressure data of pressure sensor 3 is real-time transmitted to data processing through conducting wire and fills
It sets, data processing equipment through transmission cable 10 is real-time transmitted to earth's surface after again being handled the data received, thus in real time
The situation of change for reflecting coal bed gas down-hole pressure, improves the accuracy of pressure detecting.
Preferably, the detection device further includes centering ring 12, the centering ring 12 is connect with second hatchcover 6,
It can guarantee the positioning to data processing equipment.
Preferably, offering through-hole on the centering ring 12, second hatchcover 6 is equipped with threaded hole, specifically
Ground, the size of the through-hole is identical as the size of the threaded hole, and screw 13 can screw in after through the through-hole on centering ring 12
In the threaded hole of second hatchcover 6, so that centering ring 12 be made to be connected with the second hatchcover 6.
Preferably, the upper end of the sealing gland 9 is provided with stepped hole, and the sealing gland 9 is equipped with internal screw thread, with
Guarantee the connectivity of sealing gland 9 and other component.
Preferably, the detection device further includes cable sealed joint 14, the cable sealed joint 14 passes through described
Internal screw thread is connect with the sealing gland 9, to improve leakproofness.
Preferably, the cable sealed joint 14 is equipped with centre bore, the transmission cable 10 is passed through described
Centre bore, and pressure data is sent to earth's surface.
Preferably, the detection device further includes gasket 15, the gasket 15 is located in the stepped hole, cable seal
Connector 14 can be connected with sealing gland 9 by screw thread and be sealed the compression of gasket 15, to guarantee sealing gland 9 and electricity
The compactness that cable seal nipple 14 connects.
Preferably, the detection device further includes rubber ring 16, the rubber ring 16 is located in the seal receptacle 8, more
For specifically, the outer round surface of centering ring 12 is close to the inner wall of shell 7, in order to further ensure leakproofness, the embodiment of the present application
It can also include the second gasket, the second gasket is placed on the outer steps of pedestal 1, and the lower part of shell 7 can pass through screw thread and bottom
The outer steps of seat 1 are connected and are sealed the second gasket compression, and the embodiment of the present application may also include third gasket, described
Third gasket is placed in the top of shell 7, and the top of shell 7 is machined with internal screw thread, and seal receptacle 8 can pass through screw thread and shell
7 top is connected and is sealed third gasket compression, and seal receptacle 8 is a groove structure and is machined with external screw thread, rubber
Ring 16 is placed in the groove of seal receptacle 8, can make the connection of sealing gland 9 and seal receptacle 8 more closely.
Further, the top in the pressure detecting cabin 2 is connect with the lower thread of first hatchcover 4, the processing
The top in cabin 5 is connect with the lower thread of second hatchcover 6, can make the better tightness of pressure-detecting device, in turn
Improve the accuracy of pressure detecting.
The specific work process of pressure-detecting device under a kind of coal bed gas well provided by the invention, the pressure is described below
Then collected pressure data is real-time transmitted to the number handled in cabin 5 through conducting wire for acquiring bottom pressure by force snesor 3
According to processing circuit, data processing circuit through transmission cable 10 is real-time transmitted to earth's surface after being handled the data received, from
And realize the real-time detection to coal bed gas down-hole pressure.
Compared with prior art, pressure-detecting device has the following advantages that and beneficial to effect under coal bed gas well provided by the invention
Fruit:
Pressure-detecting device under coal bed gas well of the invention, pressure sensor are connect with the groove, and by the rubber
Gasket compresses, and is connect by seal receptacle with the top of the shell；Sealing gland is connect with the top of the seal receptacle, can be with
The leakproofness for guaranteeing pressure-detecting device, solves the problems, such as that sealing effect is bad in the prior art, and pass through pressure sensor
Bottom pressure is acquired, the collected pressure data of pressure sensor is real-time transmitted to data processing equipment, data processing through conducting wire
Device through transmission cable is real-time transmitted to earth's surface after again being handled the data received, to reflect under coal bed gas well in real time
The situation of change of pressure improves the accuracy of pressure detecting.
Further, centering ring is connect with second hatchcover, it is ensured that the positioning to data processing equipment, and pass through
Screw connection, further increases the reliability of connection.
Further, the detection device further includes cable sealed joint, it can be achieved that sealing to transmission cable, the electricity
Cable seal nipple is connect by the internal screw thread with the gland, and leakproofness is further increased.
Further, the upper end of sealing gland is provided with stepped hole, there is gasket in stepped hole, it is ensured that sealing gland and electricity
The compactness of cable seal nipple connection.
Further, the rubber ring is located in the seal receptacle, can make the connection of sealing gland Yu seal receptacle top
More closely.
Further, the top in the pressure detecting cabin is connect with the lower thread of first hatchcover, the processing cabin
Top connect with the lower thread of second hatchcover, the better tightness of pressure-detecting device can be made, and then improve
The accuracy of pressure detecting.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. pressure-detecting device under a kind of coal bed gas well, which is characterized in that the detection device includes:
Pedestal, including it is inside and outside；
Pressure detection mechanism is connect with the pedestal, and the pressure detection mechanism includes pressure detecting cabin, is set to the pressure
The first hatchcover for detecting the pressure sensor in cabin and being connect with the top in the pressure detecting cabin；
Data processing equipment is connect with the pressure detection mechanism, the data processing equipment include processing cabin, be set to it is described
The second hatchcover for handling the data processing circuit in cabin and being connect with the processing cabin top, and the data processing equipment is located at
The top of the pressure detection mechanism；
Shell, the external connection with the pedestal；
Seal receptacle is connect with the top of the shell；
Sealing gland is connect with the top of the seal receptacle；
Transmission cable is connect with the data processing equipment, and passes through first hatchcover, seal receptacle, sealing gland until ground
Table；
Wherein, the base center opens up fluted, is equipped with rubber sheet gasket in the groove, the pressure sensor with it is described recessed
Slot connection, and the rubber sheet gasket is compressed, the lower part in the pressure detecting cabin is connect with the inside of the pedestal.
2. pressure-detecting device under coal bed gas well according to claim 1, which is characterized in that the detection device further includes
Centering ring, the centering ring are connect with second hatchcover.
3. pressure-detecting device under coal bed gas well according to claim 2, which is characterized in that offered on the centering ring
Through-hole, second hatchcover are equipped with threaded hole, and screw is cooperated by the through-hole and the threaded hole.
4. pressure-detecting device under coal bed gas well according to claim 1, which is characterized in that the upper end of the sealing gland
It is provided with stepped hole, and the sealing gland is equipped with internal screw thread.
5. pressure-detecting device under coal bed gas well according to claim 4, which is characterized in that the detection device further includes
Cable sealed joint, the cable sealed joint are connect by the internal screw thread with the sealing gland.
6. pressure-detecting device under coal bed gas well according to claim 5, which is characterized in that the cable sealed joint is set
There is centre bore.
7. pressure-detecting device under coal bed gas well according to claim 5, which is characterized in that the detection device further includes
Gasket, the gasket are located in the stepped hole.
8. pressure-detecting device under coal bed gas well according to claim 1, which is characterized in that the detection device further includes
Rubber ring, the rubber ring are located in the seal receptacle.
9. pressure-detecting device under coal bed gas well according to claim 1, which is characterized in that the pressure detecting cabin it is upper
Portion is connect with the lower thread of first hatchcover.
10. pressure-detecting device under coal bed gas well according to claim 1, which is characterized in that the top in the processing cabin
It is connect with the lower thread of second hatchcover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610382600.8A CN105971589B (en) | 2016-06-01 | 2016-06-01 | Pressure-detecting device under a kind of coal bed gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610382600.8A CN105971589B (en) | 2016-06-01 | 2016-06-01 | Pressure-detecting device under a kind of coal bed gas well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105971589A CN105971589A (en) | 2016-09-28 |
| CN105971589B true CN105971589B (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610382600.8A Expired - Fee Related CN105971589B (en) | 2016-06-01 | 2016-06-01 | Pressure-detecting device under a kind of coal bed gas well |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843253A (en) * | 2018-08-01 | 2018-11-20 | 西南石油大学 | A kind of compound lifting pumping unit oil pipe in underground and oil storing tube jointing |
| CN109403956A (en) * | 2018-11-07 | 2019-03-01 | 王仪腾龙 | Natural gas well down-hole pressure safety detection device based on pressure sensor |
| CN110017132B (en) * | 2019-05-24 | 2023-12-22 | 中国地质科学院地质力学研究所 | Hydraulic fracturing packer and fracturing section pressure monitoring device |
| CN114215507B (en) * | 2021-05-21 | 2023-11-17 | 华北科技学院(中国煤矿安全技术培训中心) | Gas pressure measuring device and method based on directional drilling machine |
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| CN201106447Y (en) * | 2007-11-15 | 2008-08-27 | 中国石油天然气股份有限公司 | Device for monitoring pressure below coal bed gas well |
| CN201884024U (en) * | 2010-09-28 | 2011-06-29 | 北京品傲光电科技有限公司 | Fiber grating sensor-based system used for monitoring coalbed methane well |
| CN202673280U (en) * | 2012-05-31 | 2013-01-16 | 中国石油化工股份有限公司 | CBM (Coal Bed Methane) well downhole pressure real-time monitoring system |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040129428A1 (en) * | 2002-12-20 | 2004-07-08 | Kelley Terry Earl | Plunger lift deliquefying system for increased recovery from oil and gas wells |
| US9127536B2 (en) * | 2008-12-29 | 2015-09-08 | Reservoir Management Services, Llc | Tool for use in well monitoring |
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Patent Citations (4)
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|---|---|---|---|---|
| CN201106447Y (en) * | 2007-11-15 | 2008-08-27 | 中国石油天然气股份有限公司 | Device for monitoring pressure below coal bed gas well |
| CN201884024U (en) * | 2010-09-28 | 2011-06-29 | 北京品傲光电科技有限公司 | Fiber grating sensor-based system used for monitoring coalbed methane well |
| CN202673280U (en) * | 2012-05-31 | 2013-01-16 | 中国石油化工股份有限公司 | CBM (Coal Bed Methane) well downhole pressure real-time monitoring system |
| 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 |
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| CN105971589A (en) | 2016-09-28 |
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