CN204041061U - A kind of coal bed gas gas well automatic liquid level tester - Google Patents
A kind of coal bed gas gas well automatic liquid level tester Download PDFInfo
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- CN204041061U CN204041061U CN201420336730.4U CN201420336730U CN204041061U CN 204041061 U CN204041061 U CN 204041061U CN 201420336730 U CN201420336730 U CN 201420336730U CN 204041061 U CN204041061 U CN 204041061U
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- 239000007788 liquid Substances 0.000 title claims abstract description 26
- 239000003245 coal Substances 0.000 title claims abstract description 22
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 238000005065 mining Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
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Abstract
The utility model belongs to petroleum well logging technology field, has been specifically related to a kind of coal bed gas gas well automatic liquid level tester.This tester comprise be connected with by logging well wellhead connector, for give provided compressed-air actuated air feed source of the gas, armouring tracheae by well logging; Wellhead connector comprises urceolus, compressed air channel and the release cover gas passage be arranged in urceolus, be arranged on wellhead connector with by the microphone of link position of logging well and pressure transmitter; Compressed air channel one end is connected with air feed source of the gas by armouring tracheae, and the other end is communicated with being logged well; Release cover gas passage end is communicated with ambient atmosphere, and the other end is communicated with being logged well.Release cover gas and compressed air two kinds of mode of operations combine by tester of the present utility model, and measuring accuracy is high, be easy to operation.
Description
Technical field
The utility model belongs to petroleum well logging technology field, relates to a kind of tester, has particularly related to a kind of coal bed gas gas well automatic liquid level tester.
Background technology
Coal bed gas gas well, in the process of mining, frequent testing ring set space dynamic oil level, understands level change situation at any time, also will carry out real-time testing to surface casing pressure.
Coal bed gas well casing pressure excursion in mining process is generally-0.05MPa ~ 5MPa, in mining process, the normal variation of casing pressure is increasing trend, there are die mould and pressure-free type general being divided into by instrument, have the instrument of die mould to complete measurement by relief sleeve gas sounding, the instrument of pressure-free type completes measurement by release compressed air sounding.
Coal bed gas well experiences with no pressure and has two stages of pressure in mining process, needs to change dissimilar instrument and bring unnecessary workload to user in mining process.In mining process, run into handling situations at coal bed gas well, well casing pressure can get back to situation with no pressure again.User repeatedly may change the requirement that instrument meets the change of cover gas.Very inconvenient like this, need a kind of the instrument of both compatibilities just can be solved this contradiction.
Utility model content
For solving in background technology the above-mentioned technical problem existed, the utility model provide a kind of release cover gas and compressed air two kinds of mode of operations are combined and measuring accuracy high, be easy to the coal bed gas gas well automatic liquid level testing arrangement that operates.
Concrete technical scheme of the present utility model is:
A kind of coal bed gas gas well automatic liquid level tester, is characterized in that: comprise be connected with by log well wellhead connector, for being provided compressed-air actuated air feed source of the gas, armouring tracheae by well logging;
Described wellhead connector comprises urceolus, compressed air channel and the release cover gas passage be arranged in urceolus, be arranged on wellhead connector with by the microphone of link position of logging well and pressure transmitter;
Described compressed air channel one end is connected by armouring tracheae with air feed source of the gas, and the other end is communicated with being logged well; Described release cover gas passage end is communicated with ambient atmosphere, and the other end is communicated with being logged well.
Above-mentioned air feed source of the gas comprises casing, the motor connected successively, air pump, the escape pipe be arranged in casing; The gas outlet of described escape pipe is communicated with compressed air channel.
Above-mentioned air feed source of the gas also comprises the DTU be arranged in casing.
Above-mentioned compressed air channel comprise according to compressed air flow to set gradually gas storehouse, control compressed-air actuated electromagnetic valve, compressed air escape pipe; Described gas storehouse is communicated with armouring tracheae; Described compressed air escape pipe is communicated with being logged well.
Above-mentioned release cover gas passage comprises the escape pipe of the air inlet pipe of the release cover gas set gradually to direction according to release cover air-flow, the electromagnetic valve of Co ntrolled release cover gas and release cover gas; The air inlet pipe of described release cover gas is communicated with being logged well; The escape pipe of described release cover gas is communicated with ambient atmosphere.
Above-mentioned compressed air channel also comprises one way valve; Between described one way valve is arranged on compressed air escape pipe and is logged well.
Above-mentioned release cover gas passage also comprises noise damper; Between the escape pipe that described noise damper is arranged on release cover gas and ambient atmosphere.
The utility model has the advantage of:
The utility model provides a kind of automatic liquid level tester that release cover gas and compressed air are combined, and this tester mainly comprises two large divisions, wellhead connector part and control cabinet part.The utility model judges the mode of operation of instrument by control circuit, i.e. release cover gas pattern and compressed air pattern, these two kinds of patterns are by the break-make of respective passage electromagnetic valve, casing gas by putting cover air circuit (or compressed air by compressed air loop) abrupt release, produce infrasound, sound wave is propagated along ring set space to down-hole, and the sound wave reflected is received by microphone and converts the signal of telecommunication to, is stored in system or by upper computer software playback liquid level.The utility model has the advantages such as handling safety, easy to use, easy care.The utility model can realize liquid level and automatically calculates and realize data remote, without the need to tester to well site; Can store test data, test data can copy; Surface casing pressure can be gathered; Communication interface has RS485, GPRS.
Accompanying drawing explanation
Fig. 1 is the structural representation of coal bed gas gas well automatic liquid level tester provided by the utility model;
Fig. 2 is the structural representation of the coal bed gas gas well automatic liquid level tester wellhead connector part that the utility model adopts;
Fig. 3 is the coal bed gas gas well automatic liquid level tester air feed source of the gas partial schematic diagram that the utility model adopts;
Reference numeral is as follows:
1-wellhead connector, 11-urceolus 12-compressed air channel, 121-gas storehouse, 122-controls compressed-air actuated electromagnetic valve, 123-compressed air escape pipe, 124-one way valve, 13-release cover gas passage, the air inlet pipe of 131-release cover gas, the electromagnetic valve of 132-Co ntrolled release cover gas, the escape pipe of 133-release cover gas, 134-noise damper, 125-pressure sensor, 14-microphone, 15-pressure transmitter, 16-wellhead connector control circuit, 2-air feed source of the gas, 21-casing, 22-motor, 23-air pump, 24-escape pipe, 25-DTU, 26-mini-type muffler, 27-air feed source of the gas control circuit, 28-power supply, 3-armouring tracheae, 4-connection cable.
Detailed description of the invention
The utility model provides a kind of automatic liquid level tester that release cover gas and compressed air are combined.
This coal bed gas gas well automatic liquid level tester, comprise be connected with by logging well wellhead connector 1, for give provided compressed-air actuated air feed source of the gas 2, armouring tracheae 3 by well logging;
Wherein, wellhead connector 1 comprise urceolus 11, be arranged on compressed air channel 12 in urceolus 11 and release cover gas passage 13, be arranged on wellhead connector 1 with by the microphone 14 of link position of logging well and pressure transmitter 15;
Compressed air channel 12 one end is connected by armouring tracheae 3 with air feed source of the gas 2, and the other end is communicated with being logged well; Described release cover gas passage 13 one end is communicated with ambient atmosphere, and the other end is communicated with being logged well.
Air feed source of the gas 2 comprises casing 21, the motor 22 connected successively, air pump 23, the escape pipe 24 be arranged in casing 21; The gas outlet of escape pipe 24 is communicated with compressed air channel 12.
In order to realize the work of Long-distance Control air feed source of the gas, this tester also comprises the DTU25 for realizing remote testing.
Further, the compressed air channel in this device in fact comprise according to compressed air flow to set gradually gas storehouse 121, control compressed-air actuated electromagnetic valve 122, compressed air escape pipe 123; Gas storehouse 121 is communicated with armouring tracheae 3; Compressed air escape pipe 123 is communicated with being logged well.
Further, in fact the release cover gas passage 13 in this device comprises the escape pipe 133 of the air inlet pipe 131 of the release cover gas set gradually to direction according to release cover air-flow, the electromagnetic valve 132 of Co ntrolled release cover gas and release cover gas; The air inlet pipe 131 of release cover gas is communicated with being logged well; The escape pipe 133 of release cover gas is communicated with ambient atmosphere.
In order to ensure the safety of work, avoid being entered compressed air channel 12 by the pressure in logging well, compressed air channel 12 also comprises one way valve 124; Between one way valve 124 is arranged on compressed air escape pipe 123 and is logged well.
In the course of the work, can send very large noise during release cover gas, therefore the release cover gas passage 13 of this device also comprises noise damper 134; Between the escape pipe 133 that noise damper 134 is arranged on release cover gas and ambient atmosphere.
Be described below in conjunction with the structure optimization scheme of accompanying drawing to the device that the utility model proposes:
As described in Figure 1, wellhead connector 1 is connected on air feed source of the gas 2 by armouring tracheae 2 and connection cable 4.
As described in Figure 2, the wellhead connector 1 that the utility model adopts comprises urceolus 11, compressed air channel 12, release cover gas passage 13 and wellhead connector control circuit 16; Wherein, compressed air channel 12 comprises gas storehouse 121, controls compressed-air actuated electromagnetic valve 122, compressed air escape pipe 123, and one way valve 124 is connected through successively, forms the compressed-air actuated passage of well head.
Release cover gas passage 13 comprises the escape pipe 131 of release cover gas, the electromagnetic valve 132 of Co ntrolled release cover gas, the escape pipe 133 of release cover gas, and sound absorber 134 is connected through successively, forms the passage of well head release cover gas.
The passage 13 of compressed-air actuated passage 12 and release cover gas is installed in urceolus 11 side by side, gas storehouse 121 is provided with pressure sensor 125, wellhead connector 1 with link position of log well is had the microphone 14 being provided with collected sound signal and the pressure transmitter 15 measuring casing pressure;
Wellhead connector control circuit 16 has detection by functions such as log pressure, detection gas storehouse pressure, collection liquid level waveform, detection methane concentration, level calculate automatically.
As described in Figure 3, the air feed source of the gas 2 that the utility model adopts comprises casing 21, the motor 22 be arranged in casing 21, air pump 23, mini-type muffler 26, escape pipe 24, one way valve 124, air feed source of the gas control circuit 27, power supply 28, DTU25.
Wherein, motor 22, air pump 23, mini-type muffler 26, escape pipe 24, one way valve 124 has connected to form successively provides compressed-air actuated source of the gas;
Power supply 28 is used to power to motor 22 and air pump 23, and DTU48 is used for realizing the work of Long-distance Control air feed source of the gas.
Air feed source of the gas control circuit 27 is for the detection of the methane concentration and motor 22 temperature that detect air feed source of the gas 2 place.
The utility model in use, in order to realize automatic control, need host computer to be connected with wellhead connector control circuit (actual this control circuit be single-chip microcomputer) and air feed source of the gas control circuit (this control circuit actual is single-chip microcomputer) respectively to realize to by the test of the liquid level in well logging well;
The utility model is as follows in specific works process:
1) test starts:
Host computer sends test command respectively to wellhead connector control circuit and air feed source of the gas control circuit, replys realization and shake hands after wellhead connector control circuit and air feed source of the gas control circuit receive order;
2) detected parameters:
The methane concentration of wellhead connector control circuit to wellhead connector place detects; Air feed source of the gas control circuit detects the methane concentration of air feed source of the gas part and motor; If detect, the methane concentration at two places is less than 10000ppm, and motor temperature about 80 DEG C time, is then thought that parameter is up to standard and carried out next step;
3) judgement of mode of operation:
Pressure transmitter detects by the pressure in well logging, if tested borehole pressure is less than 0.3Mpa, then opens pneumatically operated pattern; If tested borehole pressure is greater than 0.3Mpa, then open release cover gas mode of operation;
Pneumatically operated pattern detailed process is: motor starts compressed air, and detected the size of gas storehouse pressure by the pressure sensor on gas storehouse, when reaching the threshold value of setting, system sends motor and ceases and desist order, and motor stops; Control compressed-air actuated electromagnetic valve to open, the compressed air in release gas storehouse, compressed air clashes into liquid level in well sounds;
Release cover gas mode of operation detailed process is: the electromagnetic valve of Co ntrolled release cover gas is opened, and release cover gas, sounds;
4) judgement of level:
The voice signal that microphone produces when receiving pneumatically operated pattern or release cover gas mode of operation, and this signal is sent to single-chip microcomputer; Single-chip microcomputer calculates current by the level of logging well by sound velocity method.
5) tested.
Especially, owing to being also provided with DTU equipment in this tester, therefore, also can test by well logging liquid level at this tester of Long-distance Control.
Coal bed gas gas well automatic liquid level tester is by control cabinet, wellhead connector, and armouring tracheae, connection cable forms.Forming choosing of each device of this tester all to select by testing for a long time, especially in low temperature resistant, high pressure resistant, corrosion-resistant, having done strict test.
Claims (7)
1. a coal bed gas gas well automatic liquid level tester, is characterized in that: comprise be connected with by logging well wellhead connector, for give provided compressed-air actuated air feed source of the gas, armouring tracheae by well logging;
Described wellhead connector comprises urceolus, compressed air channel and the release cover gas passage be arranged in urceolus, be arranged on wellhead connector with by the microphone of link position of logging well and pressure transmitter;
Described compressed air channel one end is connected with air feed source of the gas by armouring tracheae, and the other end is communicated with being logged well; Described release cover gas passage end is communicated with ambient atmosphere, and the other end is communicated with being logged well.
2. coal bed gas gas well automatic liquid level tester according to claim 1, is characterized in that: described air feed source of the gas comprises casing, the motor connected successively, air pump, the escape pipe be arranged in casing; The gas outlet of described escape pipe is communicated with compressed air channel.
3. coal bed gas gas well automatic liquid level tester according to claim 1 and 2, is characterized in that: described tester also comprises the DTU that can realize Long-distance Control.
4. coal bed gas gas well automatic liquid level tester according to claim 3, is characterized in that: described compressed air channel comprise according to compressed air flow to set gradually gas storehouse, control compressed-air actuated electromagnetic valve, compressed air escape pipe; Described gas storehouse is communicated with armouring tracheae; Described compressed air escape pipe is communicated with being logged well.
5. coal bed gas gas well automatic liquid level tester according to claim 4, is characterized in that: described release cover gas passage comprises the escape pipe of the air inlet pipe of the release cover gas set gradually to direction according to release cover air-flow, the electromagnetic valve of Co ntrolled release cover gas and release cover gas; The air inlet pipe of described release cover gas is communicated with being logged well; The escape pipe of described release cover gas is communicated with ambient atmosphere.
6. coal bed gas gas well automatic liquid level tester according to claim 5, is characterized in that: described compressed air channel also comprises one way valve; Between described one way valve is arranged on compressed air escape pipe and is logged well.
7. coal bed gas gas well automatic liquid level tester according to claim 6, is characterized in that: described release cover gas passage also comprises noise damper; Between the escape pipe that described noise damper is arranged on release cover gas and ambient atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420336730.4U CN204041061U (en) | 2014-06-23 | 2014-06-23 | A kind of coal bed gas gas well automatic liquid level tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420336730.4U CN204041061U (en) | 2014-06-23 | 2014-06-23 | A kind of coal bed gas gas well automatic liquid level tester |
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| Publication Number | Publication Date |
|---|---|
| CN204041061U true CN204041061U (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420336730.4U Expired - Lifetime CN204041061U (en) | 2014-06-23 | 2014-06-23 | A kind of coal bed gas gas well automatic liquid level tester |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909239A (en) * | 2016-07-06 | 2016-08-31 | 沈阳新石科技有限公司 | Multifunctional automatic oil well liquid level monitoring device |
| CN106057061A (en) * | 2016-08-17 | 2016-10-26 | 西安科技大学 | Laboratory simulation system and method for coal mine gas extraction boring leakage position detection |
| CN106869906A (en) * | 2017-02-24 | 2017-06-20 | 沈阳新石科技有限公司 | A kind of oil well liquid level automated watch-keeping facility, method and system |
| CN111119842A (en) * | 2019-12-23 | 2020-05-08 | 山西晋城无烟煤矿业集团有限责任公司 | Automatic metering method and system for low water yield of coal-bed gas well |
| CN111734393A (en) * | 2020-06-28 | 2020-10-02 | 中国石油天然气股份有限公司 | Oil well working fluid level testing device and operation method |
-
2014
- 2014-06-23 CN CN201420336730.4U patent/CN204041061U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909239A (en) * | 2016-07-06 | 2016-08-31 | 沈阳新石科技有限公司 | Multifunctional automatic oil well liquid level monitoring device |
| CN106057061A (en) * | 2016-08-17 | 2016-10-26 | 西安科技大学 | Laboratory simulation system and method for coal mine gas extraction boring leakage position detection |
| CN106057061B (en) * | 2016-08-17 | 2018-07-17 | 西安科技大学 | Coal mine gas extraction drill hole Gas leak position testing laboratory's simulation system and method |
| CN106869906A (en) * | 2017-02-24 | 2017-06-20 | 沈阳新石科技有限公司 | A kind of oil well liquid level automated watch-keeping facility, method and system |
| CN111119842A (en) * | 2019-12-23 | 2020-05-08 | 山西晋城无烟煤矿业集团有限责任公司 | Automatic metering method and system for low water yield of coal-bed gas well |
| CN111119842B (en) * | 2019-12-23 | 2023-05-09 | 山西晋城无烟煤矿业集团有限责任公司 | Automatic metering method and system for low water yield of coal-bed gas well |
| CN111734393A (en) * | 2020-06-28 | 2020-10-02 | 中国石油天然气股份有限公司 | Oil well working fluid level testing device and operation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141224 |