CN108678729A - A kind of high-pressure gas well wellbore effusion face automated watch-keeping facility and method - Google Patents
A kind of high-pressure gas well wellbore effusion face automated watch-keeping facility and method Download PDFInfo
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- CN108678729A CN108678729A CN201810836603.3A CN201810836603A CN108678729A CN 108678729 A CN108678729 A CN 108678729A CN 201810836603 A CN201810836603 A CN 201810836603A CN 108678729 A CN108678729 A CN 108678729A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012544 monitoring process Methods 0.000 claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 claims abstract description 31
- 238000004880 explosion Methods 0.000 claims abstract description 20
- 238000009434 installation Methods 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000004064 recycling Methods 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims description 25
- 230000006837 decompression Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 230000000644 propagated effect Effects 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims description 2
- 238000004364 calculation method Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 196
- 239000002343 natural gas well Substances 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 11
- 241000521257 Hydrops Species 0.000 description 6
- 206010030113 Oedema Diseases 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000001737 promoting effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Classifications
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- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
- E21B47/047—Liquid level
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- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
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- Fluid Mechanics (AREA)
- Geophysics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Acoustics & Sound (AREA)
- Remote Sensing (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a kind of high-pressure gas well wellbore effusion face automated watch-keeping facility and method, which includes being mounted on the explosion-proof monitoring executing agency of high-pressure gas well pit shaft mouth and being connect for the exhaust emissions mechanism to production flow line emission with the explosion-proof monitoring executing agency；The method comprising the steps of：One, the installation of automated watch-keeping facility；Two, gas storehouse air inlet is balanced；Three, the generation of air-flow explosion and the recycling of tail gas；Four, high-pressure gas well wellbore effusion face monitors；Five, step 3 is repeated several times to step 4, it can be achieved that the multiple monitoring in high-pressure gas well wellbore effusion face；Six, the pressure release and dismounting of explosion-proof monitoring executing agency.The present invention can carry out the natural gas well under high pressure, containing corrosive gas environment that the wellbore effusion face intervened without personnel is real-time continuous, automatic monitoring, greatly reduce operating cost, raising operating efficiency and safety.
Description
Technical field
The invention belongs to high-pressure gas well wellbore effusion face monitoring technical fields, and in particular to a kind of high-pressure gas well wellbore effusion
Face automated watch-keeping facility and method.
Background technology
Wellbore effusion face is gas well during normal production, and free water, hydro carbons condensed liquid and gas flow in stratum enter
Pit shaft and the fluid column face formed, wellbore effusion face are generally indicated with the depth from well head to liquid level position, the numerical value in hydrops face
Directly reflect pit shaft in hydrops number, in gas well recovery process, hydrops is excessive, increase bottom pressure, reduce gas well yield,
The accidents such as gas well water logging, stop-spraying can seriously be led to, in gas well mining operations, it is necessary to wellbore effusion carry out in real time monitoring and
Hydrops controls operation, and wellbore effusion is made to keep a rational height, and therefore, the hydrops face of gas well is reflection stratum gas supply capacity
An important indicator, be natural gas well production link, the indispensable parameter of technology establishment has in natural gas production
It is significant.
In gas well exploitation, test dress in portable manual wellbore effusion face is generally all used to the test in wellbore effusion face
It sets, in test, needing personnel to intervene could test and analyze this test device, and testing efficiency is low, test
It is of high cost, it cannot monitor in real time, it is totally unfavorable to production control；Currently, there is a small number of regional Introduced From Abroad remote monitoring test dresses
It sets and carries out long-pending liquid level test, but be only limitted to test in low-pressure gas well, be more than 30MPa high-pressure gas wells for pressure, test can not be into
Row.
Invention content
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of high-pressure gas well
Wellbore effusion face automated watch-keeping facility, it is novel in design reasonable, it can be under high pressure, containing corrosive gas environment to natural gas
The wellbore effusion face that well intervene without personnel monitors continuously, automatically, greatly reduces operating cost, improves operating efficiency and safety
Property, convenient for promoting the use of.
In order to solve the above technical problems, the technical solution adopted by the present invention is：Include mounted on high-pressure gas well pit shaft mouth
It explosion-proof monitoring executing agency and is connect for the exhaust emissions to production flow line emission with the explosion-proof monitoring executing agency
Mechanism；The explosion-proof monitoring executing agency includes explosion-proof casing and the balance gas storehouse and circuit control that are arranged in explosion-proof casing
Box, the inlet end for balancing gas storehouse are equipped with high-pressure solenoid valve, balance the outlet side installation limited valve of gas storehouse, and well head connecting cylinder is worn
It crosses explosion-proof casing and divides two-way, be connected to all the way with high-pressure solenoid valve, another way is connected to by pressure limiting valve back pressure pipe with pressure limiting valve；Well head
Sound collecting device is installed, pressure limiting valve includes valve body and the cylinder that is arranged in valve body, and one end of cylinder offers in connecting cylinder
The other end of backpressure passage, cylinder offers inlet channel, and the cross-sectional area of inlet channel is less than the cross-sectional area of cylinder, air inlet
The cross-sectional area in channel is more than the cross-sectional area of backpressure passage, and pressure limiting valve piston is stretched to across cylinder in backpressure passage, back pressure
Limited valve back pressure piston is set in channel, and pressure limiting valve back pressure piston is connect by spring with pressure limiting valve piston, and backpressure passage is remote
One end from cylinder offers back pressure through-hole, and the cross-sectional area of back pressure through-hole is less than the cross-sectional area of backpressure passage, the side of cylinder
Outlet passageway is offered on wall, pressure limiting valve back pressure pipe is connected to back pressure through-hole, and the outlet side for balancing gas storehouse is connected to inlet channel；
The exhaust emissions mechanism includes being connected to the tail gas connecting tube of outlet passageway and production flow line, is leaned in tail gas connecting tube
One end of nearly outlet passageway is equipped with tail gas dump valve, and tail gas pressure reducing is equipped with close to one end of production flow line in tail gas connecting tube
Valve；
First pressure sensor is installed on well head connecting cylinder, balances and second pressure sensor, circuit is installed in gas storehouse
The communication module for being provided with microcontroller in control box and being connect with the microcontroller, first pressure sensor, second pressure
Sensor, sound collecting device and high-pressure solenoid valve are connect with the microcontroller.
A kind of above-mentioned high-pressure gas well wellbore effusion face automated watch-keeping facility, it is characterised in that：The tail gas dump valve is
Check valve.
A kind of above-mentioned high-pressure gas well wellbore effusion face automated watch-keeping facility, it is characterised in that：The sound collecting device is
Microphone.
A kind of above-mentioned high-pressure gas well wellbore effusion face automated watch-keeping facility, it is characterised in that：It is opened on the explosion-proof casing
Equipped with power interface and communication interface, the output end of solar electrical energy generation module is powered by power interface for circuit control box, outside
Portion's computer is connect by communication interface with the communication module.
A kind of above-mentioned high-pressure gas well wellbore effusion face automated watch-keeping facility, it is characterised in that：The well head connecting cylinder is logical
It crosses first flange disk to be fixedly connected with the second flange disk of the high-pressure gas well pit shaft mouth, the first flange disk and described second
It is sealed by sealing ring between ring flange.
A kind of above-mentioned high-pressure gas well wellbore effusion face automated watch-keeping facility, it is characterised in that：The pressure limiting valve back pressure is lived
Plug is towards on the end face of spring or pressure limiting valve piston is towards being equipped with third pressure sensor on the end face of spring.
Meanwhile that the invention also discloses a kind of method and steps is simple, reasonable design, can monitor high-pressure gas well wellbore effusion face
Method, which is characterized in that this approach includes the following steps：
Step 1: the installation of automated watch-keeping facility, process are as follows：
The installation of step 101, explosion-proof monitoring executing agency：First flange disk, well are installed on the end face of well head connecting cylinder
Mouth connecting cylinder is fixedly connected by first flange disk with the second flange disk of the high-pressure gas well pit shaft mouth, the first flange disk
It is sealed by sealing ring between the second flange disk, then one end of tail gas connecting tube is connected to outlet passageway, by tail gas
The other end of connecting tube is connected to production flow line, and tail gas dump valve is installed close to one end of outlet passageway in tail gas connecting tube,
Tail gas pressure reducing valve is installed close to one end of production flow line in tail gas connecting tube；
The communication of step 102, explosion-proof monitoring executing agency：Communication interface is opened up on explosion-proof casing, by outer computer
It is connect with the communication module by communication interface；
The power supply of step 103, explosion-proof monitoring executing agency：Power interface is opened up on explosion-proof casing, is sent out using solar energy
Electric module is the power supply of explosion-proof monitoring executing agency, and the output end of solar electrical energy generation module is connect with power interface, is circuit
Control box provides power supply；
Step 2: balance gas storehouse air inlet, process are as follows：
Step 201, the high-pressure ball valve for opening the installation of high-pressure gas well well tube port position, open simultaneously high-pressure solenoid valve, by high pressure
High pressure gas in gas well is delivered to well head connecting cylinder, and then is delivered in balance gas storehouse；
Step 202, using pressure limiting valve back pressure piston towards on the end face of spring or pressure limiting valve piston is towards the end face of spring
The third pressure sensor of upper installation acquires the stress of spring in real time, when the data of third pressure sensor acquisition are zero
When, according to formulaObtain gas pressure intensity P in balance gas storehouse2, unit MPa, and high-pressure solenoid valve is closed, it puts down
Weighing apparatus gas storehouse terminates air inlet, wherein P1For gas pressure intensity and P in well head connecting cylinder1>P2, unit MPa, S1It lives for pressure limiting valve back pressure
The cross-sectional area of plug, unit m2, S2Be pressure limiting valve piston end face cross-sectional area and S far from spring one end2>S1, unit m2；
Step 3: the generation of air-flow explosion and the recycling of tail gas：Microcontroller controls high-pressure solenoid valve and opens, and well head is connected
In connect cylinder in high pressure gas abrupt release to balance gas storehouse, high-pressure solenoid valve is closed, since air pressure connects than well head in balance gas storehouse
Air pressure is low in connect cylinder, and draught head forms instant airflow explosion at this time, generates sound wave, is propagated to deep wellbore, meanwhile, it is discharged into flat
High pressure gas in the gas storehouse that weighs squeezes pressure limiting valve piston, and then pressure limiting valve piston press spring-compressed, is discharged into balance gas storehouse
High pressure gas be emitted into tail gas connecting tube from outlet passageway through cylinder, the high pressure gas through tail gas pressure reducing valve decompression after be recycled to
In production flow line；
Step 4: high-pressure gas well wellbore effusion face monitors：Sound collecting device receives reflected anti-through wellbore effusion face
Ejected wave, and the data of reception are gone out to be transmitted to microcontroller, microcontroller calculates the depth in wellbore effusion face using the time difference；
Step 5: step 3 is repeated several times to step 4, it can be achieved that the multiple monitoring in high-pressure gas well wellbore effusion face；
Step 6: the pressure release and dismounting of explosion-proof monitoring executing agency：Pre-set first pressure sensor and second pressure
The safe pressure threshold value of sensor closes the high-pressure ball valve of high-pressure gas well well tube port position, by tail gas connecting tube from outlet passageway
It disassembles, opens high-pressure solenoid valve, well head connecting cylinder and balance gas storehouse mesohigh gas are discharged from outlet passageway, utilize well head
The first pressure sensor installed on connecting cylinder acquires the pressure in well head connecting cylinder in real time, meanwhile, pacified in gas storehouse using balancing
The second pressure sensor of dress acquires the pressure in balance gas storehouse in real time, when first pressure sensor and second pressure sensor are adopted
When the pressure data of collection is not more than safe pressure threshold value, realizes well head connecting cylinder and balance the pressure release of gas storehouse, and then realize explosion-proof
Monitor the pressure release of executing agency；Then explosion-proof monitoring executing agency is disassembled from high-pressure gas well pit shaft mouth.
Compared with the prior art, the present invention has the following advantages：
1, the automated watch-keeping facility that the present invention uses is connected by the way that high-pressure solenoid valve connection balance gas storehouse is arranged with well head
Cylinder, using pressure limiting valve by balance gas storehouse in air pressure adjustment be less than well head connecting cylinder in air pressure, pass through the opening and closing of high-pressure solenoid valve
The gas for making different high pressures forms instant airflow explosion using draught head, generates sound wave, balances in gas storehouse and well head connecting cylinder
High-pressure air source is all from high-pressure gas well, it can be achieved that being monitored continuously, automatically without the wellbore effusion face that personnel intervene, and makes convenient for promoting
With.
2, the pressure limiting valve that the automated watch-keeping facility that the present invention uses uses utilizes spring connection pressure limiting valve back pressure piston and limit
Pressure valve piston, wherein pressure limiting valve piston is connected to balance gas storehouse, and pressure limiting valve back pressure piston is connected to well head connecting cylinder, practical to make
Pressure limiting valve piston is set to be more than what pressure limiting valve back pressure piston was contacted with well head connecting cylinder with the face area that gas storehouse contacts is balanced in work
Face area balances air pressure in gas storehouse according to force analysis and is less than air pressure in well head connecting cylinder when spring stress is balanced,
Reliable draught head is provided for instant airflow explosion, reliable and stable, using effect is good；In addition, when instant airflow explosion occurs,
High pressure gas can be discharged by the outlet passageway of pressure limiting valve in balance gas storehouse, securely and reliably, continuously be monitored convenient for wellbore effusion face.
3, the automated watch-keeping facility that the present invention uses, the high pressure tail for being generated multiple explosion by the way that exhaust emissions mechanism is arranged
Gas is transmitted in production flow line after decompression and is continuing with, energy-saving and emission-reduction, does not generate pollution to environment.
4, the method that the present invention uses, step is simple, is provided into balance gas storehouse and well head connecting cylinder using high-pressure gas well
High-pressure air source meets the wellbore effusion face automatic monitor for continuously intervened without personnel, is balanced using spring stress and ensures balance gas storehouse
Interior air pressure is less than air pressure in well head connecting cylinder, is quickly opened and closed by controlling high-pressure solenoid valve, realizes multiple explosion, obtained multiple
Wellbore effusion face monitoring data often balance high pressure gas extra in gas storehouse and are emitted into tail gas company by pressure limiting valve after separate explosion
In taking over, which is recycled in production flow line after the decompression of tail gas pressure reducing valve and is continuing with, and energy-saving and emission-reduction utilize first
Pressure sensor can detect well head and connect cylinder pressure, using the detectable balance gas storehouse internal pressure power of second pressure sensor, avoid
The dismounting with pressure of explosion-proof monitoring executing agency ensures operating personnel's personal safety, convenient for promoting the use of.
In conclusion the present invention is novel in design rationally, it can be under high pressure, containing corrosive gas environment to the natural gas well
The wellbore effusion face intervene without personnel monitors continuously, automatically, greatly reduces operating cost, improves operating efficiency and safety
Property, convenient for promoting the use of.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Description of the drawings
Fig. 1 is the structure connection diagram for the automated watch-keeping facility that the present invention uses.
Fig. 2 is the structural schematic diagram of pressure limiting valve in the automated watch-keeping facility that the present invention uses.
Fig. 3 is the flow diagram of the method for the present invention.
Reference sign:
1-tail gas dump valve；2-tail gas connecting tubes；3-tail gas pressure reducing valves；
4-production flow lines；15-first pressure sensors；16-pressure limiting valve back pressure pipes；
17-pressure limiting valves；17-1-back pressure through-hole；17-2-inlet channel；
17-3-outlet passageway；17-4-pressure limiting valve back pressure piston；
17-5-spring；17-6-pressure limiting valve piston；17-7-valve body；
17-8-cylinder；17-9-backpressure passage；18-sound collecting devices；
19-second pressure sensors；20-balance gas storehouses；21-high-pressure solenoid valves；
22-well head connecting cylinders；23-sealing rings；28-circuit control boxes；
29-power interfaces；30-communication interfaces；31-explosion-proof casings.
Specific implementation mode
As depicted in figs. 1 and 2, a kind of high-pressure gas well wellbore effusion face of the present invention automated watch-keeping facility, including peace
It is connect mounted in the explosion-proof monitoring executing agency of high-pressure gas well pit shaft mouth and with the explosion-proof monitoring executing agency for production pipe
The exhaust emissions mechanism of 4 emission of line；The explosion-proof monitoring executing agency includes explosion-proof casing 31 and is arranged in explosion-proof shell
The inlet end of balance gas storehouse 20 in body 31 and circuit control box 28, balance gas storehouse 20 is equipped with high-pressure solenoid valve 21, Balance Air
Limited valve 17 is installed in the outlet side in storehouse 20, and well head connecting cylinder 22 divides two-way across explosion-proof casing 31, all the way with high-pressure solenoid valve
21 connections, another way are connected to by pressure limiting valve back pressure pipe 16 with pressure limiting valve 17；Sound collecting device is installed in well head connecting cylinder 22
18, pressure limiting valve 17 includes valve body 17-7 and the cylinder 17-8 being arranged in valve body 17-7, and one end of cylinder 17-8 offers back pressure
The other end of channel 17-9, cylinder 17-8 offer inlet channel 17-2, and the cross-sectional area of inlet channel 17-2 is less than cylinder 17-
8 cross-sectional area, the cross-sectional area of inlet channel 17-2 are more than the cross-sectional area of backpressure passage 17-9, and pressure limiting valve piston 17-6 is worn
It crosses cylinder 17-8 to stretch in backpressure passage 17-9, limited valve back pressure piston 17-4, pressure limiting valve is set in backpressure passage 17-9
Back pressure piston 17-4 is connect by spring 17-5 with pressure limiting valve piston 17-6, and backpressure passage 17-9 is opened one end far from cylinder 17-8
Equipped with back pressure through-hole 17-1, the cross-sectional area of back pressure through-hole 17-1 is less than the cross-sectional area of backpressure passage 17-9, cylinder 17-8's
Outlet passageway 17-3 is offered on side wall, pressure limiting valve back pressure pipe 16 is connected to back pressure through-hole 17-1, balances the outlet side of gas storehouse 20
It is connected to inlet channel 17-2；
The exhaust emissions mechanism includes being connected to the tail gas connecting tube 2 of outlet passageway 17-3 and production flow line 4, tail gas connection
Tail gas dump valve 1 is installed close to one end of outlet passageway 17-3 on pipe 2, close to one end of production flow line 4 in tail gas connecting tube 2
Tail gas pressure reducing valve 3 is installed；
First pressure sensor 15 is installed on well head connecting cylinder 22, balances and second pressure sensor is installed in gas storehouse 20
19, the communication module for being provided with microcontroller and being connect with the microcontroller in circuit control box 28, first pressure sensor
15, second pressure sensor 19, sound collecting device 18 and high-pressure solenoid valve 21 are connect with the microcontroller.
It should be noted that storing high pressure gas using balance gas storehouse 20, high-pressure gas well is connected using well head connecting cylinder 22
Pit shaft mouth simultaneously obtains high pressure gas, provides basis to measure wellbore effusion face by the way of air-flow explosion, high-voltage electromagnetic is arranged
The purpose of valve 21 is connection balance gas storehouse 20 and well head connecting cylinder 22, and the purpose of setting pressure limiting valve 17 is in adjustment gas storehouse 20
Gas pressure intensity is less than gas pressure intensity in well head connecting cylinder 22 using pressure limiting valve 17 by what gas pressure intensity in balance gas storehouse 20 was adjusted,
The gas for making different pressure by the opening and closing of high-pressure solenoid valve 21 forms instant airflow explosion using draught head, generates sound wave, puts down
High-pressure air source in weighing apparatus gas storehouse 20 and well head connecting cylinder 22 is all from high-pressure gas well, it can be achieved that the wellbore effusion face intervened without personnel
Continuously, automatic monitoring；Well head connecting cylinder 22 divides two-way across explosion-proof casing 31, is connected to all the way with high-pressure solenoid valve 21, convenient for
Conveying high-pressure gas in gas storehouse 20 is balanced, another way is connected to by pressure limiting valve back pressure pipe 16 with pressure limiting valve 17, and well head connecting cylinder is made
High pressure gas in 22 squeezes pressure limiting valve back pressure piston 17-4, spring 17-5 and be in compressive state, when well head connecting cylinder 22 is to putting down
In the gas storehouse 20 that weighs when conveying high-pressure gas, pressure limiting valve piston 17-6 squeezes spring 17-5, and spring 17-5 is made to restore deformation gradually, limits
The purpose that pressure limiting valve piston 17-6 in pressure valve 17 passes through cylinder 17-8 to stretch in backpressure passage 17-9 is that pressure limiting valve is avoided to carry on the back
Enter in cylinder 17-8 after pressing piston 17-4 to squeeze spring 17-5, causes high pressure gas in well head connecting cylinder 22 from outlet passageway
17-3 flows out, and cross-sectional area of the cross-sectional area less than cylinder 17-8 of inlet channel 17-2 is to limit pressure limiting valve piston 17-
The one end of 6, backpressure passage 17-9 far from cylinder 17-8 offers back pressure through-hole 17-1, and the cross-sectional area of back pressure through-hole 17-1 is less than
The cross-sectional area of backpressure passage 17-9 is to limit pressure limiting valve back pressure piston 17-4, and the cross-sectional area of inlet channel 17-2 is more than
The cross-sectional area of backpressure passage 17-9 is to when spring stress balances, ensure that air pressure is connected less than well head in balance gas storehouse 20
Air pressure in cylinder 22, provides reliable draught head, reliable and stable, using effect is good for instant airflow explosion；In addition, moment occurs
When air-flow explosion, balance high pressure gas in gas storehouse 20 securely and reliably, can be convenient for by the outlet passageway 17-3 discharges of pressure limiting valve 17
Wellbore effusion face continuously monitors.
The purpose that exhaust emissions mechanism is arranged is in order to which the high pressure exhaust gas for generating multiple explosion is transmitted to life after decompression
It is continuing in production pipeline 4, energy-saving and emission-reduction, environment is not generated and is polluted, in the present embodiment, the tail gas dump valve 1 is unidirectional
Valve enables gas in balance gas storehouse 20 to be released quickly against in production flow line 4, recycle, and the gas in production flow line 4 then by
Barrier, cannot be redirected back by tail gas dump valve 1 in balance gas storehouse 20 makes pressure rise in balance gas storehouse 20, and monitoring is avoided to fill
Setting can not be tested.
In the present embodiment, the sound collecting device 18 is microphone.
In the present embodiment, power interface 29 and communication interface 30, solar power generation mould are offered on the explosion-proof casing 31
The output end of block is powered by power interface 29 for circuit control box 28, and outer computer passes through communication interface 30 and the communication
Module connects.
In actual use, often in the wild due to high-pressure gas well, alternating current or often of high cost using battery powered is arranged,
It is unfavorable for safeguarding, and solar energy is a kind of clean energy resource, is suitable for wild environment, is explosion-proof monitoring using solar electrical energy generation module
Executing agency powers, and cleanliness without any pollution can also be used for a long time, and effect is good.
In the present embodiment, the second method that the well head connecting cylinder 22 passes through first flange disk and the high-pressure gas well pit shaft mouth
Blue disk is fixedly connected, and is sealed by sealing ring 23 between the first flange disk and the second flange disk.
In the present embodiment, the pressure limiting valve back pressure piston 17-4 is towards on the end face of spring 17-5 or pressure limiting valve piston 17-6
Third pressure sensor is installed on towards the end face of spring 17-5.
It should be noted that in pressure limiting valve back pressure piston 17-4 towards on the end face of spring 17-5 or pressure limiting valve piston 17-6
The purpose that third pressure sensor is installed on towards the end face of spring 17-5 is acquisition spring 17-5 stress, when spring 17-5 stress
When balance, pressure in balance gas storehouse 20 can be obtained by stress balance formula, wherein well head connecting cylinder 22 connects with high-pressure gas well
It is logical, therefore pressure is equal with pressure in high-pressure gas well in well head connecting cylinder 22, can obtain high-pressure gas well internal pressure by detecting in advance
By force, it is known quantity to make pressure in well head connecting cylinder 22.
A kind of high-pressure gas well wellbore effusion face automatic monitoring method as shown in Figure 3, includes the following steps：
Step 1: the installation of automated watch-keeping facility, process are as follows：
The installation of step 101, explosion-proof monitoring executing agency：First flange disk is installed on the end face of well head connecting cylinder 22,
Well head connecting cylinder 22 is fixedly connected by first flange disk with the second flange disk of the high-pressure gas well pit shaft mouth, first method
It is sealed by sealing ring 23 between blue disk and the second flange disk, then by one end of tail gas connecting tube 2 and outlet passageway 17-3
Connection, the other end of tail gas connecting tube 2 is connected to production flow line 4, close to the one of outlet passageway 17-3 in tail gas connecting tube 2
End installation tail gas dump valve 1, close to one end of production flow line 4 installation tail gas pressure reducing valve 3 in tail gas connecting tube 2；
The communication of step 102, explosion-proof monitoring executing agency：Communication interface 30 is opened up on explosion-proof casing 31, and outside is counted
Calculation machine is connect by communication interface 30 with the communication module；
The power supply of step 103, explosion-proof monitoring executing agency：Power interface 29 is opened up on explosion-proof casing 31, utilizes the sun
Energy electricity generation module is the power supply of explosion-proof monitoring executing agency, and the output end of solar electrical energy generation module is connect with power interface 29,
Power supply is provided for circuit control box 28；
Step 2: balance gas storehouse air inlet, process are as follows：
Step 201, the high-pressure ball valve for opening the installation of high-pressure gas well well tube port position, open simultaneously high-pressure solenoid valve 21, will be high
The high pressure gas calmed the anger in well is delivered to well head connecting cylinder 22, and then is delivered in balance gas storehouse 20；
Step 202, using pressure limiting valve back pressure piston 17-4 towards on the end face of spring 17-5 or pressure limiting valve piston 17-6 courts
The third pressure sensor installed on the end face of spring 17-5 acquires the stress of spring 17-5 in real time, when third pressure passes
When the data of sensor acquisition are zero, according to formulaObtain gas pressure intensity P in balance gas storehouse 202, unit MPa,
And high-pressure solenoid valve 21 is closed, balance gas storehouse 20 terminates air inlet, wherein P1For gas pressure intensity and P in well head connecting cylinder 221>P2,
Unit is MPa, S1For the cross-sectional area of pressure limiting valve back pressure piston 17-4, unit m2, S2It is pressure limiting valve piston 17-6 far from spring
The end face cross-sectional area and S of the one end 17-52>S1, unit m2；
Step 3: the generation of air-flow explosion and the recycling of tail gas：Microcontroller controls high-pressure solenoid valve 21 and opens, by well head
In connecting cylinder 22 in high pressure gas abrupt release to balance gas storehouse 20, high-pressure solenoid valve 21 is closed, due to gas in balance gas storehouse 20
Air pressure is low in pressure ratio well head connecting cylinder 22, and draught head forms instant airflow explosion at this time, generates sound wave, is propagated to deep wellbore,
Meanwhile the high pressure gas being discharged into balance gas storehouse 20 squeezes pressure limiting valve piston 17-6, and then pressure limiting valve piston 17-6 squeezes bullet
Spring 17-5 compressions, the high pressure gas being discharged into balance gas storehouse 20 are emitted into tail gas connection through cylinder 17-8 from outlet passageway 17-3
Pipe 2, the high pressure gas are recycled to after the decompression of tail gas pressure reducing valve 3 in production flow line 4；
Step 4: high-pressure gas well wellbore effusion face monitors：Sound collecting device 18 receives reflected through wellbore effusion face
Back wave, and the data of reception are gone out to be transmitted to microcontroller, microcontroller calculates the depth in wellbore effusion face using the time difference
Degree；
Step 5: step 3 is repeated several times to step 4, it can be achieved that the multiple monitoring in high-pressure gas well wellbore effusion face；
Step 6: the pressure release and dismounting of explosion-proof monitoring executing agency：Pre-set the pressure of first pressure sensor 15 and second
The safe pressure threshold value of force snesor 19 closes the high-pressure ball valve of high-pressure gas well well tube port position, tail gas connecting tube 2 is led to from outlet
It is disassembled on road 17-3, opens high-pressure solenoid valve 21, well head connecting cylinder 22 and balance 20 mesohigh gas of gas storehouse are logical from outlet
Road 17-3 is discharged, and utilizes the pressure in the first pressure sensor 15 installed on well head connecting cylinder 22 in real time acquisition well head connecting cylinder 22
Power, meanwhile, using the pressure in the second pressure sensor 19 installed in balance gas storehouse 20 in real time acquisition balance gas storehouse 20, when the
When the pressure data that one pressure sensor 15 and second pressure sensor 19 acquire is not more than safe pressure threshold value, realize that well head connects
The pressure release of connect cylinder 22 and balance gas storehouse 20, and then realize the pressure release of explosion-proof monitoring executing agency；Then explosion-proof monitoring is executed into machine
Structure is disassembled from high-pressure gas well pit shaft mouth.
The present invention into balance gas storehouse 20 and well head connecting cylinder 22 using high-pressure gas well in use, provide high-pressure air source, completely
The wellbore effusion face automatic monitor for continuously that foot is intervened without personnel ensures air pressure in balance gas storehouse 20 using spring 17-5 stress balances
Less than air pressure in well head connecting cylinder 22, quickly it is opened and closed by controlling high-pressure solenoid valve 21, realizes multiple explosion, obtain multiple wells
Cylinder hydrops face monitoring data often balance high pressure gas extra in gas storehouse and are emitted into tail gas company by pressure limiting valve 17 after separate explosion
In take over 2, which is recycled in production flow line 4 after the decompression of tail gas pressure reducing valve 3 and is continuing with, and energy-saving and emission-reduction utilize
First pressure sensor 15 can detect pressure in well head connecting cylinder 22, utilize the detectable balance gas storehouse 20 of second pressure sensor 19
Interior pressure avoids the dismounting with pressure of explosion-proof monitoring executing agency, ensures operating personnel's personal safety, realizes high pressure, contains corrosivity
The wellbore effusion face for the natural gas well without personnel intervene under gaseous environment monitors continuously, automatically, greatly reduces operating cost,
Improve operating efficiency and safety.
The above is only presently preferred embodiments of the present invention, is not imposed any restrictions to the present invention, every according to the present invention
Technical spirit changes any simple modification, change and equivalent structure made by above example, still falls within skill of the present invention
In the protection domain of art scheme.
Claims (7)
1. a kind of high-pressure gas well wellbore effusion face automated watch-keeping facility, it is characterised in that：Including being mounted on high-pressure gas well pit shaft mouth
Explosion-proof monitoring executing agency and connect for the tail gas to production flow line (4) emission with the explosion-proof monitoring executing agency
Discharging mechanism；The explosion-proof monitoring executing agency includes the Balance Air of explosion-proof casing (31) and setting in explosion-proof casing (31)
The inlet end of storehouse (20) and circuit control box (28), balance gas storehouse (20) is equipped with high-pressure solenoid valve (21), balance gas storehouse (20)
Outlet side installation limited valve (17), well head connecting cylinder (22) divides two-way across explosion-proof casing (31), all the way with high-voltage electromagnetic
Valve (21) is connected to, and another way is connected to by pressure limiting valve back pressure pipe (16) with pressure limiting valve (17)；It is equipped in well head connecting cylinder (22)
Sound collecting device (18), pressure limiting valve (17) include the cylinder (17-8) of valve body (17-7) and setting in valve body (17-7), cylinder
The one end of (17-8) offers backpressure passage (17-9), and the other end of cylinder (17-8) offers inlet channel (17-2), air inlet
The cross-sectional area in channel (17-2) is less than the cross-sectional area of cylinder (17-8), and the cross-sectional area of inlet channel (17-2) is more than back pressure
The cross-sectional area in channel (17-9), pressure limiting valve piston (17-6) are stretched to across cylinder (17-8) in backpressure passage (17-9), the back of the body
Setting limited valve back pressure piston (17-4) in pressure passageway (17-9), pressure limiting valve back pressure piston (17-4) by spring (17-5) with
Pressure limiting valve piston (17-6) connects, and the one end of backpressure passage (17-9) far from cylinder (17-8) offers back pressure through-hole (17-1),
The cross-sectional area of back pressure through-hole (17-1) is less than the cross-sectional area of backpressure passage (17-9), is offered on the side wall of cylinder (17-8)
Outlet passageway (17-3), pressure limiting valve back pressure pipe (16) are connected to back pressure through-hole (17-1), balance gas storehouse (20) outlet side with into
Gas channel (17-2) is connected to；
The exhaust emissions mechanism includes the tail gas connecting tube (2) of connection outlet passageway (17-3) and production flow line (4), and tail gas connects
It takes over one end on (2) close to outlet passageway (17-3) and tail gas dump valve (1) is installed, close to production in tail gas connecting tube (2)
One end of pipeline (4) is equipped with tail gas pressure reducing valve (3)；
First pressure sensor (15) is installed on well head connecting cylinder (22), second pressure sensing is installed in balance gas storehouse (20)
Device (19), the interior communication module for being provided with microcontroller and being connect with the microcontroller of circuit control box (28), first pressure
Sensor (15), second pressure sensor (19), sound collecting device (18) and high-pressure solenoid valve (21) with the microcontroller
Connection.
2. a kind of high-pressure gas well wellbore effusion face described in accordance with the claim 1 automated watch-keeping facility, it is characterised in that：The tail
Gas dump valve (1) is check valve.
3. a kind of high-pressure gas well wellbore effusion face described in accordance with the claim 1 automated watch-keeping facility, it is characterised in that：The sound
Wave collector (18) is microphone.
4. a kind of high-pressure gas well wellbore effusion face described in accordance with the claim 1 automated watch-keeping facility, it is characterised in that：It is described anti-
Power interface (29) and communication interface (30) are offered on quick-fried shell (31), the output end of solar electrical energy generation module is connect by power supply
Mouth (29) is that circuit control box (28) is powered, and outer computer is connect by communication interface (30) with the communication module.
5. a kind of high-pressure gas well wellbore effusion face described in accordance with the claim 1 automated watch-keeping facility, it is characterised in that：The well
Mouth connecting cylinder (22) is fixedly connected by first flange disk with the second flange disk of the high-pressure gas well pit shaft mouth, first method
It is sealed by sealing ring (23) between blue disk and the second flange disk.
6. a kind of high-pressure gas well wellbore effusion face described in accordance with the claim 1 automated watch-keeping facility, it is characterised in that：The limit
Pressure valve back pressure piston (17-4) is towards on the end face of spring (17-5) or pressure limiting valve piston (17-6) is towards the end of spring (17-5)
Third pressure sensor is installed on face.
7. a kind of carrying out the method that high-pressure gas well wellbore effusion face monitors automatically, feature using device as described in claim 1
It is：This approach includes the following steps：
Step 1: the installation of automated watch-keeping facility, process are as follows：
The installation of step 101, explosion-proof monitoring executing agency：First flange disk, well are installed on the end face of well head connecting cylinder (22)
Mouth connecting cylinder (22) is fixedly connected by first flange disk with the second flange disk of the high-pressure gas well pit shaft mouth, first method
It is sealed by sealing ring (23) between blue disk and the second flange disk, then by one end of tail gas connecting tube (2) and outlet passageway
(17-3) is connected to, and the other end of tail gas connecting tube (2) is connected to production flow line (4), close to outlet in tail gas connecting tube (2)
One end installation tail gas dump valve (1) in channel (17-3), is installed in tail gas connecting tube (2) close to one end of production flow line (4)
Tail gas pressure reducing valve (3)；
The communication of step 102, explosion-proof monitoring executing agency：Communication interface (30) is opened up on explosion-proof casing (31), and outside is counted
Calculation machine is connect by communication interface (30) with the communication module；
The power supply of step 103, explosion-proof monitoring executing agency：Power interface (29) is opened up on explosion-proof casing (31), utilizes the sun
Energy electricity generation module is the power supply of explosion-proof monitoring executing agency, and the output end of solar electrical energy generation module and power interface (29) are connected
It connects, power supply is provided for circuit control box (28)；
Step 2: balance gas storehouse air inlet, process are as follows：
Step 201, the high-pressure ball valve for opening the installation of high-pressure gas well well tube port position, open simultaneously high-pressure solenoid valve (21), by high pressure
High pressure gas in gas well is delivered to well head connecting cylinder (22), and then is delivered in balance gas storehouse (20)；
Step 202, using pressure limiting valve back pressure piston (17-4) towards on the end face of spring (17-5) or pressure limiting valve piston (17-6)
The third pressure sensor installed on towards the end face of spring (17-5) acquires the stress of spring (17-5) in real time, works as third
When the data of pressure sensor acquisition are zero, according to formulaObtain balance gas storehouse (20) interior gas pressure intensity P2, single
Position is MPa, and closes high-pressure solenoid valve (21), and balance gas storehouse (20) terminates air inlet, wherein P1For well head connecting cylinder (22) interior gas
Body pressure and P1>P2, unit MPa, S1For the cross-sectional area of pressure limiting valve back pressure piston (17-4), unit m2, S2For pressure limiting valve
End face cross-sectional area and S of the piston (17-6) far from the one end spring (17-5)2>S1, unit m2；
Step 3: the generation of air-flow explosion and the recycling of tail gas：Microcontroller controls high-pressure solenoid valve (21) and opens, and well head is connected
In the interior high pressure gas abrupt release of connect cylinder (22) to balance gas storehouse (20), high-pressure solenoid valve (21) is closed, due to balancing gas storehouse
(20) interior air pressure air pressure interior than well head connecting cylinder (22) is low, and draught head forms instant airflow explosion at this time, sound wave is generated, to pit shaft
Depths is propagated, meanwhile, the high pressure gas being discharged into balance gas storehouse (20) squeezes pressure limiting valve piston (17-6), and then pressure limiting valve is lived
It fills in (17-6) and squeezes spring (17-5) compression, the high pressure gas being discharged into balance gas storehouse (20) is logical from outlet through cylinder (17-8)
Road (17-3) is emitted into tail gas connecting tube (2), which is recycled to production flow line (4) after tail gas pressure reducing valve (3) decompression
In；
Step 4: high-pressure gas well wellbore effusion face monitors：Sound collecting device (18) receives reflected anti-through wellbore effusion face
Ejected wave, and the data of reception are gone out to be transmitted to microcontroller, microcontroller calculates the depth in wellbore effusion face using the time difference；
Step 5: step 3 is repeated several times to step 4, it can be achieved that the multiple monitoring in high-pressure gas well wellbore effusion face；
Step 6: the pressure release and dismounting of explosion-proof monitoring executing agency：Pre-set first pressure sensor (15) and second pressure
The safe pressure threshold value of sensor (19) closes the high-pressure ball valve of high-pressure gas well well tube port position, by tail gas connecting tube (2) from outlet
It is disassembled on channel (17-3), opens high-pressure solenoid valve (21), well head connecting cylinder (22) and balance gas storehouse (20) mesohigh gas
Body is discharged from outlet passageway (17-3), utilizes first pressure sensor (15) the real-time production wells installed on well head connecting cylinder (22)
Pressure in mouth connecting cylinder (22), meanwhile, utilize the second pressure sensor (19) installed in balance gas storehouse (20) to acquire in real time
Balance the pressure in gas storehouse (20), when first pressure sensor (15) and the pressure data of second pressure sensor (19) acquisition not
When more than safe pressure threshold value, the pressure release of well head connecting cylinder (22) and balance gas storehouse (20) is realized, and then realize that explosion-proof monitoring is held
The pressure release of row mechanism；Then explosion-proof monitoring executing agency is disassembled from high-pressure gas well pit shaft mouth.
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| CN108678729B (en) | 2023-07-04 |
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