CN103912226B - Intelligent self-loopa well well washing equipment - Google Patents
Intelligent self-loopa well well washing equipment Download PDFInfo
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- CN103912226B CN103912226B CN201310001014.0A CN201310001014A CN103912226B CN 103912226 B CN103912226 B CN 103912226B CN 201310001014 A CN201310001014 A CN 201310001014A CN 103912226 B CN103912226 B CN 103912226B
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Abstract
The present invention provides a kind of intelligent self-loopa well well washing equipment, go out well liquid processing system under the control of washing well process intelligent control process part by after flushing fluid desanding in its flushing fluid circular processed portion, impurity separation is carried out by settling tank again, and the well liquid that goes out after impurity is separated passes through coarse filter coarse filtration and fine filter refined filtration, to clean flushing fluid, working fluid dynamical system in its flushing fluid circular processed portion adjusts the rotating speed of its engine under the control of the washing well process intelligent control process part, it is changed into high pressure working fluid by flushing pump using the flushing fluid after by cleaning as working fluid to export, realize well well-flushing.The intelligent self-loopa well well washing equipment is vehicular well-washing truck; with to well-flushing overall process progress intelligent control function; realize that washing well process control effectively according to different types of well, different well-flushing stages, protect water injection well, improve water injection well well-flushing quality.
Description
Technical field
The present invention relates to water injection well in oil fields clean-out service equipment, especially relates to a kind of intelligent self-loopa well well-flushing
Equipment.
Background technology
Water injection well well-flushing generally can be divided into normal well, go out Sha Jing, under-injected well three types.Different types of well well-flushing requirement
It is variant.Normal water injection well well-flushing is a point three phases well-flushing.1st, the stage is not leaked in micro- spray：Well head open flow gate is controlled, makes well head
Oil pressure is less than Pneumatic pressure 1MPa, regulation well-flushing discharge capacity to 25m3/ h, well-flushing 2h, fuel injection quantity control is in 3m3/h.2nd, well-flushing rank is balanced
Section：Well head open flow gate is controlled, is equal to oil pressure and starts pressure, regulation well-flushing discharge capacity to 35 m3/ h, well-flushing 2h.3rd, stably wash
The well stage：Keep well head oil pressure constant, regulation well-flushing discharge capacity to 40m3/ h, well-flushing 2h.Sand output well well-flushing is according to sand production in oil
The characteristics of, it is steady to control wellhead venting valve, well head oil pressure is slightly above started pressure, regulation well-flushing discharge capacity to 20 m3/h—
30m3/ h, well-flushing 6h.Under-injected well well-flushing is fine and close according to oil reservoir, steady to control wellhead venting gate the characteristics of being not easy to shake out, and is made
Oil pressure closing well emptying 1h, then starts carwash, regulation well-washing truck discharge capacity to 40m less than pressure is started3/ h, well-flushing 6h.
And there is problems with existing common self-circulation well flushing truck：
Cause to involve the pressure on stratum and shadow when the 1, opening before manual control well-flushing, closing well well-flushing into and out of gate
Ring big.Particularly note is poly- turns water drive and sand output well is very sensitive to pressure change, and the suddenly change of pressure often causes stratum to go out
Sand is told poly-, causes well-flushing to fail.
2nd, washing well process pressure and discharge capacity manual control, it can not meet that different water injection wells takes different technology for washing well to set
The requirement of meter.According to water injection well technology for washing well code, washing well process will take different measures, emphasis according to different type hole condition
Pressure, discharge capacity, time control are carried out to process.Meanwhile the well washing effect to have reached, it is necessary to improve the miscellaneous of well-flushing flow
Thing elimination effect.Water injection well for easily shaking out or going out polymer, it is desirable to carry out the well-flushing that builds the pressure, prevent the fluctuation of pressure, cause
Water injection well shakes out, it is serious to go out polymer, injures water injection well and downhole tool.Operation requires：Sleeve pipe well-flushing gate is first opened, then it is crack
Gate is vented, pays close attention to sluice gate afterwards, last fully open emptying gate, reverse-order after well is washed and falls positive injection, avoid stratum as far as possible
Pressure oscillation.At present, the control process manually controls entirely, specific control process：One man operation well-washing truck well-flushing plunger pump, control
The pressure and discharge capacity of well-flushing plunger pump output processed, change well-flushing plunger pump gear by operating personnel and control engine throttle
Size obscures realization, can not realize and is precisely controlled.Particularly borehole pressure change is rapid, by manually within the extremely short time
Making a response can not realize at all.
3rd, the starting under load of well-flushing plunger pump influences equipment life.Before well-flushing plunger pump startup, open well-flushing plunger and pump out
Port strobe and well head inlet gate, highly pressurised liquid enter well-flushing plunger pump exhaust manifold, make the startup with pressure of well-flushing plunger pump.
When the 4th, causing borehole pressure higher than injection fluid pressure due to well-flushing plunger pump exhaust manifold failure, well is easily caused
Interior liquid returns out from liquid injection end, easily causes borehole pressure fluctuation, formation damage, causes well-flushing to fail.
5th, the pollutants such as the poly- polymer turned in water drive well flushing fluid of note can not be handled.Polymer plugging in flushing fluid is washed
The handling process of well car.
For this we have invented a kind of new intelligent self-loopa well well washing equipment, solves above technical problem.
The content of the invention
It is an object of the invention to provide a kind of special intelligent combined using sensing technology, PLC intelligent control technologies
Type self-loopa well well washing equipment.
The purpose of the present invention can be achieved by the following technical measures：Intelligent self-loopa well well washing equipment, the intelligence
Type self-loopa well well washing equipment includes flushing fluid circular processed portion and washing well process intelligent control process part, the flushing fluid
Circular processed portion includes well liquid processing system and working fluid dynamical system, and this goes out well liquid processing system and is connected to the well-flushing mistake
Journey intelligent control process part, and under the control of the washing well process intelligent control process part by flushing fluid desanding after, then lead to
Cross settling tank and carry out impurity separation, and go out well liquid by coarse filter coarse filtration and fine filter refined filtration after impurity is separated, with cleaning
Flushing fluid, the working fluid dynamical system is connected to the washing well process intelligent control process part, and is intelligently controlled in the washing well process
The rotating speed of its engine is adjusted under the control of process part processed, is turned using the flushing fluid after cleaning as working fluid by flushing pump
It is changed into the output of high pressure working fluid, realizes well well-flushing.
The purpose of the present invention can be also achieved by the following technical measures：
The flushing fluid circular processed portion also includes well liquid fluid infusion system, and this goes out well liquid fluid infusion system and is connected to the well-flushing
Intelligent Process Control process part goes out well liquid processing system with this, and under the control of the washing well process intelligent control process part
Go out the supply of well liquid processing system clearly from well main line to this before well-flushing by opening the make-up valve in well liquid fluid infusion system
Clean circulation fluid, when occurring well outer circulation liquid deficiency in washing well process, open the make-up valve and go out well liquid from the well main line to this
Processing system feedwater supplement.
The flushing fluid circular processed portion also includes well liquid control system, and this goes out well liquid control system and is connected to the well-flushing
Intelligent Process Control process part goes out well liquid processing system with this, and this goes out the outlet end that well liquid control system is connected to well, will
Go out well liquid and be transferred to this to go out well liquid processing system, and monitor flushing fluid and go out well pressure value and flow signal, in washing well process intelligence
The pressure and discharge capacity of well liquid are adjusted out under the control of control processing section.
This, which goes out well liquid control system, includes pressure sensor, ecp choke valve, flow sensor and safety valve, is flowing
When journey blocks or system pressure exceedes authorized pressure, the safety valve is opened, and to carry out system decompression, the pressure sensor detects
The pressure value of well liquid, and the pressure value is transferred to the washing well process intelligent control process part, the flow sensor detection stream
Signal is measured, and the flow signal is transferred to the washing well process intelligent control process part, washing well process intelligent control processing
Part controls the unlatching of the ecp choke valve, to adjust out the pressure of well liquid and discharge capacity.
The settling tank includes settling tank one-level chamber, settling tank secondary chamber and settling tank three-level chamber, the settling tank one-level chamber with
Two quasi-sovereign sedimentation chambers, that will be remained in liquid are divided into by the dividing plate of half tank body height between the settling tank secondary chamber
Grain solid matter gear separates in the settling tank one-level intracavitary, is totally-enclosed between the settling tank secondary chamber and the settling tank three-level chamber
Dividing plate, to control solid granulates and suspension to enter the settling tank three-level chamber, the settling tank secondary chamber and the settling tank three-level chamber
Between liquid stream be circulated through connecting pipeline to complete, there is secondary chamber liquid level sensor, this two in the settling tank secondary chamber
Level chamber liquid level sensor detects the liquid level of the settling tank secondary chamber, and the liquid level is transferred into washing well process intelligence
Control processing section, the washing well process intelligent control process part control the communicating valve on the connecting pipeline according to the liquid level
Connecting and disconnecting.
This, which goes out well liquid processing system, also includes secondary chamber emptying and overflow line, the emptying of three-level chamber and overflow line and overflow
Water storage tank, secondary chamber emptying and overflow line and the three-level chamber empty and overflow line sinks the settling tank secondary chamber with this
The liquid of overflow is transported to the overflow water storage tank in drop tank three-level chamber.
This, which goes out well liquid processing system, also includes settling tank one-level chamber blowoff valve, settling tank secondary chamber blowoff valve and settling tank three
Level chamber blowoff valve, to empty the debris in the settling tank one-level chamber, the settling tank secondary chamber and the settling tank three-level chamber.
This, which goes out well liquid processing system, also includes settling tank backwash pipeline, recoil flow master control valve and recoil flow sedimentation
Tank washing control valve, settling tank backwash pipeline are connected on the flushing pump, are being opened the recoil flow master control valve and are being somebody's turn to do
Recoil flow settling tank washing control valve when, using highly pressurised liquid caused by the flushing pump cleans the settling tank one-level chamber, this is heavy
Debris in tank secondary chamber and the settling tank three-level chamber drops.
This, which goes out well liquid processing system, also includes flushing fluid storage tank, and the front end of the flushing fluid storage tank is connected to the coarse filtration
Device, by going out after coarse filtration, well liquid is stored and precipitation purification, the liquid that the fine filter is connected to the flushing fluid storage tank are defeated
Go out end, there is recoil cleaning function, and filter core is done using laser slotted screen pipe, slot width according to the requirement of well impurity screening and
It is fixed.
The flushing fluid circular processed portion also includes working fluid detecting system, and the working fluid detecting system is located at this and goes out well liquid
Between processing system and the working fluid dynamical system, to be detected to working fluid quality.
The working fluid detecting system includes cleaning flushing fluid bypass replenishment valve, flow sensor and working fluid detection sampling lock
Door, the working fluid detecting system detect the sampling of sampling gate progress working fluid, cleaning flushing fluid bypass by the working fluid
Replenishment valve is used for the flushing fluid for supplementing cleaning, and the flow sensor is connected to the washing well process intelligent control process part, and will
The flow of its working fluid detected is transferred to the washing well process intelligent control process part, to adjust the rotating speed of the engine.
The working fluid dynamical system also includes engine throttle controller, speed probe, working fluid pressure sensor, peace
Full valve, plunger pump emptying control valve and plunger pump emptying choke valve, the speed probe transmit the tach signal of the engine
The washing well process intelligent control process part is given, the washing well process intelligent control process part passes through the hair according to the tach signal
Motivation throttle control, the engine speed is adjusted, the safety valve controls the pressure of the flushing pump output liquid, plunger pump row
Empty control valve and plunger pump emptying choke valve in the flushing pump toward before injecting flushing fluid in well, using caused by the flushing pump
Highly pressurised liquid is emptied to the air of well-flushing pump output terminal, and the working fluid pressure sensor monitoring is somebody's turn to do from what the flushing pump exported
Pressure value of the high pressure working fluid before well is entered, and the pressure value is transferred to the washing well process intelligent control process part,
The washing well process intelligent control process part controls the engine throttle controller according to the pressure value, with adjust well-flushing discharge capacity or
Alarm signal is sent, cuts off engine power.
The flushing fluid circular processed portion also includes working fluid control system, and the working fluid control system is used to prevent this from washing
Liquid returns out and causes flushing pump difficulty in starting with pressure and protection well in well when well pump pressure is less than borehole pressure.
The working fluid control system includes check valve, high pressure cock valve, and by-passing valve connects well head pipeline with working fluid, the list
The high pressure working fluid for exporting the flushing pump to valve enters in well, does not allow liquid in well to return out, high pressure cock valve control
The break-make of the high pressure working fluid, the by-passing valve are emptying valve, and working fluid connection well head pipeline is connected with well head joint, realized
The injection of the high pressure working fluid.
The washing well process intelligent control process part includes data setup module, the transmission of data disaply moudle and data with
Processing module, the data setup module be used for flushing parameter is set, the data disaply moudle be used for man-machine interactive system setting,
Inquiry and display, transmission and the processing module of the data are used for data storage, report printing and data input and output.
The washing well process intelligent control process part includes manual control and automatically controls handover module and password protection mould
Block, the switching and operation that the manual control carries out manual control and automatically controlled with automatically controlling handover module to be used for, the password
Protection module is used to prevent illegal deletion or overwrite user program.
Intelligent self-loopa well well washing equipment in the present invention, to hyposmosis tight sand and loose sand etc. differently
Water injection well washing well process pressure, discharge capacity and the intelligent control of time of matter structure.Intelligent well-washing truck performance more meets different rocks
Layer and hole condition become more meticulous technology for washing well technical requirements, realize water injection well and downhole tool automatic protection functions, solve commonly from following
Caused by ring well-washing truck handles injection well and sand output well ability, and washing well process can not carry out delicate pressure, flow controls
The problem of well-flushing is poorly efficient.Specifically, it is exactly that intelligence control system is designed according to technology for washing well technology by water flooding well washing truck
It is required that micro- water supply for telling stage, equilibrium stage and stabilization sub stage, fluid infusion, well-flushing pressure and flow, well-flushing in washing well process are returned
Hydraulic coupling and flow, settling tank liquid level, the discharge capacity of well-flushing plunger pump and pressure, engine speed and power and filter shape
Condition etc. is monitored, controlled, and realizes water injection well intellectuality well-flushing.The intellectual water flooding well washing truck system of the present invention, is improved
The control function of strict implement construction technology in oil field water well washing well process, improve well-washing truck water treatment ability, automatic protection
Well and downhole tool, improve well well-flushing success rate.
Brief description of the drawings
Fig. 1 is a specific implementation of flushing fluid circular processed portion in intelligent self-loopa well well washing equipment of the invention
The structure chart of example；
The one of washing well process intelligent control process part is specific in the intelligent self-loopa well well washing equipment of Fig. 2 present invention
The theory diagram of embodiment；
Fig. 3 is the structure chart of the specific embodiment for going out well liquid fluid infusion system in Fig. 1；
Fig. 4 is the structure chart of the specific embodiment for going out well liquid control system in Fig. 1；
Fig. 5 is the structure chart of the specific embodiment for going out well liquid detecting system in Fig. 1；
Fig. 6 is the structure chart of the specific embodiment for going out well liquid processing system in Fig. 1；
Fig. 7 is the structure chart of a specific embodiment of the working fluid detecting system in Fig. 1；
Fig. 8 is the structure chart of a specific embodiment of the working fluid dynamical system in Fig. 1；
Fig. 9 is the structure chart of a specific embodiment of the working fluid control system in Fig. 1.
Embodiment
For enable the present invention above and other objects, features and advantages become apparent, it is cited below particularly go out preferable implementation
Example, and coordinate institute's accompanying drawings, it is described in detail below.
The intelligent self-loopa well well washing equipment of the present invention includes：Flushing fluid circular processed portion and washing well process intelligence
Control processing section two large divisions.Wherein, flushing fluid circular processed portion mainly includes intelligent well well washing equipment well-flushing stream
Journey facility；Washing well process intelligent control process part mainly include with the controller of PLC programming Controls, sensor, actuator and
Software systems part.Two parts, which cooperate, completes self-loopa well washing well process.
As shown in figure 1, Fig. 1 is flushing fluid circular processed portion in intelligent self-loopa well well washing equipment of the invention
The structure chart of one specific embodiment.Flushing fluid circular processed portion includes 7 parts：Go out well liquid fluid infusion system 1, go out well liquid
Control system 2, go out well liquid detecting system 3, go out well liquid processing system 4, working fluid detecting system 5, working fluid dynamical system 6, enter
Well liquid control system 7.
As shown in figure 3, Fig. 3 is the structure chart of the specific embodiment for going out well liquid fluid infusion system 1 in Fig. 1.Go out well liquid benefit
Liquid system 1 includes make-up valve source of the gas 1-1, make-up valve control line 1-2, fluid infusion valve actuator 1-3, fluid infusion pipeline interface 1-4, fluid infusion
Valve 1-5 and fluid infusion pipeline 1-6.Go out well liquid fluid infusion system 1 and be connected to washing well process intelligent control process part, and in washing well process
Under the control of intelligent control process part well washing equipment supplying clean circulation fluid, Ke Yishi are given before well-flushing from well main line in advance
It is synchronous with well head injection liquid that existing well head goes out liquid, it is ensured that liquid synchronous circulating inside and outside well, prevents first well head from going out liquid, reinjects mistake in well
There is deficit in well and shakes out, tells polymer in journey；Meanwhile when occurring well outer circulation liquid deficiency in washing well process, main line can be passed through
Water is supplemented.
The main line that fluid infusion pipeline interface 1-4 is connected to well carrys out water pipeline, is connected by union, for before well-flushing to tank body
In the necessary cleaning liquid of interior supply or washing well process the amount of liquid that returns out of well less than injection well liquid supply rate when, beat in time
Make-up valve 1-5 is opened, to settling tank 4-19 supplying clean liquid, realizes that sedimentation jar liquid surface is in a basic balance.Make-up valve 1-5 be by
The pressure-resistant 15Mpa ecps choke valve of PLC programming Controls, in figure, make-up valve source of the gas 1-1 is 0.6~0.8Mpa of pressure pressure
Contracting air source of the gas, the compressed air provide the power for opening make-up valve 1-5, the make-up valve control of PLC intelligent control centers connection
Line 1-2 sends fluid infusion signal and is transmitted to fluid infusion valve actuator 1-3, and make-up valve source of the gas 1-1 supplies ecp make-up valve compressed air,
Make-up valve 1-5 work is promoted, realizes the degree that make-up valve 1-5 is opened, and make-up valve -5 is opened（That is circulation area）PLC can be passed through
Intelligence control system is configured, and sets the opening ratio of make-up valve, the degree of the make-up valve unlatching according to setting is realized, by liquid
Body enters settling tank one-level chamber 4-1 from fluid infusion pipeline 1-6, gives settling tank 4-19 feed flows；Conversely, closing make-up valve 1-5, stop mending
Liquid.
As shown in figure 4, Fig. 4 is the structure chart of the specific embodiment for going out well liquid control system 2 in Fig. 1.Go out well liquid control
System 2 processed includes pressure sensor circuit 2-1, pressure sensor 2-2, goes out well liquid pipe joint 2-3, ecp choke valve 2-
4, ecp throttling valve actuator 2-5, ecp choke valve source of the gas 2-6, ecp throttle valve control circuit 2-7, stream
Quantity sensor 2-8, flow sensor circuit 2-9, go out well liquid Trunk Line 2-10, go out well liquid detection by-pass line 2-11, go out well liquid pole
Limits pressure controls service main 2-12, hydrocyclone feed liquor pipeline 2-13, safety valve 2-14, safety valve limiting pressure tapping line
2-15.Go out well liquid control system 2 to be connected to washing well process intelligent control process part and go out well liquid processing system 4, go out well liquid control
System 2 processed is connected to the outlet end of well, will go out well liquid and be transferred to this to go out well liquid processing system 4, and monitor flushing fluid and go out well pressure
Force value and flow signal, the pressure and discharge capacity of well liquid are adjusted out under the control of washing well process intelligent control process part.
Go out well liquid control system 2 by go out well liquid pipe joint 2-3 be connected to the outlet end of well will according to positive and negative well-flushing
Ask, be connected to during positive well-flushing on the union of oil pipe gate connection, be connected on the union of sleeve gate connection during backwash.Liquid in well
Body mainly enters hydrocyclone entrance 4-3 after returning out from hydrocyclone feed liquor pipeline 2-13；In flow blocking or system pressure
When power exceedes authorized pressure, liquid flows through safety valve 2-14, and safety valve 2-14 is opened, and into settling tank one-level chamber 4-1, liquid leads to
Cross safety valve 2-14 and be directly entered system decompression, ensure construction safety；To compare well washing effect, well liquid is provided with out on pipeline
By-pass line 2-11 is detected, well liquid is transferred out and provides well liquid detecting system 3.Going out well liquid control system 2, emphasis is according to well-flushing work
Skill requires to set flushing fluid to go out well pressure value（That is back pressure）, well liquid pressure stability is kept out, protects pit shaft and downhole tool.Go out well
Liquid control system 2 is mainly provided with pressure sensor 2-2, and detection well head goes out the instantaneous pressure value of liquid, and by the instantaneous pressure of collection
Force signal is delivered to control centre PLC by pressure sensor circuit 2-1, is easy to implement out well pressure control；In the system also
There is provided pressure-resistant 15Mpa ecps choke valve 2-4, as the engine 6-4 timing of throttle one, ecp choke valve 2-4
Well pressure is adjusted out by controlling the aperture of choke valve；When maintenance well-flushing circulation fluid outlet pressure（Pressure sensor 2-2）One
, it is necessary to increase well-flushing discharge capacity, then control centre, which sends, improves engine speed instruction, increases engine throttle, presses simultaneously for timing
According to the pressure-resistant 15Mpa ecps choke valve 2-4 of proportion adjustment, the control of pressure and discharge capacity is realized.Meanwhile also set within the system
Flow sensor 2-8 is put.The instantaneous flow rate signal detected is constantly passed to by PLC controls by flow sensor circuit 2-9
System processed, as the foundation for adjusting pressure-resistant 15Mpa ecps choke valve 2-4 apertures size and regulation engine throttle size.
Ecp throttle valve control circuit 2-7 is connected with control centre PLC, the unlatching of the gate, is closed, and aperture size by
Control centre PLC control signal control, after the gate receives control signal, ecp choke valve 2-4 gas circuit is opened,
Ecp choke valve 2-4 is opened or closed according to a certain percentage, and poised state is maintained to adjust well head fluid pressure.Electricity
The compressed air that pneumatic throttle source of the gas 2-6 is 0.6~0.8Mpa of pressure is controlled, the source of the gas is pressure-resistant 15Mpa ecp section
Flow valve 2-4 and compressed air is provided, ecp throttle valve control circuit 2-7 goes out what well pressure sensor 2-8 was detected by collection
Pressure controling signal is transferred to PLC intelligence control systems by pressure value by flow sensor control circuit 2-9, by detected value with
The range of pressure fluctuations contrast of setting, exports out well liquid flow control signal according to the difference of the two, gives ecp choke valve
Actuator 2-5, ecp throttle valve actuator 2-5 according to the pressure-resistant 15Mpa ecps throttling of certain travel proportional value control
Valve 2-4 aperture.It is well liquid flow line to go out well liquid Trunk Line 2-10, and the pipeline directly connects with hydrocyclone entrance 4-3
Connect.Go out well liquid intelligent control to be also embodied in when passing in and out the liquid imbalance of well, PLC control system passes by going out well liquid flow
The flow value contrast of sensor 2-8 and working fluid flow sensor 5-3 detections, it is determined that being increase discharge capacity or reducing discharge capacity.When need
When increasing discharge capacity, PLC control system sends lifting engine rotational speed signal, increases engine 6-4 throttles.The control signal by
Engine oil gate control circuit 6-2 is transferred to engine throttle controller 6-3, increases engine 6-4 throttles.Turn when needing to reduce
When fast, PLC control system sends reduction engine rotational speed signal, reduces engine 6-4 throttles.The control signal is by engine oil
Gate control circuit 6-2 is transferred to engine throttle controller 6-3, reduces engine 6-4 throttles.In engine 6-4 Throttle Opening Controls
During, first it is to be understood that the transient speed of engine, the rotating speed passes through the speed probe 6-5 that is fixed on engine 6-4
To realize detection.The transient speed of detection passes to PLC control system along engine speed sensor circuit 6-6 in time, as
Increase and decrease the foundation of engine speed size.
In washing well process, when entering well discharge capacity and being less than well discharge capacity, the liquid in settling tank increases, and liquid level, which rises to, to be set
When fixed high-order, system reduces the aperture of regulating valve automatically, reduces well head water yield；When entering well discharge capacity and being more than well discharge capacity, wash
Liquid in canister is reduced, and when liquid level drops to setting status, system increases the aperture of regulating valve automatically, increases well head water outlet
Amount, if can not now meet liquid level requirement, it is well-flushing tank fluid infusion that system, which automatically turns on make-up valve, reaches a setting high position, fluid infusion
Valve is closed.
As shown in figure 5, Fig. 5 is the structure chart of the specific embodiment for going out well liquid detecting system in Fig. 1.Go out well liquid detection
System 3 includes sample tap 3-1, goes out well liquid water quality detection sampling gate 3-2, goes out well liquid water quality detection regulating gate 3-3 and goes out well
Hydraulic control water quality detection pipeline 3-4.Go out well liquid detecting system 3 and be connected to out well liquid processing system 4, for detecting well liquid water
Matter.
It is well liquid control water quality detection pipeline 3-4 to go out the Trunk Line of well liquid detecting system 3, has well liquid water quality on Trunk Line
Regulating gate 3-3 is detected, the gate is primarily implemented in the liquid with debris for detecting to accumulate first in blowdown vessel before well liquid water quality
Body, it is to be opened go out well liquid water quality detection regulating gate 3-3 circulating liquids after, open out well liquid water quality detection sampling gate 3-2, use
Sampling cup extracts well liquid sample liquid at sample tap 3-1, realizes out well liquid water quality detection.The sampling inspection results are mainly with entering well
Liquid detection sampling gate 5-4 sampling liquid is contrasted, to confirm well washing effect.In the present invention, the sampling liquid water quality at two
It is consistent to reach well washing effect.
As shown in fig. 6, Fig. 6 is the structure chart of the specific embodiment for going out well liquid processing system in Fig. 1.Go out well liquid processing
System 4 is the major part of the well washing equipment.Going out well liquid processing system 4 includes settling tank one-level chamber 4-1, two level desanding swash plate 4-
2, hydrocyclone entrance 4-3, hydrocyclone solid matter outlet 4-4, hydrocyclone liquid outlet 4-5, eddy flow
Desander liquid outlet line 4-6, one-level desanding swash plate 4-7, dividing plate 4-8, settling tank secondary chamber 4-9, secondary chamber emptying
And overflow line 4-10, two level sedimentation chamber suspension separate dividing plate 4-11, two level sedimentation chamber and three-level sedimentation chamber connecting pipeline 4-
12, secondary chamber liquid level sensor sense line 4-13, settling tank fluid level transmitter 4-14, settling tank three-level dividing plate 4-15, three-level
Chamber empties and overflow line 4-16, settling tank three-level chamber 4-17, settling tank backwash pipeline 4-18, settles tank 4-19, sinks
Tank output liquid pipeline 4-20, coarse filter 4-21, storage tank pipeline 4-22, flushing fluid storage tank liquid level gauge 4-23, overflow water drop
Storage tank liquid level gauge 4-24, flushing fluid storage tank 4-25, overflow water storage tank 4-26, overflow water storage tank 4-27, flushing fluid storage
Water tank blowoff valve 4-28, flushing fluid storage tank liquid export line 4-29, fine filter fluid inlet end regulating gate 4-30, wash
Well liquid emergent by-passing valve 4-31, fine filter blowoff valve 4-32, fine filter 4-33, fine filter liquid outlet end regulating gate 4-34,
Fine filter liquid export line 4-35, pollution displaying valve 4-36, recoil flow settling tank washing control valve 4-37, recoil flow essence
Filter control valve 4-38, settling tank three-level chamber blowoff valve 4-39, recoil flow master control valve 4-40, communicating valve 4-41, communicating valve
Actuator 4-42, communicating valve control circuit 4-43, communicating valve source of the gas 4-44, settling tank secondary chamber blowoff valve 4-45, settling tank one
Level chamber blowoff valve 4-46.
Go out well liquid processing system 4 and be connected to washing well process intelligent control process part, and at washing well process intelligent control
Manage after flushing fluid desanding under the control of part, then impurity separation is carried out by settling tank, and go out well liquid after impurity is separated
By coarse filter coarse filtration and fine filter refined filtration, to clean flushing fluid.
The part mainly forms as follows：
1st, desanding device.Including desanding swash plate in cyclone desanding device and tank body.Wherein, cyclone desanding device includes eddy flow
Desander entrance 4-3, hydrocyclone solid matter outlet 4-4, hydrocyclone liquid outlet 4-5, the device have
Girt-water separation function；Desanding swash plate includes one-level desanding swash plate 4-7 and two level desanding swash plate 4-2 in tank body.
2nd, well-flushing circulation fluid impurity separation settling tank.The settling tank has three working chambers, is settling tank one-level chamber respectively
4-1, settling tank secondary chamber 4-9, settling tank three-level chamber 4-17, the shell of three working chambers are to settle tank 4-19, three works
Make in chamber, settling tank one-level chamber 4-1 and settling tank secondary chamber 4-9 by the dividing plate 4-8 of half tank body height be divided into two it is semi-independent
Sedimentation chamber.The effect of dividing plate is that the granular solid material for preventing to remain in liquid continues to flow with circulation fluid, by granular solid
Material shelves separate in settling tank one-level chamber 4-1；After liquid level exceedes dividing plate in tank body, well-flushing circulation fluid Midst density is relatively low
Suspension（Such as：Aggregation, crude oil, rubbery chip, greasy filth etc.）Enter settling tank secondary chamber 4-9 with circulation fluid；In settling tank
Between secondary chamber 4-9 and settling tank three-level chamber 4-17, in tank body by with the identical full closeding clapboard of tank body inner section, i.e.,
Settling tank three-level dividing plate 4-15 is divided into separate sedimentation chamber.Purpose is control solid granulates and well-flushing circulation fluid Midst density
Relatively low suspension enters settling tank three-level chamber 4-17 with circulation fluid.The circulation of liquid stream is by tank between secondary chamber and three-level chamber
External connecting pipeline is completed, and has the settling tank two three-level chamber communicating valve 4-41 of control liquid stream break-make on connecting pipeline, should
Communicating valve is electric control valve, and communicating valve 4-41 break-makes rely on the liquid level signal that secondary chamber liquid level sensor sense line 4-13 is provided
To control, minimum liquid level and the normally-open liquid level region of valve of setting communicating valve 4-41 openings are controlled by PLC, is realized automatic
Control the break-make of secondary chamber and three-level chamber liquid stream to control, and ensure that the impurity in liquid stream does not enter settling tank three-level chamber 4- as far as possible
17.PLC provides signal according to secondary chamber liquid level sensor sense line 4-13, according to the Liquid level of setting height and actual liquid
Position degree of contrast, it is determined that control communicating valve 4-41 connecting and disconnecting.The action of threshold switch is connected by communicating valve control circuit 4-43
The signal of offer, connection valve actuator 4-42 is passed to, is connected（Or disconnect）Communicating valve source of the gas, realize that communicating valve 4-41's is logical
It is disconnected.
3rd, settling tank overflow and emptying.Secondary chamber empties and overflow line 4-10 is emptied with three-level chamber and overflow line 4-16
Overflow ducts after being full of entirely for liquid in secondary chamber and three-level intracavity gas passing away and tank body, playing prevents tank body from building the pressure
Effect, overflow liquid enters overflow water storage tank 4-26.
4th, the cleaning of settling tank inner tank wall.Cleaned to ensure that three-level flushing fluid is handled in settling tank 4-19 tank body, three
Individual chamber is respectively provided with the sewage draining valve of 6 inch, is respectively：Settling tank one-level chamber blowoff valve 4-46, settling tank secondary chamber row
Dirty valve 4-45, settling tank three-level chamber blowoff valve 4-39, the dirt of each chamber discharge three-level flushing fluid processing settling tank with highly pressurised liquid
Body 4-19.The mode of blowdown has two kinds：The first is nature blowdown, only need to open blowoff valve, be taken by remaining liquid in tank body
Outside with the debris drain tank in tank body.Second is power blowdown.To realize three sedimentation chamber debris in sedimentation tank body 4-19
Discharge, be specially provided with settling tank backwash pipeline 4-18, the pipeline is the anti-corrosive steel tube of 2 inch half, and the pipeline is connected to well-flushing
It is cellular by settling tank body 4-19 tank skins and two dividing plates, tank body gut line on plunger pump 6-1.During recoil settling tank, open
Dynamic well-flushing plunger pump 6-1, recoil flow master control valve 4-40 and recoil flow settling tank washing control valve 4-37 are opened, closed anti-
The highly pressurised liquid of swash of wave journey fine filter control valve 4-38, well-flushing plunger pump 6-1 output enters three chambers in tank body, and highly pressurised liquid is in
Ring-type water-jet, cleaning tank body inwall debris, realizes the cleaning of settling tank inner tank wall.
5th, the further cleaning of flushing fluid（Coarse filtration）.At sedimentation tank 4-19 three-level chamber, settling tank output is drawn
Liquid line 4-20, coarse filter 4-21 is connected on the pipeline, its structure is Y types, and the convenient debris to being isolated in pipeline takes
Go out, realize the further filtering of impurity before entering flushing fluid storage tank 4-25, liquid after filtering is along coarse filter to storage tank
Pipeline 4-22 is stored into flushing fluid storage tank 4-25 and precipitation purification.At the top of flushing fluid storage tank 4-25 and overflow water stores up
Liquid level gauge is fitted with the top of water tank 4-26, is flushing fluid storage tank liquid level gauge 4-23 and overflow water storage tank liquid level gauge 4- respectively
24.There is overflow water storage tank 4-27 and flushing fluid storage tank blowoff valve 4-28 in the bottom of two water tanks.
6th, the fine filtering of flushing fluid（Refined filtration）.The liquid of storage is from flushing fluid water tank 4- in flushing fluid water tank 4-25
Flowed out in 25, through also needing to carry out flushing fluid by fine filter 4-33 further fine cleaning before entering well-flushing plunger pump
Filtering.Fine filter 4-33's has recoil cleaning function.Fine filter 4-33 does filter core, slot width using laser slotted screen pipe
Depending on the requirement of well impurity screening.Required according to well well-flushing, satisfactory circumferential axle is cut out with laser
To gap, it is ensured that more than the block impurity such as the graininess impurity of slot width and rubber be blocked in fine filter 4-33 filter core it
Outside.Fine filter filter core outer cover fine filter case, has the impurity storage area of ring-type, and clean liquid stream passes through fine filter 4-
33 filter core flows out from fine filter 4-33 outlet end.In fine filter 4-33 working conditions, fine filter liquid inlet
Regulating gate 4-30 and fine filter liquid outlet end regulating gate 4-34 is held to open, recoil flow fine filter control valve 4-38 and essence
Filter blowoff valve 4-32 and the emergent by-passing valve 4-31 of flushing fluid are closed, after flushing fluid is filtered by fine filter, along fine filter liquid
Export pipeline 4-35 enters well-flushing plunger pump 6-1.I.e. pollution displaying valve 4-36 is provided with the outlet end shell of fine filter
（Pressure vacuum gauge）, the pollution level of fine filter is determined using the vacuum values of detection.Its principle is that fine filter blocks, dirty
Dye shows that the vacuum of valve 4-36 detections is bigger, and therefore, vacuum signal is to determine the important evidence whether fine filter cleans.
Another liquid feeding channel in parallel with fine filter 4-33, met an urgent need by-passing valve 4-31 there is provided flushing fluid, the passage is in fine filter
In the case of 4-33 Severe blockages, not influence the continuity of washing well process liquid circulation and ad hoc bypass emergency flight control gate.
Under normal circumstances, the emergent by-passing valve 4-31 of the flushing fluid is closed.Under emergency rating, the emergent by-passing valve 4-31 of flushing fluid
Open, and at fine filter fluid inlet end control valve 4-30 and fine filter liquid outlet control valve 4-34 in fine filter flow
In closed mode, fine filter blowoff valve 4-32 is closed.After fine filter 4-33 Severe blockages, well-flushing post can be utilized
The power for filling in pump 6-1 carries out back flush to the debris of fine filter 4-33 filter cores, opens fine filter blowoff valve 4-32, removes refined filtration
Device debris, realize the cleaning of fine filter.
As shown in fig. 7, Fig. 7 is the structure chart of a specific embodiment of the working fluid detecting system in Fig. 1.Working fluid detects
System 5 bypasses replenishment valve 5-1, flow sensor sense line 5-2, flow sensor 5-3, working fluid by cleaning flushing fluid and detected
Sampling gate 5-4 is formed.Working fluid detecting system 5 is that working fluid quality is detected, and with going out well liquid quality testing contrast,
Determine well washing effect.
Cleaning flushing fluid bypass replenishment valve 5-1 can realize tank car supplying clean liquid, supplement the flushing fluid of cleaning.Flow
The flow signal of sensor 5-3 collections realizes that information is handed over PLC intelligent control centers by flow sensor sense line 5-2
Stream, engine 6-4 rotating speeds are controlled to provide decision-making foundation for PLC.When well-flushing plunger pumpage deficiency, passed according to engine speed
The engine speed of sensor 6-5 detections, PLC intelligent control centers send engine and improve tach signal, 50 turns of lifting every time,
Carry out one-time detection within 0.5 second, engine speed is continued to lift up when insufficient, untill engine reaches the rotating speed of regulation discharge capacity.
Conversely, when well-flushing plunger pumpage is too high, engine reduces rotating speed, untill engine reaches the rotating speed of regulation discharge capacity.
As shown in figure 8, Fig. 8 is the structure chart of a specific embodiment of the working fluid dynamical system in Fig. 1.Working fluid power
System 6 mainly by well-flushing plunger pump 6-1, engine throttle controller control circuit 6-2, engine throttle controller 6-3, is started
Machine 6-4, speed probe 6-5, engine speed sensor sense line 6-6, working fluid pressure sensor sense line 6-7,
Working fluid pressure sensor 6-8, safety valve 6-9, well-flushing plunger pump emptying control valve 6-10 and well-flushing plunger pump emptying choke valve
6-11 etc. is formed.Working fluid dynamical system 6 is connected to washing well process intelligent control process part, and in washing well process intelligent control
The rotating speed of its engine is adjusted under the control of process part, the flushing fluid after cleaning is changed into highly pressurised liquid output, realized
Well well-flushing.
Wherein, engine 6-4 provides power for well-flushing plunger pump 6-1, is worked by well-flushing plunger pump 6-1, produces high pressure
Liquid exports, and realizes well well-flushing.Speed probe 6-5 is installed on engine, there is engine speed biography on speed probe
Sensor sense line 6-6, tach signal is transmitted in time PLC intelligent control centers.Meanwhile also supporting on engine it is mounted with to send out
Motivation throttle control 6-3, engine throttle controller control circuit 6-2 and the supporting connection of PLC intelligent control centers, are received
The control signal of PLC intelligent control centers output, adjusts engine speed.Well-flushing plunger pump high-voltage output end is provided with safety valve
6-9, the safety valve are mainly the pressure for controlling well-flushing plunger pump output liquid, it is ensured that construction technology and equipment safety.With safety
Well-flushing plunger pump emptying control valve 6-10 well-flushings plunger pump emptying of having been connected on pressure duct vent line in parallel valve 6-9 throttles
Valve 6-11, the two valves are respectively high pressure cock valve and high-pressure needle valve.In well-flushing plunger pump toward before injecting flushing fluid in well,
Need first to start well-flushing plunger pump, the air of well-flushing plunger pump output terminal is emptied using highly pressurised liquid, it is ensured that output liquid
Body is stable.Working fluid pressure sensor 6-8 be responsible for dynamic monitoring from the liquid that well-flushing plunger pump 6-1 is exported enter well before
Pressure value, Dynamic Announce, and passed to the well pressure signal that enters of flushing fluid by working fluid pressure sensor sense line 6-7
PLC functional control center, PLC functional control centre junction Heshui well working fluid end relatively control engine with going out well liquid end pressure
Throttle adjustment well-flushing discharge capacity sends alarm signal, cuts off engine power if necessary.
As shown in figure 9, Fig. 9 is the structure chart of a specific embodiment of the working fluid control system in Fig. 1.Working fluid controls
System 7 includes check valve 7-1, high pressure cock valve 7-2, by-passing valve 7-3, working fluid connection well head pipeline 7-4.Working fluid control system
System 7 be in order to when preventing that well-flushing plunger pump pressure be less than borehole pressure in well liquid return out cause well-flushing plunger pump it is with pressure start be stranded
Difficult and protection well, prevents borehole pressure fluctuation from causing well-flushing to fail.
The system is mainly provided with check valve 7-1, and the valve only allows the output of well-flushing plunger pump highly pressurised liquid to enter in well, no
Liquid in well is allowed to return out；High pressure cock valve 7-2 controls the break-make of well-flushing plunger pump output liquid；By-passing valve 7-3 is exhaust-valve
Door, after well-flushing, closing shaft collar needs out by-passing valve 7-3 to be emptied.Working fluid connection well head pipeline 7-4 is 2
Inch high-pressure hose line, is connected with well head joint, realizes the injection of flushing fluid.
As shown in Fig. 2 washing well process intelligent control processing unit in the intelligent self-loopa well well washing equipment of Fig. 2 present invention
The theory diagram of the specific embodiment divided.
In one embodiment, the washing well process intelligent control process part uses the PLC intelligent controls of SIMATIC -300
Device, have with lower module：
(1) data setup module.Operating personnel input washing technology parameter according to technology for washing well design requirement.Such as：Go out well
The control pressure of liquid, washing well process uninterrupted, duration of well flushing, settling tank height of liquid level control, go out well liquid control valve and fluid infusion
Control of valve opening etc., control parameter can be set by the touch-screen of PLC, realize dynamic control.
(2) data disaply moudle.Convenient man-machine interface service has been integrated with the operating systems of S7-300 therefore man-machine
The programming requirement of dialogue greatly reduces.SIMATIC man-machine interfaces (HMl) obtain data from S7-300, and S7-300 is referred to by user
Fixed refresh rate transmits these data.The transmission of S7-300 operating systems automatically processing data.With man-machine interactive system
Display and setting, system is set and inquiry, display function.
(3) the transmission of data and processing module.The controller PLC system has data storage, report printing and data input
Output function.Data storage meets the storage of 15 wells time above well-flushing data；Report printing can make well-flushing quality obtain mistake entirely
Range monitoring, quality tracing and responsibility are apparent；Data input output is easy to Water Injection Engineering technical staff to analyze and optimize technology for washing well
Conceptual design, improve design level and ability.Information installed in well-flushing flow is received by each sensor, then by PLG intelligence
Control system carries out A/D module conversions, contrasts and controls with arrange parameter, then sends control signal.Such as：According to going out well liquid pressure
Power controls setup parameter, and PLC control system finds after the well head pressure signal of collection is received and arranges value has deviation,
As pressure is bigger than normal, then the signal of output increase ecp gatage, and gatage value is provided.Conversely, then output is dropped
Low ecp gatage signal, and gatage value is provided.
(4) PLC manual controls are with automatically controlling handover module.System operatio is mainly PLC manual controls and automatically controlled
Switching and operation.System operatio when manual control emphasis is front and rear well-flushing and troubleshooting；It is well-flushing to automatically control emphasis
During control.
(5) password protection module：Multistage password protection can make user's height, effectively protect its technology secret, prevent not
Duplication and modification through permission, mode of operation selecting switch：Mode of operation selecting switch can extract as key, work as key
During extraction, mode of operation cannot be changed.Thus prevent illegal deletion or overwrite user program.
(6) overhigh pumping pressure is protected.The overhigh pumping pressure of well-flushing plunger pump has two kinds of situations：One kind is limiting pressure beyond washing
The design limit pressure of well plunger pump, jeopardize equipment and personal security, it is necessary to which limiting pressure is protected.Limiting pressure is protected by entering well
The safety valve 6-9 of Force system of surging is controlled, and the safety valve is shearing pin safety valve, and shear pin is broken after superpressure, and bypass is let out
Stream, reduce pressure, it is ensured that safety；Another kind is detail design pressure protection.According to technological requirement, controlled before construction by PLC
System panel processed inputs Construction control pressure value, passes through working fluid pressure sensor 6-8 dynamic monitoring working fluids in work progress
Pressure, the well pressure signal that enters of flushing fluid is passed in PLC functional control by working fluid pressure sensor sense line 6-7
The heart, PLC functional control centre junction Heshui well working fluid end relatively control engine throttle to adjust well-flushing with going out well liquid end pressure
Discharge capacity sends alarm signal, cuts off engine power if necessary.
(7) the too high alarm and protection of liquid level.To ensure that washing well process passes in and out the relatively stable of well liquid body, liquid in settling tank is prevented
Body, which excessively overflows, to be polluted, and is provided with settling tank fluid level transmitter 4-14 at the top of sedimentation tank, is passed through secondary chamber liquid level
Sensor senses circuit 4-13 collections provide signal, Liquid level height and actual liquid of the PLC intelligence control systems according to setting
Position degree of contrast, the liquid level of design are divided into：Three low liquid level, high level, limit high level control liquid levels, when liquid level is in
Belong to normal work liquid level between low liquid level and high level；When liquid level is higher than high level, and not up to the limit high level when, LPC
On the one hand control system adjusts well rate of discharge by turning down ecp choke valve 2-4 aperture, on the other hand simultaneously
Change well-flushing plunger pumpage by adjusting engine speed so that washing well process meets design technology requirement to realize high level
Control.When liquid level is in limit high level, show that the risk of liquid spilling settling tank is very big, now, PLC intelligent checks
System transmission reduces engine speed, and cuts off the order of well-flushing plunger pump power, realizes the automatic protection under limit liquid level.
In one embodiment, intelligent well-flushing flow is as follows：
(1) manifold connects before well-flushing.Required according to technology for washing well, according to political affairs well-flushing and the requirement of anti-flushing well connecting pipeline, by intelligence
The high-pressure hose of energy well well washing equipment is connected with the oil pipe gate and sleeve gate of well respectively.
Before well-flushing intelligence system setting and control
Required according to technology for washing well, flushing parameter is set by PLC intelligent controllers touch-screen：The time of well-flushing, three ranks
The parameters such as Duan Liuliang, well outlet pressure, well-flushing type, highest well-flushing pressure, settling tank liquid level, engine peak speed.Should
Parameter is supplied to PLC intelligent controllers as controlled quentity controlled variable.
Fluid infusion control section before well-flushing.Tank level signal is gathered by the liquid level sensor of settling tank tank deck, passes through setting
Low liquid level, high level and the limit liquid level of settling tank, by fluid infusion process in PLC control tank bodies.Fluid infusion is supplemented by main line water, when
When liquid level is less than the low liquid level set, fluid infusion gate is opened with larger opening, gives well-flushing settling tank fluid infusion；When liquid level is in low liquid level
Between high level, the aperture of fluid infusion gate is controlled by PLC control system, reduces liquid supply rate；After liquid level exceedes high level,
Fluid infusion gate stops feed flow；When overstep the extreme limit a high position when, send alarm signal, manually stop feed flow.
The switch control of communicating valve.Communicating valve is normal closed gate, i.e., before well-flushing, communicating valve is to close, when liquid level reaches
To after setting position, ecp communicating valve is opened, and realizes the chamber of settling tank second to the chamber feed flow of settling tank the 3rd.When liquid in tank body
Potential drop is low, and during less than setting low liquid level, communicating valve is closed, and stops the chamber of settling tank second to the chamber feed flow of settling tank the 3rd.
During fluid infusion, when system occurs abnormal, change-over switch is pushed manual position by operating personnel, then by artificial
Remote opening, corresponding control valve is closed, auto-programming terminates.
(3) the emptying of well-flushing plunger pump
Start engine, manual unlocking exhaust-valve low speed operation well-flushing plunger pump, exclude air in flow and pump, pump liquid is just
Exhaust-valve is progressively closed after often, well-flushing plunger pump pumps out liquid under engine idle conditions and overcomes check valve resistance small into well
Flow feed flow.
(4) intelligent well washing well process control
1. automatic start process（Lift well-flushing discharge capacity process）.Small displacement pump liquid into well after the emptying of well-flushing plunger pump, this
When open well water outlet gate.Observation well washing equipment and well flow have it is without exception, confirm it is without exception in the case of, possess and wash
After the external condition of well, auto state is switched to, presses " beginning well-flushing " button, engine starts to raise speed, in " the speed-raising of setting
In time ", engine often lifts 50 turns of wait 0.5s, and system automatic detection well-flushing outlet of plunger pump discharge capacity, pressure and well go out
Mouth pressure, discharge capacity, the aperture of well speed control muffler is adjusted, well outlet pressure is maintained, so goes round and begins again, linear speed-raising is extremely
Well-flushing outlet of plunger pump discharge capacity reaches " first stage well-flushing discharge capacity ", into the formal well-flushing first stage.
2. the well-flushing first stage（It is micro- to tell the stage）Time sets 2h, and standard requires the micro- amount of telling control within 3m3/h, micro- to tell
The size of amount is by setting well pressure to adjust the aperture of choke valve to adjust micro- amount of telling.
3. well-flushing second stage（Balance the well-flushing stage）.It is micro- tell the well-flushing stage reach set the time after, intelligence control system
Auto linear improves engine speed, well-flushing plunger pumpage is reached " second stage well-flushing discharge capacity ", into constant pressure and flow
Well-flushing second stage.
4. the well-flushing phase III（The stable well-flushing stage）.After the balance well-flushing stage reaches the setting time, intelligence control system
Auto linear improves engine speed, well-flushing plunger pumpage is reached " phase III well-flushing discharge capacity ", into constant pressure and flow
The well-flushing phase III, after stable well-flushing reaches setting time, contrasting detection well Inlet and outlet water water quality is consistent with discharge capacity, and well-flushing closes
Lattice.
5. fluid infusion controls in washing well process.The open and close of make-up valve are by PLC system according to settling tank height of liquid level
Automatically control, ensure that the amount of liquid in settling tank is relatively stable, filtering and the effect of settling for reaching flushing fluid are optimal.In well-flushing mistake
Cheng Zhong, due to the geological conditions on water filling stratum and the change of well-flushing pressure, the liquid measure in well-flushing tank is difficult to keep stable.In order to protect
The steady and well-flushing quality of well-flushing is demonstrate,proved, is maintained by PLC system by automatically controlling the liquid measure of well-flushing tank in scope of design.Washing
When well outlet of plunger pump flow is more than well rate of discharge, illustrate formation leakage, at this moment the part injection stratum of flushing fluid, is washed
Liquid measure in canister gradually reduces, and the reduction of liquid measure necessarily causes the decline of liquid level, and PLC system monitors fluid level transmitter hair in real time
The liquid level signal sent, when liquid level, which drops to, designs the next, system automatically turns on make-up valve fluid infusion into well-flushing tank, fluid infusion liquid measure
Reach well-flushing tank design it is upper when, system closes make-up valve automatically.
6. well-flushing terminates.After well-flushing is qualified, press " deceleration ", control system is started according to " automatic start " return sequence
Machine slows down, but well discharge pressure still constant pressure self-controlled, after engine is reduced to idling, closes well flowing water Valve, engine puts out
Fire, well-flushing terminate.
7. dismantling well-flushing flow pipeline, construction terminates.
Claims (10)
1. intelligent self-loopa well well washing equipment, it is characterised in that the intelligent self-loopa well well washing equipment includes well-flushing
Liquid circular processed portion and washing well process intelligent control process part, the flushing fluid circular processed portion include well liquid processing system
System and working fluid dynamical system, this goes out well liquid processing system and is connected to the washing well process intelligent control process part, and is washed at this
By after flushing fluid desanding under the control of well Intelligent Process Control process part, then impurity separation carried out by settling tank, and will be miscellaneous
The well liquid that goes out after matter separation passes through coarse filter coarse filtration and fine filter refined filtration, to clean flushing fluid, working fluid dynamical system connection
In the washing well process intelligent control process part, and adjust it under the control of the washing well process intelligent control process part and start
The rotating speed of machine, the flushing fluid after cleaning is changed into high pressure working fluid by flushing pump as working fluid and exported, realizes well
Well-flushing；
The flushing fluid circular processed portion also includes：Go out well liquid fluid infusion system, this goes out well liquid fluid infusion system and is connected to the well-flushing mistake
Journey intelligent control process part goes out well liquid processing system with this, and leads under the control of the washing well process intelligent control process part
Cross and open the make-up valve that this goes out in well liquid fluid infusion system and go out well liquid processing system supplying clean from well main line to this before well-flushing
Circulation fluid, when occurring well outer circulation liquid deficiency in washing well process, open the make-up valve and go out from the well main line to this at well liquid
Reason system feedwater supplement；Go out well liquid control system, this goes out well liquid control system and is connected to the washing well process intelligent control processing unit
Point and this go out well liquid processing system, this goes out the outlet end that well liquid control system is connected to well, will go out well liquid and be transferred to this to go out well
Liquid treating system, and monitor flushing fluid and go out well pressure value and flow signal, in the control of washing well process intelligent control process part
The lower pressure and discharge capacity for adjusting out well liquid；Working fluid detecting system, the working fluid detecting system are located at this and go out well liquid processing system
Between the working fluid dynamical system, to be detected to working fluid quality；Working fluid control system, the working fluid control system
Liquid returns out and causes flushing pump difficulty in starting with pressure and protection in well during for preventing that the well-flushing pump pressure is less than borehole pressure
Well；
The washing well process intelligent control process part includes：The transmission of data setup module, data disaply moudle and data and place
Module is managed, the data setup module is used to set flushing parameter, and the data disaply moudle is used for the setting of man-machine interactive system, looked into
Ask and display, transmission and the processing module of the data are used for data storage, report printing and data input and output；Manual control with
Automatically control handover module and password protection module, the manual control and automatically control handover module be used for carry out manual control and
The switching and operation automatically controlled, the password protection module are used to prevent illegal deletion or overwrite user program.
2. intelligent self-loopa well well washing equipment according to claim 1, it is characterised in that this goes out well liquid control system
Including pressure sensor, ecp choke valve, flow sensor and safety valve, blocked in flow or system pressure exceedes regulation
During pressure, the safety valve is opened, and to carry out system decompression, the pressure sensor detects the pressure value of well liquid, and by the pressure
Value is transferred to the washing well process intelligent control process part, the flow sensor detection flows signal, and the flow signal is passed
The washing well process intelligent control process part is defeated by, the washing well process intelligent control process part controls the ecp choke valve
Unlatching, to adjust out the pressure of well liquid and discharge capacity.
3. intelligent self-loopa well well washing equipment according to claim 1, it is characterised in that the settling tank includes sedimentation
Tank one-level chamber, settling tank secondary chamber and settling tank three-level chamber, pass through half tank between the settling tank one-level chamber and the settling tank secondary chamber
The dividing plate of body height is divided into two quasi-sovereign sedimentation chambers, and the granular solid material remained in liquid is kept off in the settling tank one
Level intracavitary separation, is full closeding clapboard between the settling tank secondary chamber and the settling tank three-level chamber, to control solid granulates and hang
Float enters the settling tank three-level chamber, and being circulated through for liquid stream between the settling tank secondary chamber and the settling tank three-level chamber connects
Pipeline is completed, and has secondary chamber liquid level sensor in the settling tank secondary chamber, the secondary chamber liquid level sensor detects the sedimentation
The liquid level of tank secondary chamber, and the liquid level is transferred to the washing well process intelligent control process part, the washing well process
Intelligent control process part controls the connecting and disconnecting of the communicating valve on the connecting pipeline according to the liquid level.
4. intelligent self-loopa well well washing equipment according to claim 3, it is characterised in that this goes out well liquid processing system
Also include secondary chamber emptying and overflow line, three-level chamber emptying and overflow line and overflow water storage tank, the secondary chamber emptying and
Overflow line and the three-level chamber empty and overflow line is by the liquid of overflow in the settling tank secondary chamber and the settling tank three-level chamber
It is transported to the overflow water storage tank.
5. intelligent self-loopa well well washing equipment according to claim 3, it is characterised in that this goes out well liquid processing system
Also include settling tank one-level chamber blowoff valve, settling tank secondary chamber blowoff valve and settling tank three-level chamber blowoff valve, to empty the sedimentation
Debris in tank one-level chamber, the settling tank secondary chamber and the settling tank three-level chamber.
6. intelligent self-loopa well well washing equipment according to claim 5, it is characterised in that this goes out well liquid processing system
Also include settling tank backwash pipeline, recoil flow master control valve and recoil flow settling tank washing control valve, the settling tank are anti-
Clean-up line is connected on the flushing pump, is opening the recoil flow master control valve and the recoil flow settling tank washing control valve
When, clean the settling tank one-level chamber, the settling tank secondary chamber and the settling tank three-level using highly pressurised liquid caused by the flushing pump
Debris in chamber.
7. intelligent self-loopa well well washing equipment according to claim 1, it is characterised in that this goes out well liquid processing system
Also include flushing fluid storage tank, the front end of the flushing fluid storage tank is connected to the coarse filter, and the well liquid that goes out after coarse filtration is carried out
Storage and precipitation purification, the fine filter are connected to the fluid output port of the flushing fluid storage tank, have recoil cleaning function, and adopt
Filter core is done with laser slotted screen pipe, slot width is depending on the requirement of well impurity screening.
8. intelligent self-loopa well well washing equipment according to claim 1, it is characterised in that the working fluid detecting system
Pass through including cleaning flushing fluid bypass replenishment valve, flow sensor and working fluid detection sampling gate, the working fluid detecting system
Working fluid detection sampling gate carries out the sampling of working fluid, and cleaning flushing fluid bypass replenishment valve is used for the well-flushing for supplementing cleaning
Liquid, the flow sensor are connected to the washing well process intelligent control process part, and the flow transmission of the working fluid detected
The washing well process intelligent control process part is given, to adjust the rotating speed of the engine.
9. intelligent self-loopa well well washing equipment according to claim 1, it is characterised in that the working fluid dynamical system
Also include engine throttle controller, speed probe, working fluid pressure sensor, safety valve, plunger pump emptying control valve and
Plunger pump empties choke valve, and the tach signal of the engine is transferred to the washing well process intelligent control and handled by the speed probe
Part, the washing well process intelligent control process part, by the engine throttle controller, adjust the hair according to the tach signal
Motivation rotating speed, the safety valve control the pressure of the flushing pump output liquid, and plunger pump emptying control valve and the plunger pump empty
Choke valve in the flushing pump toward before injecting flushing fluid in well, using highly pressurised liquid caused by the flushing pump to well-flushing pump output terminal
Air emptied, the working fluid pressure sensor monitoring from the high pressure working fluid that the flushing pump exports enter well before
Pressure value, and the pressure value is transferred to the washing well process intelligent control process part, washing well process intelligent control processing
Part controls the engine throttle controller according to the pressure value, and to adjust well-flushing discharge capacity or send alarm signal, cut-out is started
Mechanomotive force.
10. intelligent self-loopa well well washing equipment according to claim 1, it is characterised in that working fluid control system
System includes check valve, high pressure cock valve, and by-passing valve connects well head pipeline with working fluid, and the check valve makes being somebody's turn to do for flushing pump output
High pressure working fluid enters in well, does not allow liquid in well to return out, and the high pressure cock valve controls the break-make of the high pressure working fluid, by this
Port valve is emptying valve, and working fluid connection well head pipeline is connected with well head joint, realizes the injection of the high pressure working fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310001014.0A CN103912226B (en) | 2013-01-05 | 2013-01-05 | Intelligent self-loopa well well washing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310001014.0A CN103912226B (en) | 2013-01-05 | 2013-01-05 | Intelligent self-loopa well well washing equipment |
Publications (2)
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| CN104806183B (en) * | 2014-01-23 | 2017-04-05 | 山东海吉雅环保设备有限公司 | Oil field flushing returns discharge opeing blood pressure lowering except device for silt |
| CN107489384B (en) * | 2016-06-13 | 2023-07-11 | 中国石油化工股份有限公司 | Skid-mounted well-flushing liquid recycling device and method for well-repairing operation |
| CN106223877B (en) * | 2016-08-12 | 2018-08-21 | 中国石油大学(华东) | The automatic well washing apparatus of coal bed gas well |
| CN110792403B (en) * | 2018-08-02 | 2021-09-28 | 中国石油天然气股份有限公司 | Well washing method and equipment |
| CN109611042B (en) * | 2019-01-08 | 2023-04-25 | 中国石油天然气股份有限公司浙江油田分公司西南采气厂 | Automatic well flushing device for coal-bed gas well |
| CN113818824B (en) * | 2021-09-16 | 2023-06-06 | 中煤科工集团重庆研究院有限公司 | Pneumatic movable type mining drilling flushing fluid recycling device |
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| CN201037384Y (en) * | 2007-02-03 | 2008-03-19 | 崔朝轩 | High pressure water injection well closure well-washing device |
| CN202117635U (en) * | 2011-07-05 | 2012-01-18 | 盘锦辽河油田鸿海钻采技术发展有限公司 | Multistage self-circulation well flushing truck for oilfield water injection well |
| CN202832312U (en) * | 2012-09-14 | 2013-03-27 | 中国石油化工股份有限公司 | Two-vehicle installing pressure unrelief well washing vehicle |
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| US4247312A (en) * | 1979-02-16 | 1981-01-27 | Conoco, Inc. | Drilling fluid circulation system |
| CN201037384Y (en) * | 2007-02-03 | 2008-03-19 | 崔朝轩 | High pressure water injection well closure well-washing device |
| CN202117635U (en) * | 2011-07-05 | 2012-01-18 | 盘锦辽河油田鸿海钻采技术发展有限公司 | Multistage self-circulation well flushing truck for oilfield water injection well |
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