CN103912226A - Intelligent self-circulation well washing device - Google Patents
Intelligent self-circulation well washing device Download PDFInfo
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- CN103912226A CN103912226A CN201310001014.0A CN201310001014A CN103912226A CN 103912226 A CN103912226 A CN 103912226A CN 201310001014 A CN201310001014 A CN 201310001014A CN 103912226 A CN103912226 A CN 103912226A
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Abstract
The invention provides an intelligent self-circulation well washing device, wherein a drainage fluid treatment system in a washing fluid treatment part is controlled by an intelligent control treatment part to desand the washing fluid, and then subjected to impurity separation by a settling tank, the drainage fluid which has been subjected to impurity separation is rough filtered by a coarse strainer and fine filtered by a fine filter to clean the washing fluid, a working fluid power system in the washing fluid treatment part is controlled by the intelligent control treatment part to adjust the rotating speed of an engine so as to use the cleaned washing fluid as the working fluid to be converted into high-pressure working fluid by a well washing pump to output, and thus the cleaning of the well is achieved. The intelligent self-circulation well washing device is a vehicle-mounted well washing vehicle, and has a function of intelligently controlling the whole washing process; according to the intelligent self-circulation well washing device, effectively control in the well washing process according to different kinds of wells and different washing phases can be achieved, the water injection well is protected, and the washing quality of the water injection well is improved.
Description
Technical field
The present invention relates to water injection well in oil fields clean-out service equipment, particularly relate to a kind of intelligent self-loopa well well washing equipment.
Background technology
Water injection well well-flushing generally can be divided into normal well, goes out Sha Jing, under-injected well three types.Dissimilar well well-flushing requires variant.Normal water injection well well-flushing is a point three phases well-flushing.1, micro-spray is not leaked the stage: control well head open flow gate, well head oil is forced down in Pneumatic pressure 1MPa, regulate well-flushing discharge capacity to 25m
3/ h, well-flushing 2h, fuel injection quantity control is at 3m
3/ h.2, the balance well-flushing stage: control well head open flow gate, make oil pressure equal starting pressure, regulate well-flushing discharge capacity to 35 m
3/ h, well-flushing 2h.3, stablize the well-flushing stage: keep well head oil pressure constant, regulate well-flushing discharge capacity to 40m
3/ h, well-flushing 2h.Sand output well well-flushing is the feature according to sand production in oil, steadily controls well head atmospheric valve door, makes well head oil pressure a little more than starting pressure, regulates well-flushing discharge capacity to 20 m
3/ h-30m
3/ h, well-flushing 6h.Under-injected well well-flushing is according to oil reservoir densification, and the feature that is difficult for shaking out is steadily controlled wellhead venting gate, makes oil pressure lower than starting pressure, and closing well emptying 1h, then starts carwash, regulates well-washing truck discharge capacity to 40m
3/ h, well-flushing 6h.
And there is following problem in existing common self-circulation well flushing truck:
1, open before Artificial Control well-flushing, cause while closing well well-flushing into and out of gate the pressure on stratum is involved and affect greatly.Particularly poly-water drive and the sand output well of turning of note changes very responsively to pressure, and the unexpected variation of pressure often causes that formation sand production tells poly-ly, causes well-flushing failure.
2, washing well process pressure and discharge capacity Artificial Control, cannot meet the requirement that different water injection wells takes different technology for washing well to design.According to water injection well technology for washing well rules, washing well process will be taked different measures according to dissimilar hole condition, and emphasis will carry out pressure, discharge capacity, time control to process.Meanwhile, the well washing effect that reach, the also necessary eliminating impurities effect that improves well-flushing flow process.For easily shaking out or going out the water injection well of polymer, require to build the pressure well-flushing, prevent the fluctuation of pressure, cause water injection well to shake out, to go out polymer serious, injury water injection well and downhole tool.Operation requirements: first open sleeve pipe well-flushing gate, more crack emptying gate, rear concern sluice gate, finally all opens emptying gate, wash well after anti-order just note, avoid strata pressure fluctuation as far as possible.At present, this control procedure is leaned on Artificial Control entirely, concrete control procedure: one man operation well-washing truck well-flushing plunger displacement pump, control pressure and discharge capacity that well-flushing plunger displacement pump is exported, change the size of well-flushing plunger displacement pump gear and control engine throttle by operating personnel and carry out fuzzy realization, cannot realize accurate control.Particularly borehole pressure changes rapidly, relies on and manually within the extremely short time, makes a response and cannot realize at all.
3, the starting under load of well-flushing plunger displacement pump affects equipment life.Well-flushing plunger displacement pump is opened well-flushing outlet of plunger pump gate and well head inlet gate before starting, and highly pressurised liquid enters well-flushing plunger displacement pump exhaust manifold, makes the startup with pressure of well-flushing plunger displacement pump.
4, while causing borehole pressure higher than filling liquid pressure due to well-flushing plunger displacement pump exhaust manifold fault, easily cause liquid in well to return out from liquid injection end, easily cause borehole pressure fluctuation, ground damage layer, causes well-flushing failure.
5, cannot process the poly-pollutants such as polymer in water drive well flushing fluid that turn of note.The handling process of the polymer plugging well-washing truck in flushing fluid.
We have invented a kind of new intelligent self-loopa well well washing equipment for this reason, have solved above technical problem.
Summary of the invention
The object of this invention is to provide a kind of special intelligent type self-loopa well well washing equipment that utilizes sensing technology, PLC intelligent control technology to combine.
Object of the present invention can be achieved by the following technical measures: intelligent self-loopa well well washing equipment, this intelligent self-loopa well well washing equipment comprises flushing fluid circular processed portion and washing well process Based Intelligent Control processing section, this flushing fluid circular processed portion comprises well liquid treating system and working fluid dynamical system, this goes out well liquid treating system and is connected in this washing well process Based Intelligent Control processing section, and under the control of this washing well process Based Intelligent Control processing section by after flushing fluid desanding, carry out impurity separation by settling tank again, and the well liquid that goes out after impurity separation is filtered by coarse filter coarse filtration and fine filter essence, to clean flushing fluid, this working fluid dynamical system is connected in this washing well process Based Intelligent Control processing section, and under the control of this washing well process Based Intelligent Control processing section, regulate the rotating speed of its motor, to change the flushing fluid after clean the output of into high pressure working fluid as working fluid by flushing pump, realize well well-flushing.
Object of the present invention also can be achieved by the following technical measures:
This flushing fluid circular processed portion also comprises well liquid fluid infusion system, this goes out, and well liquid fluid infusion system is connected in this washing well process Based Intelligent Control processing section and this goes out well liquid treating system, and before well-flushing, go out well liquid treating system supplying clean circulation fluid from well main line to this by opening this make-up valve going out in well liquid fluid infusion system under the control of this washing well process Based Intelligent Control processing section, while occurring that in washing well process well outer circulation liquid is not enough, open this make-up valve and go out the feedwater of well liquid treating system and supplement to this from this well main line.
This flushing fluid circular processed portion also comprises well liquid control system, this goes out, and well liquid control system is connected in this washing well process Based Intelligent Control processing section and this goes out well liquid treating system, this goes out well liquid control system and is connected in the outlet end of well, to go out well liquid is transferred to this and goes out well liquid treating system, and monitor flushing fluid and go out well pressure value and flow signal, under the control of washing well process Based Intelligent Control processing section, adjust pressure and the discharge capacity of well liquid.
This goes out well liquid control system and comprises pressure sensor, ecp choke valve, flow transmitter and safety valve, stop up or system pressure while exceeding authorized pressure in flow process, this safety valve is opened, to carry out system decompression, this pressure sensor detects the force value of well liquid, and this force value is transferred to this washing well process Based Intelligent Control processing section, this flow transmitter detects flow signal, and this flow signal is transferred to this washing well process Based Intelligent Control processing section, the unlatching of this ecp choke valve is controlled in this washing well process Based Intelligent Control processing section, to adjust pressure and the discharge capacity of well liquid.
This settling tank comprises settling tank one-level chamber, three grades of chambeies of settling tank secondary chamber and settling tank, between this settling tank one-level chamber and this settling tank secondary chamber, be divided into two quasi-sovereign sedimentation chambers by the dividing plate of half tank body height, so that granular solid material gear residual in liquid is separated in this settling tank one-level chamber, this settling tank secondary chamber and this settling tank are full closeding clapboard between three grades of chambeies, enter three grades of chambeies of this settling tank to control solid granulates and suspension, the circulation of the liquid stream between three grades of chambeies of this settling tank secondary chamber and this settling tank completes by connecting pipeline, in this settling tank secondary chamber, there is secondary chamber liquid level sensor, this secondary chamber liquid level sensor detects the liquid level of this settling tank secondary chamber, and this liquid level is transferred to this washing well process Based Intelligent Control processing section, this washing well process Based Intelligent Control processing section is according to the connecting and disconnecting of the communicating valve on this this connecting pipeline of liquid level control.
This goes out well liquid treating system and also comprises the emptying and overflow line of secondary chamber, three grades of chambeies emptying and overflow line and overflow water storage tank, the emptying and overflow line of this secondary chamber and these three grades of chambeies are emptying and the liquid of overflow in this settling tank secondary chamber and three grades of chambeies of this settling tank is transported to this overflow water storage tank by overflow line.
This goes out well liquid treating system and also comprises settling tank one-level chamber blowoff valve, settling tank secondary chamber blowoff valve and three grades of chamber blowoff valves of settling tank, with the foreign material in emptying this settling tank one-level chamber, this settling tank secondary chamber and three grades of chambeies of this settling tank.
This goes out well liquid treating system and also comprises settling tank backwash pipeline, recoil flow process master control valve and recoil flow process settling tank washing control valve, this settling tank backwash pipeline is connected on this flushing pump, in the time opening this recoil flow process master control valve and this recoil flow process settling tank washing control valve, the highly pressurised liquid that utilizes this flushing pump to produce cleans the foreign material in this settling tank one-level chamber, this settling tank secondary chamber and three grades of chambeies of this settling tank.
This goes out well liquid treating system and also comprises flushing fluid storage tank, the front end of this flushing fluid storage tank is connected in this coarse filter, so that the well liquid that goes out after coarse filtration is stored and precipitation purification, this fine filter is connected to the liquid output of this flushing fluid storage tank, there is recoil cleaning function, and adopting laser slotted screen pipe to do filter core, slot width requires to determine according to well impurity screening.
This flushing fluid circular processed portion also comprises working fluid detection system, and this working fluid detection system goes out between well liquid treating system and this working fluid dynamical system, so that working fluid quality is detected at this.
This working fluid detection system comprises that clean flushing fluid bypass replenishment valve, flow transmitter and working fluid detect sampling gate, this working fluid detection system detects sampling gate by this working fluid and carries out the sampling of working fluid, this clean flushing fluid bypass replenishment valve is for supplementing clean flushing fluid, this flow transmitter is connected in this washing well process Based Intelligent Control processing section, and give this washing well process Based Intelligent Control processing section by the traffic transport of the working fluid of its detection, to regulate the rotating speed of this motor.
This working fluid dynamical system also comprises engine throttle controller, speed probe, working fluid pressure sensor, safety valve, the emptying control valve of plunger displacement pump and the emptying choke valve of plunger displacement pump, the tach signal of this motor is transferred to this washing well process Based Intelligent Control processing section by this speed probe, this engine throttle controller is passed through according to this tach signal in this washing well process Based Intelligent Control processing section, regulate this engine speed, the pressure of this this flushing pump output liquid of safety valve control, the emptying control valve of this plunger displacement pump and the emptying choke valve of this plunger displacement pump at this flushing pump toward before injecting flushing fluid in well, the highly pressurised liquid that utilizes this flushing pump to produce carries out emptying to the air of flushing pump output, this high pressure working fluid that this working fluid pressure sensor monitoring is exported from this flushing pump is in the force value entering well, and this force value is transferred to this washing well process Based Intelligent Control processing section, this washing well process Based Intelligent Control processing section is according to this this engine throttle controller of force value control, to regulate well-flushing discharge capacity or to send alarm signal, cut off engine power.
This flushing fluid circular processed portion also includes well liquid control system, and when this working fluid control system is used for preventing this flushing pump pressure lower than borehole pressure, in well, liquid returns out and causes this flushing pump difficulty in starting with pressure and protection well.
This working fluid control system comprises one way valve, high pressure cock valve, bypass valve is connected well head pipeline with working fluid, this one way valve enters in well this high pressure working fluid of this flushing pump output, do not allow liquid in well to return out, the break-make of this this high pressure working fluid of high pressure cock valve control, this bypass valve is emptying valve, this working fluid connects well head pipeline and is connected with well head joint, realizes the injection of this high pressure working fluid.
This washing well process Based Intelligent Control processing section comprises that data arrange module, the transmission of data disaply moudle and data and processing module, these data arrange module for flushing parameter is set, this data disaply moudle is for setting, inquiry and the demonstration of man-machine interactive system, and the transmission of these data and processing module are for data storing, report printing and data input and output.
This washing well process Based Intelligent Control processing section comprises Artificial Control and automatically controls handover module and password protection module; this Artificial Control is used for preventing illegally deleting or rewriting user program with switching and the operation of control handover module for carrying out Artificial Control and automatically controlling automatically, this password protection module.
Intelligent self-loopa well well washing equipment in the present invention, to water injection well washing well process pressure, discharge capacity and the Based Intelligent Control of time of the different geologic structures such as hyposmosis tight sand and loose sand.Intelligence well-washing truck performance meets the technology for washing well technical requirements that becomes more meticulous of different rock-layers and hole condition more; realize water injection well and downhole tool automatic protection functions; solve common self-circulation well flushing truck and process injection well and sand output well ability, and washing well process cannot carry out meticulous pressure, flow-control and cause the problem of well-flushing poor efficiency.Particularly, design intelligence control system by water flooding well washing truck exactly and according to technology for washing well technical requirements, micro-water supply, fluid infusion, well-flushing pressure versus flow, well-flushing of telling stage, equilibrium stage and stabilization sub stage in washing well process returned to hydraulic coupling and flow, settling tank liquid level, well-flushing plunger pump delivery and pressure, engine speed and power and strainer situation etc. and monitor, control, realize the intelligent well-flushing of water injection well.Intellectual water flooding well washing truck system of the present invention, has improved the control function of strict implement construction technology in oil field water well washing well process, improves well-washing truck water treatment ability, has automatically protected well and downhole tool, improves well well-flushing success rate.
Accompanying drawing explanation
Fig. 1 is the structure chart of a specific embodiment of flushing fluid circular processed portion in intelligent self-loopa well well washing equipment of the present invention;
The theory diagram of a specific embodiment of washing well process Based Intelligent Control processing section in Fig. 2 intelligent self-loopa well well washing equipment of the present invention;
Fig. 3 is the structure chart of the specific embodiment that goes out well liquid fluid infusion system in Fig. 1;
Fig. 4 is the structure chart of the specific embodiment that goes out well liquid control system in Fig. 1;
Fig. 5 is the structure chart of the specific embodiment that goes out well liquid detection system in Fig. 1;
Fig. 6 is the structure chart of the specific embodiment that goes out well liquid treating system in Fig. 1;
Fig. 7 is the structure chart of a specific embodiment of the working fluid detection 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.
The specific embodiment
For above and other object of the present invention, feature and advantage can be become apparent, cited below particularly go out preferred embodiment, and coordinate appended graphicly, be described in detail below.
Intelligent self-loopa well well washing equipment of the present invention comprises: flushing fluid circular processed portion and washing well process Based Intelligent Control processing section two large divisions.Wherein, flushing fluid circular processed portion mainly comprises intelligent well well washing equipment well-flushing flow process facility; Washing well process Based Intelligent Control processing section mainly comprises with the controller of PLC programming Control, sensor, actuator and software systems part.Two parts self-loopa well washing well process that cooperatively interacted.
As shown in Figure 1, Fig. 1 is the structure chart of a specific embodiment of flushing fluid circular processed portion in intelligent self-loopa well well washing equipment of the present invention.Flushing fluid circular processed portion comprises 7 ingredients: go out well liquid fluid infusion system 1, go out well liquid control system 2, go out well liquid detection system 3, go out well liquid treating system 4, working fluid detection system 5, working fluid dynamical system 6, working fluid control system 7.
As shown in Figure 3, Fig. 3 is the structure chart of the specific embodiment that goes out well liquid fluid infusion system 1 in Fig. 1.Go out well liquid fluid infusion system 1 and comprise make-up valve source of the gas 1-1, make-up valve control line 1-2, make-up valve actuator 1-3, liquid supplementation pipe line interface 1-4, make-up valve 1-5 and fluid infusion pipeline 1-6.Go out well liquid fluid infusion system 1 and be connected in washing well process Based Intelligent Control processing section, and under the control of washing well process Based Intelligent Control processing section before well-flushing prerequisite from well main line to well washing equipment supplying clean circulation fluid, can realize well head fluid synchronizes with well head injection liquid, guarantee the inside and outside liquid synchronous circulating of well, prevent first well head fluid, the well internal procedure of reinjecting occurs that in well, polymer is shaked out, tells in deficit; Meanwhile, while occurring in washing well process that well outer circulation liquid is not enough, can supplement by main line water.
The main line that liquid supplementation pipe line interface 1-4 is connected in well carrys out water pipeline, connect by union, for supplying with amount of liquid that necessary clean liquid or washing well process well return out in well-flushing forward direction tank body when injecting the liquid supply rate of well, open in time make-up valve 1-5, to settling tank 4-19 supplying clean liquid, realize settling tank liquid level in a basic balance.This make-up valve 1-5 is the withstand voltage 15Mpa ecp choke valve that is subject to PLC programming Control, in figure, make-up valve source of the gas 1-1 is the compressed air gas source of pressure 0.6～0.8Mpa, this compressed air provides the power of opening make-up valve 1-5, the make-up valve control line 1-2 that PLC intelligent control center connects sends fluid infusion signal and passes to make-up valve actuator 1-3, make-up valve source of the gas 1-1 supplies with ecp make-up valve compressed air, promote make-up valve 1-5 work, realizing make-up valve 1-5 opens, the degree (being circulation area) that open make-up valve-5 can arrange by PLC intelligence control system, the ratio of opening of make-up valve is set, realize the degree of opening according to the make-up valve of setting, liquid is entered to settling tank one-level chamber 4-1 from fluid infusion pipeline 1-6, give settling tank 4-19 feed flow, otherwise, close make-up valve 1-5, stop fluid infusion.
As shown in Figure 4, Fig. 4 is the structure chart of the specific embodiment that goes out well liquid control system 2 in Fig. 1.Go out well liquid control system 2 and comprise pressure sensor circuit 2-1, pressure sensor 2-2, go out well liquid pipe joint 2-3, ecp choke valve 2-4, ecp choke valve actuator 2-5, ecp choke valve source of the gas 2-6, ecp throttle valve control circuit 2-7, flow transmitter 2-8, flow transmitter circuit 2-9, go out well liquid Trunk Line 2-10, go out well liquid and detect by-pass line 2-11, go out well liquid limiting pressure control service main 2-12, hydrocyclone feed liquor pipeline 2-13, safety valve 2-14, safety valve limiting pressure tapping line 2-15.Going out well liquid control system 2 is connected in washing well process Based Intelligent Control processing section and goes out well liquid treating system 4, go out the outlet end that well liquid control system 2 is connected in well, to go out well liquid is transferred to this and goes out well liquid treating system 4, and monitor flushing fluid and go out well pressure value and flow signal, under the control of washing well process Based Intelligent Control processing section, adjust pressure and the discharge capacity of well liquid.
Go out well liquid control system 2 by the outlet end that goes out well liquid pipe joint 2-3 and be connected in well according to positive and negative well-flushing requirement, when positive well-flushing, be connected on the union that oil pipe gate connects, when backwash, be connected on the union that sleeve gate connects.Liquid returns out and mainly enters hydrocyclone entrance 4-3 from hydrocyclone feed liquor pipeline 2-13 afterwards in well; Stop up or system pressure while exceeding authorized pressure in flow process, the liquid safety valve 2-14 that flows through, safety valve 2-14 opens, and enters settling tank one-level chamber 4-1, and liquid directly enters system decompression by safety valve 2-14, guarantees construction safety; For comparing well washing effect, on pipeline, be provided with out well liquid and detect by-pass line 2-11, transfer out well liquid and provide well liquid detection system 3.Going out well liquid control system 2, emphasis is according to technology for washing well requirement, flushing fluid to be set well pressure value (being back pressure), keeps well hydraulic coupling stable, protection pit shaft and downhole tool.Go out well liquid control system 2 and be mainly provided with pressure sensor 2-2, detect the instantaneous pressure value of well head fluid, and the instantaneous pressure signal of collection is delivered to the PLC of control centre by pressure sensor circuit 2-1, be convenient to realize out well pressure control; Also be provided with withstand voltage 15Mpa ecp choke valve 2-4 in this system, when throttle one timing of motor 6-4, this ecp choke valve 2-4 adjusts well pressure by the aperture of controlling choke valve; When maintaining well-flushing circulation fluid outlet pressure (pressure sensor 2-2) timing, need to increase well-flushing discharge capacity, control centre sends and improves engine speed instruction, increases engine throttle, proportionally regulate withstand voltage 15Mpa ecp choke valve 2-4, realize the control of pressure and discharge capacity simultaneously.Meanwhile, in this system, be also provided with flow transmitter 2-8.By flow transmitter circuit, 2-9 constantly passes to PLC control system by the instantaneous flow rate signal detecting, as the foundation that regulates withstand voltage 15Mpa ecp choke valve 2-4 aperture size and adjusting engine throttle size.Ecp throttle valve control circuit 2-7 is connected with the PLC of control centre, the unlatching of this gate, close, and the control signal control of the size-controlled center P LC processed of aperture, this gate receives after control signal, the gas circuit of ecp choke valve 2-4 is opened, ecp choke valve 2-4 opens or closes according to a certain percentage, maintains equilibrium state to regulate well head to go out hydraulic coupling.Ecp choke valve source of the gas 2-6 is the compressed air of pressure 0.6～0.8Mpa, the ecp choke valve 2-4 that this source of the gas is withstand voltage 15Mpa provides compressed air, ecp throttle valve control circuit 2-7 is transferred to PLC intelligence control system by flow transmitter control circuit 2-9 by pressure controling signal by the force value that goes out well pressure sensor 2-8 detection gathering, by the pressure oscillation scope contrast of detected value and setting, export out well flow quantity control signal according to the difference of the two, give ecp choke valve actuator 2-5, ecp choke valve actuator 2-5 is according to the aperture of the withstand voltage 15Mpa ecp of certain travel proportional value control choke valve 2-4.Go out well liquid Trunk Line 2-10 for going out well liquid flow line, this pipeline is directly connected with hydrocyclone entrance 4-3.Go out well liquid Based Intelligent Control and be also embodied in the time passing in and out the liquid imbalance of well, the flow value contrast that PLC control system detects by going out well flow quantity sensor 2-8 and working fluid flow transmitter 5-3, determines it is increase discharge capacity or reduction discharge capacity.In the time that needs increase discharge capacity, PLC control system is sent lifting engine rotational speed signal, increases motor 6-4 throttle.This control signal is transferred to engine throttle controller 6-3 by engine oil gate control circuit 6-2, increases motor 6-4 throttle.In the time that needs reduce rotating speed, PLC control system is sent reduction engine rotational speed signal, reduces motor 6-4 throttle.This control signal is transferred to engine throttle controller 6-3 by engine oil gate control circuit 6-2, reduces motor 6-4 throttle.In motor 6-4 Throttle Opening Control process, first to know the transient speed of motor, this rotating speed is realized detection by the speed probe 6-5 being fixed on motor 6-4.The transient speed detecting passes to PLC control system along engine speed sensor circuit 6-6 in time, as the foundation of increase and decrease engine speed size.
In washing well process, in the time entering well array amount and be less than well array amount, the liquid in settling tank increases, and liquid level rises to be set when high-order, and system reduces the aperture of control valve automatically, reduces well head water yield; In the time entering well array amount and be greater than well array amount, liquid in well-flushing tank reduces, liquid level drops to while setting status, system strengthens the aperture of control valve automatically, increase well head water yield, if now cannot meet liquid level requirement, automatically to open make-up valve be the fluid infusion of well-flushing tank to system, reach and set a high position, make-up valve is closed.
As shown in Figure 5, Fig. 5 is the structure chart of the specific embodiment that goes out well liquid detection system in Fig. 1.Go out well liquid detection system 3 and comprise sample tap 3-1, go out well liquid water quality detection sampling gate 3-2, go out well liquid water quality detection regulating gate 3-3 and go out well hydraulic control water quality detection pipeline processed 3-4.Go out well liquid detection system 3 and be connected in out well liquid treating system 4, for detection of going out well liquid water quality.
Go out well liquid detection system 3 Trunk Lines for going out well hydraulic control water quality detection pipeline processed 3-4, on Trunk Line, there is the well of going out liquid water quality detection regulating gate 3-3, this gate is primarily implemented in and detects before well liquid water quality the liquid with foreign material accumulating in blowdown vessel first, to be opened go out after well liquid water quality detection regulating gate 3-3 circulating fluid, open out well liquid water quality detection sampling gate 3-2, extract well liquid sample liquid from sample tap 3-1 with sampling cup, realize out the water quality detection of well liquid.This sampling inspection results sampling liquid main and working fluid detection sampling gate 5-4 contrasts, to confirm well washing effect.In the present invention, the sampling liquid water quality at two places unanimously reach well washing effect.
As shown in Figure 6, Fig. 6 is the structure chart of the specific embodiment that goes out well liquid treating system in Fig. 1.Go out the major part that well liquid treating system 4 is these well washing equipments.Go out well liquid treating system 4 and comprise settling tank one-level chamber 4-1, secondary desanding swash plate 4-2, hydrocyclone entrance 4-3, hydrocyclone solid matter outlet 4-4, hydrocyclone liquid outlet 4-5, hydrocyclone liquid outlet line 4-6, one-level desanding swash plate 4-7, dividing plate 4-8, settling tank secondary chamber 4-9, emptying and the overflow line 4-10 of secondary chamber, secondary sedimentation chamber suspension separates dividing plate 4-11, secondary sedimentation chamber and three grades of sedimentation chamber connecting pipeline 4-12, secondary chamber liquid level sensor sense line 4-13, settling tank fluid level transmitter 4-14, three grades of dividing plate 4-15 of settling tank, emptying and the overflow line 4-16 in three grades of chambeies, three grades of chamber 4-17 of settling tank, settling tank backwash pipeline 4-18, settling tank tank body 4-19, settling tank output liquid pipeline 4-20, coarse filter 4-21, storage tank pipeline 4-22, flushing fluid storage tank content gauge 4-23, overflow water storage tank content gauge 4-24, flushing fluid storage tank 4-25, overflow water storage tank 4-26, overflow water storage tank 4-27, flushing fluid storage tank blowoff valve 4-28, flushing fluid storage tank liquid output pipe line 4-29, fine filter fluid inlet end regulating gate 4-30, the flushing fluid bypass valve 4-31 that meets an urgent need, fine filter blowoff valve 4-32, fine filter 4-33, fine filter liquid outlet end regulating gate 4-34, fine filter liquid output pipe line 4-35, pollution displaying valve 4-36, recoil flow process settling tank washing control valve 4-37, recoil flow process fine filter control valve 4-38, three grades of chamber blowoff valve 4-39 of settling tank, recoil flow process 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 treating system 4 and be connected in washing well process Based Intelligent Control processing section, and under the control of washing well process Based Intelligent Control processing section by after flushing fluid desanding, carry out impurity separation by settling tank again, and the well liquid that goes out after impurity separation is filtered by coarse filter coarse filtration and fine filter essence, to clean flushing fluid.
This part chief component is as follows:
1, desanding device.Comprise desanding swash plate in cyclone desanding device and tank body.Wherein, cyclone desanding device comprises hydrocyclone entrance 4-3, hydrocyclone solid matter outlet 4-4, hydrocyclone liquid outlet 4-5, and this device has sand water separation function; In tank body, desanding swash plate comprises one-level desanding swash plate 4-7 and secondary desanding swash plate 4-2.
2, well-flushing circulation fluid impurity separate and subside tank.This settling tank has three working chambers, respectively settling tank one-level chamber 4-1, settling tank secondary chamber 4-9, three grades of chamber 4-17 of settling tank, the shell of three working chambers is settling tank tank body 4-19, in three working chambers, settling tank one-level chamber 4-1 and settling tank secondary chamber 4-9 are divided into two quasi-sovereign sedimentation chambers by the dividing plate 4-8 of half tank body height.The effect of dividing plate is to stop granular solid material residual in liquid to continue to flow with circulation fluid, and granular solid material shelves are separated in settling tank one-level chamber 4-1; When liquid level in tank body exceedes after dividing plate, the suspension (as: aggregation, crude oil, rubbery chip, greasy filth etc.) that in well-flushing circulation fluid, density is lower enters settling tank secondary chamber 4-9 with circulation fluid; Between settling tank secondary chamber 4-9 and three grades of chamber 4-17 of settling tank, in tank body by with tank body in the identical full closeding clapboard in cross section, three grades of dividing plate 4-15 of settling tank are divided into separate sedimentation chamber.Object is to control the lower suspension of density in solid granulates and well-flushing circulation fluid to enter three grades of chamber 4-17 of settling tank with circulation fluid.Between secondary chamber and three grades of chambeies, the circulation of liquid stream is to be completed by the connecting pipeline outside tank body, on connecting pipeline, there are the liquid of control two or the three grades of chamber communicating valve 4-41 of disconnected settling tank that circulate, this communicating valve is electric control valve, the liquid level signal that communicating valve 4-41 break-make relies on secondary chamber liquid level sensor sense line 4-13 to provide is controlled, control and set minimum liquid level and the valve that communicating valve 4-41 opens and normally open liquid level region by PLC, realize the break-make control of automatically controlling secondary chamber and three grades of chamber liquid streams, and guarantee that the impurity in liquid stream does not enter three grades of chamber 4-17 of settling tank as far as possible.PLC provides signal according to secondary chamber liquid level sensor sense line 4-13, according to liquid level control height and the actual liquid level degree of contrast set, determines and controls communicating valve 4-41 connecting and disconnecting.The signal that the action of communicating valve switch is provided by communicating valve control circuit 4-43, passes to communicating valve actuator 4-42, connects (or disconnection) communicating valve source of the gas, realizes the break-make of communicating valve 4-41.
3, settling tank overflow and emptying.Emptying and the overflow line 4-16 in the emptying and overflow line 4-10 of secondary chamber and three grades of chambeies is the overflow ducts of liquid after being entirely full of in secondary chamber and three grades of intracavity gas passing aways and tank body, play the effect that prevents that tank body from building the pressure, overflow liquid enters overflow water storage tank 4-26.
4, settling tank inner tank wall is clean.Process in the tank body of settling tank 4-19 clean for guaranteeing three grades of flushing fluids, three chambeies are provided with respectively the sewage draining valve of 6 inch, respectively: settling tank one-level chamber blowoff valve 4-46, settling tank secondary chamber blowoff valve 4-45, three grades of chamber blowoff valve 4-39 of settling tank, the dirt in each chamber is discharged three grades of flushing fluids with highly pressurised liquid and processed sedimentation tank body 4-19.The mode of blowdown has two kinds: the first is nature blowdown, only need open blowoff valve, relies on remaining liquid in tank body carrying outside the foreign material drain tank in tank body.The second is power blowdown.For realizing the discharge of three sedimentation chamber foreign material in sedimentation tank body 4-19, be specially provided with settling tank backwash pipeline 4-18, this pipeline is 2 inch half anti-corrosive steel tubes, and this pipeline is connected on well-flushing plunger displacement pump 6-1, through sedimentation tank body 4-19 tank skin and two dividing plates, tank body gut line is cellular.When recoil settling tank, start well-flushing plunger displacement pump 6-1, open recoil flow process master control valve 4-40 and recoil flow process settling tank washing control valve 4-37, close recoil flow process fine filter control valve 4-38, the highly pressurised liquid of well-flushing plunger displacement pump 6-1 output enters three chambeies in tank body, highly pressurised liquid is jetting in the form of a ring, cleans inner tank wall foreign material, realizes the clean of settling tank inner tank wall.
5, further clean (coarse filtration) of flushing fluid.At three grades of chambeies place of settling tank tank body 4-19, draw settling tank output liquid pipeline 4-20, on this pipeline, connecting coarse filter 4-21, its structure is Y type, convenient to isolated foreign material taking-up in pipeline, realization enters the flushing fluid storage tank 4-25 further filtration of impurity before, and the liquid after filtration enters flushing fluid storage tank 4-25 and stores and precipitation purification along coarse filter to storage tank pipeline 4-22.Flushing fluid storage tank 4-25 top and overflow water storage tank 4-26 top are all provided with content gauge, are respectively flushing fluid storage tank content gauge 4-23 and overflow water storage tank content gauge 4-24.There is overflow water storage tank 4-27 and flushing fluid storage tank blowoff valve 4-28 in the bottom of two water tanks.
6, the fine filtering of flushing fluid (essence filter).The liquid storing in flushing fluid water tank 4-25 flows out in flushing fluid water tank 4-25, also needs, by fine filter 4-33, flushing fluid was carried out to further meticulous clean filtration before entering well-flushing plunger displacement pump.Fine filter 4-33 has a recoil cleaning function.This fine filter 4-33 adopts laser slotted screen pipe to do filter core, and slot width requires to determine according to well impurity screening.According to the requirement of well well-flushing, cut out satisfactory circumferential axial slits with laser, guarantee that the block impurity such as graininess impurity and rubber that is greater than slot width is blocked in outside the filter core of fine filter 4-33.Fine filter filter core outer cover fine filter case, has the impurity storage area of ring-type, and clean liquid stream flows out from the outlet end of fine filter 4-33 by the filter core of fine filter 4-33.In fine filter 4-33 duty, fine filter fluid inlet end regulating gate 4-30 and fine filter liquid outlet end regulating gate 4-34 open, the emergent bypass valve 4-31 of recoil flow process fine filter control valve 4-38 and fine filter blowoff valve 4-32 and flushing fluid closes, after flushing fluid filters by fine filter, along fine filter liquid output pipe line, 4-35 enters well-flushing plunger displacement pump 6-1.Being provided with at the outlet end shell of fine filter is pollution displaying valve 4-36(pressure vacuum gauge), utilize the vacuum values detecting to determine the degree of contamination of fine filter.Its principle is that fine filter stops up, and the vacuum that pollution displaying valve 4-36 detects is just larger, and therefore, vacuum signal is the important evidence of determining that whether fine filter cleans.Another liquid feeding channel in parallel with fine filter 4-33, is provided with the emergent bypass valve 4-31 of flushing fluid, and this passage is under the serious stopping state of fine filter 4-33, for not affecting the ad hoc emergent regulating gate of bypass of continuity of washing well process liquid-circulating.Under normal circumstances, the emergent bypass valve 4-31 of this flushing fluid is in closed condition.Under emergency rating, the emergent bypass valve 4-31 of flushing fluid opens, and fine filter fluid inlet end control valve 4-30 in fine filter flow process and fine filter liquid outlet control valve 4-34 be in closed condition, and fine filter blowoff valve 4-32 is in closed condition.When after the serious obstruction of fine filter 4-33, can utilize the power of well-flushing plunger displacement pump 6-1 to carry out back flush to the foreign material of fine filter 4-33 filter core, open fine filter blowoff valve 4-32, remove fine filter foreign material, realize the clean of fine filter.
As shown in Figure 7, Fig. 7 is the structure chart of a specific embodiment of the working fluid detection system in Fig. 1.Working fluid detection system 5 detects sampling gate 5-4 by clean flushing fluid bypass replenishment valve 5-1, flow transmitter sense line 5-2, flow transmitter 5-3, working fluid and forms.Working fluid detection system 5 is that working fluid quality is detected, and contrasts with going out the quality examination of well liquid, determines well washing effect.
Clean flushing fluid bypass replenishment valve 5-1 can realize tank car supplying clean liquid, supplements clean flushing fluid.Flow signal and PLC intelligent control center that flow transmitter 5-3 gathers are realized information interchange by flow transmitter sense line 5-2, for PLC control engine 6-4 rotating speed provides decision-making foundation.In the time that well-flushing plunger displacement pump discharge capacity is not enough, the engine speed detecting according to engine speed sensor 6-5, PLC intelligent control center sends motor and improves tach signal, each lifting 50 turns, within 0.5 second, carry out one-time detection, when not enough, continue to promote engine speed, until motor arrives the rotating speed of regulation discharge capacity.Otherwise in the time that well-flushing plunger displacement pump discharge capacity is too high, motor reduces rotating speed, until motor arrives 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 dynamical system 6 is mainly by well-flushing plunger displacement pump 6-1, engine throttle controller control circuit 6-2, engine throttle controller 6-3, motor 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, the compositions such as the emptying control valve 6-10 of well-flushing plunger displacement pump and the emptying choke valve 6-11 of well-flushing plunger displacement pump.Working fluid dynamical system 6 is connected in washing well process Based Intelligent Control processing section, and under the control of washing well process Based Intelligent Control processing section, regulates the rotating speed of its motor, to change the flushing fluid after clean into highly pressurised liquid output, realizes well well-flushing.
Wherein, motor 6-4, for well-flushing plunger displacement pump 6-1 provides power, by well-flushing plunger displacement pump 6-1 work, produces highly pressurised liquid output, realizes well well-flushing.Speed probe 6-5 is installed on motor, on speed probe, has engine speed sensor sense line 6-6, tach signal is passed to PLC intelligent control center in time.Meanwhile, the supporting engine throttle controller 6-3 that installed also on motor, engine throttle controller control circuit 6-2 is connected with PLC intelligent control center is supporting, receives the control signal of PLC intelligent control center output, regulates engine speed.Well-flushing plunger displacement pump high-voltage output end is provided with safety valve 6-9, and this safety valve is mainly the pressure of controlling well-flushing plunger displacement pump output liquid, guarantees construction technology and device security.With the emptying choke valve 6-11 of the emptying control valve 6-10 of well-flushing plunger displacement pump well-flushing plunger displacement pump that connected on the pressure duct vent line of safety valve 6-9 parallel connection, these two valves are respectively high pressure cock valve and high-pressure needle valve.Toward before injecting flushing fluid in well, need to first start well-flushing plunger displacement pump at well-flushing plunger displacement pump, utilize highly pressurised liquid to carry out the air of well-flushing plunger displacement pump output emptying, guarantee that output liquid is stable.Working fluid pressure sensor 6-8 be responsible for dynamic monitoring from the liquid of well-flushing plunger displacement pump 6-1 output in the force value entering well, dynamically show, and by working fluid pressure sensor sense line 6-7, the well pressure signal that enters of flushing fluid is passed to PLC functional control center, PLC functional control centre junction Heshui well working fluid end with go out well liquid end pressure and relatively carry out control engine throttle adjustment well-flushing discharge capacity or send alarm signal, cut off if desired engine power.
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 control system 7 comprises one way valve 7-1, high pressure cock valve 7-2, and bypass valve 7-3, working fluid connects well head pipeline 7-4.Working fluid control system 7 be when preventing well-flushing plunger displacement pump pressure lower than borehole pressure in well liquid return out and cause well-flushing plunger displacement pump difficulty in starting with pressure and protection well, prevent that borehole pressure fluctuation from causing well-flushing failure.
This system is mainly provided with one way valve 7-1, and this valve only allows the output of well-flushing plunger displacement pump highly pressurised liquid to enter in well, does not allow liquid in well to return out; High pressure cock valve 7-2 controls the break-make of well-flushing plunger displacement pump output liquid; Bypass valve 7-3 is emptying valve, and after well-flushing, closed-in well port strobe need to leave bypass valve 7-3 and carry out emptying.It is 2 inch high-pressure hose lines that working fluid connects well head pipeline 7-4, is connected with well head joint, realizes the injection of flushing fluid.
As shown in Figure 2, the theory diagram of a specific embodiment of washing well process Based Intelligent Control processing section in Fig. 2 intelligent self-loopa well well washing equipment of the present invention.
In one embodiment, this washing well process Based Intelligent Control processing section adopts the PLC intelligent controller of SIMATIC-300, has with lower module:
(1) data arrange module.Operating personnel are according to technology for washing well designing requirement input washing technology parameter.Such as: go out well liquid controlled pressure, washing well process uninterrupted, duration of well flushing, the control of settling tank height of liquid level, go out the control of well hydraulic control valve and make-up valve aperture etc., can control parameter be set by the touch-screen of PLC controller, realize dynamically control.
(2) data disaply moudle.Man-machine interface service easily has been integrated in the operating system of S7-300, therefore interactive programming requires to greatly reduce.SIMATIC man-machine interface (HMl) obtains data from S7-300, and the refresh rate that S7-300 specifies by user transmits these data.S7-300 operating system is the transmission of deal with data automatically.Having man-machine interactive system shows and system setting and inquiry, Presentation Function is set.
(3) the transmission of data and processing module.This controller PLC system has data storing, report printing and data input/output function.Data storing meets the storage of 15 wells time above well-flushing data; It is distinct that report printing can make well-flushing quality obtain whole process supervision, quality tracing and responsibility; Data input and output are convenient to Water Injection Engineering technician analysis and are optimized technology for washing well schematic design, improve design level and ability.Receive and be arranged on the information of well-flushing flow process by each sensor, then carry out A/D module converts by PLG intelligence control system, with parameters compared with control, then send control signal.Such as: according to going out well hydraulic coupling control setup parameter, PLC control system is receiving after the well head pressure signal of collection, finds to have deviation with settings, as bigger than normal in pressure, and output increases the signal of ecp gatage, and gatage value is provided.Otherwise output reduces ecp gatage signal, and gatage value is provided.
(4) PLC Artificial Control and the automatic handover module of controlling.System operation is mainly switching and the operation of PLC Artificial Control and control automatically.System operation when Artificial Control emphasis is well-flushing front and back and troubleshooting; Automatically controlling emphasis is the control in washing well process.
(5) password protection module: multistage password protection can make user highly, effectively protect its technology secret; prevent copying and revising without permission; mode of operation selector switch: mode of operation selector switch can be extracted as key, in the time that key is extracted, just can not change mode of operation.So just prevent the illegal user program of deleting or rewrite.
(6) overhigh pumping pressure protection.The overhigh pumping pressure of well-flushing plunger displacement pump has two kinds of situations: a kind of is the design limit pressure that limiting pressure has exceeded well-flushing plunger displacement pump, jeopardizes equipment and personal security, needs limiting pressure protection.Limiting pressure protection is controlled by the safety valve 6-9 of working fluid dynamical system, and this safety valve is shear pin formula safety valve, shear pin fracture after superpressure, and bypass earial drainage, reduces pressure, guarantees safety; Another kind is working design pressure protect.According to technological requirement, before construction, input construction control force value by PLC control system panel, in work progress, pass through working fluid pressure sensor 6-8 dynamic monitoring working fluid pressure, by working fluid pressure sensor sense line 6-7, the well pressure signal that enters of flushing fluid is passed to PLC functional control center, PLC functional control centre junction Heshui well working fluid end with go out well liquid end pressure and relatively carry out control engine throttle adjustment well-flushing discharge capacity or send alarm signal, cut off if desired engine power.
(7) the too high alarm and protection of liquid level.For guaranteeing the relatively stable of washing well process turnover well liquid, settlement prevention pot liquid too much overflows and pollutes, be provided with settling tank fluid level transmitter 4-14 at settling tank tank body top, gather signal is provided by secondary chamber liquid level sensor sense line 4-13, PLC intelligence control system is according to the liquid level control height and actual liquid level degree of contrast set, the liquid level of design is divided into: low liquid level, high liquid level, three of the high liquid levels of the limit are controlled liquid level, when liquid level belongs to normal work liquid level between low liquid level and high liquid level; When liquid level is higher than high liquid level, and while not reaching capacity high liquid level, LPC control system regulates well rate of discharge by the aperture of turning down ecp choke valve 2-4 on the one hand, on the other hand simultaneously by adjusting engine speed change well-flushing plunger displacement pump discharge capacity, make washing well process meet design technology the control that requires to realize high liquid level.When liquid level is during in the high liquid level of the limit, show that the risk of overflow settling tank is very large, now, the transmission of PLC intelligent check system reduces engine speed, and cuts off the order of well-flushing plunger displacement pump power, realizes the automatic protection under limit liquid level.
In one embodiment, intelligent well-flushing flow process is as follows:
(1) before well-flushing, manifold connects.According to technology for washing well requirement, according to political affairs well-flushing and the requirement of anti-flushing well connecting line, the high-pressure hose of intelligent well well washing equipment is connected with oil pipe gate and the sleeve gate of well respectively.
(2) setting and the control of intelligence system before well-flushing
According to technology for washing well requirement, by PLC intelligent controller touch-screen, flushing parameter is set: the parameter such as time of well-flushing, three stage flows, well outlet pressure, well-flushing type, the highest well-flushing pressure, settling tank liquid level, engine peak speed.This parameter offers PLC intelligent controller as controlled quentity controlled variable.
Fluid infusion control section before well-flushing.Liquid level sensor by settling tank tank deck gathers tank level signal, by the low liquid level of settling tank, high liquid level and limit liquid level are set, controls fluid infusion process in tank body by PLC.Fluid infusion is supplemented by main line water, when liquid level lower than arrange low liquid level time, fluid infusion gate is opened with larger opening, give the fluid infusion of well-flushing settling tank; When liquid level is between low liquid level and high liquid level, by the aperture of PLC control system control fluid infusion gate, reduce liquid supply rate; When liquid level exceedes after high liquid level, fluid infusion gate stops feed flow; In the time overstepping the extreme limit a high position, send alarm signal, manually stop feed flow.
The switch control of communicating valve.Communicating valve is normal closed gate, and, before well-flushing, communicating valve is closed, and when liquid level reaches after desired location, ecp communicating valve is opened, and realizes settling tank the second chamber to settling tank the 3rd chamber feed flow.When liquid level in tank body reduces, during lower than the low liquid level of setting, communicating valve is closed, and stops settling tank the second chamber to settling tank the 3rd chamber feed flow.
In fluid infusion process, system occurs that when abnormal, changeover switch is pushed manual position by operating personnel, then by artificial remote opening, close corresponding control valve, auto-programming stops.
(3) well-flushing plunger displacement pump is emptying
Ato unit, manual unlocking exhaust-valve low cruise well-flushing plunger displacement pump, gets rid of air in flow process and pump, after pump liquid is normal, progressively closes exhaust-valve, and well-flushing plunger displacement pump pumps liquid and overcomes one way valve resistance to low discharge feed flow in well in engine idle situation.
(4) intelligent well washing well process control
1. automatic start-up course (promoting well-flushing discharge capacity process).The emptying rear small displacement of well-flushing plunger displacement pump, to pump liquid in well, is now opened well water outlet gate.Observing well washing equipment and well flow process has or not extremely, confirming in N/R situation, possess after the external condition of well-flushing, switch to auto state, press " beginning well-flushing " button, motor starts speed-raising, within " the speed-raising time " set, the every lifting 50 of motor turns waits for 0.5s, system detects well-flushing outlet of plunger pump discharge capacity automatically, pressure and well outlet pressure, discharge capacity, adjust the aperture of well speed control muffler, maintain well outlet pressure, so go round and begin again, linearity raises speed to well-flushing outlet of plunger pump discharge capacity and reaches " first stage well-flushing discharge capacity ", enter the formal well-flushing first stage.
2. well-flushing first stage (micro-telling the stage) set of time 2h, the micro-amount of telling of standard-required is controlled in 3m3/h, and the size of micro-amount of telling regulates the aperture of choke valve to adjust micro-amount of telling by setting out well pressure.
3. well-flushing second stage (balance well-flushing stage).Micro-ly tell the well-flushing stage and reach after setup times, intelligence control system auto linear improves engine speed, makes well-flushing plunger displacement pump discharge capacity reach " second stage well-flushing discharge capacity ", the well-flushing second stage that enters constant pressure and flow.
4. the well-flushing phase III (stablizing the well-flushing stage).The balance well-flushing stage reaches after setup times, intelligence control system auto linear improves engine speed, make well-flushing plunger displacement pump discharge capacity reach " phase III well-flushing discharge capacity ", enter the well-flushing phase III of constant pressure and flow, stable well-flushing reaches after setting-up time, it is consistent with discharge capacity that contrast detects well Inlet and outlet water water quality, and well-flushing is qualified.
5. fluid infusion control in washing well process.The open and close of make-up valve are automatically to be controlled by PLC system according to settling tank height of liquid level, guarantee that the amount of liquid in settling tank is relatively stable, reach filtration and effect of settling the best of flushing fluid.In washing well process, due to the variation of geological conditions and the well-flushing pressure on water filling stratum, it is stable that the liquid measure in well-flushing tank is difficult to keep.In order to guarantee the steady and well-flushing quality of well-flushing, maintained in scope of design by the liquid measure of automatic control well-flushing tank by PLC system.In the time that well-flushing outlet of plunger pump flow is greater than well rate of discharge, formation leakage is described, at this moment a part for flushing fluid is injected stratum, liquid measure in well-flushing tank gradually reduces, and the minimizing of liquid measure must cause the decline of liquid level, the liquid level signal that PLC system Real-Time Monitoring fluid level transmitter sends, when liquid level drops to design when the next, system is opened make-up valve automatically to fluid infusion in well-flushing tank, and fluid infusion liquid measure reaches well-flushing tank and designs when upper, and system is closed make-up valve automatically.
6. well-flushing finishes.After well-flushing is qualified, press " deceleration ", according to " automatically starting ", return order is carried out engine retard to control system, but still constant pressure self-controlled of well discharge pressure, motor is reduced to after idling, closes well flowing water Valve, engine misses, and well-flushing finishes.
7. dismantle well-flushing flow process pipeline, construction finishes.
Claims (10)
1. intelligent self-loopa well well washing equipment, it is characterized in that, this intelligent self-loopa well well washing equipment comprises flushing fluid circular processed portion and washing well process Based Intelligent Control processing section, this flushing fluid circular processed portion comprises well liquid treating system and working fluid dynamical system, this goes out well liquid treating system and is connected in this washing well process Based Intelligent Control processing section, and under the control of this washing well process Based Intelligent Control processing section by after flushing fluid desanding, carry out impurity separation by settling tank again, and the well liquid that goes out after impurity separation is filtered by coarse filter coarse filtration and fine filter essence, to clean flushing fluid, this working fluid dynamical system is connected in this washing well process Based Intelligent Control processing section, and under the control of this washing well process Based Intelligent Control processing section, regulate the rotating speed of its motor, to change the flushing fluid after clean the output of into high pressure working fluid as working fluid by flushing pump, realize well well-flushing.
2. intelligent self-loopa well well washing equipment according to claim 1, it is characterized in that, this flushing fluid circular processed portion also comprises well liquid fluid infusion system, this goes out, and well liquid fluid infusion system is connected in this washing well process Based Intelligent Control processing section and this goes out well liquid treating system, and before well-flushing, go out well liquid treating system supplying clean circulation fluid from well main line to this by opening this make-up valve going out in well liquid fluid infusion system under the control of this washing well process Based Intelligent Control processing section, while occurring that in washing well process well outer circulation liquid is not enough, opening this make-up valve goes out well liquid treating system feedwater and supplements to this from this well main line.
3. intelligent self-loopa well well washing equipment according to claim 1, it is characterized in that, this flushing fluid circular processed portion also comprises well liquid control system, this goes out, and well liquid control system is connected in this washing well process Based Intelligent Control processing section and this goes out well liquid treating system, this goes out well liquid control system and is connected in the outlet end of well, to go out well liquid is transferred to this and goes out well liquid treating system, and monitor flushing fluid and go out well pressure value and flow signal, under the control of washing well process Based Intelligent Control processing section, adjust pressure and the discharge capacity of well liquid.
4. intelligent self-loopa well well washing equipment according to claim 3, it is characterized in that, this goes out well liquid control system and comprises pressure sensor, ecp choke valve, flow transmitter and safety valve, stop up or system pressure while exceeding authorized pressure in flow process, this safety valve is opened, to carry out system decompression, this pressure sensor detects the force value of well liquid, and this force value is transferred to this washing well process Based Intelligent Control processing section, this flow transmitter detects flow signal, and this flow signal is transferred to this washing well process Based Intelligent Control processing section, the unlatching of this ecp choke valve is controlled in this washing well process Based Intelligent Control processing section, to adjust pressure and the discharge capacity of well liquid.
5. intelligent self-loopa well well washing equipment according to claim 1, it is characterized in that, this settling tank comprises settling tank one-level chamber, three grades of chambeies of settling tank secondary chamber and settling tank, between this settling tank one-level chamber and this settling tank secondary chamber, be divided into two quasi-sovereign sedimentation chambers by the dividing plate of half tank body height, so that granular solid material gear residual in liquid is separated in this settling tank one-level chamber, this settling tank secondary chamber and this settling tank are full closeding clapboard between three grades of chambeies, enter three grades of chambeies of this settling tank to control solid granulates and suspension, the circulation of the liquid stream between three grades of chambeies of this settling tank secondary chamber and this settling tank completes by connecting pipeline, in this settling tank secondary chamber, there is secondary chamber liquid level sensor, this secondary chamber liquid level sensor detects the liquid level of this settling tank secondary chamber, and this liquid level is transferred to this washing well process Based Intelligent Control processing section, this washing well process Based Intelligent Control processing section is according to the connecting and disconnecting of the communicating valve on this this connecting pipeline of liquid level control.
6. intelligent self-loopa well well washing equipment according to claim 5, it is characterized in that, this goes out well liquid treating system and also comprises the emptying and overflow line of secondary chamber, three grades of chambeies emptying and overflow line and overflow water storage tank, the emptying and overflow line of this secondary chamber and these three grades of chambeies are emptying and the liquid of overflow in this settling tank secondary chamber and three grades of chambeies of this settling tank is transported to this overflow water storage tank by overflow line.
7. intelligent self-loopa well well washing equipment according to claim 5, it is characterized in that, this goes out well liquid treating system and also comprises settling tank one-level chamber blowoff valve, settling tank secondary chamber blowoff valve and three grades of chamber blowoff valves of settling tank, with the foreign material in emptying this settling tank one-level chamber, this settling tank secondary chamber and three grades of chambeies of this settling tank.
8. intelligent self-loopa well well washing equipment according to claim 7, it is characterized in that, this goes out well liquid treating system and also comprises settling tank backwash pipeline, recoil flow process master control valve and recoil flow process settling tank washing control valve, this settling tank backwash pipeline is connected on this flushing pump, in the time opening this recoil flow process master control valve and this recoil flow process settling tank washing control valve, the highly pressurised liquid that utilizes this flushing pump to produce cleans the foreign material in this settling tank one-level chamber, this settling tank secondary chamber and three grades of chambeies of this settling tank.
9. intelligent self-loopa well well washing equipment according to claim 1, it is characterized in that, this goes out well liquid treating system and also comprises flushing fluid storage tank, the front end of this flushing fluid storage tank is connected in this coarse filter, so that the well liquid that goes out after coarse filtration is stored and precipitation purification, this fine filter is connected to the liquid output of this flushing fluid storage tank, has recoil cleaning function, and adopting laser slotted screen pipe to do filter core, slot width requires to determine according to well impurity screening.
10. intelligent self-loopa well well washing equipment according to claim 1, it is characterized in that, this flushing fluid circular processed portion also comprises working fluid detection system, this working fluid detection system goes out between well liquid treating system and this working fluid dynamical system, so that working fluid quality is detected at this.
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| CN104806183A (en) * | 2014-01-23 | 2015-07-29 | 山东海吉雅环保设备有限公司 | Oil field well washing backflow fluid depressurization and muddy sand removal device |
| CN106223877A (en) * | 2016-08-12 | 2016-12-14 | 中国石油大学(华东) | The automatic well washing apparatus of coal bed gas well |
| CN107489384A (en) * | 2016-06-13 | 2017-12-19 | 中国石油化工股份有限公司 | A kind of skid-mounted type workover treatment flushing fluid recycling device and method |
| CN109611042A (en) * | 2019-01-08 | 2019-04-12 | 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 | A kind of automatic well washing apparatus of coal bed gas well |
| CN110792403A (en) * | 2018-08-02 | 2020-02-14 | 中国石油天然气股份有限公司 | Well washing method and equipment |
| CN113818824A (en) * | 2021-09-16 | 2021-12-21 | 中煤科工集团重庆研究院有限公司 | Pneumatic movable mining drilling flushing fluid recycling device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104806183A (en) * | 2014-01-23 | 2015-07-29 | 山东海吉雅环保设备有限公司 | Oil field well washing backflow fluid depressurization and muddy sand removal device |
| 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 |
| CN107489384A (en) * | 2016-06-13 | 2017-12-19 | 中国石油化工股份有限公司 | A kind of skid-mounted type workover treatment flushing fluid recycling device and method |
| CN106223877A (en) * | 2016-08-12 | 2016-12-14 | 中国石油大学(华东) | The automatic well washing apparatus of coal bed gas well |
| 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 |
| CN110792403A (en) * | 2018-08-02 | 2020-02-14 | 中国石油天然气股份有限公司 | Well washing method and equipment |
| CN109611042A (en) * | 2019-01-08 | 2019-04-12 | 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 | A kind of automatic well washing apparatus of coal bed gas well |
| 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 |
| CN113818824A (en) * | 2021-09-16 | 2021-12-21 | 中煤科工集团重庆研究院有限公司 | Pneumatic movable mining drilling flushing fluid recycling device |
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| CN103912226B (en) | 2018-03-30 |
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