CN108789848A - A kind of premixing system of remote control - Google Patents

Abstract

The invention discloses a kind of premixing systems of remote control, including control unit, water valve, flowmeter, grey valve, slurry mixing tank, liquid level gauge, slurry device, densitometer and plunger pump, water supply passes sequentially through flowmeter and water valve enters in slurry mixing tank, entered in slurry mixing tank by grey valve for ash, liquid level gauge is located in slurry mixing tank, the clear water total amount in slurry mixing tank is measured with flowmeter jointly with metering clear water, slurry device is used for the slurry of slurry mixing tank, densitometer is located on slurry mixing tank circulation line, for monitoring the grey pulp density in slurry mixing tank, control unit passes through flowmeter, liquid level gauge, the real time data of densitometer and plunger pump feedback controls water valve, the opening and closing of grey valve and plunger pump.Advantageous effect：Realize that long-range cementing equipment monitoring, long-range liquid automatic control, remote automatic-taking-water, remote auto automatically control and remote auto discharge capacity for ash, remote auto premix, long-range density.

Description

A kind of premixing system of remote control

Technical field

The invention belongs to petroleum equipment fields, and in particular to a kind of premixing system of remote control.

Background technology

Traditional premix controls：Cementing equipment operating personnel manually control according to the density requirements situation of cementing equipmentWater valve supplies water, grey valve is for ash, when reaching requirement density, stops premix, and into normal operation, in the process, personnel's operation is numerousIt is trivial, it is more demanding to the operation of operating personnel.And traditional well cementing operation manipulator stands in equipment always, from plunger pump andHigh pressure pipe joint only has one step away.When carrying out some deep-level high pressure well cementing operations, the high pressure of tens megapascal threatens always behaviourMake the person and life security of personnel.

Cooperation between the equipment in the present entire well site of well cementing operation is poor, the degree of automation is low.

It is more and more extensive with being applied in cementing equipment at home and abroad wellsite operation, operating mode complexity and the evil of well cementing operationPessimum makes cementing equipment in operation process, requires the intelligence of operation, centralized control higher and higher.

Therefore, either consider from the safety of operating personnel, still meet the automation operated in well cementing operation, conformabilityWith convenience requirement, it would be highly desirable to a kind of premixing system of remote control makes operating personnel far from noisy and high pressure operating environment,Cement the well in measuring truck, realize long-range cementing equipment monitoring, long-range liquid automatic control, remote automatic-taking-water, remote auto for it is grey,Remote auto premix, long-range density automatically control with remote auto discharge capacity, so that well cementing operation has been strided forward major step in security fields,Also greatly improve the automation technolo level entirely cemented the well.

Invention content

The purpose of the present invention is overcoming the deficiencies of the prior art and provide a kind of premixing system of remote control, make operatorMember is far from noisy and high pressure operating environment, in measuring truck of cementing the well, realizes that long-range cementing equipment monitoring, long-range liquid level are controlled automaticallySystem, remote automatic-taking-water, remote auto for ash, remote auto premix, long-range density automatically control with remote auto discharge capacity, make solidWell operations have strided forward major step in security fields, also greatly improve the automation technolo level entirely cemented the well.

The present invention is achieved by the following technical solutions：A kind of premixing system of remote control, including control unit, waterValve, flowmeter, grey valve, slurry mixing tank, liquid level gauge, slurry device, densitometer and plunger pump, water supply pass sequentially through the flowmeter andWater valve enters in slurry mixing tank, is entered in slurry mixing tank by grey valve for ash, and liquid level gauge is located in slurry mixing tank, with metering clear water flowClear water total amount in the common metering slurry mixing tank of meter, slurry device are used for the slurry of slurry mixing tank, and densitometer is located at slurry mixing tank circulation pipeOn the road, for monitoring the grey pulp density in slurry mixing tank, control unit controls water valve aperture reality by the data of flowmeter, liquid level gaugeNow automatic to supply water on demand, control unit realizes that, automatically for ash, control unit passes through pre-set density, control by controlling grey valve openingThe unlatching of slurry device and densitometer realize automatic premixing to the monitoring passback of real time data, and control unit is by controlling plungerThe rotating speed of pump and default discharge capacity realize automatic displacement on demand.

Preferably, control unit includes remote control unit, and remote control unit is by far controlling PLC processor and remote-control operationScreen composition, by realizing remote control to the operation of remote-control operation screen.

Preferably, control unit further includes equipment end control unit, and equipment end control unit is located at well cementing operation scene, ifStandby end control unit is made of equipment end PLC processor and equipment end operator control panel, passes through the operation realization to equipment end operator control panelThe field control of cementing equipment.

Preferably, far control PLC processor one end is connect with remote-control operation screen, remote to control the PLC processor other end and equipment endPLC processor connects, and remote-control operation screen is communicated by Ethernet and equipment end control unit.

Preferably, when automatic premixing, water and ash in the slurry mixing tank pass sequentially through slurry device and densitometer returns againIt returns in slurry mixing tank.

Preferably, first set density value, when the density that the densitometer monitors with setting density value it is identical, and maintain 10Second or more when, control unit judgement automatic premixing terminate and close slurry device.

Preferably, slurry device is circulating pump.

Preferably, it is additionally provided with monopod video camera at cementing equipment scene, for being monitored to cementing equipment scene, and led toIt crosses hard disk video recorder to be recorded, video can export, for checking field operation situation and slurry mixing effect in the future.

Compared with prior art, beneficial effects of the present invention：Make operating personnel far from noisy and high pressure operating environment,It cements the well in measuring truck, long-range cementing equipment monitoring, long-range liquid automatic control, remotely is realized to the slurry flow in well cementing operationAutomatic water-supply, remote auto for ash, remote auto premix, long-range density automatically control with remote auto discharge capacity, make well cementing operationMajor step has been strided forward in security fields, has also greatly improved the automation technolo level entirely cemented the well.

Description of the drawings

Fig. 1 is the functional block diagram of the premixing system of remote control.

Specific implementation mode

As shown in Figure 1, a kind of premixing system of remote control, including it is control unit, water valve 3, flowmeter 5, grey valve 4, mixedTank 6, liquid level gauge, slurry device, densitometer 8 and plunger pump 9 are starched, water supply passes sequentially through the flowmeter 5 and water valve 3 enters slurryIn tank 6, entered in slurry mixing tank 6 by grey valve 4 for ash, liquid level gauge is located in slurry mixing tank 6, common with flowmeter 5 with metering clear waterThe clear water total amount in slurry mixing tank 6 is measured, slurry device is used for the slurry of slurry mixing tank 6, and densitometer 8 is located at 6 circulation line of slurry mixing tankOn, for monitoring the grey pulp density in slurry mixing tank 6, control unit controls 3 aperture of water valve by the data of flowmeter 5, liquid level gaugeRealize it is automatic supply water on demand, control unit is realized automatically by controlling 4 aperture of grey valve for ash, control unit by pre-set density,The unlatching and densitometer 8 for controlling slurry device realize that automatic premixing, control unit pass through control to the monitoring passback of real time dataThe revolution of plunger pump 9 processed and default discharge capacity realize automatic displacement on demand.

Control unit includes remote control unit, and remote control unit is by far controlling 10 groups of PLC processor 1 and remote-control operation screenAt by realizing remote control to the operation of remote-control operation screen 10.

Control unit further includes equipment end control unit, and equipment end control unit is located at well cementing operation scene, equipment end controlUnit processed is made of equipment end PLC processor 2 and equipment end operator control panel 11, solid by being realized to the operation of equipment end operator control panel 11The field control of well equipment.

1 one end of remote control PLC processor is connect with remote-control operation screen 10, remote to control 1 other end of PLC processor and equipment end PLCProcessor 2 connects, and remote-control operation screen 10 is communicated by Ethernet and equipment end control unit.

When automatic premixing, water and ash in the slurry mixing tank 6 pass sequentially through slurry device and densitometer 8 again returns toIn slurry mixing tank 6.

Density value is first set, when the density that the densitometer 8 monitors is identical as setting density value, and is maintained 10 seconds or moreWhen, control unit judgement automatic premixing terminates and closes slurry device.

Slurry device is circulating pump 7.

It is additionally provided with monopod video camera at cementing equipment scene, for being monitored to cementing equipment scene, and passes through hard diskVideo recorder is recorded, video export, for checking field operation situation and slurry mixing effect in the future.

Remote-control operation screen 10 is mounted on remote control PLC processor 1 in remote control case, is connected between the two by cable.Remote control PLC processor 1 in remote control case and communication connection is carried out by cable between equipment end PLC processor 2, to makeRemote control case can be operated and controlled to equipment end PLC processors 2 by remote-control operation screen 10.Equipment end PLC processingDevice 2 is connect with equipment end operator control panel 11 by cable.Equipment end PLC processor 2 passes through the liquid level gauge and water pipe in slurry mixing tank 6Flowmeter 5 in remittance acquires clear water amount, and by the Real-time Feedback of flowmeter 5 and liquid level gauge, automatic remote controls 3 aperture of water valve,When reaching the clear water amount of predetermined computation, automatic closing water valve 3.It opens grey valve 4 at this time to start for ash, the automatic circulating pump 7 that starts is openedBeginning carries out automatic slurry, and when 8 detection density of densitometer, which reaches, to be set density and maintain 10 seconds or more, control unit judgement is certainlyDynamic premix terminates, and according to the discharge capacity preset, control plunger pump 9 enters automatic displacement control.

Remote control case top panel configures a ultra-thin notebook, real by the network monopod video camera assembled in equipmentNow the video datas such as equipment slurry mixing tank 6, wellsite operating environment are monitored, and are recorded by hard disk video recorder,On-site supervision video and construction data can be real-time transmitted to information centre by 3G/4G or satellite communication.For remote monitoringCenter personnel carries out the data analysis and data sharing at scene.

Claims (8)

1. a kind of premixing system of remote control, including control unit, water valve, flowmeter, grey valve, slurry mixing tank, liquid level gauge, slurryDevice, densitometer and plunger pump, water supply passes sequentially through the flowmeter and water valve enters in slurry mixing tank, is entered by grey valve for ashIn slurry mixing tank, liquid level gauge is located in slurry mixing tank, and the clear water total amount in slurry mixing tank, slurry are measured with flowmeter jointly with metering clear waterDevice is used for the slurry of slurry mixing tank, and densitometer is located on slurry mixing tank circulation line, for monitoring the grey pulp density in slurry mixing tank, controlsUnit processed controls water valve aperture by the data of flowmeter, liquid level gauge and realizes automatic water supply on demand, and control unit is by controlling ashValve opening realizes that control unit is by pre-set density, the unlatching of control slurry device and densitometer to counting in real time automatically for ashAccording to monitoring passback realize automatic premixing, control unit passes through the revolution for controlling plunger pump and default discharge capacity realizes automatic row on demandAmount.

2. the premixing system of remote control according to claim 1, it is characterised in that：Described control unit includes long-range controlUnit processed, remote control unit are formed by far controlling PLC processor and remote-control operation screen, pass through the operation realization to remote-control operation screenRemote control.

3. the premixing system of remote control according to claim 2, it is characterised in that：Described control unit further includes equipmentControl unit, equipment end control unit is held to be located at well cementing operation scene, equipment end control unit is by equipment end PLC processor and setsStandby end operator control panel composition, by the field control for realizing cementing equipment to the operation of equipment end operator control panel.

4. the premixing system of remote control according to claim 3, it is characterised in that：Described remote control PLC processor one endIt is connect with remote-control operation screen, the remote PLC processor other end of controlling is connect with equipment end PLC processor, and remote-control operation screen passes through etherNet is communicated with equipment end control unit.

5. the premixing system of remote control according to claim 1, it is characterised in that：When automatic premixing, the slurryWater and ash in tank pass sequentially through slurry device and densitometer again returns in slurry mixing tank.

6. the premixing system of remote control according to claim 1, it is characterised in that：Density value is first set, when described closeThe degree density that monitors of meter is identical as setting density value, and when maintaining 10 seconds or more, and control unit judges that automatic premixing terminates simultaneouslyClose slurry device.

7. the premixing system of remote control according to claim 1, it is characterised in that：The slurry device is circulating pump.

8. the premixing system of remote control according to claim 1, it is characterised in that：It is additionally provided with cloud at cementing equipment scenePlatform video camera for being monitored to cementing equipment scene, and is recorded by hard disk video recorder, and video can export, for dayAfter check field operation situation and slurry mixing effect.