CN1060845C - Apparatus for automatic controlling load of oil pumping unit and balance of oil well liquid supply rate - Google Patents
Apparatus for automatic controlling load of oil pumping unit and balance of oil well liquid supply rate Download PDFInfo
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- CN1060845C CN1060845C CN96106376A CN96106376A CN1060845C CN 1060845 C CN1060845 C CN 1060845C CN 96106376 A CN96106376 A CN 96106376A CN 96106376 A CN96106376 A CN 96106376A CN 1060845 C CN1060845 C CN 1060845C
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Abstract
The present invention relates to a device for automatically controlling the balance of load of an oil pumping machine and the liquid supply quantity of an oil well, which is composed of a load sensor (1), a displacement sensor (2), an amplifying circuit (3), a plurality of switches (4), an A/D conversion circuit (5), an SCM judging and processing circuit (6), an D/A conversion circuit (7), a control signal amplifying circuit (8), a speed regulating motor (9), a display and communication circuit (10), a power circuit (11), etc., wherein the load sensor and the displacement sensor measure corresponding load signals and displacement signals; through the A/D conversion of the load signals and the displacement signals, the load signals and the displacement signals are input to a CPU and a peripheral circuit thereof, and is converted into a power diagram of the oil pumping machine well; then, the power diagram is analyzed and processed, the working condition of the well is judged, and the balance of the load of the oil pumping machine and the liquid supply quantity of the oil well is automatically controlled.
Description
This device belongs to the oil production equipment automated control technology, is a kind of automatic control device that is exclusively used in automatic adjusting pumping well jig frequency.Specifically, be the working state of the oil well pump that reflected according to pumping unit well pump merit figure, regulate motor speed automatically, realize the purpose of control pumping well jig frequency automatically.That is to say, stronger at the oil reservoir fluid supply capacity, when the full level of pump is better, accelerate motor speed automatically, increase the jig frequency (increasing the production fluid amount) of pumping well; When oil well liquid-supplying is not enough, during pump full level difference, reduce motor speed automatically, reduce the jig frequency of pumping well, make stratum fluid supply capacity and pumping unit capacity of well form a kind of transient equiliblium.
In the oil field development production process, especially enter the development late stage of ultra-high water-containing in the oil field, the oil reservoir fluid supply capacity changes greatly, and the throughput of pumping unit and oil reservoir fluid supply capacity incompatibility, unbalanced contradiction are general and long-standing.How solving the way that this contradiction taked in the past is manual tune pumping well parameter, is complementary with the stratum fluid supply capacity.This way wastes time and energy, and is difficult to guarantee pumping well is effectively controlled, even the manual tune parameter reaches balance for the moment, also is difficult to maintain state of equilibrium, thereby often makes pumping well be in irrational working state.By retrieval, do not find close therewith technology so far.In sum, in order to adapt to the needs of pumping well modern production management, be badly in need of a kind of automatic control set for adjusting of pumping well parameter that is exclusively used in.
The purpose of this device is to provide a kind of automatic control pumping unit load and oil well liquid-supplying amount Equilibrator at the problems referred to above, finally realizes the automatic control of Process of Oil Pumping Unit Well.
This device is realized by following technological scheme:
Partly form by load transducer 1, displacement transducer 2, amplification circuit 3, variable connector 4, mould/number conversion circuit 5, single-chip microcomputer judgment processing circuit 6, D/A switch circuit 7, control signal amplification circuit 8, speed-adjustable motor 9, demonstration communicating circuit 10, power circuit 11 and other auxiliary cicuit etc.It is characterized in that: load transducer 1 and displacement transducer 2 outputs analog electric signal corresponding with it, input to amplification circuit 3 respectively, after amplifying, export the input end of variable connector 4 to, the input end of mould/number conversion circuit 5 links to each other with variable connector 4 output terminals, the load that it obtains timesharing, displacement signal is sent to single chip circuit 6 after converting digital signal to, signal after single chip circuit 6 is handled inputs to D/A switch circuit 7, convert the input end that analogue signal is delivered to control signal amplification circuit 8 to through D/A switch circuit 7, the output terminal of control signal amplification circuit 8 links to each other with speed-adjustable motor 9, is used to control the variation of motor speed.In addition, single chip circuit also links to each other with demonstration, communicating circuit 10, and some miscellaneous functions are provided, and power circuit 11 is the foregoing circuit power supply.It is characterized in that adopting angular displacement sensor; It is characterized in that adopting electromagnetic adjustable speed motor; It is characterized in that adopting frequency control motor.
The load transducer 1 of this device is a kind of resistance strain type sensor, is made up of elastic element, resistance-strain bridge circuit, stressed fulcrum and protecting sheathing.Its effect is to convert load signal to corresponding analog electric signal.
The displacement transducer 2 of this device partly is made up of highi degree of accuracy single-turn potentiometer, transmission arm and shell etc.Its purposes is angle to be changed be converted to corresponding analogue signal.
The amplification circuit 3 of this device, variable connector 4 and mould/number conversion circuit 5 mainly selects beginning of 1 electronic simulation and A/D converter to form by signal amplification circuit, 8, after wherein amplification circuit 3 will amplify from the signal of load sensor 1, displacement transducer 2, be connected to the input end of variable connector 4, the output terminal of variable connector 4 links to each other with the input end of A/D converter 5, and the output terminal of A/D converter 5 links to each other with the input end of single chip circuit 6.
Single-chip microcomputer judgment processing circuit 6 in this device is one of its important component parts, finishes analysis, processing and judgement to load, displacement signal by it, and finishes various control functions.Single chip circuit is mainly by 8 single-chip microcomputers, EPROM (ultraviolet Erasable Programmable Read Only Memory EPROM), E
2Compositions such as PROM (Electrically Erasable Read Only Memory), address latch and clock circuit.EPROM is used for depositing and has debugged monitoring facilities and the application program that finishes.E
2PROM is used for depositing Monitoring Data, intermediate object program and user program, and its memory contents is not influenced by outage.The input end of address latch links to each other with single-chip microcomputer, its output respectively with EPROM, E
2The input end of PROM links to each other.Clock circuit is made up of clock generator, oscillating crystal and peripheral circuit, and its role is to provides CLK clock for above each several part circuit and A/D change-over circuit, D/A change-over circuit.Wherein from the signal of mould/analog conversion circuit 5, output terminal links to each other with single chip circuit 6 input ends, and the output terminal of single chip circuit 6 links to each other with the input end of D/A change-over circuit 7 and communication, display circuit 10 respectively.
D/A switch circuit 7, control signal amplification circuit 8 and speed-adjustable motor 9 in this device mainly are made up of latch, D/A converter, amplification circuit and speed-adjustable motor.Signal from single-chip microcomputer links to each other with the input end of D/A converter behind latch, and the analogue signal of its output inputs to speed-adjustable motor 9 after amplification circuit 8 amplifies, be used for controlling the rotating speed of electromagnetic adjustable speed motor.Demonstration, communicating circuit 10 in this device link to each other with single chip circuit, its role is to provide some miscellaneous functions.
The automatic control pumping unit load of being made up of the each part mentioned above circuit and the working principle of oil well liquid-supplying amount Equilibrator are: at first convert electrical signal to by load transducer 1 and displacement transducer 2 load and the displacement signal that the pumping well polished rod is suffered, after amplifying by signal amplification circuit 3 again, send into mould/number conversion circuit 5 through variable connector 4, after converting periodically variable digital signal to the linear analog electric signal of load signal, being sent to single-chip microcomputer judgment processing circuit 6 analyzes and handles, compare with normal load signal or the figure stored then, judge the pump power condition of pumping well.This judges signal after 7 conversions of D/A change-over circuit and amplifying, and the control speed-adjustable motor correspondingly quickens, deceleration, constant or shut down, and the final jig frequency that realizes regulating automatically pumping well makes it corresponding quickening, slows down or the purpose of stop pumping.
The major advantage of this device circuit is: circuit design is new reasonable, digitizing and new and high technology such as programme-controlled have been adopted, integrated degree height, Perfect in shape and function, accurately sensitivity, reliable performance, antijamming capability are strong, can adapt to various abominable well site environment, be fit to all kinds of pumping units and use, be particularly useful for feed flow deficiency, well that production capacity is lower.
The major advantage of this device is: 1, " tap the latent power and increase oil ", promptly excavate the stratum potentiality, make the pumping unit capacity of well reach maximum, thereby play the purpose that increases crude output.Specifically, in the production process of pumping well, pumping well generally with fixing jig frequency work (as 3,6,9,12 times/minute etc.), not very sufficient pumping well for a bite fluid supply capacity so, if being 8 times/timesharing and stratum fluid supply capacity, its jig frequency constitutes balance, the adverse consequencess such as damage pump that produce for fear of the back of finding time, the conventional pumping unit well can only work in 6 times/minute, and utilize native system, pumping well is worked in 8 times/minute, be that the per minute kind increases by 2 times production fluid amount, excavate the stratum potentiality, increase the purpose of pumping well output thereby play.2, improve the pump efficiency and the system effectiveness of pumping well, reach purpose of energy saving.Because present technique can make the throughput of pump and stratum fluid supply capacity keep balance, it can make oil well pump be in working state preferably always, keeps higher system efficient; Present technique has been used electromagnetic adjustable speed motor simultaneously, avoided the problem of ubiquitous in the present field produces " low load with strong power " (to change apart from bigger because pumping well starts, the motor of pumping well is generally than the big 10～20KW of desired volume, need use the 35KW motor as certain mouthful of well, the 55KW motor then is installed in actual production).Therefore, its energy-saving effect is very considerable.3, reduce the equipment loss rate.The use of present technique can make pumping well be in rational working state, simultaneously because the use of speed-adjustable motor, reduce common electric machine frequent starting, overburdening and underrun and advanced adverse effect to equipment such as electrical network, pumping well motor, oil well pumps, thereby can reduce equipment failure rate, increase pumping unit and electrical machinery life, prolong pump detection period.4, the automatic unusual situation of judgment processing.Sand card, polished rod are disconnected to be taken off and during unusual situation such as severe leakage, carries out automatic judgment processing (as shutdowns, warning etc.), the minimizing unnecessary loss as running at pumping well.
Accompanying drawing 1 is that the circuit of this device constitutes skeleton diagram.
Accompanying drawing 2 is signal amplification circuit and mould/number conversion circuit of this device.
Accompanying drawing 3 is single chip circuits of this device.
Accompanying drawing 4 is controlling output circuit of this device.
Accompanying drawing 5 is RS232 interface circuits of this device.
Details are as follows to the embodiment of this device in conjunction with the accompanying drawings:
In the accompanying drawing 1,1 is load transducer, and 2 is displacement transducer, and 3 is amplification circuit, 4 is variable connector, 5 is mould/number conversion circuit, and 6 is single-chip microcomputer judgment processing circuit, and 7 is the D/A switch circuit, 8 is the control signal amplification circuit, 9 is speed-adjustable motor, and 10 are demonstration, communicating circuit, and 11 is power circuit.
In the accompanying drawing 2, R3, R4, R5, R6, R7, R8 and U12A (LM358) form load signal amplification circuit, wherein J5-3, J5-4 is the power input of load transducer bridge circuit, and the load signal of variation after the J5-2 output, is amplified into the variable connector input end through U12A (LM358) through J5-1 again.J7-1, J7-2 are the ac power input end of displacement signal, and J6-1, J6-2 and J6-3, J6-4 are respectively displacement signal input and excitation end.Displacement signal is delivered to variable connector U10 (AD7501) input end after U11A (LM358), U12B (LM358) amplify.Most switches are 8 to select 1 electronic analog swtich, and the input end of A/D converter U9 (AD754) is delivered in the load of being imported, displacement signal timesharing respectively, and A/D converter is to deliver to CPU after the digital signal with this signal conversion.
In the accompanying drawing 3, C1, C2, X1 form clock oscillation circuit.U8 (MAX705) is WATCHDOG (house dog), is used for resetting of program.U2 (80C31BH) is CPU; U4 (27C020) is a program storage, is used for stores processor, judges required monitoring and application program; U5 is a data storage, is used for store data and intermediate object program; U3 (74HC373) is an address latch; By the test data of A/D converter input judgment processing, control signal is delivered to D/A converter through storage and CPU, application program.U6 is 3-8 decoder 74HC138, and being mainly used in the control peripheral circuit is gating A/D converter or D/A converter.It is set that all interfaces of J2～J4 are the debugging convenience among the figure.
Accompanying drawing 4 is a controlling output circuit.From the control signal of CPU, after U14 (74HC273) latchs, input to D/A converter U13 (DAC102D) earlier.J8-1, J8-2 are the voltage signal that electromagnetic adjustable speed motor is used to control rotating speed, after amplifying, U15C (LM358), U16C (LM358) input to D/A converter U13, D/A converter with this signal halves after, press the desired component output of U14, output component is behind U16A (LM358), amplify through U15A (LM358) again, be used to control the rotating speed of electromagnetic adjustable speed motor.
Accompanying drawing 5 is the RS232 interface circuit, is used for purposes such as external display device, keyboard or external control.
The working procedure of this device is: load transducer, displacement transducer records corresponding load, displacement signal, after the A/D conversion, input to CPU and peripheral circuit (program storage thereof, data storage etc.), change the merit figure of pumping well for this reason, again this merit figure or pump merit figure (can be imported the parameters of this well by keyboard) are analyzed, handle, judge the working state of this well, promptly increase the pumping well jig frequency if normally then accelerate motor speed automatically, finally make pumping unit well capacity and stratum fluid supply capacity reach state of equilibrium if find time then according to the corresponding reduction jig frequency of the full level of pump.If run into sand card, severe leakage, disconnected when unusual situation such as taking off, then shut down, report to the police or processing such as the rotating speed that slows down, to reduce the loss that is caused thus.
The maximum voltage that speed-adjustable motor is used to regulate rotating speed enters D/A converter U13 by J8-1, J8-2 by U15C and U15B, U13 is divided into 256 parts with this voltage, again according to the control signal of CPU, the output correspondent voltage, after U16A, U15A amplify, control the rotating speed of speed-adjustable motor, reach the purpose of automatic control pumping unit load and oil well liquid-supplying amount balance.
Claims (1)
1. control pumping unit load and oil well liquid-supplying amount Equilibrator automatically, by load transducer (1), displacement transducer (2), amplification circuit (3), variable connector (4), mould/number conversion circuit (5), single-chip microcomputer judgment processing circuit (6), D/A switch circuit (7), control signal amplification circuit (8), speed-adjustable motor (9), show communicating circuit (10) and power circuit (11) composition, it is characterized in that: load transducer (1) and displacement transducer (2) are exported its corresponding analog electric signal, input to amplification circuit (3) respectively, after amplifying, export the input end of variable connector (4) to, the input end of mould/number conversion circuit (5) links to each other with variable connector (4) output terminal, the load that it obtains timesharing, displacement signal is sent to single chip circuit (6) after converting digital signal to, signal after single chip circuit (6) is handled inputs to D/A switch circuit (7), convert the input end that analogue signal is delivered to control signal amplification circuit (8) to through D/A switch circuit (7), the output terminal of control signal amplification circuit (8) links to each other with speed-adjustable motor (9), be used to control the variation of motor speed, single chip circuit also and show, communicating circuit (10) links to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96106376A CN1060845C (en) | 1996-06-10 | 1996-06-10 | Apparatus for automatic controlling load of oil pumping unit and balance of oil well liquid supply rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96106376A CN1060845C (en) | 1996-06-10 | 1996-06-10 | Apparatus for automatic controlling load of oil pumping unit and balance of oil well liquid supply rate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1167879A CN1167879A (en) | 1997-12-17 |
| CN1060845C true CN1060845C (en) | 2001-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96106376A Expired - Fee Related CN1060845C (en) | 1996-06-10 | 1996-06-10 | Apparatus for automatic controlling load of oil pumping unit and balance of oil well liquid supply rate |
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| Country | Link |
|---|---|
| CN (1) | CN1060845C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865053B (en) * | 2011-07-04 | 2015-06-03 | 中国石油天然气股份有限公司 | Method and device for judging optimal stroke frequency of oil pumping unit |
| CN102734145A (en) * | 2012-07-02 | 2012-10-17 | 于明 | Wireless remote speed regulation system for sewage lifting pump |
| CN103256024B (en) * | 2013-04-28 | 2016-01-13 | 哈尔滨索菲电气技术有限公司 | The engineering measuring method of beam pumping unit position factor and torque factor and device |
| CN105629169B (en) * | 2014-11-20 | 2018-08-24 | 中国石油化工股份有限公司 | Motor test pumping unit alternating load Loading Control device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1289988A1 (en) * | 1985-08-06 | 1987-02-15 | Всесоюзный Научно-Исследовательский Институт Методики И Техники Разведки Всесоюзного Производственного Объединения "Союзгеотехника" | Apparatus for determining jointing of rock |
| SU1361314A1 (en) * | 1986-01-06 | 1987-12-23 | Специальное Проектно-Конструкторское Бюро Автоматизации Глубокого Разведочного Бурения Всесоюзного Производственного Объединения "Союзгеотехника" | Method and apparatus for automatic maintaining of preselected bit loading |
| CN1050247A (en) * | 1989-09-14 | 1991-03-27 | 北京市西城新开通用试验厂 | Comprehensive sampling and recording device for mechanoelectric petroleum pro specting well drilling |
| CN2080557U (en) * | 1991-02-27 | 1991-07-10 | 中原石油勘探局钻井工艺研究院 | Rotary disc torque monitor |
| CN2122232U (en) * | 1992-06-06 | 1992-11-18 | 北京金时石油测试技术有限公司 | Intelligent test analyzer of multi-parameter beam-pumping unit |
-
1996
- 1996-06-10 CN CN96106376A patent/CN1060845C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1289988A1 (en) * | 1985-08-06 | 1987-02-15 | Всесоюзный Научно-Исследовательский Институт Методики И Техники Разведки Всесоюзного Производственного Объединения "Союзгеотехника" | Apparatus for determining jointing of rock |
| SU1361314A1 (en) * | 1986-01-06 | 1987-12-23 | Специальное Проектно-Конструкторское Бюро Автоматизации Глубокого Разведочного Бурения Всесоюзного Производственного Объединения "Союзгеотехника" | Method and apparatus for automatic maintaining of preselected bit loading |
| CN1050247A (en) * | 1989-09-14 | 1991-03-27 | 北京市西城新开通用试验厂 | Comprehensive sampling and recording device for mechanoelectric petroleum pro specting well drilling |
| CN2080557U (en) * | 1991-02-27 | 1991-07-10 | 中原石油勘探局钻井工艺研究院 | Rotary disc torque monitor |
| CN2122232U (en) * | 1992-06-06 | 1992-11-18 | 北京金时石油测试技术有限公司 | Intelligent test analyzer of multi-parameter beam-pumping unit |
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| Publication number | Publication date |
|---|---|
| CN1167879A (en) | 1997-12-17 |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |