CN104635809A - Equipment for remotely controlling frequency modulation cyclic heating of heating sucker rods of cluster wells - Google Patents
Equipment for remotely controlling frequency modulation cyclic heating of heating sucker rods of cluster wells Download PDFInfo
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- CN104635809A CN104635809A CN201310571864.4A CN201310571864A CN104635809A CN 104635809 A CN104635809 A CN 104635809A CN 201310571864 A CN201310571864 A CN 201310571864A CN 104635809 A CN104635809 A CN 104635809A
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Abstract
Equipment for remotely controlling frequency modulation cyclic heating of heating sucker rods of cluster wells is suitable for recovery of cluster well heavy oil and comprises a main set and a backup set; the main set comprises a variable frequency control unit, a boost control unit and a well action response contactor unit; the variable frequency control unit performs variable frequency control on an external power supply and sets heating time T1 and heating interval T2; boost control unit boosts current which is subjected to frequency variation and selects a voltage output position; a well action response contactor unit selects one heating sucker rod to be heated. The internal parts of the backup set and the internal parts of the main set are completely equal and symmetrically distributed. The equipment is reasonable, simple and reliable in structure, one set of medium-frequency power supplies, one for use and the other for backup, is provided, multiple wellheads are automatically and cyclically heated, fault diagnosis and alarming functions are provided, cost is lowered, field labor intensity is reduced, and crude oil production is increased.
Description
Art
The present invention relates to the remote control field in oil field, especially many mouthfuls of oil wells are driven to carry out automatic/hand circulation electric-heating to sucker rod with an intermediate frequency power supply, and possess the cluster wells heating sucker rod frequency modulation circulating-heating remote control of remote monitoring function, be applicable to cluster wells thickened oil recovery.
Background technology
For the many difficult problems in " three is high " oil extraction process, as: crude oil lifting difficulty; Sucker rod load is overweight, descending difficulty; Oil pumper load strengthens, crude oil enters pump difficulty etc., usually individual well electric heating apparatus of hollow sucker rod is adopted at present, utilize the heat energy that electrical heating produces, whole process heating is carried out to the crude oil in oil pipe, reduces viscosity of crude, prevent wax deposition in oil pipe, improve crude oil fluidity, reach the object of recover the oil volume increase, synergy.
The existing electrical heating sucker rod technology adopted for a heavy oil wells exploitation difficult problem, heated by the heating sucker rod of an electric heater unit to a bite well, but for cluster wells, on each platform, integrated distribution has some mouthfuls of rod-pumped wells, and during the electrical heating sucker rod heat penetration of every mouthful of well difference, required heating voltage and heating current difference, adopt heating one to one certainly will cause the increase of cost for oil production.
Summary of the invention
In order to meet cluster wells thickened oil recovery, reducing production cost, improving the needs of the automatization level of equipment, the invention provides a kind of cluster wells heating sucker rod frequency modulation circulating-heating remote control.
The technical solution adopted in the present invention is: cluster wells heating sucker rod frequency modulation circulating-heating remote control, at least comprises a set of main device, and main device comprises the frequency conversion control unit, boosting rectifier control unit and the oil well action response contact unit that connect successively; Wherein frequency conversion control unit carries out variable frequency control to external power supply, and this unit is also responsible for the setting of heat time T1, heat-up periods time T2 simultaneously.Boosting rectifier control unit boosts to the electric current after frequency conversion and the gear selecting voltage to export; Then oil well action response contact unit is selected to connect the oil well heating sucker rod needing heating, so carries out circulating-heating according to the setting value of heat time T1, heat-up periods time T2 to N mouth oil well.
Wherein frequency conversion control unit comprises the air-break, the first electric parameters transducer and the frequency-variable controller that connect successively.Air-break is main power switch; First electric parameters transducer gathers three-phase voltage, the electric current of power input; The frequency of frequency-variable controller adjustment power supply.
Wherein boosting rectifier control unit comprises a transformer and second electric parameters transducer be connected with transformer output terminal.Second electric parameters transducer gathers voltage, electric current after frequency conversion, boosting, and by signal feedback to frequency-variable controller.
Wherein oil well action response contact unit comprises N number of action response contactor, and wherein N is the quantity of oil well heating sucker rod, the corresponding oil well heating sucker rod of each action response contactor.
Remote control of the present invention also comprises one and is enclosed within the backup device of starting working when main device breaks down.
In preferred version one, boosting rectifier control unit also comprises be connected with transformer secondary lateral coil more than 2 for selecting the voltage gear contactor of output voltage, and the corresponding voltage of each voltage gear contactor selects gear; Backup device and symmetrically layout identical with main device internal part.
In preferred version two, backup device only comprises frequency conversion control unit that is identical with main device internal part and symmetrically layout and boosting rectifier control unit, and backup device and main device share an oil well action response contact unit.The boosting rectifier control unit of backup device and main device is fixed one grade of voltage respectively and is exported, and voltage exports as 1000V.
In preferred version three, backup device only comprises frequency conversion control unit that is identical with main device internal part and symmetrically layout, and backup device and main device share a boosting rectifier control unit and an oil well action response contact unit.
The invention has the beneficial effects as follows: control device is rational in infrastructure, simple, reliable, a set of electrical heating sucker rod intermediate frequency power supply can heat many mouthfuls of wells by automatic cycle, intermediate frequency power supply the using and the reserved, possess on-site manual to control and remote auto controlling functions, and fault diagnosis and warning function, reduce oil well production cost, reduce work on the spot intensity, improve crude production rate.
Accompanying drawing explanation
Fig. 1 is the functional-block diagram of cluster wells heating sucker rod frequency modulation circulating-heating remote control of the present invention;
Fig. 2 is the frequency modulation circulating-heating remote control circuit theory diagrams of one embodiment of the invention.
Fig. 3 is the frequency modulation circulating-heating remote control operational flowchart of one embodiment of the invention.
Fig. 4 is the frequency modulation circulating-heating remote control of another embodiment of the present invention.
Fig. 5 is the frequency modulation circulating-heating remote control of another embodiment of the present invention.
In figure: 11. air-breaks, 12. electric parameters transducers, 13. frequency-variable controllers, 24. transformers, 25. electric parameters transducers, 28. contactors, 29. contactors, 36. contactors, 37. contactors, 39. contactors, 210. contactor, 211. contactor, 301. contactor, 302. contactor, 303. contactor, 304. contactor, 305. contactor, 312. contactor, 313. contactor, 314. contactor, B15. contactor, B16. contactor, B17. contactor, B18. contactor, B19. contactor, B20. contactor, B21. contactor, B22. contactor, B23. contactor, B24. air-break, B25. electric parameters transducer, B26. frequency-variable controller, B27. transformer, B28. electric parameters transducer, B29. contactor, B211. contactor.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described, but those skilled in the art should know, and the invention is not restricted to listed embodiment, as long as spirit according to the invention, all should be included in protection scope of the present invention.
Fig. 1 is the functional-block diagram of cluster wells heating sucker rod frequency modulation circulating-heating remote control of the present invention.Control device chief component of the present invention comprises: frequency conversion control unit 1, boosting rectifier control unit 2 and oil well action response contact unit 3.
First the electric current of external power supply input carries out variable frequency control by frequency conversion control unit 1, and this unit is also responsible for the setting of heat time T1, heat-up periods time T2 simultaneously.
Then electric current enters boosting rectifier control unit 2 and boosts, and this power supply is responsible for the gear selecting voltage to export simultaneously.
Then select by oil well action response contact unit 3 oil well needing heating, so according to the setting value of heat time T1, heat-up periods time T2, circulating-heating is carried out to N mouth oil well.
Be more than the basic functional principle of this device, describe in detail below in conjunction with specific embodiment.
Embodiment one
Cluster wells heating sucker rod frequency modulation circulating-heating remote control in the present embodiment is used for the heating of cycle control 1 ~ 6 mouthful of oil well, and certainly, controlled oil well quantity can also increase in other embodiments.As shown in Figure 2, be the frequency modulation circulating-heating remote control circuit theory diagrams of the present embodiment.
Frequency conversion control unit 1 comprises air-break 11, electric parameters transducer 12, frequency-variable controller 13, in frequency conversion control unit 1, air-break 11 is main power switch, and electric parameters transducer 12 is for gathering three-phase voltage, the electric current of power input, and frequency-variable controller 13 is for frequency modulation.
Three action response elements that boosting rectifier control unit 2 comprises transformer 24 and is connected with its second siding ring---voltage gear contactor 210, voltage gear contactor 211, voltage gear contactor 28; Boosting rectifier control unit 2 also comprises the electric parameters transducer 25 be connected with transformer 24 output terminal.Electric parameters transducer 25 has MODBUS communication function, for gathering voltage, the electric current after frequency conversion, boosting, and by signal feedback to frequency-variable controller 13.Wherein transformer 24 is for boosting, in the present embodiment, the sucker rod electrical heating voltage gear bit switch corresponding with each oil well is divided into 800V, 1000V, 1200V third gear, each gear voltage can change according to the winding number of turns of transformer secondary lateral coil, and corresponding action response element is contactor 210, contactor 211, contactor 28.
Oil well action response contact unit 3 comprises 6 action response contactors---i.e. contactor 37, contactor 36, contactor 39, contactor 312, contactor 314, contactor 313, be connected with the electrical heating start button of 1 ~ No. 6 oil well respectively, for heating each oil well heating sucker rod.
In addition, preferably the frequency modulation circulating-heating remote control of the present embodiment further provided with backup device, and the internal components of backup device is identical with the internal components of main device, and its 26S Proteasome Structure and Function is also identical, both internal parts symmetrically layout.As shown in Figure 2, backup device comprises air-break B24, electric parameters transducer B25, frequency-variable controller B26, transformer B27, electric parameters transducer B28, contactor B19, contactor B18, contactor B15, contactor B16, contactor B17, contactor B20, contactor B22, contactor B23, contactor B21, the function of spare controller part is identical with main control device, therefore repeats no more.When after main control device failure, system will automatically switch to spare controller part and carry out work.
Be described in further details the present invention below in conjunction with Fig. 3, Fig. 3 is the frequency modulation circulating-heating remote control operational flowchart of one embodiment of the invention.In use, first close air-break 11 and air-break B24, and set correlation parameter, mainly comprises: heat time T1, heating voltage, interval time T2, oil well quantity N, initial heating pound sign A etc.
During manual operation is:
First, close air-break 11 and air-break B24, and " automatic/to stop/manual " button in control operation panel is pushed " manually " position.
Then, heating voltage gear is selected.According to the corresponding hole condition needs of on-the-spot sucker rod electrical heating well, stir in control operation panel and select certain voltage gear bit switch, some in voltage gear contactor 210, voltage gear contactor 211 or voltage gear contactor 28 is just connected with the action response contactor adhesive of certain oil well (to be selected), and the action response contactor that other voltage gears are corresponding disconnects.
Secondly, certain mouthful of oil well is selected.Need to carry out the numbering corresponding to electrically heated oil well according to on-the-spot 1 ~ No. 6, press the start button that this oil well numbering is corresponding in control operation panel, action response contactor and the aforementioned selected voltage gear contactor adhesive of this number oil well are connected; Transformer 24 exports this gear voltage, PLC frequency-variable controller 13 is started working, and the electric quantity signal that electric parameters transducer 12, electric parameters transducer 25 send is analyzed, control the output current size of frequency-variable controller, now the sucker rod of this number oil well establishes heating of beginning by cable.When needs stop heating, press the stop button that this number well is corresponding, frequency-variable controller 13 quits work, and the voltage gear contactor corresponding with this number oil well and action response contactor disconnect, and namely this number oil well stop carrying out sucker rod electrical heating.
When needing to select lower a bite well to carry out sucker rod electrical heating, then in control operation panel, press start button corresponding to this number well.In whole operating process, state-detection control and fault diagnosis, warning is carried out by PLC frequency-variable controller 13, if the PLC frequency-variable controller 13 in main control device breaks down, system automatically switches to spare controller part PLC frequency-variable controller B26 and carries out work, switch board and host computer all can show fault cues simultaneously, inform that maintainer overhauls equipment.
Automatic operation process is:
First, close air-break 11 and air-break B24, according to the corresponding hole condition needs of on-the-spot sucker rod electrical heating well, in control operation panel, stir the voltage gear switch that selection 1 ~ No. 6 each oil well is corresponding, " automatic/to stop/manual " button in control operation panel is pushed " automatically " position.
Then, by initial setting pound sign assignment A, such as A=1, namely heat from No. 1 oil well, now, the action response contactor 37 that PLC frequency-variable controller 13 controls corresponding to No. 1 well is connected with the voltage gear contactor adhesive of certain selected gear aforementioned, PLC frequency-variable controller 13 is started working afterwards, and to electric parameters transducer 12, the electric quantity signal that electric parameters transducer 25 sends is analyzed, the size of variable frequency control output current, No. 1 oil well starts to carry out sucker rod electrical heating, after heat time T1 set in the program being heated to PLC, frequency-variable controller 13 quits work, disconnect the connection of voltage gear contactor corresponding to No. 1 well and action response contactor 37, No. 1 well sucker rod stops electrical heating.Postpone certain hour until, after interval time, T2 arrived; action response contactor 36 corresponding to No. 2 wells is connected with the voltage gear contactor adhesive of certain gear; PLC frequency-variable controller 13 is started working afterwards; No. 2 oil wells start to carry out sucker rod electrical heating; the like the electrical heating of sequential loop sucker rod is carried out to 1 ~ 6 mouthful of well; when wherein certain number oil well is shut down; PLC frequency-variable controller 13 is shut down or fault-signal by this oil well detected; PLC frequency-variable controller 13 will skip this mouthful of oil well automatically, performs the sucker rod electrical heating of lower a bite oil well.If the frequency-variable controller 13 in main control device, transformer 24 or contactor break down, system automatically switches to spare controller part and carries out work, and switch board and host computer all can show fault cues simultaneously, inform that maintainer overhauls equipment.
Embodiment two---without the need to changing voltage
As shown in Figure 4, present invention also offers the frequency modulation circulating-heating remote control of another embodiment, when the oil well on oil producing operation platform mostly is 5 mouthfuls most, and well depth gap little time, without the need to switching heating voltage, only use wherein any one gear time, the A1 of transformer 24 is held and is connected with X1 end, or A2 end is connected with X2 end, or A3 end is connected with X3 end, the then A of transformer 24, the output voltage of X end is a fixed value, remove the contactor that two other voltage gear in embodiment one is corresponding, only retain 1 contactor 211, be the A2 of transformer 24 is held be connected with X2 end in Fig. 4, A, the output voltage of X end is 1000V, system selects access main control intermediate frequency power supply or intermediate frequency power supply for subsequent use by the duty of PLC frequency-variable controller 13 and standby variable frequency device and control contactor 211 and being switched on or switched off of contactor B211.
For further simplified apparatus, main device in the present embodiment device, backup device only retain same action response contact unit, remove the action response contact unit in the spare controller part in embodiment one, both frequency conversion control unit 1, boosting rectifier control unit 2 26S Proteasome Structure and Function are also identical, both internal parts also symmetrically layout, as shown in Figure 4.
In practical operation, the action response device corresponding to electrical heating start button of 1 ~ No. 5 oil well is contactor 301, contactor 302, contactor 303, contactor 304, contactor 305, and this device carries out manual/auto heating by the break-make of these 5 response contactors to each oil well electrical heating sucker rod; The function of miscellaneous part and identical in embodiment one, when main device breaks down, system automatically switches to backup device work.
Embodiment three---without the need to changing voltage, and share a transformer
Fig. 5 is the frequency modulation circulating-heating remote control of another embodiment of the present invention.This embodiment without the need to changing voltage, and shares a transformer.
As shown in Figure 5, on the basis of embodiment two, remove one group of transformer and electric parameters transducer again, system is selected to access main frequency-variable controller 13 or standby variable frequency controller B26 by the duty of PLC frequency-variable controller 13 and frequency-variable controller B26 and control contactor 29 and being switched on or switched off of contactor B29, boost through transformer 24 again, then by the action response device corresponding to electrical heating start button---the contactor 301 of control 1 ~ No. 5 oil well, contactor 302, contactor 303, contactor 304, the break-make of contactor 305 carries out manual/auto heating to each oil well electrical heating sucker rod.
The present embodiment still arranges frequency-variable controller B26 for subsequent use and control contactor B29, and when electric parameters transducer 29, frequency-variable controller 13 break down, system automatically switches to standby device work.
The device of this embodiment uses relatively simple: please also refer to shown in Fig. 3, first close air-break 11 and air-break B24, and set correlation parameter, mainly comprise: heat time T1, heating voltage, interval time T2, oil well quantity N, initial heating pound sign A etc.
Because of without the need to switching heating voltage, so do not need to select heating voltage gear, directly select certain mouthful of oil well needing heating.Suppose that the transformer 24 in the present embodiment exports as 800V shelves.
In control operation panel, " automatic/to stop/manual " button is pushed " automatically " position, suppose that heating is from No. 1 well.Control system is not detecting under failure message, contactor 29, contactor 301 adhesive is connected, PLC frequency-variable controller 13 frequency conversion exports, export through transformer 24 again, start to carry out sucker rod electrical heating to No. 1 oil well, PLC is according to the analysis of the electric parameter gathered electric parameters transducer 12 and electric parameters transducer 25, close-loop feedback control is carried out to the output current size of frequency-variable controller 13, when after the heat time T1 arriving setting, PLC frequency-variable controller 13 disconnects and exporting, disconnect contactor 29 afterwards, contactor 301, after time delay certain time interval T 2, PLC frequency-variable controller 13 control contactor 29 and contactor 302 adhesive are connected, transformer 24 exports as 800V shelves, PLC frequency-variable controller 13 frequency conversion exports, start to carry out sucker rod electrical heating to No. 2 oil wells, when after the heat time T1 arriving setting, PLC frequency-variable controller 13 disconnects and exporting, disconnect contactor 29 afterwards, contactor 302, after time delay certain time interval T 2, now PLC frequency-variable controller 13 detects that No. 3 oil wells are shut down, by that analogy, move in circles, be 5 mouthfuls of heating oil wells.
Above-mentioned three embodiments only illustrate; can operate as long as this device comprises a frequency conversion control unit 1, boosting rectifier control unit 2 and oil well action response contact unit 3; that is; even no matter how backup device is arranged is do not have the technical scheme of backup device still to belong to scope to it should be noted that above-described embodiment is example and unrestricted the present invention, those skilled in the art can design a lot of alternate embodiment and not depart from the scope of claims.
Claims (9)
1. a cluster wells heating sucker rod frequency modulation circulating-heating remote control, at least comprises a set of main device, it is characterized by:
Described main device comprises the frequency conversion control unit, boosting rectifier control unit and the oil well action response contact unit that connect successively;
Wherein said frequency conversion control unit carries out variable frequency control to external power supply, and this unit is also responsible for the setting of heat time T1, heat-up periods time T2 simultaneously; Described boosting rectifier control unit boosts to the electric current after frequency conversion and the gear selecting voltage to export; Then described oil well action response contact unit is selected to connect the oil well heating sucker rod needing heating, so carries out circulating-heating according to the setting value of heat time T1, heat-up periods time T2 to N mouth oil well.
2. cluster wells heating sucker rod frequency modulation circulating-heating remote control as claimed in claim 1, it is characterized by: described frequency conversion control unit comprises the air-break, the first electric parameters transducer and the frequency-variable controller that connect successively, described air-break is main power switch, described first electric parameters transducer gathers three-phase voltage, the electric current of power input, and described frequency-variable controller adjusts the frequency of described power supply.
3. cluster wells heating sucker rod frequency modulation circulating-heating remote control as claimed in claim 1, it is characterized by: described boosting rectifier control unit comprises a transformer and second electric parameters transducer be connected with described transformer output terminal, described second electric parameters transducer gathers voltage, electric current after frequency conversion, boosting, and gives described frequency-variable controller by signal feedback.
4. cluster wells heating sucker rod frequency modulation circulating-heating remote control according to claim 1, it is characterized by: described oil well action response contact unit comprises N number of action response contactor, wherein N is the quantity of described oil well heating sucker rod, the corresponding described oil well heating sucker rod of each described action response contactor.
5. the cluster wells heating sucker rod frequency modulation circulating-heating remote control as described in claim 2,3 or 4, is characterized by: described remote control also comprises one and is enclosed within the backup device of starting working when described main device breaks down.
6. cluster wells heating sucker rod frequency modulation circulating-heating remote control as claimed in claim 5, it is characterized by: described boosting rectifier control unit also comprises be connected with described transformer secondary lateral coil more than 2 for selecting the voltage gear contactor of output voltage, the corresponding voltage of each described voltage gear contactor selects gear; Described backup device and symmetrically layout identical with described main device internal part.
7. cluster wells heating sucker rod frequency modulation circulating-heating remote control as claimed in claim 5, it is characterized by: described backup device only comprises and frequency conversion control unit of symmetrically layout and boosting rectifier control unit identical with described main device internal part, described backup device and described main device share an oil well action response contact unit.
8. cluster wells heating sucker rod frequency modulation circulating-heating remote control as claimed in claim 7, is characterized by: the boosting rectifier control unit of described backup device and described main device is fixed one grade of voltage respectively and exported, and described voltage exports as 1000V.
9. cluster wells heating sucker rod frequency modulation circulating-heating remote control as claimed in claim 5, it is characterized by: described backup device only comprises and frequency conversion control unit of symmetrically layout identical with described main device internal part, described backup device and described main device share a boosting rectifier control unit and an oil well action response contact unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310571864.4A CN104635809B (en) | 2013-11-13 | 2013-11-13 | Cluster well heating sucker rod frequency modulation circulating-heating remote control |
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| CN201310571864.4A CN104635809B (en) | 2013-11-13 | 2013-11-13 | Cluster well heating sucker rod frequency modulation circulating-heating remote control |
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| CN104635809A true CN104635809A (en) | 2015-05-20 |
| CN104635809B CN104635809B (en) | 2017-03-15 |
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