CN111075396A - Real-time interlocking automatic control device and method for electric heating of ultra-heavy oil well shaft - Google Patents
Real-time interlocking automatic control device and method for electric heating of ultra-heavy oil well shaft Download PDFInfo
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- CN111075396A CN111075396A CN201811218323.2A CN201811218323A CN111075396A CN 111075396 A CN111075396 A CN 111075396A CN 201811218323 A CN201811218323 A CN 201811218323A CN 111075396 A CN111075396 A CN 111075396A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/04—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
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- Automation & Control Theory (AREA)
- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Induction Heating (AREA)
Abstract
The invention provides an electric heating real-time interlocking automatic control device and method for an extra-thick oil shaft, wherein the electric heating real-time interlocking automatic control device for the extra-thick oil shaft comprises a wireless load sensor and a controller, the wireless load sensor is connected with the controller, suspension point load data of an oil pumping unit in a reciprocating motion process are collected, the suspension point load data are transmitted to the controller, a PLC (programmable logic controller) control unit in the controller receives and judges the suspension point load data, maximum and minimum loads in a period of time are calculated, and the current of an electric heating medium-frequency power supply is automatically and continuously adjusted by comparing with maximum and minimum load thresholds. The real-time interlocking automatic control device and the method for the electric heating of the ultra-heavy oil well shaft realize the automatic adjusting function, avoid the error of manual adjustment and reduce the labor intensity, have fresh attempts in the field of electric heating of the well shaft at present, and can provide reference for lifting, viscosity reduction, energy saving and consumption reduction of similar well shafts.
Description
Technical Field
The invention relates to the technical field of electric heating of super heavy oil mineshafts, in particular to an electric heating real-time interlocking automatic control device and method for a super heavy oil mineshaft.
Background
The viscosity of the extra-heavy oil is higher than 50000mPa.s when the extra-heavy oil is stored in a stratum, and the extra-heavy oil needs to be developed in a steam huff and puff mode. In the development process, the difficulty of wellbore lifting is high under the influence of the viscosity of crude oil, wellbore viscosity reduction measures need to be adopted, and wellbore electric heating is one of the most common wellbore lifting and viscosity reduction measures. However, in a steam huff and puff period, the formation energy and the liquid production amount are gradually reduced, the friction resistance of the oil rod is gradually increased in the lifting process, and the electric heating intensity required by the shaft is gradually increased, so that the real-time automatic adjustment of shaft electric heating is realized according to the production condition, the purpose of saving energy and improving efficiency is achieved, and the steam huff and puff cycle has important significance. Therefore, a novel real-time interlocking automatic control device and method for electric heating of the ultra-heavy oil well shaft are invented, and the technical problems are solved.
Disclosure of Invention
The invention aims to provide a device and a method for automatically controlling the electric heating medium-frequency power supply current of an ultra-heavy oil well shaft in real time by using a suspension point load.
The object of the invention can be achieved by the following technical measures:
the super heavy oil well shaft electric heating real-time interlocking automatic control device comprises a wireless load sensor and a controller, wherein the wireless load sensor is connected to the controller, collects suspension point load data of an oil pumping unit in a reciprocating motion process and transmits the suspension point load data to the controller, a PLC control unit in the controller receives and judges the suspension point load data, calculates the maximum and minimum loads in a period of time, and automatically and continuously adjusts the electric heating medium-frequency power supply current by comparing with the maximum and minimum load thresholds.
The object of the invention can also be achieved by the following technical measures:
the wireless load sensor is arranged at the position of the rope suspension device to collect suspension point load data in real time.
The control unit further comprises a touch panel, and the touch panel is connected to the PLC and used for setting maximum and minimum load thresholds and displaying maximum and minimum load values and electric heating intermediate-frequency power supply current in real time.
The PLC control unit calculates a maximum load value and a minimum load value within the last 30 minutes according to the suspension point load data transmitted by the wireless load sensor, and when the maximum load value is smaller than a maximum load threshold value or the minimum load value is larger than a minimum load threshold value, the current of the electrical heating medium-frequency power supply is kept unchanged; otherwise, the PLC control unit automatically adjusts the current of the electric heating intermediate frequency power supply to be 0.5A and judges whether the current of the electric heating intermediate frequency power supply exceeds the maximum rated current or not, if so, the PLC control unit operates at the maximum rated current, otherwise, the PLC control unit operates at the current.
And after the PLC control unit operates for 1 hour, load calculation and adjustment of the electric heating medium-frequency power supply current are carried out again according to the suspension point load data transmitted by the wireless load sensor.
The object of the invention can also be achieved by the following technical measures:
the real-time interlocking automatic control method for the electric heating of the ultra-heavy oil well shaft comprises the following steps: step 1, setting a maximum load threshold value and a minimum load threshold value; and 2, calculating the maximum load and the minimum load within a period of time according to the suspension point load data, and regulating the current of the electrical heating medium-frequency power supply by comparing with the maximum load threshold and the minimum load threshold.
The object of the invention can also be achieved by the following technical measures:
in step 2, calculating a maximum load value and a minimum load value within the last 30 minutes according to the suspension point load data, and keeping the current of the electrical heating medium-frequency power supply unchanged when the maximum load value is smaller than a maximum load threshold value and the minimum load value is larger than a minimum load threshold value; otherwise, automatically adjusting the current of the electric heating intermediate frequency power supply to be 0.5A, judging whether the current of the electric heating intermediate frequency power supply exceeds the maximum rated current, if so, operating at the maximum rated current, otherwise, operating at the current.
The real-time linkage automatic control method for the electric heating of the ultra-thick oil well shaft further comprises the step 2, after the operation is carried out for 1 hour, the process returns to the step 2, and load calculation and the adjustment of the electric heating medium-frequency power supply current are carried out according to the latest suspension point load data.
The device and the method for real-time interlocking automatic control of electric heating of the ultra-heavy oil well shaft can automatically make judgment and give instructions by reading suspension point load data, realize the automatic adjustment function, avoid the error of manual adjustment and reduce the labor intensity.
Drawings
FIG. 1 is a block diagram of an embodiment of an electrical heating real-time interlocking automatic control device for an ultra-heavy oil well bore according to the present invention;
fig. 2 is a schematic diagram of a touch panel of an electrical heating real-time interlocking automatic control device for an ultra-heavy oil wellbore in an embodiment of the invention;
fig. 3 is a flowchart of an embodiment of the real-time interlocking automatic control method for electric heating of the ultra-heavy oil well casing according to the present invention.
Detailed Description
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
As shown in fig. 1, fig. 1 is a structural diagram of an electric heating real-time interlocking automatic control device for an ultra-heavy oil well bore according to the present invention. The electric heating real-time interlocking automatic control device for the ultra-heavy oil well shaft consists of a wireless load sensor 01 and a controller 02.
The wireless load sensor 01 is arranged at the position of the rope hanger and used for collecting and transmitting suspension point load data of the oil pumping unit in the reciprocating motion process in real time.
The controller 02 includes a touch panel 021 and a PLC control unit 022, the schematic diagram of the touch panel 021 is shown in fig. 2, and is used for setting maximum and minimum load thresholds and displaying the maximum and minimum load values and the electrical heating intermediate frequency power supply current in real time, the PLC control unit 022 is used for receiving and processing the load data transmitted from the wireless load sensor 01, and calculating the maximum and minimum loads in a period of time, and automatically and continuously adjusting the electrical heating intermediate frequency power supply current by comparing with the maximum and minimum load thresholds.
The invention also provides a real-time interlocking automatic control method for electric heating of the ultra-heavy oil well shaft, as shown in fig. 3, the method comprises the following steps:
firstly, setting a maximum load threshold value and a minimum load threshold value through a touch panel 021;
the PLC control unit 022 receives load data transmitted by the wireless load sensor 01 and calculates a maximum load value and a minimum load value in the last 30 minutes;
when the maximum load value is smaller than the maximum load threshold value or the minimum load value is larger than the minimum load threshold value, keeping the current of the electrical heating medium-frequency power supply unchanged;
otherwise, the PLC control unit 022 automatically adjusts the current of the electric heating medium-frequency power supply to be 0.5A and judges whether the current of the electric heating medium-frequency power supply exceeds the maximum rated current or not, if so, the PLC control unit operates at the maximum rated current, otherwise, the PLC control unit operates at the current;
after 1 hour of operation, the load value needs to be recalculated, and the above process is repeated.
Claims (8)
1. The super heavy oil well shaft electric heating real-time interlocking automatic control device is characterized by comprising a wireless load sensor and a controller, wherein the wireless load sensor is connected to the controller, collects suspension point load data of an oil pumping unit in a reciprocating motion process and transmits the suspension point load data to the controller, a PLC control unit in the controller receives and judges the suspension point load data, calculates the maximum load and the minimum load within a period of time, and automatically and continuously adjusts the electric heating medium-frequency power supply current by comparing with maximum and minimum load thresholds.
2. The device of claim 1, wherein the wireless load sensor is installed at a position of the rope hanger to collect suspension point load data in real time.
3. The real-time interlocking automatic control device for electric heating of ultra-thick oil wellhole according to claim 1, characterized in that the control unit further comprises a touch panel connected to the PLC controller for setting maximum and minimum load thresholds and displaying maximum and minimum load values and electric heating medium frequency power supply current in real time.
4. The real-time linkage automatic control device for the electric heating of the ultra-thick oil well shaft according to claim 1, wherein the PLC control unit calculates a maximum load value and a minimum load value within the last 30 minutes according to suspension point load data transmitted by the wireless load sensor, and when the maximum load value is smaller than a maximum load threshold value or the minimum load value is larger than a minimum load threshold value, the current of an electric heating medium-frequency power supply is kept unchanged; otherwise, the PLC control unit automatically adjusts the current of the electric heating intermediate frequency power supply to be 0.5A and judges whether the current of the electric heating intermediate frequency power supply exceeds the maximum rated current or not, if so, the PLC control unit operates at the maximum rated current, otherwise, the PLC control unit operates at the current.
5. The real-time interlocking automatic control device for electric heating of the ultra-thick oil well shaft according to claim 4, wherein after the PLC control unit operates for 1 hour, load calculation and adjustment of electric heating medium-frequency power supply current are carried out again according to suspension point load data transmitted by the wireless load sensor.
6. The real-time interlocking automatic control method for the electric heating of the ultra-thick oil well shaft is characterized by comprising the following steps of:
step 1, setting a maximum load threshold value and a minimum load threshold value;
and 2, calculating the maximum load and the minimum load within a period of time according to the suspension point load data, and regulating the current of the electrical heating medium-frequency power supply by comparing with the maximum load threshold and the minimum load threshold.
7. The real-time linkage automatic control method for electric heating of the ultra-thick oil well casing according to claim 6, wherein in the step 2, the maximum load value and the minimum load value within the last 30 minutes are calculated according to the suspension point load data, and when the maximum load value is smaller than the maximum load threshold value and the minimum load value is larger than the minimum load threshold value, the current of the electric heating medium-frequency power supply is kept unchanged; otherwise, automatically adjusting the current of the electric heating intermediate frequency power supply to be 0.5A, judging whether the current of the electric heating intermediate frequency power supply exceeds the maximum rated current, if so, operating at the maximum rated current, otherwise, operating at the current.
8. The method according to claim 7, further comprising, after the step 2, running for 1 hour, returning to the step 2, and performing load calculation and adjustment of the current of the electrical heating medium frequency power supply according to the latest suspension point load data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811218323.2A CN111075396A (en) | 2018-10-18 | 2018-10-18 | Real-time interlocking automatic control device and method for electric heating of ultra-heavy oil well shaft |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811218323.2A CN111075396A (en) | 2018-10-18 | 2018-10-18 | Real-time interlocking automatic control device and method for electric heating of ultra-heavy oil well shaft |
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| CN111075396A true CN111075396A (en) | 2020-04-28 |
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| CN201811218323.2A Pending CN111075396A (en) | 2018-10-18 | 2018-10-18 | Real-time interlocking automatic control device and method for electric heating of ultra-heavy oil well shaft |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6353706B1 (en) * | 1999-11-18 | 2002-03-05 | Uentech International Corporation | Optimum oil-well casing heating |
| CN2602155Y (en) * | 2002-11-22 | 2004-02-04 | 天津大港油田维罗电缆有限责任公司 | Automatic temperature control electric heating rod frequency conversion heating arrangement |
| CN201934061U (en) * | 2011-01-10 | 2011-08-17 | 中国石油天然气股份有限公司 | Electric heating automatic control system of pumping well |
| CN102587861A (en) * | 2011-01-10 | 2012-07-18 | 中国石油天然气股份有限公司 | System and method for automatic electric heating control for oil pumping well |
| CN204271923U (en) * | 2014-11-25 | 2015-04-15 | 东营咸亨工贸有限公司 | Full-numerical-control heavy crude heat extraction intermediate frequency power supply equipment and there is its long distance control system |
| CN107816334A (en) * | 2016-09-12 | 2018-03-20 | 中国石油天然气股份有限公司 | Control the method and device of sucker rod heating |
-
2018
- 2018-10-18 CN CN201811218323.2A patent/CN111075396A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6353706B1 (en) * | 1999-11-18 | 2002-03-05 | Uentech International Corporation | Optimum oil-well casing heating |
| CN2602155Y (en) * | 2002-11-22 | 2004-02-04 | 天津大港油田维罗电缆有限责任公司 | Automatic temperature control electric heating rod frequency conversion heating arrangement |
| CN201934061U (en) * | 2011-01-10 | 2011-08-17 | 中国石油天然气股份有限公司 | Electric heating automatic control system of pumping well |
| CN102587861A (en) * | 2011-01-10 | 2012-07-18 | 中国石油天然气股份有限公司 | System and method for automatic electric heating control for oil pumping well |
| CN204271923U (en) * | 2014-11-25 | 2015-04-15 | 东营咸亨工贸有限公司 | Full-numerical-control heavy crude heat extraction intermediate frequency power supply equipment and there is its long distance control system |
| CN107816334A (en) * | 2016-09-12 | 2018-03-20 | 中国石油天然气股份有限公司 | Control the method and device of sucker rod heating |
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Inventor after: Wei Gang Inventor after: Wu Chao Inventor after: Song Shengnan Inventor after: Xu Jianpeng Inventor after: Wei Hai Inventor after: Zhao Xiahu Inventor after: Han Yujun Inventor after: Wan Qing Inventor after: Li Taizhou Inventor after: Zhang Jufang Inventor before: Wei Gang Inventor before: Wu Chao Inventor before: Song Shengnan Inventor before: Xu Jianpeng Inventor before: Wei Hai Inventor before: Zhao Xiahu Inventor before: Han Yujun Inventor before: Wan Qing Inventor before: Li Taizhou Inventor before: Zhang Jufang |
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Inventor after: Wei Gang Inventor after: Wu Chao Inventor after: Wu Jie Inventor after: Yang Lei Inventor after: Han Yinghua Inventor after: Li Yan Inventor after: Song Shengnan Inventor after: Xu Jianpeng Inventor after: Wei Hai Inventor after: Zhao Xiahu Inventor after: Han Yujun Inventor after: Wan Qing Inventor after: Li Taizhou Inventor after: Zhang Jufang Inventor before: Wei Gang Inventor before: Wu Chao Inventor before: Song Shengnan Inventor before: Xu Jianpeng Inventor before: Wei Hai Inventor before: Zhao Xiahu Inventor before: Han Yujun Inventor before: Wan Qing Inventor before: Li Taizhou Inventor before: Zhang Jufang |
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Application publication date: 20200428 |