CN203515481U - Automatic control device for electric heating of hollow rod - Google Patents
Automatic control device for electric heating of hollow rod Download PDFInfo
- Publication number
- CN203515481U CN203515481U CN201320525824.1U CN201320525824U CN203515481U CN 203515481 U CN203515481 U CN 203515481U CN 201320525824 U CN201320525824 U CN 201320525824U CN 203515481 U CN203515481 U CN 203515481U
- Authority
- CN
- China
- Prior art keywords
- hollow stem
- electrical heating
- temperature
- monitoring modular
- measuring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The utility model provides an automatic control device for electric heating of a hollow rod. The automatic control device comprises a monitoring module (1), a judgment module (2) and a control module (3), wherein the monitoring module (1) comprises a plurality of down hole temperature sensors (11) arranged inside a shaft and used for measuring the down hole temperature; the judgment module (2) can compare and analyze signals received from the monitoring module (1); the control module (3) can control a heating device (5) inside the hollow rod (4) according to the comparison and analysis result of the judgment module (2). The automatic control device for electric heating of the hollow rod can simplify the operation processes on site, prevent the situations that the electric heating device of the hollow rod is started or closed not timely and then economic losses are caused, and the economic benefits of thermal recovery of thickened oil are improved.
Description
Technical field
The utility model relates to the Technology of Heavy Oil Recovery field, particularly a kind of device that can automatically control the normal production of the auxiliary thick oil thermal extraction of hollow stem electrical heating.
Background technology
Viscous crude is in thermal process, and especially steam flooding and SAGD initial stage of production, cyclic steam stimulation latter stage, viscosity of crude is higher, is high-efficiency mining, needs supporting viscosity reducing technique; The initial stage of production of steam flooding and SAGD and cyclic steam stimulation latter stage, viscosity of crude is higher, and in heavy oil wells manufacturing process, conventional hollow stem electrical heating process carries out viscosity reduction to the fluid in pit shaft.And in steam soak initial stage or steam flooding and SAGD exploitation middle and later periods (after the foundation of shaft bottom thermal communication), bottom hole temperature (BHT) just no longer needs to carry out viscosity reduction after reaching crude oil lifting condition, but on the turnover opportunity of these two development phases, need field personnel to judge according to wellhead production temperature, and then carry out corresponding manual operations startup or close hollow stem electric heater unit, can not Real-Time Monitoring well head production fluid temperature start or close electric heater unit, affected on the one hand the normal production of oil well, caused again on the other hand the waste of large volume and electricity, had a strong impact on the economic benefit of heavy crude heat extraction.
Utility model content
In order to solve in prior art the technical problem that can not Real-Time Monitoring well head production fluid temperature starts or close electric heater unit, the utility model provides a kind of hollow stem electrical heating automaton.This hollow stem electrical heating automaton can be simplified execute-in-place operation, avoids starting or closing hollow stem electric heater unit and cause not in time economic loss, improves the economic benefit of heavy crude heat extraction.
The utility model for solving the technical scheme of its technical problem employing is: a kind of hollow stem electrical heating automaton, comprises monitoring modular, judging module and control module; Monitoring modular comprises and is arranged on a plurality of for measuring the downhole temperature sensor of downhole temperature in pit shaft, judging module can be carried out contrast and analysis by the signal receiving from monitoring modular, and control module can be according to the heater in the output control hollow stem of the contrast and analysis of judging module.
A plurality of downhole temperature sensors vertically arrange.
Downhole temperature sensor is temperature-measuring optical fiber or thermocouple.
Monitoring modular also comprises a plurality of underground pressure sensor for measuring well downforce that are arranged in pit shaft.
A plurality of underground pressure sensor vertically arrange.
Monitoring modular also comprise be arranged on well head for measuring the wellhead temperature sensor of wellhead production temperature.
Monitoring modular also comprises for measuring the displacement transducer of hollow stem depth of setting.
Heater is heating cable.
The beneficial effects of the utility model are: this hollow stem electrical heating automaton can be simplified execute-in-place operation, avoid starting or closing hollow stem electric heater unit and cause not in time economic loss, improve the economic benefit of heavy crude heat extraction.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, hollow stem electrical heating automaton described in the utility model is described in further detail.
Fig. 1 is the working state schematic representation of hollow stem electrical heating automaton.
Fig. 2 is the circuit block diagram of hollow stem electrical heating automaton.
1. monitoring modulars wherein, 11. downhole temperature sensors, 12. underground pressure sensor, 13. wellhead temperature sensors, 14. displacement transducers, 2. judging module, 3. control module, 4. hollow stem, 5. heater, 6. pit shaft, 7. pump.
The specific embodiment
Below in conjunction with accompanying drawing, hollow stem electrical heating automaton described in the utility model is described in further detail.A hollow stem electrical heating automaton, comprises monitoring modular 1, judging module 2 and control module 3; Monitoring modular 1 comprises and is arranged on a plurality of for measuring the downhole temperature sensor 11 of downhole temperature in pit shaft, judging module 2 can be carried out contrast and analysis by the signal receiving from monitoring modular 1, control module 3 can be according to the heater 5 in the output control hollow stem 4 of the contrast and analysis of judging module 2, as depicted in figs. 1 and 2.
Oil well comprises pit shaft 6, and pit shaft 6 contains hollow stem 4, and the lower end of hollow stem 4 is connected with pump 7, and hollow stem 4 contains heater 5, and heater 5 can heat the annular space of hollow stem 4, thereby reduces former oil viscosity, as shown in Figure 1.Downhole temperature sensor 11 in monitoring modular 1 is lowered in oil well with lifting tubing string, heater 5 is in the process of heating, a plurality of downhole temperature sensors 11 vertically set gradually from the top down, and a plurality of downhole temperature sensors 11 can send to judging module 2 by the temperature signal of different depth in well.Judging module 2 judges in well, whether to have reached predetermined temperature, by two kinds of judgment modes: 1, when the temperature of well head production fluid is desired value, the relation curve of setting up well temperature and the degree of depth is calibration curve, when the temperature pick up 11 of a certain degree of depth monitors temperature corresponding to this degree of depth on the above-mentioned calibration curve that temperature surpassed, can think that well temperature has met standard without heating again, while being 60 ℃ as the target temperature of well head production fluid, the normal temperature at 300 meters of, down-hole is 200 ℃, actual measured value is 210 ℃ herein, show that heating has met standard without heating again, which can be referred to as " temperature judgement ", 2, when the temperature of well head production fluid is desired value, the relation curve of setting up well temperature and the degree of depth is calibration curve, it is the temperature of another degree of depth on this calibration curve that the temperature pick up 11 of supposing a certain degree of depth monitors temperature, contrast the size of this certain degree of depth and this another degree of depth, if this certain degree of depth is less than this another degree of depth, show still to have reached heating standard, without heating again, if this certain degree of depth is greater than this another degree of depth, show not yet to reach heating standard, also need to continue heating, while being 60 ℃ as the target temperature of well head production fluid, the normal temperature at 300 meters of, down-hole is 200 ℃, and the actual measured value in, 280 meters of down-holes is 200 ℃, show that heating has reached standard, without heating again, which can be referred to as " position judgment ".Whether above-mentioned " temperature judgement " and " position judgment " comparative analysis method all can be up to standard for judging the temperature of down-hole, if judging module 2 is judged without heating again, to control module 3, send the signal that stops heating, the heater 5 that control module 3 can be controlled in hollow stem 4 stops heating, if judging, judging module 2 need to heat again, to control module 3, send the signal that continues heating, the heater 5 that control module 3 can be controlled in hollow stem 4 continues heating.Wherein, downhole temperature sensor 11 is temperature-measuring optical fiber or thermocouple.
Monitoring modular 1 also comprises a plurality of underground pressure sensor 12 for measuring well downforce that are arranged in pit shaft.A plurality of underground pressure sensor 12 vertically arrange.The relation curve that judging module 2 not only can be set up well temperature and the degree of depth is calibration curve, and judging module 2 can also be set up the relation curve of borehole pressure and the degree of depth.
Monitoring modular 1 also comprise be arranged on well head for measuring the wellhead temperature sensor 13 of wellhead production temperature.The utility model employing " temperature judgement " and the actual effect of " position judgment " are stronger, simultaneously, measure well head temperature pick up 13 further safety guarantee can be provided, when if above-mentioned two kinds of judgment modes go wrong, while measuring temperature that well head temperature pick up 13 detects well head production fluid higher than desired value, judging module 2 also can be sent the signal that stops heating to control module 3, thereby accuracy and the safety of control are provided.
In order to understand the depth of setting of hollow stem 4, be convenient to " temperature judgement " and " position judgment ", monitoring modular 1 also comprises for measuring the displacement transducer 14 of hollow stem 4 depth of settings.The lower end of general hollow stem 4 is connected with pump 7, and the depth of setting of hollow stem 4 just equals the degree of depth of pump 7.In addition, heater 5 is heating cable.
The above; be only specific embodiment of the utility model, can not limit the scope that utility model is implemented with it, so the displacement of its equivalent assemblies; or the equivalent variations of doing according to the utility model scope of patent protection and modification, all should still belong to the category that this patent is contained.
Claims (8)
1. a hollow stem electrical heating automaton, is characterized in that, described hollow stem electrical heating automaton comprises monitoring modular (1), judging module (2) and control module (3);
Monitoring modular (1) comprises and is arranged on a plurality of for measuring the downhole temperature sensor (11) of downhole temperature in pit shaft, judging module (2) can be carried out contrast and analysis by the signal receiving from monitoring modular (1), and control module (3) can be according to the heater (5) in the output control hollow stem (4) of the contrast and analysis of judging module (2).
2. hollow stem electrical heating automaton according to claim 1, is characterized in that: a plurality of downhole temperature sensors (11) vertically arrange.
3. hollow stem electrical heating automaton according to claim 1, is characterized in that: downhole temperature sensor (11) is temperature-measuring optical fiber or thermocouple.
4. hollow stem electrical heating automaton according to claim 1, is characterized in that: monitoring modular (1) also comprises a plurality of underground pressure sensor for measuring well downforce (12) that are arranged in pit shaft.
5. hollow stem electrical heating automaton according to claim 4, is characterized in that: a plurality of underground pressure sensor (12) vertically arrange.
6. hollow stem electrical heating automaton according to claim 1, is characterized in that: monitoring modular (1) also comprise be arranged on well head for measuring the wellhead temperature sensor (13) of wellhead production temperature.
7. hollow stem electrical heating automaton according to claim 1, is characterized in that: monitoring modular (1) also comprises the displacement transducer (14) for measuring hollow stem depth of setting.
8. hollow stem electrical heating automaton according to claim 1, is characterized in that: heater (5) is heating cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320525824.1U CN203515481U (en) | 2013-08-27 | 2013-08-27 | Automatic control device for electric heating of hollow rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320525824.1U CN203515481U (en) | 2013-08-27 | 2013-08-27 | Automatic control device for electric heating of hollow rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203515481U true CN203515481U (en) | 2014-04-02 |
Family
ID=50374428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320525824.1U Expired - Fee Related CN203515481U (en) | 2013-08-27 | 2013-08-27 | Automatic control device for electric heating of hollow rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203515481U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106940945A (en) * | 2017-03-17 | 2017-07-11 | 安徽工程大学 | Temperature stress experimental rig |
-
2013
- 2013-08-27 CN CN201320525824.1U patent/CN203515481U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106940945A (en) * | 2017-03-17 | 2017-07-11 | 安徽工程大学 | Temperature stress experimental rig |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9605531B2 (en) | Intelligent test system and method for multi-segment fractured horizontal well | |
| CN102808610B (en) | Coal mine down-hole drilling degree of depth real-time detection apparatus and detection method | |
| CN104806229B (en) | Plunger lift water pumping gas production production logging system and its control method | |
| RU2749661C2 (en) | Downhole monitoring device located in line with the pump rod column | |
| CN103628864B (en) | Multistage pressure break horizontal well intelligent test system and method for testing | |
| CN103277077B (en) | Based on fireflood assisted gravity drainage injection and extraction system and the note mining method of intelligent temperature control | |
| CN108979602A (en) | A kind of oil production machine energy saver and well fluid level model estimation method | |
| CN104005740A (en) | Control circuit and control method for oil gas well multistage perforation detonator | |
| CN203223214U (en) | Coiled tubing cable electric heating device for thick oil horizontal well | |
| US20190211810A1 (en) | Improvements In Or Relating To Geothermal Power Plants | |
| CN203594586U (en) | Protection device for SAGD (Steam Assisted Gravity Drainage) high-temperature electric submersible pump motor | |
| CN203515481U (en) | Automatic control device for electric heating of hollow rod | |
| CN202132029U (en) | Layer mining and testing system for petroleum | |
| CN203570276U (en) | Intermittent oil pumping control system | |
| CN106089162A (en) | The layering section that a kind of double-direction radio identification controls exploits flow string and regulation device | |
| CN203847098U (en) | Underground temperature and pressure parameter measurement device | |
| CN203394508U (en) | Full-automatic multi-parameter acquisition system in water pumping test | |
| CN203177842U (en) | A well wall deformation parameter detecting system based on the control of an ATMEGA128 | |
| CN104912545A (en) | Well testing system combining electric control type oil pipe inner packer and direct reading pressure meter and well testing method combining electric control type oil pipe inner packer and direct reading pressure meter | |
| CN103883316A (en) | Intelligent oil extraction control and measurement system | |
| CN206000524U (en) | Layering section exploitation flow string and regulation device that a kind of double-direction radio identification controls | |
| CN205823264U (en) | Layering is with adopting test string | |
| CN206000525U (en) | A kind of layering section exploitation observing and controlling flow string | |
| CN101787874A (en) | Intelligent injection allocation testing device of water injection well | |
| CN107941675A (en) | Drill slug test test method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20210827 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |