CN201786627U - Electric connecting device for coalbed methane well production by electric submersible pump - Google Patents
Electric connecting device for coalbed methane well production by electric submersible pump Download PDFInfo
- Publication number
- CN201786627U CN201786627U CN2010205325011U CN201020532501U CN201786627U CN 201786627 U CN201786627 U CN 201786627U CN 2010205325011 U CN2010205325011 U CN 2010205325011U CN 201020532501 U CN201020532501 U CN 201020532501U CN 201786627 U CN201786627 U CN 201786627U
- Authority
- CN
- China
- Prior art keywords
- submersible pump
- electric submersible
- voltage
- constant voltage
- transformer
- 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
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to an electric connecting device for coalbed methane well production by an electric submersible pump. The electric connecting device comprises a transformer, a frequency converter, a filter and an electric submersible pump, ground power supply output rated voltage is boosted by the transformer, the transformer is connected with the frequency converter electrically, boosted voltage is converted to constant voltage via the frequency converter, the constant voltage is then output, the frequency converter is electrically connected with the filter, the constant voltage is filtered by the filter, the filter is electrically connected with the electric submersible pump via a long cable, and the filtered constant voltage is delivered to the electric submersible pump via the long cable. Extra power loss and harmonic interference caused along with leading-in of cables can be reduced effectively, leakage current on the cable is reduced, the electric submersible pump is provided with sufficient power and can keep normal operation, burnout of a motor is avoided so that service life of the electric submersible pump is prolonged obviously and comprehensive benefits of recovery rate and coalbed methane production are increased.
Description
Technical field
The utility model relates to the coal-bed gas exploitation technical field, relates in particular to a kind of coal bed gas well electric submersible pump row and adopts electrical connection arrangement.
Background technique
Rich coal resources in China contains the CH4 methane gas in the coal-seam gas.In order to make full use of the energy, solve the problem of energy scarcity, country supports exploiting coal bed methane energetically.
At present, coal-bed gas exploitation mainly adopts flow production and induces lifting exploitation dual mode.Inducing lifting exploitation is by the artesian water in the pump drainage coal seam, reduces coal seam pressure, and the way that the methane gas that adsorbs in the coal seam is discharged realizes.Normal conditions adopt pumping unit formula reciprocating pump, electric submersible pump and screw pump to realize that the row of coal-seam gas adopts.
Pumping unit formula reciprocating pump row adopts and has some shortcomings, as: 1, intermittently draw water: the movement locus of oil pumping machine oil pumping bar is to pump, and reciprocal speed is relatively slow, and water-out manners is an intermittent drainage, and the method can cause the continuous fluctuation of down-hole liquid level.It is disadvantageous that the continuous fluctuation of down-hole liquid level is adopted for coal-seam gas row.2, power consumption is big: the sport efficiency of pumping unit is lower, and the power consumption that drives equipment is bigger, not energy saving.3, the repair cycle is short: the sucker rod to-and-fro motion of pumping unit formula reciprocating pump realizes the to-and-fro motion of piston, and sucker rod and oil pipe friction take place in the down-hole; Reciprocating pump generation sand plug phenomenon is serious, so pump detection period is shorter.
The Chinese patent publication number is that disclosed a kind of coal bed gas well intelligence dress rehearsal method and the coal bed gas well immersed pump intelligence row of CN101666223A adopts equipment, its immersed pump row adopts and has following shortcoming, as: 1, downhole electrical motor and submerged centrifugal pump apart from ground from hundreds of approximately rice to last km, long like this power cable is introduced the harmonious wave interference of extra power loss, cause on the power cable leakage current excessive, the cable heating is easily aging; The power supply voltage deficiency of motor side, long-term work are burnt motor easily in the hazardous condition of under-voltage overcurrent; 2, because motor submerged centrifugal pump discharge capacity is big, long-term non-stop run meeting causes drawdown too fast, even underground water occurs by the phenomenon of draining and burning motor; And if underground water descends rapidly suddenly when adopting the intermittently used mode to cause machine operation, level of ground water can be gone up again suddenly during shutdown, is difficult to the technological requirement that realizes that underground water steadily descends.Water column when shutting down simultaneously in the drinking-water pipe produces " water hammer " phenomenon under action of gravity, underground equipment and coal seam are produced disadvantageous impact.
The model utility content
The technical problems to be solved in the utility model is: provide a kind of coal bed gas well electric submersible pump row to adopt electrical connection arrangement, this device can effectively avoid electric submersible pump owing to under-voltage overcurrent burns, and guarantees that effectively electric submersible pump runs well.
In order to overcome the defective that exists in the background technique, the technological scheme that its technical problem that solves the utility model adopts is: a kind of coal bed gas well electric submersible pump row adopts electrical connection arrangement, comprise transformer, frequency variator, wave filter and electric submersible pump, the surface power supply output rated voltage is boosted through transformer, transformer and frequency variator electrically connect, voltage after boosting is through frequency variator output constant voltage, frequency variator and wave filter electrically connect, constant voltage is through filter filtering, wave filter and electric submersible pump electrically connect by long cable, and filtered constant voltage is delivered to electric submersible pump by long cable.
According to another embodiment of the present utility model, coal bed gas well electric submersible pump row adopts electrical connection arrangement and comprises that further voltage range after described voltage rating is boosted is 450 to 470V.
According to another embodiment of the present utility model, coal bed gas well electric submersible pump row adopts electrical connection arrangement and comprises that further described constant voltage is 430V.
According to another embodiment of the present utility model, coal bed gas well electric submersible pump row adopts electrical connection arrangement and comprises that further described wave filter is a sine wave filter.
According to another embodiment of the present utility model, coal bed gas well electric submersible pump row adopts electrical connection arrangement and comprises that further described voltage rating is 380V.
The utility model has solved the defective that exists in the background technique, the utility model can effectively reduce cable and introduce extra power loss and humorous wave interference, reduce leakage current on the cable, the electric submersible pump power supply is sufficient, guarantee the electric submersible pump proper functioning, avoid burn-down of electric motor, significantly improved the working life of electric submersible pump, improved the comprehensive benefit of recovery rate and coal-bed gas exploitation.
Description of drawings
Fig. 1 is the structural representation of preferred embodiment of the present utility model;
Embodiment
With preferred embodiment the utility model is described in further detail in conjunction with the accompanying drawings now.These accompanying drawings are the schematic representation of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
As shown in Figure 1, a kind of coal bed gas well electric submersible pump row adopts electrical connection arrangement, comprise transformer, frequency variator, wave filter and electric submersible pump, the surface power supply output rated voltage is boosted through transformer, and transformer and frequency variator electrically connect, and the voltage after boosting is through frequency variator output constant voltage, frequency variator and wave filter electrically connect, constant voltage is through filter filtering, and wave filter and electric submersible pump electrically connect by long cable, and filtered constant voltage is delivered to electric submersible pump by long cable.Wherein, described voltage rating is 380V.
And the voltage range of the preferred voltage rating of voltage rating after boosting is 450 to 470V., as the voltage after boosting is 460V.And the preferred constant voltage of constant voltage is 430V.Described wave filter is a sine wave filter.Because ground is longer to underground distance, cable is equal to resistance, and constant voltage consumes a part of voltage on long cable, and by the voltage that long cable is transported to electric submersible pump 380V is arranged still, effectively guarantee the normal operation of electric submersible pump, improved the comprehensive benefit of recovery rate and coal-bed gas exploitation.
With above-mentioned foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this model utility technological thought.The technical scope of this model utility is not limited to the content on the specification, must determine its technical scope according to the claim scope.
Claims (5)
1. a coal bed gas well electric submersible pump row adopts electrical connection arrangement, it is characterized in that: comprise transformer, frequency variator, wave filter and electric submersible pump, the surface power supply output rated voltage is boosted through transformer, transformer and frequency variator electrically connect, voltage after boosting is through frequency variator output constant voltage, frequency variator and wave filter electrically connect, constant voltage is through filter filtering, wave filter and electric submersible pump electrically connect by long cable, and filtered constant voltage is delivered to electric submersible pump by long cable.
2. coal bed gas well electric submersible pump as claimed in claim 1 row adopts electrical connection arrangement, it is characterized in that: the voltage range after described voltage rating is boosted is 450 to 470V.
3. coal bed gas well electric submersible pump row as claimed in claim 1 adopts electrical connection arrangement, and it is characterized in that: described constant voltage is 430V.
4. coal bed gas well electric submersible pump row as claimed in claim 1 adopts electrical connection arrangement, and it is characterized in that: described wave filter is a sine wave filter.
5. coal bed gas well electric submersible pump row as claimed in claim 1 adopts electrical connection arrangement, and it is characterized in that: described voltage rating is 380V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205325011U CN201786627U (en) | 2010-09-17 | 2010-09-17 | Electric connecting device for coalbed methane well production by electric submersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205325011U CN201786627U (en) | 2010-09-17 | 2010-09-17 | Electric connecting device for coalbed methane well production by electric submersible pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201786627U true CN201786627U (en) | 2011-04-06 |
Family
ID=43818592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205325011U Expired - Fee Related CN201786627U (en) | 2010-09-17 | 2010-09-17 | Electric connecting device for coalbed methane well production by electric submersible pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201786627U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403909A (en) * | 2010-09-17 | 2012-04-04 | 常州凯锐自动化控制设备有限公司 | Drainage and mining electrical connection method for coal seam gas well electric submersible pump and device thereof |
| CN112283091A (en) * | 2020-10-22 | 2021-01-29 | 中海石油(中国)有限公司深圳分公司 | Remote electric submersible pump starting and control simulation system and test method |
-
2010
- 2010-09-17 CN CN2010205325011U patent/CN201786627U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403909A (en) * | 2010-09-17 | 2012-04-04 | 常州凯锐自动化控制设备有限公司 | Drainage and mining electrical connection method for coal seam gas well electric submersible pump and device thereof |
| CN112283091A (en) * | 2020-10-22 | 2021-01-29 | 中海石油(中国)有限公司深圳分公司 | Remote electric submersible pump starting and control simulation system and test method |
| CN112283091B (en) * | 2020-10-22 | 2022-09-02 | 中海石油(中国)有限公司深圳分公司 | Remote electric submersible pump starting and control simulation system and test method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20180320492A1 (en) | Device and method for water drainage and gas production by pressure control and gas lift | |
| CN101446281B (en) | Drainage device for coal bed gas well electric submersible centrifugal pump | |
| CN201461429U (en) | Novel submersible direct drive screw pump | |
| CN201461346U (en) | Two-way plunger piston oil-extraction electric pump | |
| CN201786627U (en) | Electric connecting device for coalbed methane well production by electric submersible pump | |
| CN201705635U (en) | Sand prevention deloading linear motor oil extraction pump | |
| CN105422053B (en) | Oil-submersible direct-drive screw pump huff and puff oil production device | |
| CN201041141Y (en) | Electric submersible bi-directional oil-pumping anti-sand pump | |
| CN201180636Y (en) | Numerical control reciprocating type oil-submersible motor driven oil pump | |
| CN205533140U (en) | Self-generating rodless oil production device | |
| CN201943926U (en) | Novel power-driven oil-submersible lifting plunger piston defueling pump | |
| CN2888131Y (en) | Long-distance hydraulic driven down-hole pumping unit | |
| CN201144831Y (en) | Coal bed gas well electric submersible centrifugal pump discharging and mining device | |
| CN201074584Y (en) | Down-hole oil pumping load-reducing tool | |
| CN203161185U (en) | Underground production pipe column provided with double electric pumps | |
| CN200946487Y (en) | Hydraulic pumping device | |
| CN202249957U (en) | Coal powder spiral anti-blocking device | |
| CN201065842Y (en) | Electric submersible pump set for extremely small displacement well | |
| CN102403909A (en) | Drainage and mining electrical connection method for coal seam gas well electric submersible pump and device thereof | |
| CN211777347U (en) | Underground pressure acquisition device of oil extraction machine | |
| CN210265088U (en) | Energy-saving and environment-friendly well bottom type oil pumping machine | |
| CN203499650U (en) | Magnetic suspension pump integration underground oil extraction device | |
| CN209067462U (en) | A kind of left-handed type rotor submersible screw pump | |
| CN204984371U (en) | Screw -type oil pumping device | |
| CN201103386Y (en) | Helical lifting oil pumping machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Guo Hui Inventor after: Cang Wei Inventor before: Cang Wei |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZANG WEI TO: GUO HUI ZANG WEI |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20150917 |
|
| EXPY | Termination of patent right or utility model |