CN201144831Y - Coal bed gas well electric submersible centrifugal pump discharging and extracting device - Google Patents
Coal bed gas well electric submersible centrifugal pump discharging and extracting device Download PDFInfo
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- CN201144831Y CN201144831Y CNU2007201907223U CN200720190722U CN201144831Y CN 201144831 Y CN201144831 Y CN 201144831Y CN U2007201907223 U CNU2007201907223 U CN U2007201907223U CN 200720190722 U CN200720190722 U CN 200720190722U CN 201144831 Y CN201144831 Y CN 201144831Y
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Abstract
A coal seam gas well submersible electric centrifugal pump discharge and mining device belongs to the coal seam gas exploitation technical field, and is characterized in that: a liquid outlet pipeline is fixed with a pressure sensor and a shaft mouth flow regulator; the lower end of an oil pipe is connected with the outlet end of a submersible electric centrifugal pump; and the inlet end of the submersible electric centrifugal pump is connected with a discharge and mining pump electric machine and a gas-liquid separator. The discharge and mining device has the effects that: (1) high lift and small displacement drainage function is realized through intelligent control; (2) the gas-liquid separator can prevent coal ash from entering into the submersible electric centrifugal pump and can also effectively separate coal seam gas from water so as to ensure the work efficiency and stability of the centrifugal pump; (3) an underground liquid level meter can realize realtime monitoring of underground liquid level, thereby not only monitoring the effects realized by the process of coal seam gas, but also ensuring the high-speed, safe and stable operation of the submersible electric centrifugal pump; (4) under the combined action of a controller, the flow regulator, the underground liquid level meter and the submersible electric centrifugal pump, the 'fixed flow discharge and mining' and 'fixed liquid level discharge and mining' processes needed during coal seam gas exploitation are realized.
Description
Technical field
The utility model relates to the coal-bed gas exploitation technical field, and particularly a kind of row's device for picking of coal bed gas well is the latent centrifugal pump row of the electricity device for picking that a kind of coal bed gas well is used.
Background technique
Rich coal resources in China contains CH in the coal-seam gas
4Methane 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 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 notification number provides a kind of coal bed gas well automatic water pumping gas production device for CN2828309Y.Be made up of ground catcher, automatic water trap and downhole controller, catcher is hinged with above gas recovery well well head test strobe, and automatic water trap places in the oil pipe, and downhole controller is hinged with in the tubing string bottom.This device at any time can out of service and dismounting, can realize the automatic water pumping gas production of coal-seam gas gas recovery well, effectively prevents gas recovery well water outlet water logging and influences ordinary production, can reach the purpose that improves gas output per well, recovery rate and coal-bed gas exploitation whole structure.
The model utility content
The purpose of this utility model is: a kind of drainage device for coal bed gas well electric submersible centrifugal pump is provided, can finishes the coal-seam gas well array and adopt.Realize gas-liquid separation making free gas can not enter centrifugal pump in the down-hole, guarantee centrifugal pump delivery, lift and stabilised efficiency.Improve well yield, improve recovery rate and coal-bed gas exploitation comprehensive benefit.
The technical solution adopted in the utility model is: drainage device for coal bed gas well electric submersible centrifugal pump is mainly adopted pump motor by controller, oil pipe, cable, the latent centrifugal pump of electricity, well head flow regulator, well head pressure sensor, underground liquid level meter, gas-liquid separator and row and is formed.There is controller on ground, and controller has lead connection down-hole row to adopt pump motor, and controller provides electric energy for row adopts pump motor.Upper end at oil pipe is connected with liquid exit line.Be fixed with pressure transducer and well head flow regulator on liquid exit line, connect the outlet end of the latent centrifugal pump of electricity in the lower end of oil pipe, the entry end of the latent centrifugal pump of electricity is connected with row and adopts pump motor and gas-liquid separator.
The entry end connection gas-liquid separator of the latent centrifugal pump of electricity and row adopt pump motor two kinds of linkage structures.First kind of linkage structure is: the latent centrifugal pump entry end of electricity connects gas-liquid separator, and the gas-liquid separator lower end connects row and adopts pump motor.Gas-liquid separator has center hole, and the pto that row adopts pump motor passes the gas-liquid separator center hole and is connected with the latent centrifugal pump main shaft of electricity.Second kind of linkage structure is: the latent centrifugal pump lower end of electricity connects row and adopts pump motor, and the pto that row adopts pump motor is connected with the latent centrifugal pump main shaft of electricity.The power that row adopts pump motor is directly passed to the latent centrifugal pump of electricity.Gas-liquid separator is connected the lower end of the latent centrifugal pump motor of electricity.Adopt the outer sleeve that is with of pump motor row, sleeve lining and row adopt the annular pass between the pump motor, and the liquid that gas-liquid separator separates goes out can enter the electricity centrifugal pump inlet of diving by the annular pass, simultaneously row is adopted pump motor and cools off.
For pump motor is adopted by the row of control, arranging the bottom of adopting pump motor in sleeve pipe has the underground liquid level meter, and underground liquid level is in respect of wire connection controller; Be fixed with pressure transducer on liquid exit line, pressure transducer has wire connection controller; Be connected with flow regulator on liquid exit line, flow regulator has wire connection controller.Controller has centralized control unit, realizes the intelligent control of coal-bed gas exploitation process.
The beneficial effects of the utility model are: drainage device for coal bed gas well electric submersible centrifugal pump, extract water in the coal bed gas well by the electricity centrifugal pump of diving, and in pump process continuously, the inflammable gas in the coal seam is discharged.Gas-liquid separator comes gas-liquid separation in the down-hole, and gas can not enter the latent centrifugal pump of electricity, guarantees the stable of electricity latent centrifugal pump discharge capacity, lift and efficient, and the infringement blade of avoiding cavitating.By intelligent control, realize big lift, the draining of float amount, improve well yield, improve recovery rate and coal-bed gas exploitation comprehensive benefit.
Description of drawings
Fig. 1 is the utility model drainage device for coal bed gas well electric submersible centrifugal pump schematic representation, is embodiment 1 schematic representation.
Fig. 2 is the utility model drainage device for coal bed gas well electric submersible centrifugal pump schematic representation, is embodiment 2 schematic representation.
Among the figure: 1. controller, 2. sleeve pipe, 3. oil pipe, 4. pressure transducer, 5. flow regulator, 6. cable, the 7. electricity centrifugal pump of diving, 8. gas-liquid separator, 9. row adopts pump motor, 10. underground liquid level meter.
Embodiment
Embodiment 1: consult Fig. 1.The utility model drainage device for coal bed gas well electric submersible centrifugal pump, the latent centrifugal pump 7 of the electricity of employing are the latent centrifugal pumps of the multistage electricity of big lift.Cable 6 connects latent centrifugal pump 7 of electricity and controller 1, for the latent centrifugal pump 7 of electricity provides power.The latent centrifugal pump 7 of electricity can reach 800 meters lifts, 0.1m by control system control
3The flow in/sky.Primary component in the controller 1 comprises centralized control unit (as PLC), frequency variator, man-machine interface etc.Controller 1 can be realized to the closed loop control of pump with to the control of the flow regulator 5 of water outlet.On ground, controller 1 has lead connection down-hole row to adopt pump motor 9.Be connected with horizontal liquid exit line in the upper end of oil pipe 3.Flow regulator 5 is installed on the liquid exit line.Connect latent centrifugal pump 7 outlet end of electricity in the lower end of oil pipe 3.Latent centrifugal pump 7 lower ends of electricity connect gas-liquid separator 8, and gas-liquid separator 8 has center hole.The lower end of gas-liquid separator 8 connects row and adopts pump motor 9, and the center hole of the pto that row adopts pump motor 9 by gas-liquid separator 8 and electricity centrifugal pump 7 main shafts of diving are connected, and the power that row adopts pump motor 9 is directly passed to electric latent centrifugal pump 7 by output shaft.
Arranging the bottom of adopting pump motor 9 in sleeve pipe 2 has underground liquid level meter 10, and underground liquid level meter 10 is pressure transducers, can detect the pressure of fluid column in the well, is scaled the height of fluid column.Underground liquid level meter 10 has wire connection controller 1; Be fixed with pressure transducer 4 on liquid exit line, pressure transducer 4 has wire connection controller 1; Flow regulator 5 is installed on liquid exit line, and flow regulator 5 has wire connection controller 1.Controller 1 has centralized control unit (as programmable logic controller (PLC) PLC).The numerical value that centralized control unit is gathered according to pressure transducer 4, underground liquid level meter 10, control row adopts pump motor 9, and control flow rate regulator 5 reaches the purpose of controlling the down-hole liquid produced quantity.
Embodiment 2: substantially the same manner as Example 1, difference is:
Latent centrifugal pump 7 entry ends of electricity connect row and adopt pump motor 9, and row adopts pump motor 9 lower ends and connects gas-liquid separator 8.Be with a sleeve outward what row adopted pump motor 9, sleeve lining and row adopt between the shell of pump motor 9 annular pass.After gas-liquid separator 8 isolated liquid are adopted the annular pass of pump motor 9 peripheries by row, enter latent centrifugal pump 7 inlets of electricity again.When liquid is adopted the annular pass of pump motor 9 peripheries by row, can adopt pump motor 9 radiating and coolings for row, protection row adopts pump motor 9 stable operations, increases the service life.
Claims (5)
1, a kind of drainage device for coal bed gas well electric submersible centrifugal pump, mainly by controller (1), oil pipe (3), cable (6), the latent centrifugal pump (7) of electricity, gas-liquid separator (8), well head flow regulator (5), well head pressure sensor (4), gas-liquid separator (8) and row adopt pump motor (9) and form, there is controller (1) on ground, controller (1) has lead connection down-hole row to adopt pump motor (9), be connected with liquid exit line in oil pipe (3) upper end, it is characterized in that: on liquid exit line, be fixed with pressure transducer (4) and well head flow regulator (5), the outlet end that connects the latent centrifugal pump (7) of electricity in the lower end of oil pipe (3), the entry end of the latent centrifugal pump (7) of electricity is connected with row and adopts pump motor (9) and gas-liquid separator (8).
2, drainage device for coal bed gas well electric submersible centrifugal pump according to claim 1, it is characterized in that: latent centrifugal pump (7) entry end of electricity connects gas-liquid separator (8), gas-liquid separator (8) lower end connects row and adopts pump motor (9), gas-liquid separator (8) has center hole, and the pto that row adopts pump motor (9) passes gas-liquid separator (8) center hole and is connected with latent centrifugal pump (7) main shaft of electricity.
3, drainage device for coal bed gas well electric submersible centrifugal pump according to claim 1, it is characterized in that: latent centrifugal pump (7) lower end of electricity connects row and adopts pump motor (9), the pto that row adopts pump motor (9) is connected with latent centrifugal pump (7) main shaft of electricity, the power that row adopts pump motor (9) is directly passed to the latent centrifugal pump (7) of electricity, the lower end of pump motor (9) is adopted by gas-liquid separator (8) row of being connected, adopt the outer sleeve that is with of pump motor (9) row, sleeve lining and row adopt between the pump motor (9) the annular pass, and the isolated liquid of gas-liquid separator (8) can enter latent centrifugal pump (7) inlet of electricity by the annular pass.
4, according to claim 1,2 or 3 described drainage device for coal bed gas well electric submersible centrifugal pump, it is characterized in that: underground liquid level meter (10) is arranged at the bottom in sleeve pipe (2), and underground liquid level meter (10) has wire connection controller (1); Be fixed with pressure transducer (4) on liquid exit line, pressure transducer (4) has wire connection controller (1); Be connected with flow regulator (5) on liquid exit line, flow regulator (5) has wire connection controller (1), and controller has centralized control unit in (1).
5, according to claim 1,2 or 3 described drainage device for coal bed gas well electric submersible centrifugal pump, it is characterized in that: the described electricity centrifugal pump (7) of diving adopts the multistage electricity centrifugal pump of diving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201907223U CN201144831Y (en) | 2007-12-12 | 2007-12-12 | Coal bed gas well electric submersible centrifugal pump discharging and extracting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201907223U CN201144831Y (en) | 2007-12-12 | 2007-12-12 | Coal bed gas well electric submersible centrifugal pump discharging and extracting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201144831Y true CN201144831Y (en) | 2008-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201907223U Expired - Lifetime CN201144831Y (en) | 2007-12-12 | 2007-12-12 | Coal bed gas well electric submersible centrifugal pump discharging and extracting device |
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| CN (1) | CN201144831Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446281B (en) * | 2007-11-27 | 2010-12-08 | 北京超拓远大石油科技有限公司 | Drainage device for coal bed gas well electric submersible centrifugal pump |
| CN110500070A (en) * | 2019-08-23 | 2019-11-26 | 中国石油天然气股份有限公司 | A kind of continuous pipe water sampling device of preset cable flexible compound and method |
| CN110905453A (en) * | 2019-12-16 | 2020-03-24 | 四川航天烽火伺服控制技术有限公司 | Drainage and gas production device for coal bed gas well |
-
2007
- 2007-12-12 CN CNU2007201907223U patent/CN201144831Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446281B (en) * | 2007-11-27 | 2010-12-08 | 北京超拓远大石油科技有限公司 | Drainage device for coal bed gas well electric submersible centrifugal pump |
| CN110500070A (en) * | 2019-08-23 | 2019-11-26 | 中国石油天然气股份有限公司 | A kind of continuous pipe water sampling device of preset cable flexible compound and method |
| CN110905453A (en) * | 2019-12-16 | 2020-03-24 | 四川航天烽火伺服控制技术有限公司 | Drainage and gas production device for coal bed gas well |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081105 |