CN117738600A - Energy recovery type range-extending hydraulic network electric workover rig and use method thereof - Google Patents
Energy recovery type range-extending hydraulic network electric workover rig and use method thereof Download PDFInfo
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- 238000004146 energy storage Methods 0.000 claims abstract description 18
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Abstract
The invention relates to the field of oilfield workover, in particular to an energy recovery type range-extending hydraulic network electric workover rig and a use method thereof. The technical proposal is as follows: the walking chassis is provided with a Cheng Dongli source module, a net electric power source module, a hydraulic energy storage module and a hydraulic energy conversion module, wherein the Cheng Dongli source module comprises a first hydraulic pump and a diesel engine, the net electric power source module comprises a motor and a second hydraulic pump, the hydraulic energy storage module comprises an energy accumulator group and a control valve group, and the control valve group is respectively connected with the first hydraulic pump, the second hydraulic pump and the hydraulic energy conversion module through high-pressure hoses. The beneficial effects are that: the invention is driven by the Cheng Dongli source module and the network electric power source module, works by utilizing the principle of hydraulic energy storage, and can also recover energy and store the energy to realize range extension; and the energy accumulator group releases hydraulic oil in the pipe lifting rod operation process, so that the plunger type hydraulic pump motor is pushed to rotate to do work, and then the roller mechanism of the workover rig is driven to work, and the pipe lifting rod operation with heavy load is completed.
Description
Technical Field
The invention relates to the field of oilfield workover, in particular to an energy recovery type range-extending hydraulic network electric workover rig and a use method thereof.
Background
In the petroleum industry, the oil field well repairing operation is mainly aimed at the problems of various faults, low oil production ratio and the like of an oil-water well, and the oil well is inspected, maintained and the like. The lifting hook of the workover rig is always in a repeated circulation working condition of lifting and falling in the lifting and lowering process of the oil pipe rod, the energy consumption requirement in the lifting working condition is large, the working time is small, the workover rig hardly does work in the falling working condition and other auxiliary working condition stages, and the workover rig is in an intermittent working state. Therefore, the continuous operation of the high-power diesel engine meets the intermittent operation condition, and the useless work is larger.
In addition, the high power consumption requirement in the working condition lifting process causes high installed power of the workover rig. Therefore, the application range of the workover rig using the well site pattern electricity as power is limited by the well site installation power, and the workover rig cannot be widely used; the traditional workover rig using the diesel engine as power has the defects of great energy consumption waste and high emission due to long idle work time. However, in the process of lowering the pipe rod (i.e. the joint), not only is power output not needed, but also the lowering speed of the pipe rod is slowed down and maintained by a brake, that is, the gravitational potential energy of the pipe rod string is dissipated through frictional heat generation, so that energy is wasted. In addition, most of traditional workover rigs adopt a mechanical transmission mode, so that a power transmission line is long, and the transmission efficiency is low.
Disclosure of Invention
The invention aims at overcoming the defects in the prior art and provides an energy recovery type range-extending hydraulic network electric workover rig and a use method thereof.
The invention relates to an energy recovery type extended-range hydraulic network electric workover rig, which has the technical scheme that: the power generation system comprises a walking chassis module, wherein the walking chassis module comprises a walking chassis, a Cheng Dongli source module, a network electric power source module, a hydraulic energy storage module and a hydraulic energy conversion module are arranged on the walking chassis, the Cheng Dongli source module comprises a first hydraulic pump and a diesel engine, the diesel engine is fixedly connected with the walking chassis, and the output end of the diesel engine is connected with the first hydraulic pump; the electric power source module comprises a motor and a second hydraulic pump, the motor is fixedly connected with the walking chassis, and the output end of the motor is connected with the second hydraulic pump; the hydraulic energy storage module comprises an energy accumulator group and a control valve group, the energy accumulator group is fixedly connected with the walking chassis, and the control valve group is respectively connected with the first hydraulic pump, the second hydraulic pump and the hydraulic energy conversion module through high-pressure hoses.
Preferably, the hydraulic energy conversion module comprises a plunger hydraulic pump motor, a gearbox, a chain transmission mechanism, a roller mechanism, a bell jar and a coupler, wherein the output end of the plunger hydraulic pump motor is connected with the gearbox through the coupler, the bell jar is arranged on the outer side of the coupler, the gearbox is connected with the roller mechanism through the chain transmission mechanism, and the roller mechanism is fixedly arranged on the upper surface of the walking chassis.
Preferably, the walking chassis module further comprises a supporting leg oil cylinder, an outer derrick, an inner derrick and a derrick supporting seat, wherein the supporting leg oil cylinder is arranged at the rear end of the walking chassis, the derrick supporting seat is arranged on the upper side of the supporting leg oil cylinder, the upper part of the derrick supporting seat is hinged with the outer derrick, the inner derrick is movably arranged at the front end of the outer derrick, and the inner derrick can axially stretch out and draw back.
Preferably, the walking chassis module further comprises a hydraulic oil tank, wherein the hydraulic oil tank is fixedly connected with the front end of the walking chassis, the hydraulic oil tank is connected with the first hydraulic pump through a hydraulic hose, the hydraulic oil tank is connected with the second hydraulic pump through a hydraulic hose, and the hydraulic oil tank is connected with the plunger type hydraulic pump motor through a hydraulic hose.
Preferably, the control valve group is provided with a first hydraulic pump interface, a second hydraulic pump interface and a plunger type hydraulic pump motor interface, the first outlet of the first hydraulic pump is connected through the first hydraulic pump interface, the second outlet of the second hydraulic pump is connected through the second hydraulic pump interface, and the plunger type hydraulic pump motor interface is connected with a third outlet of the plunger type hydraulic pump motor.
Preferably, the Cheng Dongli source module further comprises a diesel engine intercooler, a diesel engine tail gas treatment component and a diesel engine air filter, wherein the diesel engine intercooler is fixedly connected to one side of the diesel engine, and the other side of the diesel engine is fixedly connected with the first hydraulic pump; the top of the diesel engine is provided with a fixed diesel engine tail gas treatment component and a diesel engine air filter, the diesel engine air filter is connected with an air inlet of the diesel engine, and an exhaust outlet of the diesel engine is connected with the diesel engine tail gas treatment component.
Preferably, the network electric power source module further comprises a second bell housing, a second coupler and a wiring port, wherein the output end of the motor is connected with the second hydraulic pump through the second coupler, the second bell housing is arranged on the outer side of the second coupler, the wiring port is arranged on the top of the motor, a second outlet at the upper end of the second hydraulic pump is connected with the control valve bank, and a second inlet at the lower end of the second hydraulic pump is connected with the hydraulic oil tank through a hydraulic hose.
The invention relates to a use method of an energy recovery type extended-range hydraulic network electric workover rig, which comprises the following steps:
1. in the operation process of the pipe lifting rod, when the rod column of the inner pipe of the well is smaller than 1000 m and the load is relatively smaller, only the motor of the net electric power source module is required to work, and the second hydraulic pump is driven to work so as to store hydraulic oil into the energy accumulator group; when the pipe lifting rod is used, hydraulic oil in the energy accumulator group is released, and the hydraulic oil and the second hydraulic pump supply oil to the plunger type hydraulic pump motor simultaneously to enable the plunger type hydraulic pump motor to rotate, so that a roller mechanism of the workover rig is driven to lift;
2. in the operation process of the pipe lifting rod, when the rod column of the inner pipe of the well is larger than 1000 m and the load is relatively large, the motor of the net electric power source module and the diesel engine of the Cheng Dongli source module work simultaneously to drive the second hydraulic pump and the first hydraulic pump to rotate so as to store hydraulic oil into the energy accumulator group, and when the pipe lifting rod is lifted, the pressure oil in the energy accumulator group is released, and the pressure oil and the second hydraulic pump and the first hydraulic pump supply oil to the plunger type hydraulic pump motor simultaneously so as to rotate, so that a roller mechanism of the workover rig is driven to lift;
3. in the operation process of the pipe rod, the motor of the net electric power source module and the diesel engine of the Cheng Dongli source module do not work, and the operation can be completed only by recovering the gravitational potential energy of the pipe rod string; because the gravitational potential energy of the inner pipe rod string of the oil well is relatively large, the oil well is reacted on the plunger type hydraulic pump motor by acting on the chain transmission mechanism, the plunger type hydraulic pump motor works and rotates under the working condition of a pump at the moment, hydraulic oil is stored in an energy accumulator group of the hydraulic energy storage module to recover energy, and meanwhile, the pipe rod string is provided with anti-damping to enable the pipe rod string to be slowly lowered, and the original brake is only used as an auxiliary brake at the moment; the gravitational potential energy of the wasted pipe rod string which is originally subjected to heat dissipation through the brake is recovered and stored, and hydraulic oil stored in the energy accumulator group releases work in the next pipe rod lifting operation process, so that the energy saving purpose is achieved; in addition, when the single oil pipe rod of the wellhead is required to be erected so as to be connected with the oil well inner pipe rod string, the work of erecting the pipe rod can be completed by utilizing the recovered energy.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the intermittent working characteristics of the equipment, the equipment is in a standby energy consumption state for most of the time, only performs high-power output when lifting action is performed, and performs energy collection and storage in an energy accumulator group to complete the energy storage process by utilizing the principle of hydraulic energy storage when the equipment is in a standby state and a heavy object descending state;
2. in the pipe lifting rod operation process, the energy accumulator group releases hydraulic oil, the first hydraulic pump and the second hydraulic pump can simultaneously supply oil to the plunger type hydraulic pump motor, the plunger type hydraulic pump motor is pushed to rotate to do work so as to drive the roller mechanism of the workover rig to work, and the pipe lifting rod operation with large load is completed; in addition, according to different use scenes, the diesel engine is not started in the conventional operation process, and the second hydraulic pump is driven by the electric motor of the network to work; the diesel engine can be independently started to drive the first hydraulic pump to work in a well site without network electricity, so that the reliability of equipment work is ensured;
3. in the process of lowering the oil pipe rod, the plunger type hydraulic pump motor works as a hydraulic pump mode, damping is provided for the roller mechanism through the chain transmission mechanism to replace the original vehicle brake, the original brake is used as an aid, the oil pipe rod is slowly lowered, and meanwhile, under the action of anti-damping, hydraulic oil is stored in the energy accumulator group to store energy, namely: the gravitational potential energy of the wasted oil pipe rod which is originally radiated by the brake is recovered and stored, and the hydraulic oil stored in the energy accumulator group releases work in the next operation process of lifting the oil pipe rod, so that the purposes of extending range and saving energy are achieved.
Drawings
FIG. 1 is a schematic diagram of the overall arrangement of the present invention;
FIG. 2 is a schematic diagram of the structure of the add-on Cheng Dongli source module of the present invention;
FIG. 3 is a schematic diagram of the configuration of the grid power source module of the present invention;
FIG. 4 is a schematic structural view of the hydraulic energy storage module of the present invention;
FIG. 5 is a schematic diagram of the hydraulic energy conversion module of the present invention;
FIG. 6 is a functional block diagram of the present invention;
FIG. 7 is a schematic illustration of the plumbing connections of the control valve block and components of the present invention;
FIG. 8 is a schematic view of the overall structure of the present invention in operation;
FIG. 9 is a schematic view of the overall structure of the invention at another angle in operation;
FIG. 10 is a power comparison of an electric motor power and a conventional diesel engine;
FIG. 11 is a power comparison of a power up Cheng Chaiyou and conventional diesel engine;
in the upper graph: cheng Dongli source module 1, net power source module 2, hydraulic energy storage module 3, hydraulic energy conversion module 4, walking chassis module 5, first hydraulic pump 101, diesel engine 102, diesel engine intercooler 103, diesel engine exhaust treatment component 104, diesel engine air filter 105, electric motor 201, second hydraulic pump 202, second bell housing 203, second coupling 204, wiring port 205, accumulator bank 301, control valve bank 302, plunger hydraulic pump motor 401, gearbox 402, chain drive 403, drum mechanism 404, bell housing 405, coupling 406, walking chassis 501, leg cylinder 502, outer derrick 503, inner derrick 504, hydraulic oil tank 505, derrick support 506, first inlet 101.1, first outlet 101.2, second inlet 202.1, second outlet 202.2, first hydraulic pump interface 302.1, second hydraulic pump interface 302.2, plunger hydraulic pump motor interface 302.3, third inlet 401.1, third outlet 401.2.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
1, referring to fig. 1-11, the energy recovery type extended range hydraulic net electric workover rig of the present invention comprises a walking chassis module 5, wherein the walking chassis module 5 comprises a walking chassis 501, a source module 1 for increasing Cheng Dongli, a net electric power source module 2, a hydraulic energy storage module 3 and a hydraulic energy conversion module 4 are installed on the walking chassis 501, the source module 1 for increasing Cheng Dongli comprises a first hydraulic pump 101 and a diesel engine 102, the diesel engine 102 is fixedly connected with the walking chassis 501, and the output end of the diesel engine 102 is connected with the first hydraulic pump 101; the network electric power source module 2 comprises a motor 201 and a second hydraulic pump 202, wherein the motor 201 is fixedly connected with the walking chassis 501, and the output end of the motor 201 is connected with the second hydraulic pump 202; the hydraulic energy storage module 3 comprises an energy accumulator group 301 and a control valve group 302, the energy accumulator group 301 is fixedly connected with the walking chassis 501, and the control valve group 302 is respectively connected with the first hydraulic pump 101, the second hydraulic pump 202 and the hydraulic energy conversion module 4 through high-pressure hoses.
Referring to fig. 5, the hydraulic energy conversion module 4 according to the present invention includes a plunger hydraulic pump motor 401, a gearbox 402, a chain transmission mechanism 403, a roller mechanism 404, a bell housing 405, and a coupling 406, wherein an output end of the plunger hydraulic pump motor 401 is connected to the gearbox 402 through the coupling 406, the bell housing 405 is installed outside the coupling 406, the gearbox 402 is connected to the roller mechanism 404 through the chain transmission mechanism 403, and the roller mechanism 404 is installed and fixed on an upper surface of the traveling chassis 501. The plunger hydraulic pump motor 401 is provided with a third inlet 401.1 and a third outlet 401.2.
Referring to fig. 1, the walking chassis module 5 of the present invention further includes a leg cylinder 502, an outer derrick 503, an inner derrick 504 and a derrick support 506, wherein the leg cylinder 502 is mounted at the rear end of the walking chassis 501, the derrick support 506 is mounted at the upper side of the leg cylinder 502, the upper part of the derrick support 506 is hinged with the outer derrick 503, the inner derrick 504 is movably mounted at the front end of the outer derrick 503, and the inner derrick 504 can axially stretch.
In addition, the traveling chassis module 5 according to the present invention further includes a hydraulic oil tank 505, wherein the hydraulic oil tank 505 is mounted at the front end of the traveling chassis 501 and is fixedly connected, and the hydraulic oil tank 505 is connected with the first inlet 101.1 of the first hydraulic pump 101 through a hydraulic hose, the hydraulic oil tank 505 is connected with the second inlet 202.1 of the second hydraulic pump 202 through a hydraulic hose, and the hydraulic oil tank 505 is connected with the third inlet 401.1 of the plunger hydraulic pump motor 401 through a hydraulic hose.
Referring to fig. 7, the control valve set 302 according to the present invention is provided with a first hydraulic pump port 302.1, a second hydraulic pump port 302.2, and a plunger hydraulic pump motor port 302.3, and is connected to the first outlet 101.2 of the first hydraulic pump 101 through the first hydraulic pump port 302.1, to the second outlet 202.2 of the second hydraulic pump 202 through the second hydraulic pump port 302.2, and to the third outlet 401.2 of the plunger hydraulic pump motor 401 through the plunger hydraulic pump motor port 302.3, and is connected by a high-pressure hose.
Referring to fig. 2, the Cheng Dongli source module 1 of the present invention further includes a diesel engine intercooler 103, a diesel engine exhaust gas treatment component 104, and a diesel engine air filter 105, where the diesel engine intercooler 103 is fixedly connected to one side of the diesel engine 102, and the other side of the diesel engine 102 is fixedly connected to a first hydraulic pump 101, and the first hydraulic pump 101 is provided with a first inlet 101.1 and a first outlet 101.2, and is connected to a control valve group 302 through the first outlet 101.2; the top of the diesel engine 102 is provided with a fixed diesel engine tail gas treatment component 104 and a diesel engine air filter 105, the diesel engine air filter 105 is connected with an air inlet of the diesel engine 102, and an air outlet of the diesel engine 102 is connected with the diesel engine tail gas treatment component 104.
Referring to fig. 3, the electric power source module 2 of the present invention further includes a second bell housing 203, a second coupling 204, and a connection port 205, the output end of the electric motor 201 is connected to the second hydraulic pump 202 through the second coupling 204, the second bell housing 203 is installed on the outer side of the second coupling 204, the connection port 205 is installed on the top of the electric motor 201, the second outlet 202.2 on the upper end of the second hydraulic pump 202 is connected to the control valve bank 302, and the second inlet 202.1 on the lower end is connected to the hydraulic oil tank 505 through a hydraulic hose.
In the aspect of component layout, the hydraulic transmission connection mode is adopted, so that each module is compact in arrangement, small in occupied space, flexible in position, better in anti-seismic effect and stronger in stability.
The energy recovery, storage and use process of the invention is as follows:
(1) energy storage process when the device is in standby state: hydraulic oil generated by the power source doing work is compressed into the accumulator group 301 for storage; (2) when the weight walks downwards, under the action of gravity, the plunger hydraulic pump motor 401 passively applies work to convert gravitational potential energy into hydraulic energy to be stored in the energy storage set 301, so that the descending speed is controlled, a large amount of energy is recovered and stored, and the hydraulic energy is released and utilized when needed; (3) in the stage of lifting the weight, the system transfers the hydraulic oil of the accumulator set 301 to release pressure, and works together with the power source to form a great resultant force so as to ensure that the whole lifting process is completed. Through the working mode, the traditional power consumption mode of wave crest intermittent circulation is converted into a continuous low-power consumption working mode, so that the installed power of the workover rig is greatly reduced, and the purposes of energy conservation and efficiency improvement are achieved. The invention can be widely used in various well sites, thereby greatly reducing the well repairing cost.
The invention relates to a use method of an energy recovery type extended-range hydraulic network electric workover rig, which comprises the following steps:
1. in the operation process of the pipe lifting rod, when the rod column of the inner pipe of the well is smaller than 1000 m and the load is relatively smaller, only the motor 201 of the net electric power source module 2 is required to work, and the second hydraulic pump 202 is driven to work so as to store hydraulic oil into the energy accumulator group 301; when the pipe lifting rod is used, hydraulic oil in the energy accumulator group 301 is released, and the hydraulic oil and the second hydraulic pump 202 simultaneously supply oil to the plunger type hydraulic pump motor 401 to rotate, so that the roller mechanism 404 of the workover rig is driven to lift;
2. in the operation process of the pipe lifting rod, when the rod column in the well is larger than 1000 m and the load is relatively large, the motor 201 of the net electric power source module 2 and the diesel engine 102 of the power adding Cheng Dongli source module 1 work simultaneously to drive the second hydraulic pump 202 and the first hydraulic pump 101 to rotate so as to store hydraulic oil into the accumulator group 301, and when the pipe lifting rod is lifted, the pressure oil in the accumulator group 301 is released, and the hydraulic oil and the second hydraulic pump 202 and the first hydraulic pump 101 supply oil to the plunger type hydraulic pump motor 401 simultaneously so as to rotate, so that the roller mechanism 404 of the workover rig is driven to lift;
3. in the operation process of the pipe rod, the motor 201 of the net electric power source module 2 and the diesel engine 102 of the Cheng Dongli source module 1 do not work, and the operation can be completed only by the recovered gravitational potential energy of the pipe rod string; because the gravitational potential energy of the inner pipe string of the oil well is relatively large, the gravitational potential energy is reacted on the plunger type hydraulic pump motor 401 by acting on the chain transmission mechanism 403, the plunger type hydraulic pump motor 401 works and rotates under the pump working condition at the moment, hydraulic oil is stored in the energy accumulator group 301 of the hydraulic energy storage module 3 to recover energy, and meanwhile, the pipe string is provided with anti-damping to enable the pipe string to slowly descend, and the original brake is only used as auxiliary brake at the moment; the gravitational potential energy of the wasted pipe rod string which is originally subjected to heat dissipation through the brake is recovered and stored, and the hydraulic oil stored in the energy accumulator group 301 releases work in the next pipe rod lifting operation process, so that the energy saving purpose is achieved; in addition, when the single oil pipe rod of the wellhead is required to be erected so as to be connected with the oil well inner pipe rod string, the work of erecting the pipe rod can be completed by utilizing the recovered energy.
In addition, during operation of the well site with the network electricity, the motor 201 with the network electricity is started preferentially, and the power of the diesel engine 102 is used as the range-increasing supplement, so that the purposes of energy conservation, emission reduction and noise reduction are achieved.
That is, the diesel engine 102 is not started in the normal operation process, but the electric motor 201 drives the hydraulic pump 202 to work, the pressure oil is stored in the accumulator set 301, and when the pipe lifting rod works, the pressure oil in the accumulator set 301 is released, and the hydraulic pump 202 supplies oil to the plunger type hydraulic pump motor 401 to rotate at the same time, so that the roller mechanism 404 of the workover rig is driven to lift; referring to fig. 10, a power comparison of an electric motor power and a conventional diesel engine can be seen;
in the well site operation without network electricity, the range-extended diesel engine 102 can be independently started, the diesel engine 102 does work to store pressure oil into the energy accumulator group 301, and in the working condition of a pipe lifting rod, the pressure oil in the energy accumulator group 301 is released, and the pressure oil and the hydraulic pump 101 simultaneously supply oil to the plunger type hydraulic pump-motor 401 to rotate, so that the roller mechanism 404 of the workover rig is driven to perform lifting operation, and a power comparison diagram of the range-extended diesel engine power and a traditional diesel engine can be seen with reference to fig. 11.
The above description is only a few preferred embodiments of the present invention, and any person skilled in the art may make modifications to the above described embodiments or make modifications to the same. Accordingly, the corresponding simple modifications or equivalent changes according to the technical scheme of the present invention fall within the scope of the claimed invention.
Claims (7)
1. The utility model provides an energy recovery formula increases journey hydraulic pressure net electricity workover rig, includes walking chassis module (5), walking chassis module (5) include walking chassis (501), characterized by: a Cheng Dongli source module (1), a net electric power source module (2), a hydraulic energy storage module (3) and a hydraulic energy conversion module (4) are arranged on a walking chassis (501), the Cheng Dongli source module (1) comprises a first hydraulic pump (101) and a diesel engine (102), the diesel engine (102) is fixedly connected with the walking chassis (501), and the output end of the diesel engine (102) is connected with the first hydraulic pump (101); the network electric power source module (2) comprises a motor (201) and a second hydraulic pump (202), the motor (201) is fixedly connected with the walking chassis (501), and the output end of the motor (201) is connected with the second hydraulic pump (202); the hydraulic energy storage module (3) comprises an energy accumulator group (301) and a control valve group (302), the energy accumulator group (301) is fixedly connected with the walking chassis (501), and the control valve group (302) is respectively connected with the first hydraulic pump (101), the second hydraulic pump (202) and the hydraulic energy conversion module (4) through high-pressure hoses;
the hydraulic energy conversion module (4) comprises a plunger type hydraulic pump motor (401), a gearbox (402), a chain transmission mechanism (403), a roller mechanism (404), a bell jar (405) and a coupler (406), wherein the output end of the plunger type hydraulic pump motor (401) is connected with the gearbox (402) through the coupler (406), the bell jar (405) is arranged on the outer side of the coupler (406), the gearbox (402) is connected with the roller mechanism (404) through the chain transmission mechanism (403), and the roller mechanism (404) is fixedly arranged on the upper surface of the walking chassis (501).
2. The energy recovery type extended range hydraulic network electric workover rig of claim 1, wherein: the walking chassis module (5) also comprises a supporting leg oil cylinder (502), an outer derrick (503), an inner derrick (504) and a derrick supporting seat (506), wherein the supporting leg oil cylinder (502) is arranged at the rear end of the walking chassis (501), the derrick supporting seat (506) is arranged at the upper side of the supporting leg oil cylinder (502), the upper part of the derrick supporting seat (506) is hinged with the outer derrick (503), the inner derrick (504) is movably arranged at the front end of the outer derrick (503), and the inner derrick (504) can axially stretch.
3. The energy recovery type extended range hydraulic network electric workover rig of claim 2, wherein: the walking chassis module (5) further comprises a hydraulic oil tank (505), the hydraulic oil tank (505) is fixedly connected with the front end of the walking chassis (501) in a mounted mode, the hydraulic oil tank (505) is connected with the first hydraulic pump (101) through a hydraulic hose, the hydraulic oil tank (505) is connected with the second hydraulic pump (202) through a hydraulic hose, and the hydraulic oil tank (505) is connected with the plunger type hydraulic pump motor (401) through a hydraulic hose.
4. The energy recovery extended range hydraulic network electric workover rig of claim 3, wherein: the control valve group (302) is respectively provided with a first hydraulic pump interface (302.1), a second hydraulic pump interface (302.2) and a plunger type hydraulic pump motor interface (302.3), the first hydraulic pump interface (302.1) is connected with a first outlet (101.2) of the first hydraulic pump (101), the second hydraulic pump interface (302.2) is connected with a second outlet (202.2) of the second hydraulic pump (202), and the plunger type hydraulic pump motor interface (302.3) is connected with a third outlet (401.2) of the plunger type hydraulic pump motor (401).
5. The energy recovery type extended range hydraulic network electric workover rig of claim 4, wherein: the Cheng Dongli source module (1) further comprises a diesel engine intercooler (103), a diesel engine tail gas treatment component (104) and a diesel engine air filter (105), wherein the diesel engine intercooler (103) is fixedly connected to one side of the diesel engine (102), and the other side of the diesel engine (102) is fixedly connected with the first hydraulic pump (101); the top of the diesel engine (102) is provided with a fixed diesel engine tail gas treatment component (104) and a diesel engine air filter (105), the diesel engine air filter (105) is connected with an air inlet of the diesel engine (102), and an air outlet of the diesel engine (102) is connected with the diesel engine tail gas treatment component (104).
6. The energy recovery type extended range hydraulic network electric workover rig of claim 5, wherein: the net electric power source module (2) also include second bell jar (203), second coupling (204) and wiring mouth (205), second hydraulic pump (202) are connected through second coupling (204) to the output of motor (201), second bell jar (203) are installed in the outside of second coupling (204), wiring mouth (205) are installed at the top of motor (201), second export (202.2) of the upper end of second hydraulic pump (202) be connected with control valves (302), second import (202.1) of lower extreme are connected through hydraulic hose with hydraulic tank (505).
7. The method for using the energy recovery type extended-range hydraulic network electric workover rig according to claim 6, which is characterized in that: the method comprises the following steps:
1. in the operation process of the pipe lifting rod, when the rod column of the inner pipe of the well is smaller than 1000 m and the load is relatively smaller, only the motor (201) of the net electric power source module (2) is required to work, and the second hydraulic pump (202) is driven to work so as to store hydraulic oil into the energy accumulator group (301); when the pipe lifting rod is started, hydraulic oil in the energy accumulator group (301) is released, and oil is supplied to the plunger type hydraulic pump motor (401) simultaneously with the second hydraulic pump (202) to enable the plunger type hydraulic pump motor to rotate, so that a roller mechanism (404) of the workover rig is driven to lift;
2. in the operation process of the pipe lifting rod, when the rod column of the inner pipe of a well is larger than 1000 m and the load is relatively large, a motor (201) of the net electric power source module (2) and a diesel engine (102) of the increase Cheng Dongli source module (1) work simultaneously to drive a second hydraulic pump (202) and a first hydraulic pump (101) to rotate so as to store hydraulic oil into an energy accumulator group (301), and when the pipe lifting rod is lifted, pressure oil in the energy accumulator group (301) is released, and the hydraulic oil and the second hydraulic pump (202) and the first hydraulic pump (101) supply oil to a plunger type hydraulic pump motor (401) simultaneously so as to rotate, so that a roller mechanism (404) of the workover rig is driven to lift;
3. in the operation process of the pipe-down rod, the motor (201) of the net electric power source module (2) and the diesel engine (102) of the increase Cheng Dongli source module (1) do not work, and the operation can be completed only by the recovered gravitational potential energy of the pipe-down rod string; because the gravitational potential energy of the inner pipe rod string of the oil well is relatively large, the oil well is reacted on the plunger type hydraulic pump motor (401) through acting on the chain transmission mechanism (403), at the moment, the plunger type hydraulic pump motor (401) works and rotates under the working condition of a pump, hydraulic oil is stored in the energy accumulator group (301) of the hydraulic energy storage module (3) to recover energy, and meanwhile, the pipe rod string is provided with anti-damping to enable the pipe rod string to be slowly lowered, and at the moment, the original brake is only used as an auxiliary brake; the gravitational potential energy of the wasted pipe rod string which is originally subjected to heat dissipation through the brake is recovered and stored, and hydraulic oil stored in the energy accumulator group (301) releases work in the next pipe rod lifting operation process, so that the energy saving purpose is achieved; in addition, when the single oil pipe rod of the wellhead is required to be erected so as to be connected with the oil well inner pipe rod string, the work of erecting the pipe rod can be completed by utilizing the recovered energy.
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