CN111997536A - Pulling type net power workover rig and operation method - Google Patents
Pulling type net power workover rig and operation method Download PDFInfo
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- CN111997536A CN111997536A CN202010707901.XA CN202010707901A CN111997536A CN 111997536 A CN111997536 A CN 111997536A CN 202010707901 A CN202010707901 A CN 202010707901A CN 111997536 A CN111997536 A CN 111997536A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims abstract description 58
- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 238000005381 potential energy Methods 0.000 claims abstract description 13
- 230000005611 electricity Effects 0.000 claims abstract description 11
- 239000000872 buffer Substances 0.000 claims abstract description 6
- 230000009194 climbing Effects 0.000 claims abstract description 6
- 230000008439 repair process Effects 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 4
- 230000002452 interceptive effect Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
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- 230000003139 buffering effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/008—Winding units, specially adapted for drilling operations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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Abstract
The invention relates to a pulling type net power workover rig and an operation method in the field of drilling and repairing equipment. The invention comprises a tractor, a trailer, an air compressor unit, a winch motor, an oil pump unit, a derrick system, a winch, a control cabinet, a capacitor cabinet and a protection cabinet. The trailer bears other equipment, can be separated from the tractor and is driven by the storage battery to independently operate; the air compressor unit and the oil pump unit provide air and hydraulic power; a winch motor directly drives a winch to lift and put the pipe column; the super capacitor buffers power fluctuation and recovers the potential energy of the pipe column. When the well repairing power is smaller than the grid power, the super capacitor is charged, otherwise, the grid power is compensated; when the pipe column is lowered, the winch motor rotates reversely to generate electricity, and potential energy is converted into electric energy to be recovered; the transmission system eliminates large components such as a transfer case, a corner case, a climbing chain case and a transmission shaft thereof. The super capacitor and the storage battery are applied to the operation and the transportation of the workover rig, so that the problem of grid power utilization is solved; a pulling type net electric workover rig is provided, and a workover operation method is provided according to different working condition characteristics.
Description
Technical Field
The invention relates to the technical field of drilling equipment, in particular to a pulling type network electric workover rig and an operation method.
Background
In the technical field of well drilling and repairing equipment, a well repairing machine generally adopts a diesel engine and a gearbox combination to provide power, and the power is respectively transmitted to actuating mechanisms such as a winch, a rotary table, a front axle and a rear axle of a main locomotive through a transfer case. The transmission form has low energy conversion rate, large fuel oil consumption, serious noise and waste gas pollution, complex transmission system and high maintenance cost. The well site power grid in China covers all oil extraction areas, the electric workover rig replaces the traditional diesel drive workover rig, but a well site transformer is difficult to give consideration to both workover operation and oil extraction operation power, and the transformer replacement capacity expansion cost is high, so that the electric workover rig mostly adopts a hybrid drive mode at the present stage, namely, an energy storage device, a motor and other equipment are added on the basis of the traditional diesel drive workover rig, so that the cost and the weight of the whole vehicle are greatly improved by the hybrid workover rig, the transmission structure is more complex, and the problem of grid power utilization is solved and becomes a key technology for popularization and application of the electric workover rig. The super capacitor and the storage battery are respectively applied to the operation and the transportation of the workover rig by utilizing the characteristics of the super capacitor and the storage battery, so that the problem of grid power utilization is solved; on the basis, a portable, energy-saving and environment-friendly pulling type net electric workover rig is provided; and provides a network electric workover rig operation method according to the energy use characteristics of different working conditions.
Disclosure of Invention
The invention discloses a pulling type net power workover rig and an operation method in the field of drilling and repairing equipment. The invention comprises a tractor, a trailer, an air compressor unit, a winch motor, an oil pump unit, a derrick system, a winch, a capacitor cabinet, an electric control cabinet and a protection cabinet.
The tractor comprises a storage battery and a traction motor, provides moving power for the system, can be separated from the trailer and is driven by the storage battery to operate independently; the storage battery has high energy density, low power density, long charging and discharging duration and slow absorbed or released power, and is suitable for the moving and transportation of the tractor with gentle power change;
the trailer is used for bearing and fixing other equipment, is provided with a hydraulic support leg and a frame and is pulled by the tractor to move;
the air compressor unit provides air pressure power for an air supply control system and an air control brake;
the liquid pump unit provides hydraulic power for a liquid control system, a hydraulic support leg and a lifting hydraulic cylinder;
the winch motor uses a permanent magnet synchronous motor with low speed and large torque characteristic, can directly drive the winch to lift and put the pipe column, does not need a speed reduction device, and can realize stepless speed regulation;
the winch is directly driven by the permanent magnet motor, a speed reduction device is not arranged, and the transmission efficiency is high;
the derrick system comprises a rear support, a derrick, a lifting hydraulic cylinder and a front support, and is horizontally erected at the upper part of the trailer without interfering with other modules during moving;
a super capacitor and an inverter are installed in the capacitor cabinet; the super capacitor can buffer power fluctuation and recover the potential energy of the pipe column, and the stored electric energy can supplement the power of the grid after being output by the inverter;
the super capacitor has high power density, can release large power in a short time and buffer sudden load power change; the short-time large load energy generated when the pipe column is lowered can be recovered, and the method is suitable for buffering and recovering the energy with large short-period power fluctuation;
a control system and a frequency converter are arranged in the electric control cabinet; well site network power is subjected to frequency conversion by a frequency converter and then supplies power to motors of all equipment;
the protection cabinet is provided with double grounding devices, and well site power grid is connected into the electric control cabinet after passing through the protection cabinet, so that the industrial power grid is completely isolated from the whole set of equipment.
Preferably, the tractor is powered by the storage battery, is directly driven by the traction motor and can be separated from the trailer for operation;
preferably, the network electric workover rig is a pure electric workover rig without the components of a transfer case, a corner case, a rotary table transmission case, a climbing chain case, a transmission shaft and the like of a conventional diesel drive workover rig or a hybrid workover rig, and the transmission structure is greatly simplified;
preferably, the grid power workover rig respectively applies the super capacitor and the storage battery to workover rig operation and movement by utilizing the difference between the power density and the energy density, so that the grid power utilization problem is solved;
preferably, the network power workover rig provides an operation method of the network power workover rig according to the energy use characteristics of different working conditions on the basis of solving the difficult problem of network power utilization;
preferably, under the standby working condition of the grid power workover rig, the grid power charges the storage battery and the super capacitor, so that power is indirectly provided for the transfer and operation; meanwhile, the network power is directly used for providing power for each device after being subjected to frequency conversion by the frequency converter;
preferably, each equipment motor of the grid electric workover rig uses a low-speed high-torque permanent magnet synchronous motor, a speed reducer is not needed, and stepless speed regulation can be realized;
preferably, under the working condition of well workover, when the well workover power is lower than the grid power, the grid power continues to charge the super capacitor; on the contrary, if the power required by heavy load is large when the pipe column is lifted, the super capacitor outputs electric energy through the inverter to compensate the grid power;
preferably, under the working condition of well repair, the network electric workover rig drives the winch motor to reversely rotate to generate electricity when the pipe column is lowered, and the potential energy of the pipe column is converted into electric energy which is recovered and stored in the super capacitor.
The operation method of the pulling type net electric workover rig provided by the embodiment of the invention comprises the following steps:
1. the invention enters the standby working condition after entering the working area, and the network electricity charges the storage battery and the super capacitor through the protection cabinet and the electric control cabinet, thereby indirectly providing power for the transportation and the operation; meanwhile, the grid power is directly used for providing power for each equipment motor after being subjected to frequency conversion by the frequency converter;
2. under the working condition of well repair, when the pipe column is lifted, the winch motor drives the winch roller to lift the pipe column, the power required by heavy load is large, and the super capacitor outputs electric energy through the inverter to compensate the power of the network;
3. under the working condition of well repair, when the operations of shackle, oil pipe discharge and elevator picking and hanging are carried out, the winch motor stops rotating and enters a standby state again, and the grid power continues to rapidly charge the super capacitor;
4. under the working condition of well repair, when the pipe column is lowered for operation, the winch roller rotates reversely to drive the winch motor to rotate reversely to generate electricity, and the potential energy of the pipe column is converted into electric energy which is recovered and stored in the super capacitor;
5. under the working condition of well repair, the air compressor unit and the liquid pump unit are always in a power supply state to provide air pressure and hydraulic power for the whole vehicle; the storage battery of the tractor is in a continuous charging state;
6. the tractor can be separated from the trailer, and the storage battery is driven by the storage battery to carry out independent operation, and the storage battery is in a continuous discharge state in the moving process of the tractor.
The technical scheme of the embodiment of the invention has the following advantages:
1. the invention provides a pulling type net electric workover rig. The tractor can be separated from the trailer and driven by the storage battery to operate independently; the tractor is powered by the storage battery and is directly driven by the traction motor; the invention relates to a network electric workover rig, wherein the moving and operating power is from an industrial power network; the invention is a pure electric workover rig, has no components such as transfer case, corner case, rotary table transmission case, climbing chain case and transmission shaft of the conventional diesel drive workover rig or hybrid workover rig, and the transmission system is greatly simplified; according to the invention, each motor uses a low-speed large-torque permanent magnet synchronous motor, direct drive operation is carried out without a speed reducer, and the transmission efficiency is high. The invention provides a portable, energy-saving and environment-friendly pulling type network power workover rig which applies a super capacitor and a storage battery to the operation and the moving of the workover rig, effectively solves the problem of network power utilization and is beneficial to popularization and application of the network power workover rig.
2. The invention provides a method for operating a pull-type net electric workover rig. Under the standby working condition, the grid power charges the storage battery and the super capacitor, and indirectly provides power for transportation and operation; meanwhile, the network power is directly used for providing power for each device after being subjected to frequency conversion by the frequency converter; under the working condition of well repair, when the well repair power is smaller than the grid power, the grid power continues to charge the super capacitor; when the pipe column is lifted, the power required by heavy load is large, and the super capacitor outputs electric energy through the inverter to compensate the grid power; when the pipe column is lowered for operation, the winch motor is driven to rotate reversely to generate electricity, and the potential energy of the pipe column is converted into electric energy which is recovered and stored in the super capacitor. The invention provides a pulling type net power workover rig operation method according to the power use characteristics under different working conditions, effectively solves the net power utilization problem and is beneficial to popularization and application of the net power workover rig.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a specific example of a trailed type electric network workover rig according to an embodiment 1 of the present invention;
fig. 2 is a flowchart illustrating an exemplary method of operating a trailed grid electric workover rig according to an embodiment 2 of the present disclosure;
fig. 3 is a diagram illustrating a standby condition of an embodiment of a method for operating a trailed grid-powered workover rig according to embodiment 2 of the present invention;
fig. 4 is a diagram of a pipe column lifting condition of a specific example of a method for operating a pull-type network electric workover rig according to embodiment 2 of the present invention;
fig. 5 is a diagram of pipe column lowering operation conditions of a specific example of the operation method of the pull-type network electric workover rig according to embodiment 2 of the present invention.
Reference numerals: 1-a tractor, 11-a storage battery, 12-a traction motor, 2-a trailer, 21-a hydraulic support leg, 22-a frame, 3-an air compressor unit, 4-a winch motor, 5-a liquid pump unit, 6-a derrick system, 61-a rear support, 62-a derrick, 63-a lifting hydraulic cylinder, 64-a front support, 7-a winch, 8-a capacitor cabinet, 81-a super capacitor, 82-an inverter, 9-an electric control cabinet, 91-a control system, 92-a frequency converter and 10-a protection cabinet.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In describing the present invention, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises" and/or "comprising," when used in this specification, are intended to specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; can be mechanically or electrically connected; the two elements can be directly connected, indirectly connected through an intermediate medium, or communicated with each other inside; either a wireless or a wired connection. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The embodiment provides a pulling type net electric workover rig. As shown in fig. 1, the characteristics include: the device comprises a tractor 1, a trailer 2, an air compressor unit 3, a winch motor 4, a liquid pump unit 5, a derrick system 6, a winch 7, a capacitor box 8, an electric control cabinet 9 and a protection cabinet 10.
The tractor 1 comprises a storage battery 11 and a traction motor 12, provides moving power for the system, can be separated from the trailer 2, and is driven by the storage battery 11 to operate independently; the storage battery 11 has high energy density, low power density, long charging and discharging duration and slow absorption and release power, and is suitable for moving and transporting a tractor with gentle power change;
the trailer 2 carries and fixes other equipment, including a hydraulic leg 21 and a frame 22, and is pulled by the tractor 1 to move;
the air compressor unit 3 provides air pressure power for an air supply control system and an air control brake;
the liquid pump unit 5 provides hydraulic power for the hydraulic support legs 21 and the lifting hydraulic cylinder 63;
the winch motor 4 adopts a permanent magnet synchronous motor with low speed and large torque characteristic, can directly drive the winch 7 to lift and put the tubular column, does not need a speed reduction device, and can realize stepless speed regulation;
the winch 7 is directly driven by a permanent magnet motor, a speed reducing device is not needed, and the transmission efficiency is high;
the derrick 62 system comprises a rear bracket 61, a derrick 62, a lifting hydraulic cylinder 63 and a front bracket 64, and is horizontally arranged at the upper part of the trailer 2 during moving without interfering with other modules;
a super capacitor 81 and an inverter 82 are installed in the capacitor box 8; the super capacitor 81 can buffer power fluctuation and recover the potential energy of the pipe column, and the stored electric energy is output through the inverter 82;
the super capacitor 81 has high power density, can release large power in a short time and buffer sudden load power change; meanwhile, the short-time large-load energy generated when the pipe column is lowered can be recovered, and the device is suitable for buffering and recovering the energy with large short-period power fluctuation.
A control system 91 and a frequency converter 92 are arranged in the electric control cabinet 9; the grid power is subjected to frequency conversion by a frequency converter 92 and then supplies power to motors of all equipment;
the protection cabinet 10 is provided with a double grounding device, and well site network power is connected to the electric control cabinet 9 after passing through the protection cabinet 10, so that the industrial power grid is completely isolated from the whole set of equipment.
Preferably, the tractor 1 is powered by the storage battery 11, is directly driven by a traction motor, and can be separated from the trailer 2 to independently work;
preferably, the network electric workover rig is a pure electric workover rig without the components of a transfer case, a corner case, a rotary table transmission case, a climbing chain case, a transmission shaft and the like of a conventional diesel drive workover rig or a hybrid workover rig, and the transmission structure is greatly simplified;
preferably, the grid power workover rig respectively applies the super capacitor and the storage battery to workover rig operation and movement by utilizing the difference between the power density and the energy density, so that the grid power utilization problem is solved;
preferably, the network power workover rig provides an operation method of the network power workover rig according to the energy use characteristics of different working conditions on the basis of solving the difficult problem of network power utilization;
preferably, under the standby working condition of the grid power workover rig, the grid power charges the storage battery 11 and the super capacitor 81, so that power is indirectly provided for the movement and operation; meanwhile, the grid power is subjected to frequency conversion through the frequency converter 82, and power is directly provided for each device;
preferably, each equipment motor of the grid electric workover rig uses a low-speed high-torque permanent magnet synchronous motor, a speed reducer is not needed, and stepless speed regulation can be realized;
preferably, under the well repairing working condition, when the well repairing power is smaller than the grid power, the grid power continues to charge the super capacitor 81; on the contrary, if the power required by heavy load is large during the lifting operation of the tubular column, the super capacitor 81 outputs electric energy to compensate the grid power through the inverter 82;
preferably, under the working condition of well repair, the network electric workover rig drives the winch motor 4 to reversely rotate to generate electricity when the pipe column is lowered, and the potential energy of the pipe column is converted into electric energy which is recovered and stored in the super capacitor 81.
The tractor 1 of the towed net electric workover rig can be separated from the towed vehicle 2 and driven by the storage battery 11 to carry out independent operation; the tractor 1 is powered by a storage battery 11 and is directly driven by a traction motor 12; the invention relates to a network electric workover rig, wherein the moving and operating power is from an industrial power network; the invention is a pure electric workover rig, has no components such as a transfer case, a corner case, a rotary table transmission case, a climbing chain case, a transmission shaft and the like of a conventional diesel drive workover rig or a hybrid workover rig, and a transmission system is very simple; according to the invention, each motor uses a low-speed large-torque permanent magnet synchronous motor, direct drive operation is carried out without a speed reducer, and the transmission efficiency is high. The super capacitor 81 and the storage battery 11 are applied to the operation and the moving of the workover rig, so that the device is light, energy-saving and environment-friendly, effectively solves the grid power utilization problem, and is favorable for popularization and application of the grid power workover rig.
Example 2
The embodiment provides a method for operating a pull-type net electric workover rig, as shown in fig. 2, which is characterized by comprising the following steps:
s1, the vehicle enters a standby working condition after entering a working area, and the network power is used for charging the storage battery 11 and the super capacitor 81 through the protection cabinet 10 and the electric control cabinet 9 so as to indirectly provide power for transportation and operation; the grid power is simultaneously subjected to frequency conversion by a frequency converter 92, and then directly provides power for motors of all equipment (figure 3);
s2, under the working condition of well repair, when the pipe column is lifted, the winch motor 4 drives the winch 7 roller to lift the pipe column, the power required by heavy load is large, and the super capacitor 81 outputs electric energy through the inverter 82 to compensate the grid power (figure 4);
s3, under the working condition of well repair, when the operations of shackle, oil pipe discharge and elevator removal are carried out, the winch motor 4 stops rotating and enters the standby state again, and the grid power continues to rapidly charge the super capacitor 81;
s4, under the working condition of well repair, when the pipe column is lowered for operation, the roller of the winch 7 rotates reversely to drive the winch motor 4 to rotate reversely to generate electricity, and the potential energy of the pipe column is converted into electric energy to be recovered and stored in the super capacitor 81 (shown in figure 5);
s5, under the working condition of well repair, the air compressor unit 3 and the liquid pump unit 5 are always in a power supply state to provide pneumatic power and hydraulic power for the whole vehicle; the battery 11 of the tractor 1 is in a state of continuous charge;
and S6, in the well repairing process of the trailer 2, the tractor 1 can be separated from the trailer, the tractor is driven by the storage battery 11 to perform independent operation, and the storage battery 11 is in a continuous discharging state in the moving process of the tractor 1.
The invention provides a method for operating a pull-type net electric workover rig, which comprises the following steps: under the standby working condition, the grid power charges the storage battery 11 and the super capacitor 81, and indirectly provides power for transportation and operation; meanwhile, the grid power is directly provided with power for each device after being subjected to frequency conversion by the frequency converter 82; under the working condition of well repair, when the well repair power is smaller than the grid power, the grid power continues to charge the super capacitor 81; when the pipe column is lifted, the power required by heavy load is large, and the super capacitor 81 outputs electric energy to compensate the grid power through the inverter 82; when the pipe column is lowered for operation, the winch motor 4 is driven to rotate reversely to generate electricity, and the potential energy of the pipe column is converted into electric energy which is recovered and stored in the super capacitor. The invention provides a pulling type net power workover rig operation method according to the power use characteristics of workover operation under different working conditions, solves the problem of net power utilization, and is beneficial to popularization and application of the net power workover rig.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (8)
1. The utility model provides a pull-type net electricity workover rig which characterized in that includes: the system comprises a tractor (1), a trailer (2), an air compressor unit (3), a winch motor (4), an oil pump unit (5), a derrick system (6), a winch (7), a capacitor cabinet (8), an electric control cabinet (9) and a protection cabinet (10);
the tractor (1) comprises a storage battery (11) and a traction motor (12) and provides moving power for the system, and the tractor (1) can be separated from the trailer (2) and driven by the storage battery (11) to operate independently;
the trailer (2) is used for bearing and fixing other equipment, is provided with a hydraulic leg (21) and a frame (22), and is pulled by the tractor (1) to move;
the air compressor unit (3) provides air pressure power, and an air supply control system and an air control brake are used;
the liquid pump unit (5) provides hydraulic power for the hydraulic support leg (21) and the lifting hydraulic cylinder (63);
the winch motor (4) uses a permanent magnet synchronous motor with low speed and large torque characteristics, can directly drive the winch (7) to lift and put the tubular column, does not need a speed reduction device, and can realize stepless speed regulation;
the winch (7) is directly driven by the winch motor (4), a speed reducing device is not needed, and the transmission efficiency is high;
the derrick system (6) comprises a rear support (61), a derrick (62), a lifting hydraulic cylinder (63) and a front support (64), and is horizontally erected at the upper part of the trailer (2) during moving without interfering with other modules;
a super capacitor (81) and an inverter (82) are installed in the capacitor cabinet (8); the super capacitor (81) can buffer power fluctuation and recover the potential energy of the pipe column, and the stored electric energy can compensate the power of the grid after being output by the inverter (82);
a control system (91) and a frequency converter (92) are arranged in the electric control cabinet (9); the well site network power is directly used for providing power for motors of all equipment after being subjected to frequency conversion by a frequency converter (92);
the protection cabinet (10) is provided with double grounding devices, and well site power grid is connected into the electric control cabinet (9) after passing through the protection cabinet (10), so that the industrial power grid is completely isolated from the whole set of equipment.
2. The trailed net electric workover rig according to claim 1, wherein the tractor (1) can be separated from the trailer (2) and driven by the storage battery (11) to work independently; the tractor (1) is powered by a storage battery (11) and is directly driven by a traction motor (12).
3. The pulling type net electric workover rig according to claim 1 or 2, wherein the net electric workover rig is a pure electric workover rig without components such as a transfer case, a corner case, a rotary table transmission case, a climbing chain case and a transmission shaft thereof of a conventional diesel drive workover rig or a hybrid workover rig, and the transmission structure is greatly simplified.
4. A trailed net power workover rig according to any one of claims 1 to 3, wherein in a standby condition, the net power charges the storage battery (11) and the super capacitor (81) through the protection cabinet (10) and the electric control cabinet (9), thereby indirectly providing power for transportation and operation.
5. The pulling type net power workover rig according to any one of claims 1 to 4, wherein the net power is directly used for powering each equipment motor after being subjected to frequency conversion by a frequency converter (92); the motors of all the devices are low-speed and high-torque permanent magnet synchronous motors, speed reducers are not needed, and stepless speed regulation can be realized.
6. The pull-type net power workover rig according to any one of claims 1 to 5, wherein under the workover condition, when the workover power is less than the net power, the net power continues to charge the super capacitor (81); on the contrary, the super capacitor (81) outputs electric energy to compensate the grid power through the inverter (82).
7. The pull-type net electric workover rig according to any one of claims 1 to 6, wherein under the workover condition, the winch motor (4) is driven to rotate reversely to generate electricity when the pipe column is lowered, and the pipe column potential energy is converted into electric energy which is recovered and stored in the super capacitor (81).
8. A method for operating a pull-type net electric workover rig is characterized by comprising the following steps:
the invention enters a standby working condition after entering a working area, and the network power charges a storage battery (11) and a super capacitor (81) through a protection cabinet (10) and an electric control cabinet (9), thereby indirectly providing power for transportation and operation; the grid power is simultaneously subjected to frequency conversion by a frequency converter (92) and then directly provides power for each equipment motor;
under the working condition of well repair, when the pipe column is lifted, the winch motor (4) drives the roller of the winch (7) to lift the pipe column, the power required by heavy load is large, and the grid power and the super capacitor (81) supply energy to the winch motor (4) at the same time;
under the working condition of well repair, when the operations of shackle, oil pipe discharge and elevator picking and hanging are carried out, the winch motor (4) stops rotating and enters a standby state again, and the grid power continues to rapidly charge the super capacitor (81);
under the working condition of well repair, when the pipe column is lowered for operation, the roller of the winch (7) rotates reversely to drive the winch motor (4) to rotate reversely to generate electricity, and the potential energy of the pipe column is converted into electric energy which is recovered and stored in the super capacitor (81);
under the working condition of well repair, the air compressor unit (3) and the liquid pump unit (5) are always in a power supply state to provide pneumatic power and hydraulic power for the whole vehicle; the storage battery (11) of the tractor (1) is in a continuous charging state;
the tractor (1) can be separated from the trailer (2), the storage battery (11) is used for driving the independent operation, and the storage battery (11) is in a continuous discharge state when the tractor (1) is moved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010707901.XA CN111997536A (en) | 2020-07-22 | 2020-07-22 | Pulling type net power workover rig and operation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010707901.XA CN111997536A (en) | 2020-07-22 | 2020-07-22 | Pulling type net power workover rig and operation method |
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| Publication Number | Publication Date |
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| CN111997536A true CN111997536A (en) | 2020-11-27 |
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| CN202010707901.XA Pending CN111997536A (en) | 2020-07-22 | 2020-07-22 | Pulling type net power workover rig and operation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006690A (en) * | 2021-04-19 | 2021-06-22 | 高邮浩翔石油机械有限公司 | Hydraulic energy storage vehicle-mounted drilling and repairing machine with emergency and power compensation functions |
| CN113073948A (en) * | 2021-04-27 | 2021-07-06 | 中石化四机石油机械有限公司 | Grid-driven automatic workover rig |
| US11955782B1 (en) | 2022-11-01 | 2024-04-09 | Typhon Technology Solutions (U.S.), Llc | System and method for fracturing of underground formations using electric grid power |
-
2020
- 2020-07-22 CN CN202010707901.XA patent/CN111997536A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006690A (en) * | 2021-04-19 | 2021-06-22 | 高邮浩翔石油机械有限公司 | Hydraulic energy storage vehicle-mounted drilling and repairing machine with emergency and power compensation functions |
| CN113073948A (en) * | 2021-04-27 | 2021-07-06 | 中石化四机石油机械有限公司 | Grid-driven automatic workover rig |
| CN113073948B (en) * | 2021-04-27 | 2022-06-17 | 中石化四机石油机械有限公司 | Grid-driven automatic workover rig |
| US11955782B1 (en) | 2022-11-01 | 2024-04-09 | Typhon Technology Solutions (U.S.), Llc | System and method for fracturing of underground formations using electric grid power |
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