CN105523493B - A kind of power back-off formula workover rig power drive system - Google Patents
A kind of power back-off formula workover rig power drive system Download PDFInfo
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- CN105523493B CN105523493B CN201610130889.4A CN201610130889A CN105523493B CN 105523493 B CN105523493 B CN 105523493B CN 201610130889 A CN201610130889 A CN 201610130889A CN 105523493 B CN105523493 B CN 105523493B
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- electromagnetic switch
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/08—Driving gear incorporating fluid motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/12—Driving gear incorporating electric motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/14—Power transmissions between power sources and drums or barrels
- B66D1/22—Planetary or differential gearings, i.e. with planet gears having movable axes of rotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses the power back-off formula well workover mechanomotive force and transmission system of a kind of application flywheel-type hydraulic accumulator, belong to workover rig power drive system field, the present invention includes dynamical system and transmission system two large divisions, described dynamical system can be divided into power system and energy-storage system again, wherein power system is netted electricity, variable-speed motor by well site and constituted, energy-storage system is made up of hydraulic oil container, variable pump motor, high-speed joint, flywheel-type hydraulic accumulator, clutch, overflow valve, electromagnetic switch valve, and transmission system is made up of coupler, decelerator, winch.Well site net electric drive variable-speed motor output power, is that the flywheel-type hydraulic accumulator in energy-storage system fills energy, or energy supply in conjunction via coupler, increases through decelerator reduction of speed after turning round, driving winch work.The energy of dynamical system comes from well site net electricity in the present invention, wherein energy-storage system is used as energy storage device using flywheel-type hydraulic accumulator, it compensate for the deficiency of net electrical power, and can be according to demand torque and the magnitude relationship of workover rig power drive system output torque, carry out model selection, time to recharge is shortened, capacity usage ratio is further increased.
Description
Technical field
The invention mainly relates to power back-off formula workover rig power drive system field, more particularly to using flywheel-type hydraulic pressure
The power back-off formula well workover mechanomotive force and transmission system of accumulator.
Background technology
Workover rig is the OFME maintained to pipe string of oil field downhole or well body, to realize energy-saving ring
Guarantor, new workover rig dynamical system is netted electricity substitution Diesel engine using well site and energized, but most oil field place power network at present
Power significantly limit workover rig work capacity in 30kW -50kW or so.To solve this problem, often addition storage in systems
Energy equipment is used in combination with well site net electricity, and when workover rig, which is in, unloads the pipe maintenance stage, power demand is smaller, energy storage device energy storage；When
When workover rig is in the tube drawing stage, power demand is larger, and net electricity provides energy jointly with energy storage device, realizes the power to net electricity
Compensation, improves workover rig working power.
In existing energy storage device, hydraulic accumulator has the advantages that power density is big, energy density is high, but it can not be carried
For constant pressure；Flywheel is functional, but its charge and discharge energy cycle and workover rig working condition matching are poor, and both of which is difficult to list
Solely used as workover rig energy storage device.The flywheel-type hydraulic accumulator of developed recently is by traditional flywheel and hydraulic accumulator
It is combined, using rotatable tubular hydraulic accumulator structure, realizes kinetic energy and hydraulic energy biform energy storage, further increase
Energy density and power density, and exportable constant pressure, are matched well with workover rig working condition, if being set as energy storage
It is standby to apply in well workover mechanomotive force system, workover rig power back-off can be achieved, its work capacity is improved.
The content of the invention
It is an object of the invention to provide a kind of power back-off formula workover rig power transmission of application flywheel-type hydraulic accumulator
System.
The technical scheme is that well site is netted, electricity is in parallel with flywheel-type hydraulic accumulator as power source, and substitution original is repaiied
The Diesel engine or mobile generator of well machine, while according to demand power and the size of demand torque, judging dynamical system
Dynamic mode, and power drive system is controlled according to corresponding dynamic mode, energized.
The present invention is made up of dynamical system and transmission system two parts, and wherein dynamical system includes power system and energy storage system
System.Described power system includes well site net electricity, variable-speed motor, and wherein well site net electricity, as power source, is well workover machine operation
Power is provided；Described energy-storage system includes variable pump-motor, solenoid directional control valve, overflow valve, clutch, high-speed joint
With flywheel-type hydraulic accumulator, wherein flywheel-type hydraulic accumulator is as energy storage device, and the electric energy that well site can be netted into electricity is converted into
Kinetic energy, hydraulic energy or kinetic energy are combined hydraulic energy and stored；Described transmission system includes coupler, decelerator and winch, its
Middle coupler is made up of driving gear set, single planetary gear, lock device and clutch, and dynamical system can pass through single planet tooth
Wheel realizes power coupling, and decelerator can realize that reduction of speed increases torsion, and the job requirements range of speeds is matched.
The typical operation operating mode of workover rig has the feature of loop cycle, and gradually mitigates with the weight of well casing, operation
Demand power and demand torque constantly reduce.To shorten time to recharge, capacity usage ratio is improved, according to demand torque and workover rig
Magnitude relationship, the energy stores of flywheel-type hydraulic accumulator and the type of service of power drive system output torque, by dynamical system
The residing mode division of system is dynamic mode and fills energy pattern.Wherein dynamic mode includes：The independent powered mode of well site net electricity is (referred to as
Net electronic force mode), well site net electricity combine powered mode (abbreviation flywheel hydraulic power pattern), well with flywheel-type hydraulic accumulator
Field net electricity combines three kinds of powered mode (abbreviation hydraulic power pattern) with hydraulic accumulator, because flywheel is separately as energy storage device
When it is poor with the matching of workover rig typical operation operating mode, so not using flywheel separately as energy storage device；Filling can pattern bag
Include：Zero fill can pattern, hydraulic pressure fill can pattern and flywheel hydraulic pressure fill can pattern, and corresponded with dynamic mode.
Compared with prior art, beneficial effects of the present invention are：
1. workover rig power drive system and driving system are split, the energy of dynamical system nets electricity both from well site,
High-efficiency environment friendly；
2. using flywheel-type hydraulic accumulator as energy storage device, double-energy storage mode improves energy storage density, reduce energy storage
The volume of equipment, makes up the deficiency of net electrical power, while two kinds of energy interactions, can be achieved charge and discharge energy power maximum；
3. according to demand torque and the magnitude relationship of workover rig power drive system output torque, by the power of dynamical system
Mode division can improve capacity usage ratio, shortening is filled to net electronic force mode, hydraulic power pattern and flywheel hydraulic power pattern
Can the time；
4. realizing the power coupling of power system and energy-storage system using new coupler, three kinds of dynamic modes are easy to implement
And the switching filled between energy pattern.
Brief description of the drawings
Fig. 1 is power transmission system structure sketch of the invention；
Fig. 2 is dynamical system model selection flow chart of the invention；
Fig. 3 can model selection flow chart for filling for the present invention；
Fig. 4 is net electric power ideograph of the invention；
Fig. 5 is hydraulic power ideograph of the invention；
Fig. 6 is flywheel hydraulic power ideograph of the invention；
Fig. 7 fills for the hydraulic pressure of the present invention can ideograph；
Fig. 8 fills for the flywheel hydraulic pressure of the present invention can ideograph；
Wherein, 1-well site net electricity；2-variable-speed motor；3-coupler, 31-electric power input gear, 32-planet carrier,
33-sun gear, 34-external toothing, 35-lock device, 36-clutch；4-hydraulic oil container；5-variable pump-motor；6-high
Fast swivel joint；7-flywheel-type hydraulic accumulator；8-clutch；9-variable pump-motor；10-overflow valve；11-the first electricity
Magnetic switch valve；12-the second electromagnetic switch valve；13-the three electromagnetic switch valve；14-decelerator；15-winch.
In Fig. 1, I-dynamical system, II-transmission system, A-power system, B-energy-storage system, --- connect for circuit
Connect ,-to mechanically connect, ----it is hydraulic connecting；T in Fig. 2mThe torque of-job requirements, Te- power system is after transmission system
Rated output torque (torque of abbreviation electric power output), T1- energy-storage system only with during hydraulic energy mode accumulation of energy after transmission system
Rated output torque (abbreviation hydraulic pressure output torque)；In Fig. 4-8, overstriking represents in running order.
Specific embodiment
Referring to Fig. 1, in power system A, well site net electricity 1 is inputted power by circuit connection driving variable-speed motor 2；
In transmission system II, the electric power input gear 31 of coupler 3 is connected with planet carrier 32, and external toothing 34 is through clutch 36 and decelerator
14 are connected, and sun gear 33 is connected through lock device 35 with variable pump-motor 5, realize and fill energy or integral power system to energy-storage system B
The joint energy supply of system I；In energy-storage system B, variable pump-motor 5 is through the first electromagnetic switch valve 11, the 3rd electromagnetic switch valve 13 with becoming
Measure pump-motor 9 to be connected, variable pump-motor 9 realizes that mechanical path is connected through clutch 8 with flywheel-type hydraulic accumulator 7, flywheel
The other end of formula hydraulic accumulator 7 after high-speed joint 6, the second electromagnetic switch valve 12, the 3rd electromagnetic switch valve 13 with variable
Pump-motor 5 is connected, and realizes hydraulic connecting, and overflow valve 10 ensures energy-storage system safety.
Referring to Fig. 2, when workover rig is started working and is in tube drawing state, detection demand torque Tm, and and electric power output
Torque TeWith hydraulic pressure output torque T1Value compare, according to result select dynamical system I dynamic mode：
Referring to Fig. 4, as demand torque TmLess than electric power output torque TeWhen, the electronic force mode of selection net, i.e. power system A
Individually energy supply, now energy-storage system B is in packing state, wherein the first electromagnetic switch valve 11, the second electromagnetic switch valve the 12, the 3rd
Electromagnetic switch valve 13 disconnects, and clutch 8 disconnects；The locking of lock device 35 in transmission system II, the rotating speed of sun gear 33 is zero, clutch
Device 36 is engaged, and power system A exports power via electric power input gear 31, planet carrier 32 and external toothing 34, is transferred to decelerator
14, drive winch 15 to work.
Referring to Fig. 5, as demand torque TmMore than electric power output torque Te, but less than electric power output torque TeExported with hydraulic pressure
Torque T1During sum, the flywheel-type hydraulic accumulator 7 in selection hydraulic power pattern, i.e. energy-storage system B is only hydraulically supplied
Can, now the first electromagnetic switch valve 11 is disconnected in energy-storage system B, and the second electromagnetic switch valve 12, the 3rd electromagnetic switch valve 13 are connected,
Clutch 8 disconnects, the hydraulic energy driving variable pump-motor 5 stored in flywheel-type hydraulic accumulator 7, hydraulic energy is converted to dynamic
Energy；Lock device 35 is disconnected in transmission system II, and clutch 36 is engaged, and energy-storage system B power is inputted via sun gear 33, power train
System A power is inputted via electric power input gear 31, planet carrier 32, common driving external toothing 34, is increased through the reduction of speed of decelerator 14 after turning round,
Drive winch work.
Referring to Fig. 6, as demand torque TmMore than electric power output torque TeWith hydraulic pressure output torque T1During sum, flywheel is selected
Hydraulic power pattern, now the first electromagnetic switch valve 11, the second electromagnetic switch valve 12, the 3rd electromagnetic switch valve in energy-storage system B
13 connections, clutch 8 is engaged, and the kinetic energy stored in flywheel-type hydraulic accumulator 7 drives variable pump-motor 9 with variable pump state
Work, converts kinetic energy into hydraulic energy, and behind the hydraulic energy interflow of its own storage, driving variable pump-motor 5 is with variable displacement motor
State output kinetic energy；Lock device 35 is disconnected in transmission system II, and clutch 36 is engaged, and power system A power is inputted via electric power
Gear 31, planet carrier 32 are inputted, and energy-storage system B power is inputted via sun gear 33, are realized by coupler 3 after power coupling,
Common driving external toothing 34, increases through the reduction of speed of decelerator 14 and turns round, and drives winch work.
Referring to Fig. 3, when in unload pipe service mode when, first determine whether the dynamic mode residing for workover rig during the same cycle, and
Energy pattern is filled in selection accordingly：
When workover rig is in the cycle nets electronic force mode, it is not energy storage system that energy pattern, i.e. power system A are filled in selection zero
System B fills energy, now the locking of lock device 35, and clutch 36 disconnects, the first electromagnetic switch valve 11, the second electromagnetic switch valve the 12, the 3rd
Electromagnetic switch valve 13 is off, and clutch 8 disconnects, at dynamical system I is unpowered output, flywheel-type hydraulic accumulator 7
In packing state.
Referring to Fig. 7, when workover rig is in hydraulic power pattern with the cycle, selection hydraulic pressure fills energy pattern, now power train
Lock device 35 is disconnected in system II, and clutch 36 is engaged, because winch 15 is in braking state, so the rotating speed of external toothing 36 is zero,
After power system A power is via electric power input gear 31, planet carrier 32, sun gear 33 is driven；The first electromagnetism is opened in energy-storage system B
Close valve 11 to disconnect, the second electromagnetic switch valve 12, the 3rd electromagnetic switch valve 13 are connected, and clutch 8 disconnects, variable pump-motor 5 is with change
Pump operation is measured, is that flywheel-type hydraulic accumulator 7 is filled with hydraulic energy.
Referring to Fig. 8, when workover rig is in flywheel hydraulic power pattern with the cycle, selection flywheel hydraulic pressure fills energy pattern, this
When transmission system II in lock device 35 disconnect, clutch 36 is engaged, and power system A power is via electric power input gear 31, planet
After frame 32, sun gear 33 is driven；First electromagnetic switch valve 11, the second electromagnetic switch valve 12, the 3rd electromagnetic switch in energy-storage system B
Valve 13 is connected, and clutch 8 is engaged, and variable pump-motor 5, with variable pump operation, is that flywheel-type hydraulic accumulator 7 is filled with hydraulic pressure
Can, it is that flywheel-type hydraulic accumulator 7 is filled with kinetic energy while driving variable pump-motor 9 with variable displacement motor operation.
When workover rig stops operation, power system A is out of service, and energy-storage system B stops energy conversion, now lock device
35 lockings, clutch 36 disconnects, and the first electromagnetic switch valve 11, the second electromagnetic switch valve 12, the 3rd electromagnetic switch valve 13 are in disconnected
Open state, clutch 8 disconnects, output that dynamical system I is unpowered, and flywheel-type hydraulic accumulator 7 is in packing state.
Claims (6)
1. a kind of power back-off formula electric workover rig power drive system, is made up of dynamical system I and transmission system II, wherein dynamic
Force system I includes power system (A) and energy-storage system (B), and power system (A) includes well site net electric (1) and variable-speed motor
(2), energy-storage system (B) includes hydraulic oil container (4), variable pump-motor (5), high-speed joint (6), flywheel-type hydraulic energy-accumulating
Device (7), clutch (8), variable pump-motor (9), overflow valve (10) and the first electromagnetic switch valve (11), the second electromagnetic switch valve
(12), the 3rd electromagnetic switch valve (13), transmission system II includes coupler (3), decelerator (14) and winch (15)；Its feature exists
In：Using flywheel-type hydraulic accumulator (7) as energy storage device in energy-storage system (B), dynamical system I can be drawn according to working condition
It is divided into dynamic mode and fills coupler (3) in energy pattern, transmission system II and power coupling is realized using single planetary gear.
2. a kind of power back-off formula electric workover rig power drive system according to claim 1, it is characterised in that：Institute
The energy-storage system (B) stated, using flywheel-type hydraulic accumulator (7) as energy storage device, hydraulic accumulator is combined equivalent to flywheel,
Kinetic energy, hydraulic energy and kinetic energy can be stored and be combined hydraulic energy, and according to the corresponding energy storage of different choice of dynamical system pattern, exoergic
Mode.
3. a kind of power back-off formula electric workover rig power drive system according to claim 1, it is characterised in that：Institute
The coupler (3) of transmission system II is stated by electric power input gear (31), single planetary gear, lock device (35) and clutch (36) group
Into, wherein, electric power input gear (31) is connected with planet carrier (32), and sun gear (33) is through lock device (35) and variable pump-motor
(5) it is connected, external toothing (34) is connected through clutch (36) with decelerator (14), driving winch (15) work.
4. a kind of power back-off formula electric workover rig power drive system according to claim 1, it is characterised in that：It is dynamic
Force system pattern is：
First by detecting working condition, if in tube drawing state, selecting dynamic mode, then turned by comparisons demand
Square Tm, electric power output torque Te, hydraulic pressure output torque T1Size, the dynamic mode of dynamical system I is divided：Work as demand
Torque TmLess than electric power output torque TeWhen, the electronic force mode of selection net；As demand torque TmMore than electric power output torque Te, but
Less than electric power output torque TeWith hydraulic pressure output torque T1During sum, hydraulic power pattern is selected；As demand torque TmMore than electric power
Output torque TeWith hydraulic pressure output torque T1During sum, flywheel hydraulic power pattern is selected；When in unload pipe service mode when, sentence
Break with the dynamic mode selected in the cycle, select zero to fill energy pattern, hydraulic pressure respectively according to above-mentioned dynamic mode order and fill energy pattern
Being filled with flywheel hydraulic pressure can pattern.
5. a kind of power back-off formula electric workover rig power drive system according to claim 4, it is characterised in that：It is dynamic
Force mode is：
Net power system (A) under electronic force mode individually to energize, now energy-storage system (B) is in packing state, wherein the first electricity
Magnetic switch valve (11), the second electromagnetic switch valve (12), the 3rd electromagnetic switch valve (13) disconnect, and clutch (8) disconnects, power train
Lock device (35) locking in system II, sun gear (33) rotating speed is zero, clutch (36) engagement, power system (A) output power warp
By electric power input gear (31), planet carrier (32) and external toothing (34), decelerator (14) is transferred to, winch (15) work is driven；
Flywheel-type hydraulic accumulator (7) only hydraulically energy storage under hydraulic power pattern in energy-storage system (B), now energy storage
The first electromagnetic switch valve (11) disconnects in system (B), the second electromagnetic switch valve (12), the connection of the 3rd electromagnetic switch valve (13), from
Clutch (8) disconnects, the hydraulic energy driving variable pump-motor (5) of storage in flywheel-type hydraulic accumulator (7), in transmission system II
Lock device (35) disconnects, clutch (36) engagement, and power system (A) power is via electric power input gear (31), planet carrier (32)
Input, energy-storage system (B) power is inputted via sun gear (33), and external toothing (34) is driven jointly, is increased through decelerator (14) reduction of speed
After torsion, winch (15) work is driven；
First electromagnetic switch valve (11), the second electromagnetic switch valve (12), the 3rd in energy-storage system (B) under flywheel hydraulic power pattern
Electromagnetic switch valve (13) is connected, clutch (8) engagement, kinetic energy driving variable pump-horse of storage in flywheel-type hydraulic accumulator (7)
Up to (9) with variable pump operation, hydraulic energy is converted kinetic energy into, behind the hydraulic energy interflow of its own storage, variable is driven
Pump-motor (5) is with variable displacement motor state output kinetic energy, and lock device (35) disconnects in transmission system II, clutch (36) engagement, electricity
Force system (A) power is inputted via electric power input gear (31), planet carrier (32), and energy-storage system (B) power is via sun gear
(33) input, realized by coupler (3) after power coupling, external toothing (34) is driven jointly, increase through decelerator (14) reduction of speed and turn round,
Drive winch (15) work.
6. a kind of power back-off formula electric workover rig power drive system according to claim 4, it is characterised in that：Its
It is characterised by：Filling energy pattern is：
Zero fills power system (A) under energy pattern does not fill energy for energy-storage system (B), now lock device (35) locking, clutch (36)
Disconnect, the first electromagnetic switch valve (11), the second electromagnetic switch valve (12), the 3rd electromagnetic switch valve (13) are off, from
Clutch (8) disconnects, output that dynamical system I is unpowered, and flywheel-type hydraulic accumulator (7) is in packing state；
Hydraulic pressure, which fills, power system (A) to be that energy-storage system (B) is filled with lock device (35) in hydraulic energy, transmission system II and broken under pattern
Open, clutch (36) engagement, power system (A) power is inputted via electric power input gear (31), planet carrier (32), drives the sun
Take turns (33), the first electromagnetic switch valve (11) disconnects in energy-storage system (B), the second electromagnetic switch valve (12), the 3rd electromagnetic switch valve
(13) connect, clutch (8) disconnects, and variable pump-motor (5) is with variable pump operation；
It is that energy-storage system (B) is filled with lock in hydraulic energy and kinetic energy, transmission system II that flywheel hydraulic pressure, which fills power system (A) under energy pattern,
Only device (35) disconnects, and clutch (36) engagement, power system (A) power is defeated via electric power input gear (31), planet carrier (32)
Enter, driving sun gear (33), the first electromagnetic switch valve (11), the second electromagnetic switch valve (12), the 3rd electromagnetism in energy-storage system (B)
Switch valve (13) is connected, clutch (8) engagement, and variable pump-motor (5), with variable pump operation, is flywheel-type hydraulic energy-accumulating
Device (7) is filled with hydraulic energy, is flywheel-type hydraulic accumulator while driving variable pump-motor (9) with variable displacement motor operation
(7) it is filled with kinetic energy.
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| CN201610130889.4A CN105523493B (en) | 2016-03-08 | 2016-03-08 | A kind of power back-off formula workover rig power drive system |
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| CN109422204B (en) * | 2017-09-01 | 2020-08-14 | 上海中车艾森迪海洋装备有限公司 | Laying and recycling system for offshore operation |
| CN107986179A (en) * | 2017-11-28 | 2018-05-04 | 中国海洋石油集团有限公司 | The heave compensator of operation on the sea crane |
| CN113896127B (en) * | 2021-12-13 | 2022-02-18 | 胜利油田利丰石油设备制造有限公司 | Energy storage 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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