WO2021146837A1

WO2021146837A1 - Energy-storage workover rig

Info

Publication number: WO2021146837A1
Application number: PCT/CN2020/073218
Authority: WO
Inventors: 朱建建; 蔡意; 宋卫东; 郑兴远; 陈军国; 王鑫; 崔树桢; 黄振; 刘士堂; 李守哲; 李恩杰
Original assignee: 烟台杰瑞石油装备技术有限公司
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2021-07-29

Abstract

Provided is an energy-storage workover rig, comprising a battery module (4), wherein workover operation and chassis traveling of the energy-storage workover rig are both powered by the battery module (4). The workover rig is powered by a battery with a large-power charge and discharge function, thus solving the problem of insufficient electric power supply in a well site, satisfying the large power running requirements during operation, and improving the operation efficiency. The battery module is charged while performing discharge, such that lowering potential energy during the workover operation and kinetic energy during traveling are converted into electric energy stored in the battery module, and the electric energy provides required power for the workover operation and chassis traveling of the workover rig, thereby making the workover rig purely electric, and overcoming the key technical problem in the prior art of only on-platform operation being electric or only traveling being electric.

Description

Energy storage workover rig

Technical field

The invention relates to the technical field of workover rigs, in particular to an energy storage workover rig.

Background technique

Workover rigs are specialized mechanical equipment for repairing downhole tubing strings or wellbore in oil fields. They are mainly used for lifting and lowering oil pipes, sucker rods and pumps. At present, diesel engines are the main source of power for workover rigs, providing power for the travel and operation of workover rigs. However, the combustion of diesel will produce a large amount of harmful gases and cause environmental pollution, which neither meets the national energy conservation and emission reduction policy, nor meets the requirements of environmental protection. Diesel engines only convert 30% of the heat energy produced by diesel combustion into mechanical energy, resulting in low efficiency of diesel workover rigs. The diesel engine has a high failure rate and low power utilization. The diesel engine is in no-load operation about 66% of the time during workover operations.

During the workover process, the lifting and lowering of the pipe string is a typical intermittent cycle operation. When the pipe string is lifted, the engine has high power output, and the engine is in low load or no-load operation during auxiliary operations such as unloading and removing the elevator. In order to meet the requirements of maximum hook load and hook speed, traditional workover rigs need to be equipped with a larger power engine, which causes a large waste of power. The maximum power demand is mainly reflected in the oil pipe lifting conditions, and a complete lifting process, the lifting time only accounts for 1/4 to 1/3 of the entire operation cycle, the rest of the time load is small, and the descending needs to overcome the gravity of the hook, and the system is negative power.

The workover rig has a short operating cycle and frequent relocation. If the high-voltage power grid is used to obtain electricity, it needs to be approved by the electric power department. It is limited by factors such as "long high-voltage power grid operation approval time and power hazard", which limits the flexibility of the electric drive workover rig . If the low-voltage end of the pumping unit transformer is used to obtain electricity, the power of the pumping unit transformer is less than the power of the drawworks motor, which cannot meet the power requirements such as hook load and hook speed required for large workover rig operations. Most oil wells use transformers with a capacity of 50～80kVA.

Based on the existence of the above-mentioned various problems, a new workover rig is urgently needed.

Summary of the invention

The purpose of the present invention overcomes the shortcomings of the prior art and provides an energy storage workover rig, which converts the potential energy of the workover operation and the kinetic energy during walking into the energy stored in the battery module through the charging and discharging of the battery module. Electric energy provides the required power for the workover operation and chassis travel of the workover rig, realizing the pure electric operation of the workover rig, and overcoming the key technical problems of single electric operation or walking single electric operation in the prior art.

The purpose of the present invention is achieved through the following technical measures: an energy storage workover rig, the energy storage workover rig includes a battery module, and the workover operation and chassis travel of the energy storage workover rig are powered by the battery module .

Further, the energy storage workover rig can use the potential energy released during the workover operation to charge the battery module and the kinetic energy of the energy storage workover rig during walking to charge the battery module.

Further, the energy storage workover rig includes a derrick, a chassis, a charging and discharging socket cabinet, an on-board charging cabinet, a control cabinet, an electric air compressor, a motor drive system, a second deck, a drawworks, a driller’s console, a transmission system, Electric steering pump, main driving motor, electric main oil pump, electric air conditioning system, the mast, charging and discharging socket cabinet, on-board charging cabinet, control cabinet, electric air compressor, motor drive system, second deck, drawworks, driller control The platform, transmission system, electric steering pump, main drive motor, electric main oil pump and electric air conditioning system are integrated on the chassis.

Further, the center of the main drive motor coincides with the center of the chassis frame beam.

Further, the charging and discharging socket cabinet is arranged on a side behind the cab of the chassis.

Further, the battery module is arranged on one end of the chassis frame beam close to the driver's cab.

Further, the on-board charging cabinet is arranged adjacent to the battery module, and the control cabinet is arranged adjacent to the battery module.

Further, the motor drive system is arranged on the side of the frame of the chassis frame.

Further, the derrick is a nested derrick.

Further, the driller's console is arranged at the rear of the chassis, and the driller's console is arranged on the Y-shaped legs of the nested derrick.

Further, the height of the nested derrick is 22 meters or more.

Further, the winch is more than 350 horsepower.

Further, the energy storage workover rig is a dual standpipe drilling tool, which is arranged on a two-story platform.

Further, a household electrical cabinet is integrated on the chassis, one end of the household electrical cabinet is connected with a battery module, and the other end of the household electrical cabinet is connected with a charging and discharging socket cabinet.

Further, the energy storage workover rig includes a discharge resistance cabinet arranged on the side of the chassis frame frame, and the discharge resistance cabinet is used to protect the battery module from overcharging.

Further, the energy storage workover rig includes a mechanical interlocking device, and the main drive motor is switched on the transmission system by the mechanical interlocking device to realize the workover operation of the energy storage workover rig and the switching and interlocking of driving conditions .

Further, the energy storage workover rig includes an electrical interlocking device. The operation of the chassis cab and the operation of the driller's console are separately set up with separate control programs. The control cabinet controls the operation of the chassis cab and the driver through the electrical interlocking device. Operation switching and interlocking of the drill console.

Further, the electrical interlocking device is a proximity switch.

Further, the control cabinet is equipped with remote monitoring, which can remotely transmit and store the operating parameters of the entire energy storage workover rig.

Further, the battery module voltage range: 400V～800V, charging and discharging power is not less than 315KW, power is not less than 140KWh, application environment temperature is -20℃～+45℃, discharge current is not less than 400A, supporting charging while In discharge mode, the charging power is not less than 50KW.

Compared with the prior art, the beneficial effect of the present invention is: an energy storage workover rig, through the charging and discharging of the battery module, the potential energy of the workover operation and the kinetic energy of walking are converted into the storage of the battery module The electric energy in the electric energy provides the necessary power for the workover operation and chassis travel of the workover rig, which realizes the pure electric operation of the workover rig, and overcomes the key technical problems of single electric operation or walking single electric operation in the prior art. . The overall selection of the battery module escorts pure electric power in two modes of workover operation and walking mode. The layout of the functional components on the frame of the chassis frame is rationalized and the structure is compact. The height of the nested derrick and the horsepower of the drawworks realize the large-tonnage hook load of the energy storage workover rig. The dual standpipe drilling tool and the sleeved derrick realize the double standpipe operation of the energy storage workover rig and improve the working efficiency of the pure electric energy storage workover rig. The addition of electrical cabinets for daily use solves many problems in life at the well site. The discharge resistance cabinet protects the battery module from damage due to overcharging. Mechanical interlocking and electrical interlocking enable flexible switching of multiple operation modes and realize the convenience of operation of the energy storage workover rig.

The present invention will be described in detail below with reference to the drawings and specific embodiments.

Description of the drawings

Figure 1 is a schematic diagram of the structure of an energy storage workover rig.

Figure 2 is a schematic diagram of the other side of the energy storage workover rig.

Among them, 1. nested mast, 2. chassis, 3. charging and discharging socket cabinet, 4. battery module, 5. on-board charging cabinet, 6. control cabinet, 7. electric air compressor, 8. motor drive system, 9. Electric cabinet for daily use, 10. Two-layer platform, 11. Drawworks, 12. Driller console, 13. Discharge resistance cabinet, 14. Transmission system, 15. Electric steering pump, 16. Main drive motor, 17. Electric main oil pump , 18. Electric air conditioning system.

Detailed ways

As shown in FIGS. 1 to 2, an energy storage workover rig includes a battery module 4, and the workover operation and chassis travel of the energy storage workover rig are powered by the battery module 4. The energy storage workover rig can use the potential energy released during the workover operation to charge the battery module 4 and the kinetic energy of the energy storage workover rig during walking to charge the battery module 4. The battery module voltage range: 400V～800V, the charge and discharge power is not less than 315KW, the power is not less than 140KWh, the application environment temperature is -20℃～+45℃, the discharge current is not less than 400A, and it supports charging and discharging mode. The charging power is not less than 50KW. Through the charging and discharging of the battery module, the potential energy and the kinetic energy during the workover operation are converted into the electric energy stored in the battery module. The electric energy provides the required power for the workover operation of the workover rig and the traveling of the chassis. The pure electric operation of the workover rig overcomes the key technical problems of single electric operation or walking single electric operation in the prior art. The low temperature resistance of the battery module 4 can well meet the application of the energy storage workover rig in a low temperature environment. As the mining environment is getting worse and worse, the low temperature environment is one of the common conditions. Therefore, the adaptation of the electric energy storage workover rig to the low temperature environment is also a very important link. The selection of output power can meet the electricity demand for workover operations and walking conditions. The large capacity can ensure that the charging capacity is sufficient to match the electricity consumption. The overall selection of the battery module 4 is pure electric escort for two modes of workover operation and walking mode.

The energy storage workover rig includes a derrick, a chassis 2, a charging and discharging socket cabinet 3, a vehicle charging cabinet 5, a control cabinet 6, an electric air compressor 7, a motor drive system 8, a second deck 10, a drawworks 11, and driller control Station 12, transmission system 14, electric steering pump 15, main drive motor 16, electric main oil pump 17, electric air conditioning system 18, the mast, charging and discharging socket cabinet 3, on-board charging cabinet 5, control cabinet 6, electric air compressor 7. The motor drive system 8, the second deck 10, the drawworks 11, the driller console 12, the transmission system 14, the electric steering pump 15, the main drive motor 16, the electric main oil pump 17 and the electric air conditioning system 18 are integrated on the chassis 2. Chassis 2 is a 10×8 pure electric chassis vehicle. Kinetic energy recovery: the rotation of the wheels of the chassis 2 drives the main drive motor 16 through the transmission system 14, and then through the control of the motor drive system 8, the electrical energy is stored in the battery module 4. Potential energy recovery uses existing technology, so I won’t go into details here. Through the recovery of potential energy, the energy of the workover rig string is prevented from being dissipated into the air in the form of heat, which improves the energy utilization rate and meets the national energy saving and emission reduction requirements. The control cabinet 6 is equipped with remote monitoring, which can remotely transmit and store the operating parameters of the entire energy storage workover rig, so as to realize remote monitoring and remote debugging of the energy storage workover rig.

The nested derrick 1, which mainly carries the load of the workover and hoisting system; the chassis 2, which mainly fixes and installs the components of the whole machine, and controls the driving conditions in the cab; the charging and discharging socket cabinet 3, which is equipped with high-voltage direct charging sockets, and external three-phase AC charging socket, domestic electricity output socket; battery module 4, which provides electric energy for the driving and workover of the energy storage workover rig, and stores energy during reverse power generation; on-board charging cabinet 5, used for external 380V AC power supply Perform DC rectification and increase the voltage, charge the vehicle battery module 4, and perform automatic power balance between the external power supply and the discharge output of the battery module 4 when the external grid power is used for workover operations; the control cabinet 6 is used for fixed installation and programmable control , Various communication control modules, electrical connectors, 24V DC power supply modules. At the same time, the cabinet is equipped with rain-proof and dust-proof sealing strips to protect key electrical parts; electric air compressor 7 provides energy storage workover rigs For compressed air, the programmable controller automatically controls the start and stop of the electric air compressor by detecting the air system pressure and the pressure of the electric air compressor lubrication system; the motor drive system 8 inverts the high-voltage DC to AC through the inverter unit Variable frequency drives the main drive motor 16 and auxiliary motor to work separately; the household electrical cabinet 9, through the inverter power module, filter and isolation transformer, outputs 380V 50Hz AC power to meet the power supply of the wellsite office electrical; drawworks 11, through the transmission system 14 drives the winch 11 to wind the wire rope to realize the lifting or lowering of the traveling crane system; the driller console 12 mainly monitors the workover operation parameters and operates various components of the workover operation; the transmission system 14 mainly realizes the driving conditions and repairs Two-way transmission of power during well conditions, and mechanical interlocking device to achieve power interlocking of chassis 2 driving and workover operations; electric steering pump 15, providing hydraulic steering power for chassis 2 during driving conditions, realizing flexible operation of chassis 2 , Light and portable; the main drive motor 16 is used to power the chassis 2 for driving and workover operations. At the same time, it can realize reverse power generation according to the programmable controller and the motor drive system 8; the electric main oil pump 17 provides hydraulic kinetic energy for the workover operation to realize the The combined derrick 1 is raised and retracted, and the wellhead hydraulic tools provide hydraulic energy; the electric air-conditioning system 18 provides cooling or heating for the driving cab, and defrosts and defogs the windshield through the air duct in the cab to provide the cab Comfortable driving environment.

The center of the main driving motor 16 coincides with the center of the frame of the chassis 2. The smoothness of the operation of the chassis 2 is ensured.

The charging and discharging socket cabinet 3 is arranged on the side behind the cab of the chassis 2. The battery module 4 is arranged on one end of the frame beam of the chassis 2 close to the cab.

The on-board charging cabinet 5 is arranged adjacent to the battery module 4 to ensure that the battery module 4 is well charged. The control cabinet 6 is arranged adjacent to the battery module 4. The motor drive system 8 is arranged on the side of the frame girder of the chassis 2. The layout of the functional components on the frame of the chassis 2 is rationalized and the structure is compact.

The derrick is a nested derrick 1.

The driller console 12 is arranged at the tail of the chassis 2, and the driller console 12 is arranged on the Y-shaped leg of the sleeve derrick 1.

The height of the nested derrick 1 is 22 meters or more.

The winch 11 is more than 350 horsepower, and the horsepower of the winch 11 guarantees the large-tonnage hook load of the energy storage workover rig, and the hook load can reach 90 tons.

The energy storage workover rig is a dual standpipe drilling tool, which is arranged on the second deck 10. The dual vertical root drilling tool and the sleeved derrick 1 realize the dual vertical root operation of the energy storage workover rig, and improve the working efficiency of the pure electric energy storage workover rig.

The chassis 2 integrates a household electrical cabinet 9, one end of the household electrical cabinet 9 is connected to the battery module 4, and the other end of the household electrical cabinet 9 is connected to the charging and discharging socket cabinet 3. The battery module 4 outputs electricity to the household electrical cabinet 9 and provides an electrical interface for the household electricity through the sockets in the recharge and discharge socket cabinets. The design of this method greatly solves many household electricity problems at the work site.

The energy storage workover rig includes a discharge resistance cabinet 13, which is arranged on the side of the frame of the chassis 2 and the discharge resistance cabinet 13 is used to protect the battery module 4 from overcharging to a certain extent. The normal and continuous operation of the energy storage workover rig. The discharge resistance cabinet 13, when the battery module 4 is full, consumes the electric energy generated by the traveling crane system in the reverse direction to avoid impact on the external network.

The energy storage workover rig includes a mechanical interlocking device, and the main drive motor 16 is switched on the transmission system 14 by the mechanical interlocking device to realize the workover operation of the energy storage workover rig and the switching and interlocking of driving conditions.

The energy storage workover rig includes an electric interlocking device. The operation of the chassis 2 cab and the operation of the driller's console 12 are separately set with control programs. The control cabinet 6 controls the operation and the operation of the chassis 2 cab through the electric interlocking device. Operation switching and interlocking of the driller console 12.

The electrical interlocking device is a proximity switch. The proximity switch is arranged on the transmission system 14. After the mechanical interlock, the proximity switch generates an electric signal, which is transmitted to the control cabinet 6, and the control cabinet 6 controls the two sets of control programs to switch and interlock.

Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have Various changes and improvements fall within the scope of the claimed invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

An energy storage workover rig is characterized in that: the energy storage workover rig includes a battery module, and the workover operation and chassis walking of the energy storage workover rig are powered by the battery module.
The energy storage workover rig according to claim 1, characterized in that: the energy storage workover rig can use the potential energy released during the workover operation to charge the battery module and the kinetic energy of the energy storage workover rig to charge the battery module. .
The energy storage workover rig according to claim 1, wherein the energy storage workover rig includes a derrick, a chassis, a charging and discharging socket cabinet, a vehicle charging cabinet, a control cabinet, an electric air compressor, and a motor drive system. Second floor platform, drawworks, driller console, transmission system, electric steering pump, main drive motor, electric main oil pump, electric air conditioning system, the derrick, charging and discharging socket cabinet, vehicle charging cabinet, control cabinet, electric air compressor , Motor drive system, second deck, drawworks, driller console, transmission system, electric steering pump, main drive motor, electric main oil pump and electric air conditioning system are integrated on the chassis.
The energy storage workover rig according to claim 3, wherein the center of the main drive motor coincides with the center of the chassis frame beam.
The energy storage workover rig according to claim 3, wherein the charging and discharging socket cabinet is arranged on a side behind the cab of the chassis.
The energy storage workover rig according to claim 3, wherein the battery module is arranged on one end of the chassis frame beam close to the cab.
The energy storage workover rig according to claim 6, wherein the on-board charging cabinet is arranged adjacent to the battery module, and the control cabinet is arranged adjacent to the battery module.
The energy storage workover rig according to claim 3, wherein the motor drive system is arranged on the side of the frame of the chassis frame.
The energy storage workover rig according to claim 3, wherein the derrick is a sleeved derrick.
The energy storage workover rig according to claim 9, characterized in that the driller console is arranged at the rear of the chassis, and the driller console is arranged on the Y-shaped leg of the nested derrick.
The energy storage workover rig according to claim 9, wherein the height of the nested mast is 22 meters or more.
The energy storage workover rig according to claim 3 or 11, wherein the winch is 350 horsepower or more.
The energy storage workover rig according to claim 3, characterized in that: the energy storage workover rig is a dual standpipe drilling tool, and the two standpipe drilling tool is arranged on a two-story platform.
The energy storage workover rig according to claim 3, characterized in that: a household electric cabinet is integrated on the chassis, one end of the household electric cabinet is connected with a battery module, and the other end of the household electric cabinet is connected to a charging and discharging socket cabinet. Connected.
The energy storage workover rig according to claim 3, characterized in that: the energy storage workover rig comprises a discharge resistance cabinet, the discharge resistance cabinet is arranged on the side of the chassis frame girder, and the discharge resistance cabinet is used for Protect the battery module from overcharging.
The energy storage workover rig according to claim 3, characterized in that: the energy storage workover rig comprises a mechanical interlocking device, and the main drive motor is switched on the transmission system by the mechanical interlocking device to realize energy storage Workover rig workover operation, switching and interlocking of driving conditions.
The energy storage workover rig according to claim 16, characterized in that: the energy storage workover rig includes an electrical interlocking device, and the operation of the chassis cab and the operation of the driller’s console are separately set up with separate control programs. The interlock device is switched and interlocked by the control cabinet to control the operation of the chassis cab and the operation of the driller's console.
The energy storage workover rig according to claim 17, wherein the electrical interlocking device is a proximity switch.
The energy storage workover rig according to claim 3, wherein the control cabinet is provided with remote monitoring, which can remotely transmit and store the operating parameters of the entire energy storage workover rig.
The energy storage workover rig according to claim 1 or 2 or 6 or 7 or 14 or 15, characterized in that: the battery module voltage range: 400V ~ 800V, charging and discharging power is not less than 315KW, and electricity is not less than 140KWh, application environment temperature -20℃～+45℃, discharge current no less than 400A, support charging and discharging mode, charging power no less than 50KW.