Brief Description:
The top drive system is a drilling technology that uses a suspended motor (typically electric or hydraulic) to provide the torque needed to rotate the drill string. This system replaces the traditional rotary table and kelly drive methods, offering advantages like increased drilling efficiency, reduced manual labor, and improved safety
DQ40B-VSP top drive features
1.Folding guide Rails: Top drive installation is safe, quick and convenient.
2.Equipped with 360° swivel head rotation function.
3. The pulley adopts a double-wheel structure to avoid single force on the roller and extend the service life of the roller.
4. IBOP Rack and Pinion Drive Mechanism: Ensures precise and accurate switching of IBOP (Internal Blow Off Preventer).
5. Inclined hanging backup tong: Replacing tong teeth and tong teeth seat becomes faster and more convenient.
6.Hydraulic Radiator: Extends the life of the hydraulic system.
7. The internal counterbalance is adopted: which makes the jump safe and stable. No other components are needed to hang the big hook or the traveling carriage, and it can be hung directly.
8.The cross-sectional size of the top drive is small: and it is more suitable for derricks.
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- Typical Parameter
Items |
Data |
(British System) |
Nominal drilling depth (114mm drill pipe) |
4000m |
Rated Load capacity |
2660 KN |
300 ton |
Working height (96" elevator link) |
5770mm |
18.93 ft |
Rated continuous output torque |
50 KN.m |
36878 lb.ft |
Max. Torque of breakout |
75 KN.m |
55317 lb.ft |
Static maximum brake torque |
50 KN.m |
36878 lb.ft |
Speed range of main shaft (stepless adjustable) |
0~180 r/min |
Drill pipe range of back-up tong clamping |
85-187mm |
Max bore hole of back up tong |
200 mm |
7.87 in |
Mud circulation |
64 mm |
2.5 in |
Rated pressure of the mud circulation |
35/52 MPa |
5000/7500 Psi |
Rotation angle of rotating head |
0-360° |
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Speed of rotating head |
2~5r/min |
Max.tilt angle of elevator link |
Forward 30°, backward 55° |
IBOP(double ball valves ) |
Φ187 6-5/8 REG 70MPa |
Saver Sub ( standard ) |
Φ187 6-5/8 REG NC50 |
Working Pressure of hydraulic system |
0~14Mpa |
0~2280 Psi |
Voltage of EX solenoid valves |
24 VDC |
Rated Power of Main motor |
470KW |
630HP |
Rated Speed of Main motor |
1200 r/min |
Rated Torque of Main motor |
2308 N·m |
1702.29 lb.ft |
Rated Voltage of Main motor |
600 VAC |
Rated frequency of Main motor |
61 Hz |
Rated current of Main motor |
365 A |
Max. speed of Main motor |
2400 r/min |
Electricity of VFD room |
600 VAC/50Hz |
Suitable ambient temperature |
-45ºC~55ºC |
Altitude |
≤1,200 m |
≤3,937ft |
Distance between center of main shaft and center of guide rail |
525 mm |
1.722 ft |
Incoming wire voltage of VFD room |
575~625 VAC |
Incoming wire frequency of VFD room |
600 VAC/50 Hz |
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- Outline dimension and weight
Items |
Data |
Dimension of Main Body |
5600mm*1255mm*1153mm |
Weight of Main body |
8t |
Weight of Main body (include transportation frame and one section of guide rail) |
10 t |
Length of guide rail ( standard 5 sections) |
3900mm+4000mm*4+4868mm=24768mm |
Weight of guide rail |
9 t |
Weight of VFD room |
11 t |
Dimension of VFD Room |
6058mm*2438mm*2951mm |
Dimension of driller console |
800 mm×350 mm×300 mm |
Weight of driller console |
30kg |
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- Drilling Parameters
Items |
Specification |
Transmission ratio |
13.37:1 two-stage transmission |
Lubrication method |
Splash lubrication, forced lubrication, immersion lubrication |
Back tong diameter |
Φ200mm |
Back tong clamping range |
86~ 187mm |
Elevator link |
2740mm, 250ton Other models optional |
Mechanical system
The mechanical system is composed of main motor system, air cooling system, brake system, gear box, wash pipe assembly, rotating head mechanism, tilt mechanism, back-up tong mechanism, internal blowout prevention mechanism (IBOP), guide rail and carriage mechanism, container, etc.
The top drive is powered by an AC frequency conversion asynchronous motor to realize AC frequency conversion drive.
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- Main Motor and Air Cooling System
The main motor is a single top drive special AC frequency conversion asynchronous motor with a power of 290KW. The main technical parameters include:
Rated Voltage 600VAC
Rated Frequency 61Hz
Rated Current 365A
The main motor is equipped with a heater and an explosion-proof wind pressure switch
The main motor adopts forced air-cooling mode.
The air-cooling motor : voltage 380VAC / 50Hz, power 4kW, insulation grade F, protection grade IP55, explosion proof level ExdIICT4, wind capacity not less than 70 m3/min, air pressure 203mm water column.
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- Break System
The top drive main motor is equipped with a set of special hydraulic disc brake device, which can assist the drill string orientation in the directional inclined drilling operation.
The disc brake device is installed at the upper extension end of the motor shaft, using a pair of Swedish DELLNER cylinders connected by a special hard pipeline, durable. When the speed of the main motor is reduced to 3rpm, the friction forces on the brake disc through the brake cylinder can realize the braking function of the main motor.
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- Gear Box
In order to increase the output torque of the top drive motor, reduce the motor volume and improve the motor performance, one set of gear box is configured.
Embrace the power of precision with our robust gearbox design, strategically engineered to feature an involute hard tooth surface gear, paired with secondary bevel gear technology for seamless, stable transmission. Boasting an impressive transmission ratio of 11.91:1, the gear box ensures optimal performance. The advanced lubrication system combines splash lubrication with forced oil pump circulation, ensuring every component runs smoothly and efficiently.
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- Gooseneck Assembly
Our gooseneck assembly is meticulously crafted for well logging precision. During drilling, it features corrosion-resistant liners and nuts, effectively sealing off the upper high-pressure mud pipeline to prevent any unwanted mud overflow-ensuring a clean and efficient operation.
One meticulously engineered end of the gooseneck seamlessly integrates with the wash pipe assembly. This assembly is built with a super high-pressure structure, key for sealing high-pressure mud. Its design includes self-sealing capabilities and a rapid disassembly structure. When wear and tear affect the wash pipe and packing, a simple procedure suffices to replace them: merely open the cover of the upper and lower packing and easily remove the entire device without detaching the gooseneck or the mud hose. This design allows for quick halts in drilling, facilitating replacement at any given time during the drilling process, ensuring minimal downtime.
The opposite end of our gooseneck is expertly connected to the mud hose with a secure 4-inch female union, featuring a Fig1003 thread type, ensuring a strong and reliable connection.
Enhancing safety, a mud prevention device is strategically installed at the junction between the main shaft and the wash pipe, perfectly aligning with site operation requirements.
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- Rotating Head
Our state-of-the-art rotating head system is an engineering marvel, capable of rotating independently from the main shaft. The elevator links are expertly suspended on a link adaptor, ensuring stability and precision.
Featuring a reliable worm gear transmission structure, the rotating head guarantees smooth and efficient rotation.
Engineered to perfection, the rotating head can effortlessly rotate both clockwise and counterclockwise in a full 360°, enabling it to synchronize the elevator link and elevator to rotate as one, adeptly handling single pipes in the mouse hole and triple stems on the monkey board with unparalleled ease.
The rotating head's dynamic rotation is powered by a cutting-edge hydraulic motor system, utilizing the renowned Danfoss cycloid motor with a versatile speed range of 2 to 5 r/min.
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- Tilt System
Experience the innovative tilt system, driven by a precise tilt cylinder that commands the elevator link to effortlessly swing, enabling forward and backward tilting. The forward tilt function extends the elevator to reach the mouse hole and monkey board with precision. During drilling operations, the backward tilt function positions the lower end surface of the backup tong close to the drilling platform allowing optimal utilization of the drilling tool set.
The tilt range is adjustable, contingent on the elevator link's length, offering a forward angle of 30 degrees and a backward tilt of 55 degrees.
Note: Should you require customized length links, please coordinate with our sales team in advance for seamless integration.
The hydraulic system is configured with a 'middle' setting, enabling the elevator link to automatically return to a free swing state, thus preventing pressure-induced impacts on the hydraulic system.
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- Counterbalance System
Our suspension bail counterbalance system is an integral component of the top drive system. Ingeniously connected to the gear box via a pin shaft, and securely suspended on the hook or traveling block, it efficiently balances the body weight. The VSP top drive employs dual hydraulic cylinders with an internal force balance mode, allowing direct suspension with a hook or traveling block. This design ensures superior safety and reliability during operations.
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- Back Up Tong Assembly
Our comprehensive back up tong assembly includes a high-quality L-type back up tong assembly, powered by an advanced motor system. The cylinder mechanism is ingeniously designed to clamp, release, makeup, and breakout, allowing it to effortlessly connect and detach the saver sub. Experience seamless efficiency and reliability. Our system operates without the need to disassemble the tong body, streamlining drilling operations to perfection. The integration of a tilt mechanism and rotating head forms a comprehensive pipe handling device, boosting the efficiency of makeup and breakout activities as well as drilling tool layout tasks. This innovation significantly reduces labor intensity and mitigates the risk levels for the crew.
The system accommodates a diverse drill pipe range from 85mm to 187mm, ensuring versatility and adaptability.
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- Internal Blow Out Preventer (IBOP)
This system showcases an integrated design, featuring both manual and remote control capabilities through a double ball valve configuration. The main technical parameters are meticulously outlined as follows:
Working Pressure 70MPa, providing robust resilience and reliability.
Thread Type 6-5/8" API REG × 6-5/8" API REG, ensuring seamless and secure connections.
O.D. Φ187mm, optimized for superior performance.
I.D. 3", offering ample space for efficient operations.
The remote control IBOP actuator is equipped with a pair of hydraulic cylinders, an IBOP sliding sleeve, and a gear system. The cylinder and sleeve connection employs a roller mechanism to ensure synchronized axial movement of the sleeve with the main shaft's rotation, enhancing precision and control. The connection between the sliding sleeve and the cylinder ensures a smooth roller touch, facilitating simultaneous axial movement of the sleeve with the rotation of the main shaft, maintaining alignment and efficiency. Moreover, the drive wrench enables the seamless opening and closing of the manual IBOP, ensuring operational fluidity.
This advanced feature allows for the quick closure of the IBOP in the event of a well kick or blow-out, providing critical well control safety.
The IBOP sliding sleeve utilizes a gear rack-driven system with cam gear for improved reliability and performance.
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- Guide Rail and Carriage
Our folding guide rail assembly is expertly configured with multiple sections of guide rails, connections, crown block support, an adjustable beam assembly, and essential installation accessories.
This folding design allows for rapid and convenient site installation, enhancing operational efficiency.
The carriage and guide rail friction system employs a pulley structure for smooth and efficient operation.
The pulley incorporates a double-side cam follower design, ensuring even stress distribution across rollers and prolonging the lifespan.
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- Container
To facilitate easy transportation, we provide two open-top containers: one for the top drive body and another for the guide rail and cable assembly, ensuring safe and organized transport.
Electrical Control System
The top drive's electrical control system includes a main control system, an electrical control room, a driller's console, various power and control cables, including auxiliary and composite cables, and grounding systems, all designed for optimal performance. Our system ensures comprehensive connectivity and reliability with a driller's console cable, grounding cable, and more.
The top drive is powered by an AC asynchronous induction motor, which utilizes an AC frequency conversion drive mode to deliver unparalleled drilling power.
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- Main Control System
This sophisticated electrical control system is equipped with the ABB ACS880 AC frequency conversion speed regulating device, a programmable logic controller (PLC), and an auxiliary control unit. The system boasts a complete suite of self-diagnosis, protection, and anti-harmonic interference functions, ensuring all electrical control functions of the top drive are flawlessly executed.
The system integrates the cutting-edge Simatic S7-1500 series PLC from Siemens, managed via the ProfiBus-DP bus, enabling precise system operating parameter settings and comprehensive hardware and software status detection.
Experience the ultimate in control and precision with our ProfiBus bus-managed main control system and driller console, boasting unparalleled anti-interference capabilities. Enjoy seamless and reliable operations, ensuring that installation, on-site use, debugging, and maintenance are as straightforward and convenient as possible.
Our auxiliary control unit, sharing a sleek cabinet with the sophisticated PLC, integrates high-quality Siemens electrical components for superior performance and reliability.
Delve into our intuitive IPC system, designed to vividly display comprehensive top drive operation parameters, system settings, and alarm records. Monitor action screens, data curves, and access maintenance information and network topology with ease.
Precisely monitor torque and speed with our main control cabinet, which thoughtfully provides two reserved analog output interfaces-4 ~ 20 mA or 0~10V-dedicated to logging these essential signals.
Opt for enhanced connectivity with our reserved networking interface, allowing seamless integration into wireless or mobile networks to facilitate remote data transmission of top drive operations.
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- Electrical Control Room (VFD Room)
Experience consolidated efficiency as the electric drive and control system cabinets are smartly housed within the electrical control room, offering robust installation and effortless maintenance.
Enjoy optimal operational conditions with air conditioning equipment installed in the VFD room, maintaining a comfortable temperature range of 25ºC -30ºC.
The interior aesthetic of the control room boasts durable plastic spray steel plates, with wall-installed interface ports ensuring smooth connectivity with external cables.
The electric control room is augmented with an external 380V emergency power interface, ensuring seamless operations such as makeup, breakout, and low-speed functions, even under special circumstances with a power supply of no less than 200KW.
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- Driller Console
Our driller console, engineered for precision, can be securely installed within the driller house, empowering efficient control and operation of the top drive.
Embrace safety with our driller console featuring a stainless steel shell and a positive pressure explosion-proof design. The integrated explosion-proof device includes a pressure release valve, air and water separator, joints, interfaces, filters, and more. In case of abnormal air pressure, it triggers sound and light alarms, alongside indicator lights on the console panel to signal issues immediately.
Designed with versatility in mind, it supports torque limits, elevator link tilt, backup tong and brake operations, IBOP operation, and emergency stop for comprehensive drilling control, complemented by necessary operation indicators and instruments.
Our console is equipped with essential switches, indicators, fittings, and connectors, all tailored to the top drive's operational demands.
The console's 9-inch LCD screen provides a clear display of the top drive's working status, faults, and various operational states to keep you informed at all times.
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- Power Service Loop
Our standard power service loop is expertly designed to effectively supply power to the main motor,
securing stability with a dedicated terminal rack on the derrick for power loop fixation.
This loop's cable adheres to the stringent ZR specifications perfectly tailored for domestic offshore drilling environments.
Power Cable Length: 70m;
featuring explosion-proof connectors, rated at level Exd IIC T5 for assured safety.
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- Auxiliary and Control Service Loop
Our auxiliary and control service loop matches the power service loop in length, ensuring seamless integration and functionality.
This loop also extends to 70m;
and is equipped with explosion-proof connectors, maintaining a safety rating of level Exd IIC T5.
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- Power Supply Cable
A robust power supply cable is provided, bridging the generator to the electrical control room with a length of 35m and a voltage of 0.6 / 1KV, employing a standard wire lug for connection.
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- Control Cable of Driller Console
A meticulously crafted 70-meter control cable is expertly configured to seamlessly facilitate power supply and communication between the driller console and the CPU, ensuring unparalleled connectivity and operational efficiency.
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- Grounding Cable
A comprehensive grounding cable assembly is thoughtfully configured, utilizing premium domestic cables. This includes two robust 1.5-meter galvanized grounding rods, alongside two 5-meter cables, guaranteeing impeccable grounding solutions.
Hydraulic Control System
The hydraulic system, meticulously integrated within the top drive body, comprises a sophisticated hydraulic source, an advanced hydraulic main control valve set, dynamic hydraulic actuators, supportive hydraulic auxiliary components, and an efficient hydraulic oil radiator, offering unparalleled performance.
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- Hydraulic Source
The hydraulic source boasts an inclined axial plunger variable pump, meticulously engineered for hydrostatic transmission within open circuits. Its flow is intricately proportional to drive speed and displacement, allowing seamless flow adjustments through precise inclined plate angle adjustments, while the dual oil outlets provide exceptional oil suction capabilities. The system excels with superior oil suction properties, operates with minimal noise, and ensures an extended service life. The robust drive shaft is designed to withstand both axial and radial loads, ensuring durability and reliability.
Designed with utmost safety in mind, the hydraulic source's electrical circuit system features an explosion-proof design, with all electrical control boxes and motors utilizing explosion-proof components.
The main technical parameters of the hydraulic system are as follows:
System's rated working pressure: 14 MPa
Rated hydraulic pump flow rate: 16 mL/r
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- Hydraulic Valve Manifold
The hydraulic manifold is expertly equipped with high-quality plug valves and solenoid valves crafted by the renowned WANDFLUH Company, ensuring optimal performance. The solenoid valves, like the plug valves, are prestigious products from the reputable WANDFLUH Company.
The hydraulic control valves are of the innovative plug-in type, ensuring precision and reliability. All solenoid reversing valves are expertly designed to be explosion-proof. Here is the detailed composition of the system:
First line: The counterbalance system, intricately controls the oil circuit, consisting of a pressure relief overflow valve, a hydraulic control check valve, a throttle valve, and an accumulator. This system masterfully balances the body's weight, preventing thread wear during joint makeup and breakout. The pressure relief overflow valve adjusts the balance cylinder's working pressure, the accumulator provides shock absorption, and the safety overflow valve, set at 17 MPa, shields the hydraulic cylinder from impact loads.
Second line: Main motor brake oil circuit, incorporating EX solenoid reversing valves for superior control. Solenoid reversing valves are used to expertly manage the motor brake oil circuit for optimal performance.
Third line: The motor oil circuit on the rotating head comprises an explosion-proof solenoid reversing valve and a pressure regulating valve. The solenoid valve's damping hole, crafted from hard alloy material, is designed to significantly extend service life.
Fourth line: The IBOP's remote control oil circuit comprises reliable explosion-proof solenoid reversing valves to ensure safety and efficiency.
Fifth line: Backup tong control oil circuit, meticulously equipped with explosion-proof solenoid reversing valves and a precise pressure sensor.
Sixth line: The tilt system oil circuit, crafted with an explosion-proof solenoid reversing valve and throttle check valve. The solenoid valve facilitates precise reversing, while the throttle check valve ensures the elevator link can remain in any desired position, ready to transition to a swing state when in the middle position.
Each oil circuit is equipped with pressure detection points for vigilant monitoring of working pressure. Air evacuation through these points in each oil circuit and cylinder ensures smooth and efficient system operation.
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- Hydraulic Actuator
The hydraulic actuator is a marvel of engineering, meticulously crafted with precision to include several essential components.
This state-of-the-art assembly features: Counterbalance Cylinder (2 units), Break Cylinder (2 units), the powerful Drive Motor of the rotating head (1 unit), IBOP Actuator Cylinder (2 units), Back-up Tong Cylinder (1 unit), and Tilt Cylinder (2 units). Each part is designed to deliver exceptional performance and reliability.
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- Hydraulic Auxiliary Components
Our hydraulic auxiliary components are thoughtfully designed to include accumulators, filters, and a robust oil tank. Together, they form the backbone of hydraulic efficiency, ensuring optimal performance.
Accumulators Our sophisticated accumulators are expertly divided into brake accumulators and balance accumulators, each serving a critical role in maintaining system equilibrium.
Filters are essential for purity and performance, strategically divided into oil filters, high-pressure filters, oil return filters, and air filters to ensure seamless operation and longevity.
A meticulously engineered upper mounted oil tank is installed to store the hydraulic oil essential for system operations, while efficiently dissipating heat to maintain optimal system temperature.
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- Radiator
Positioned at the air inlet of the cooling blower, the radiator employs the main motor to forcefully cool hydraulic oil, thereby significantly enhancing the service life and stability of the entire hydraulic system.