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DD-25DC Truck-mounted Drilling Rig
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Drilling Construction Capability Drilling Depth (φ114mm Drill Pipe) 2500m Maximum Opening Diameter Φ1200mm Maximum Static Hook Load 1500kN Maximum Drill String Weight 750kN Top Drive Pressurization Capability 200kN (including top drive self-weight) Applicable Drill Tool Length 13.3m Traveling System Hook Speed at Low Gear 0~0.314m/s (stepless speed regulation) Hook Speed at High Gear 0~0.667m/s (stepless speed regulation) Effective Rope Number 6×7 Wire Rope Diameter Φ24mm (Grade 1870) Top Drive Structural Form Rare Earth Permanent Magnet Synchronous Motor Direct Drive Speed 0~200r/min (stepless speed regulation) Drilling Torque 22kN.m (continuous) Maximum Breaking out Torque 35kN.m (intermittent) Rated Load 1500kN Rated Power 235kW Mud Channel Diameter Φ105mm Mud Channel Pressure 35MPa Main Drawworks Structural Form AC Variable Frequency Motor + Two-Stage Gearbox Maximum Input Power 315kW Fastline Speed (Low Gear) 0~3.767m/s Fastline Speed (High Gear) 0~8m/s Fastline Tension (Low Gear) 125kN Fastline Tension (High Gear) 62.5kN Main Brake Type Energy Consumption Brake Safety Brake Hydraulic Disc Brake Automatic Drilling Drilling Speed 0~0.01m/s (traveling hook speed) Drilling Accuracy ≤3kN Drilling Mode Constant Pressure or Constant Speed Mast Structural Type Two-Section Telescopic Design Rated Load 1500kN Effective Height 20m Drilling Platform Height of Drill Floor 2.2m Rated Load 1500kN Main Carrier Rig Structural Form 10×10 Special Chassis Emission Standard National VI Professional Emergency Rescue
This truck-mounted drilling rig is specially designed for emergency rescue, featuring the following technical characteristics:
① Adopting the technology scheme of truck- mounted main body+modular design, the rapid response capability is outstanding. Once a rescue task is received during the construction process, it can be dispatched within two hours, and drilling can be started within two hours upon arrival at the rescue site;
② Maximum opening diameter of 1.2m, maximum lifting and load capacity of 1800kN, facilitating the construction of large-diameter rescue holes;
③ Top drive continuous drilling torque of 22kN.m, maximum torque of 35kN.m, maximum lifting speed of the traveling block is 0.667m/s, providing rapid hole formation capability for large-diameter drilling.
④ It can be equipped with drilling pumps or air compressors according to process requirements. In addition to mud circulation, it can also be suitable for air-lift reverse circulation, positive circulation down-the-hole hammers, reverse circulation down-the-hole hammers, and other air (foam) drilling processes, meeting the complex working conditions required for emergency rescue.
⑤ Adopt "suspended drilling" process, with constant pressure automatic drilling accuracy ≤3kN, effectively controlling well deviation, reducing correction times, and achieving rapid and accurate tunnel penetration.
Wide Application Fields
This truck-mounted drilling rig has large lifting capacity (1800kN), large hole diameter (1.2m), and large drilling torque (35kN.m), providing strong construction and accident handling capabilities. In addition to emergency rescue, it can also be applied to grouting holes in coal mines within 3000 meters, geothermal wells, oil and gas wells, and large-diameter drilling construction within 1000 meters.
It is equipped with a 2.2m (height customizable) drilling platform, facilitating the installation of grouting joints at the wellhead during grouting hole construction; convenient for loading and unloading large diameter drill bits during large-diameter drilling; and can install blowout preventers at the wellhead during oil and gas well construction.
Energy Saving, Safe, and Efficient
① The truck-mounted drilling rig is equipped with drilling pumps, top drives, and main hoists, all using AC variable frequency electric drive. Among them, the top drive and drilling pump adopt rare earth permanent magnet synchronous motor direct drive technology, which is more efficient than hydraulic drive. When using grid electricity, energy savings can reach over 60%. When using diesel generators without grid electricity, energy savings can reach 10% to 30%, being green and environmentally friendly, effectively reducing carbon emissions.
The truck-mounted drilling rig is equipped with digital detection technology and a complete safety protection program (triple brakes, two collision prevention systems, etc.), helping the driller monitor downhole parameters (drilling pressure, well depth, mud flow rate, mud pressure, drill bit torque, rotation speed, etc.) and equipment operating status (temperature at key points, voltage and current of the motor, etc.), effectively preventing downhole accidents. It also comes with a complete drill string handling system, which can effectively prevent accidents during wellhead operations.
The truck-mounted drilling rig adopts a two-speed drawworks + elevator link and elevator mode for tripping in&out, where the top drive spindle does not need to be connected to the drilling tools. Compared to the full hydraulic drilling rig's power head tilting mode, the efficiency of tripping in&out operations can be improved by more than 20%, and it can also avoid frequent disconnections that cause damage to the threads of the drilling tools, thus extending the life of the drilling tools.
High Degree of Automation
The truck-mounted drilling rig is equipped with dual-position driller control cabin, and the main drawworks, top drive, and drilling pump use AC variable frequency electric drive. The top drive and drilling pump also use water cooling technology, which can significantly reduce noise at the construction site and effectively improve the working environment for the driller and wellhead workers.
The truck-mounted drilling rig has two automatic drilling modes: constant pressure and constant speed, and is equipped with a complete automatic drill string handling system. With 2 drillers and 1 wellhead assistant (monitoring equipment operation), the drilling rig can operate normally. The degree of automation is very high, which can greatly reduce the heavy physical labor caused by frequent lifting and lowering of this single operation drilling rig.
DD-25DC Truck-mounted Drilling Rig
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