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Features
● Control technology is with the mechanical, electronic and hydraulic integration. Output parameters of frequency converter matched with the characteristics of the motor; PLC programme designed according to the requirement of the customer. It has functions of monitoring, alarming, self-diagnosis, protection and interlocking, which conform to drilling condition.
● Rotating head adopts two ducts to supply oil to tilt hydro cylinder, so link can incline forward and swing backward; as each duck is sealed doubly, the leakage is reduced greatly and the reliability of the equipment is improved; the rotating head can rotate with drilling tools while tripping, so the settlement of the accident is easier.
● Simple inserted inner housing structure; back-up tong and IBOP oil cylinder don’t rotate with rotating head.
● It has double load channels. The bearing of gearbox bears the weight during drilling and the bearing of rotating head bears the weight during tripping, therefore, the service life of bearings and main shaft will be prolonged and anti-vertical vibration of drilling string will be improved.
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Features
● Control technology is with the mechanical, electronic and hydraulic integration. Output parameters of frequency converter matched with the characteristics of the motor; PLC programme designed according to the requirement of the customer. It has functions of monitoring, alarming, self-diagnosis, protection and interlocking, which conform to drilling condition.
● Rotating head adopts two ducts to supply oil to tilt hydro cylinder, so link can incline forward and swing backward; as each duck is sealed doubly, the leakage is reduced greatly and the reliability of the equipment is improved; the rotating head can rotate with drilling tools while tripping, so the settlement of the accident is easier.
● Simple inserted inner housing structure; back-up tong and IBOP oil cylinder don’t rotate with rotating head.
● It has double load channels. The bearing of gearbox bears the weight during drilling and the bearing of rotating head bears the weight during tripping, therefore, the service life of bearings and main shaft will be prolonged and anti-vertical vibration of drilling string will be improved.
● For inclining and swinging clamping back-up tong, the patented technology, it has big moment of clamping force and reliable clamping, so it is easy to replace protection connections and tong dies.
● The main hydraulic pump can be turned off while drilling and directional well drilling, thus the service life of the pump will be prolonged. In case that hydraulic system breaks down, drilling and reaming can be continued.
● Integrated hydraulic system and oil tank are placed on the body of the top drive; the system sends out low heat, which is convenient for installation.
● A new single guide beam, the patented technology, has single pin and locking mechanism, so installation and dismantling are simple and rapid.
● Scientific design, compact structure and reasonable arrangement make field maintenance and parts replacement easier.
Specifications of Top Drive Drilling Equipment
Item
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DQ-40LHTY-A
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DQ-50LHTY1
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DQ-70LHTY1
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Rated Load Capacities
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250 ton
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350 ton
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500 ton
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Working Height
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16.80 ft/108in link
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19.35 ft/130in link
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19.91 ft/130in link
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Rated Power Of Motor
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350 HP
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476 HP
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2×476 HP
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Torque Of Zero Rotary Speed (continuous)
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100%
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100%
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100%
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Over Load Capacity Of Zero Rotary Speed
(1 min)
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167%
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167%
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167%
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Drilling Torque (continuous, maximum) (<110r/min)
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19,180 ft-lb
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26,500 ft-lb
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40,000 ft-lb
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Maximum Torque Of Break Out
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28,770 ft-lb
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36,900 ft-lb
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59,000 ft-lb
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Brake Torque
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47,320 ft-lb
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39,000 ft-lb
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39,000 ft-lb
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Rated Circulation Pressure
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5,000 psi
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5,000 psi
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5,000 psi
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Rated Pressure Of IBOP
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1,000 psi
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10,000 psi
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10,000 psi
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Inner Diameter Of Main Shaft Passage
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3 inch
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3 inch
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3 inch
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Height Above Sea Level
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≤3,937 ft
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≤3,937 ft
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≤3,937 ft
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Distance Between Main Shaft Center And Guide Beam Center
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1.67 ft
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2.26 ft
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3.25 ft
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Max. Distance Between Main Shaft Center And The Front End
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1.48 ft
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1.56 ft
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1.54 ft
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Power Voltage
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575~625 VAC
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575~625 VAC
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575~625 VAC
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Power Frequency
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50±4% Hz
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50±4% Hz
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50±4% Hz
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Rated Working Current
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310A
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436 A
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436 A×2
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Maximum Peak Current
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465 A
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775 A
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775 A×2
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Range Of Rotary Speed
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0~180 r/min
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0~180 r/min
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0~220 r/min
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Ambient Temperature
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-35℃~55℃
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-35℃~55℃
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-35℃~55℃
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