AC Variable Frequency Electric Drive Drilling Rigs

AC variable frequency electric drive drilling rigs use gear reducer box to drivesingle shaft draw works and helicospiral base and are suitable for 114mm drill pipesand the drilling operation of oil wells, gas wells, and water wells with adrilling depth from 3,000m to 7,000m.The whole unit adopts diesel generating set as main active force, via VFD actuatingsystem converting the AC current output by diesel generating set into AC currentwith frequency adjustable, then via AC variable frequency motor driving the drawworks, rotary table and drill pump separately.Draw works, which adopts AC variable frequency control and energy dissipation braking,have the features of small volume, light weight, reliable performance, permanentworking, convenient maintenance The disc brake is used to parking brake,allocation and emergency stop. Main function achieves total numerical control throughcomputer and electric control system. AC variable frequency decelerating electricmotor acting as automatic drill and accident braking drives drum through gear reductionbox.The derrick is K type, low-level installation, integrated lifting and dropping, convenientremoving and installation, good stability and high security.Rig substructure has box on box type, slingshot and helicospiral type. All equipmentof floor adopts low-level installation and jack up in position through draw workspulling force.Rotary table is driven by AC variable frequency electric motor via chain reducinggear box, stepless speed regulation to achieve total numerical control for torqueand rotate speed.Drill pump is driven by AC variable frequency electric motor with high power, highpump pressure, which can measure up to stepless speed regulation from 0 to ratedrotational speed.Adopts advanced full numerical ventor control frequency conversion system which hasthe function of telesupervisory control and automatic trouble locating arrangementto ensure sensitivity and reliability, safety and high efficiency of control system.The whole unit is equipped with real-time display of drilling parameters, collection,storage, printing and setup system, which creates necessary conditions to achievedrilling project intelligentization and information. producing area:China