Maintenance & servicing of VFD & AC-SCR Oil Drilling Rigs equipment. Troubleshoot & Repair of ABB Drives, Siemens Drives. Troubleshoot & Repair of Siemens PLC, Allen Bradley PLC. Troubleshoot & Repair of "Top Drive" of NOV, CANRIG, TESCO. Troubleshoot & Repair of "Rig Instrumentation" of MD TOTCO Rig Sense, SWACO and EPOCH. Troubleshoot & Repair of Automated Drill Pipe Handler. Troubleshoot & Repair of Auto Drill system. Troubleshoot & Repair of HPU (Hydraulic Power Station) of Drilling rigs.