AC Electric Motor Sales in Oil & Gas Market by Type (Induction & Synchronous), Voltage (< 1 KV, 1-6.6 kV, > 6.6 kV), Output Power, HP (< 1 HP, > 1 HP), Output Power, kW (0.12-7.5 kW, 7.5-110 kW, 110-1000 kW, >1000 kW) and Region - Global Forecast to 2023