Injection Well Market Size, Share, Growth, Trends, and Global Industry Analysis: By Type (Class I wells, Class II wells, Class III wells, and Class IV wells), By Purpose of Injection (Waste Disposal, Fluid Injection for enhanced oil recovery (EOR) Geothermal Energy Production, and Hydrological Testing), By Source (Originating from Industrial Processes, Municipal Wastewater, Produced Water from Oil and Gas Operations, and Geothermal Fluids), By Application (Oil and Gas Industry, Mining Industry, Municipal Services, Power Generation, Aquifer Recharge and Water Management), and Region Forecast 2020-2031