Global Drilling Fluid Equipment Market By Type (Pumps , Drilling Fluid Manifolds , Valves , Wafer Type Butterfly Valves , Pressure Gauges , Unions & Air Tubes , and Others), By Application (Oil & Gas , Water Well , and Geothermal Exploration), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2020-2029