Casualty Insurance for Oil and Gas Sector Comprehensive Study by Application (Upstream, Midstream, Downstream), End Users (Exploration and Production Companies, Drilling Contractors, Oil Field Service Contractors, Oil Lease Operators, Pipeline Operators and Contractors, Plant Maintenance Contractors, Others), Coverage (Workers' Compensation, Automobile Liability, General Liability, Excess and Umbrella Liability) Players and Region - Global Market Outlook to 2025