Helix Energy Solutions Group, Inc., together with its subsidiaries, an offshore energy services company, provides specialty services to the offshore energy industry in Brazil, the United States, North Sea, the Asia Pacific, West Africa, and internationally. The company operates through four segments: Well Intervention, Robotics, Shallow Water Abandonment, and Production Facilities. It engages in the installation of flowlines, control umbilicals, and manifold assemblies and risers; trenching and burial of pipelines; installation and tie-in of riser and manifold assembly; commissioning, testing, and inspection; and cable and umbilical lay. The company also provides well intervention, intervention engineering, and production enhancement services; coiled tubing operations; and inspection, repair, and maintenance IRM of production structures, trees, jumpers, risers, pipelines, and subsea equipment, as well as related support services. In addition, it offers reclamation and remediation services; well plug and abandonment P&A services; pipeline, cable and umbilical abandonment services; and site inspections. Further, the company offers oil and natural gas processing facilities and services; and fast response system, as well as site clearance and subsea support services. Additionally, it provides offshore oilfield decommissioning and reclamation, site clearance, project management, engineered solutions, intervention, heavy lift, and commercial diving services. It serves independent oil and gas producers and suppliers, pipeline transmission companies, renewable energy companies, and offshore engineering and construction firms. The company was formerly known as Cal Dive International, Inc. and changed its name to Helix Energy Solutions Group, Inc. in March 2006. The company was incorporated in 1979 and is headquartered in Houston, Texas.