Helix Energy Solutions Inc., known as Cal Dive International prior to 2006, is an American oil and gas services company headquartered in Houston, Texas.

The company is a global provider of offshore services in well intervention and ROV operations of new and existing oil and gas fields.

was acquired by Diversified Energy International (DEI) whose financial backing allowed the company to expand with two converted diving vessels.

[3] In 1992, after it established a business model of acquiring offshore oil and gas properties near the end of their production life in the Gulf of Mexico, Cal Dive Intl.

management bought out Merrill Lynch in 1993, and then sold 50% of the company to First Reserve Corporation in 1995, to raise more capital to support a growing deepwater program.

[citation needed] In 2015, Helix Energy Solutions Group saw its profit tumble 78 percent in the fourth quarter as upstreams curb drilling activity.