The Houston-based private-equity firm OFS Energy Fund closed its third private-equity fund, which was oversubscribed and had a $175 million hard cap, the company said May 7.

The fund acquired and recapitalized middle-market energy service industry companies, the company added. It closed less than 90 days after it began fundraising, the company said. The fund, known as Fund III, had limited partners ranging from an Ivy League university endowment to a Fortune 100 pension plan and other investors, the company said.

Fund III had the same management team as the previous funds, the company said. However, Frank Schageman and Robert Whilden joined the team to work with the fund, the company added. Schageman joined as an operating partner and Whilden joined as a principal, the company noted. Schageman formerly was CFO of R360 Environmental Solutions, while Whilden had been executive vice president of Continental Energy Services, the company noted.