Babson Capital provided subordinated debt and equity to support One Rock Capital Partners’ acquisition of Petroplex Acidizing Inc. Babson Capital co-led the subordinated debt on the transaction.

Petroplex, headquartered in Midland, TX is a leading provider of acidizing services to oil and gas exploration and production customers in the Permian Basin. Founded in 1981, the company provides acidizing and chemical treatments for oil, gas and injection wells. Also offering a complete line of oil field stimulation chemicals and blends, including proprietary products, Petroplex is positioned as a quality economical alternative to major service providers.

“Babson Capital is excited to work with One Rock on its investment in Petroplex,” said Robert Shettle, managing director of Babson Capital’s Mezzanine & Private Equity Group. “With One Rock’s operational and strategic support, Petroplex is well-positioned for growth as new drilling technologies enhance the ability of oil and gas producers to tap the Permian Basin’s vast potential, and we look forward to participating in its success.”

One Rock Capital Partners, based in New York City, is a private investment company that provides equity capital for high-potential middle-market businesses.

Babson Capital Management and its subsidiaries serve institutional investors around the globe and have over $154 billion in assets under management as of September 30, 2012.