The Carlyle Group and a New York-based private equity firm have committed a $450m investment to Dynamic Offshore Resources LLC, a new oil and gas company that will focus on the acquisition and development of producing properties in the Gulf of Mexico, the Washington Business Journal reported. Joining D.C.-based Carlyle in the Dynamic Offshore Resources investment is Riverstone Holdings LLC, a private equity firm founded in 2000 that focuses on certain parts of the energy industry. Riverstone has committed more than $6 billion, to date, in more than 41 investments. The founders and management team at Dynamic Offshore Resources also plan to invest up to an additional $50m in the firm.