FuelFix (blog) | Warburg Pincus to Invest $500 Million in Oil and Gas Firm IRM New York Times By deploying money from its new energy fund, along with its 11th private equity fund, Warburg Pincus has become one of the few private equity firms to strike into an oil and gas investment at a time when the industry has been gripped with uncertainty ... Warburg is pumping $500 million into a start-up oil producer Warburg Pincus Commits Up to $500 Million to Oil and Gas Startup |