Breitburn Energy Partners LP said Sunday that EIG Global Energy Partners has invested $1 billion. The deal includes $350 million of perpetual convertible preferred units and $650 million of senior secured notes. The offerings are expected to close on April 8. Breitburn is buys, develops and produces oil and gas properties throughout the United States. Jefferies LLC was lead placement agent and sole financial advisor to Breitburn while Credit Suisse was financial advisor to EIG.