NGP Energy Capital Management, a private equity firm, completed the investment in Wellspring Energy Resources, a company that focuses on partnering with energy companies and owners to provide flexible capital solutions through the acquisition of non-operated interests, development financing, and structured transactions. Financial terms were not disclosed. “NGP is excited to partner with the Wellspring team. We believe Kenny and his team possess the right mix of operational experience, business development capabilities and investment acumen to execute on this strategy,” Brian Seline, NGP Partner.