Dallas-based Endurance Resources Holdings LLC, a portfolio company of Lime Rock Partners, has agreed to sell for an undisclosed sum most of its assets, primarily in the Permian Basin's Delaware formation, to two unnamed buyers. The transactions are expected to be completed by the end of the year. The agreements allow Endurance and Lime Rock "to realize value created in the acquisition and development of Endurance's assets," which primarily are in New Mexico's Lea and Eddy counties and in Reeves County, TX. "The buyers of both assets own complementary assets to the ones we have agreed to sell," Endurance CEO Don Ritter said.