Range Resources-Louisiana, Inc., formerly Memorial Resource Development Corp, is an independent natural gas and oil company focused on the acquisition, exploration and development of natural gas and oil properties with substantially all of its activities in the Terryville Complex of North Louisiana. The Company's segments include MRD and Memorial Production Partners LP (MEMP). The MRD Segment is focused on the acquisition, exploration, and development of natural gas and oil properties primarily in the Cotton Valley formation in North Louisiana. The MEMP Segment is engaged in the acquisition, exploitation, development and production of oil and natural gas properties, with assets consisting primarily of producing oil and natural gas properties that are located in Texas, Louisiana, Colorado, Wyoming and offshore Southern California. The MEMP segment reflects the combined operations of MEMP and its subsidiaries.