Integrated natural gas company EQT Corporation (formerly Equitable Resources) hopes to get its fair share of the natural gas market. EQT Production exploits proved natural gas reserves of 10.7 trillion cu. ft. of natural gas equivalent in the Appalachian region (primarily in the Marcellus shale basin). EQT Production sells its natural gas products to Appalachian-area utilities and industrial customers and to marketers, including EQT Energy, its own gas marketing affiliate. EQT Midstream Partners operates about 8,200 miles of gathering pipeline and 750 miles of transmission lines. In 2015 the company formed EQT GP Holdings, LP, to own the company's partnership interests in EQT Midstream Partners.