NuVista Energy Ltd. (NuVista) is an exploration and production company, which is engaged in exploration, development and production of oil and natural gas reserves in the Western Canadian Sedimentary Basin. The Company's primary focus is on Montney formation in the Alberta Deep Basin (Wapiti Montney). The Company's products include natural gas, and condensate and oil. The Company's natural gas liquids include butane, propane and ethane.