Encana Corporation is an energy producer that is focused on developing its multi-basin portfolio of natural gas, oil and natural gas liquids (NGLs) producing plays. The Company's operations also include the marketing of natural gas, oil and NGLs. All of its reserves and production are located in North America. It operates through three segments: Canadian Operations, USA Operations and Market optimization. Its Canadian Operations segment includes the exploration for, development of, and production of natural gas oil and NGLs and other related activities within Canada. Its Canadian operations include Montney in northeast British Columbia and northwest Alberta and Duvernay in west central Alberta. The USA Operations include the exploration for, development of, and production of natural gas, oil and NGLs, and other related activities within the United States. The Market Optimization activities are primarily responsible for the sale of the Company's production to third party customers.