EnCana has assembled a vast land position across North America's unconventional fairway, home to the company's 12 key resource plays.

North America's interior, the north-south expanse of the plains and grasslands running from the Gulf of Mexico to the Arctic, was not always a vast dry prairie or high plateau. Illustrated by the light blue in the map below, a massive seaway once bisected the continent. Over a 25-million-year period during the Cretaceous Period and ending about 65 million years ago, rivers and rainwater washed sediments downstream from the western highlands — today's Rocky Mountains — to settle in a series of enormous sedimentary basins. With time and climate changes, shorelines migrated across this shallow sea, rivers cut new courses and enormous tectonic events deposited rocks, silt and sand rich with the plants, sea life and vegetation that formed a storehouse of deeply buried organic material.

Layer upon layer of overburden generated massive pressures. In combination with geothermal heat extending over millions of years, these forces created hydrocarbons, the natural gas and oil that now fuel the Earth. Over more than three decades of operations, EnCana and its predecessor companies have assembled a vast land position across this unconventional fairway, home to the company's 12 key resource plays. From northeast British Columbia to east Texas, EnCana is profitably tapping and unlocking huge deposits of natural gas and bitumen on these resource play lands through the application of innovative technology, manufacturing methodology and unconventional thinking.