At EnCana, key resource plays capture huge accumulations of hydrocarbons trapped in unconventional reservoirs. For natural gas this means they must be of the size to be able to ultimately recover greater than one trillion cubic feet of reserves and to grow to more than 200 million cubic feet per day (MMcf/d) of long-life production.

In 2006, our nine key natural gas resource plays together produced an average of 2,397 MMcf/d, or 71 percent of our North American gas sales and accounted for approximately 79 percent of our proved natural gas reserves at year end.

In 2006, our three key crude oil resource plays together produced an average of approximately 67 thousand barrels per day (Mbbls/d), or 51 percent of our North American oil sales and accounted for approximately 80 percent of our North American proved oil and NGLs reserves at year end.