[2] In October 2004, EnCana sold its UK unit, including a 43% stake in the Buzzard field (discovered in 2001 by a PanCanadian-led group), to Nexen for $2.1bn US.

[13] In November 2011, a potential buyer backed out of a $45 million deal to buy the company's gas field in Pavillion, Wyoming.

[15] In February 2012, Mitsubishi paid approximately C$2.9 billion for a 40% interest in the Cutbank Ridge Partnership with Encana, which involves 409,000 net acres of Montney Formation natural gas lands in northeast British Columbia.

[22] In August 2015, the company sold its assets in the Haynesville Shale for $850 million to affiliates of GSO Capital Partners and GeoSouthern Energy.

The Deep Panuke project produced and processed natural gas 250 kilometers offshore southeast of Halifax, Nova Scotia.

[2] From 2008 through 2010, the company accumulated 250,000 net acres in the Collingwood-Utica Shale gas play in the Middle Ordovician Collingwood formation of the Michigan Basin at an average cost of $150/acre.

[42] In 2013, two property owners adjacent to a drilling unit filed suit against the Michigan Department of Environmental Quality (DEQ) and Encana for potential harm due to proximity.

[46] In spring 2008, residents from Pavillion, Wyoming, approached the United States Environmental Protection Agency (EPA) about changes in water quality from their domestic wells.

[50] Issues were raised for the Deep Panuke project offshore of Nova Scotia, when it was proposed in 2006 as a smaller version with increased ocean discharges and when Encana asked for a "streamlined regulatory process" without public hearings.

[51] In British Columbia, between 2007 and 2019, Ovintiv was charged for breaching provincial legislation 19 times, more than any other company, as well as being fined the highest amount.