History
The company was founded on November 7, 1973, as AEX Minerals Corporation and adopted the present name in 1975.[6][7]
In 1998, the company sold land to Remington Energy for C$127.5 million.[8]
In 1999, the company and Penn West Petroleum (now Obsidian Energy) acquired the Canadian assets of BP Amoco.[9]
In 2000, the company acquired Ranger Oil for C$1.08 billion.[10][11][12]
In 2002, the company acquired Rio Alto for $2.4 billion.[13][14]
In February 2004, the company acquired Petrovera Resources, a joint venture between Encana and ConocoPhillips.[15]
In September 2006, the company acquired the Canadian operations of Anadarko Petroleum for US$4.1 billion.[16]
In April 2014, the company acquired the conventional assets in Canada of Devon Energy for C$3.125 billion.[17]
In 2017, the company acquired the Canadian oil sands assets of Royal Dutch Shell, including a 70% working interest in the Athabasca Oil Sands Project, for $5.3 billion in cash plus 97,560,975 shares. The shares were sold in 2018.[18][19]
In August 2018, the company acquired the idled Joslyn oil sands project from Total S.A. and its partners.[20]
In September 2018, the company acquired Laricina Energy for $46 million.[21]
In June 2019, the company acquired the remaining assets in Canada of Devon Energy.[22]
Incidents
Horizon tank farm collapse fatalities
In 2007, a tank that was under construction collapsed, killing two workers and seriously injuring two others.[23]
Primrose oil seeps
In June 2013, the Alberta Energy Regulator investigated reports of leaks in the company's Primrose East oil sands project. The regulator concluded that nearly a million litres of bitumen mixed with water had seeped into the ground around the site.[24][25]
Slave Lake pipeline spill
In April 2014, a pipeline owned by the company spilled 70,000 liters of oil and processed water northwest of
