Obsidian Energy Ltd. (previously known as Penn West Petroleum Ltd.) is a mid-sized Canadian oil and natural gas production company that operates in Alberta, focusing on the Pembina Cardium, Peace River oil sands, and Alberta Viking regions. The company underwent significant restructuring in response to falling crude oil prices in 2014, leading to a name change to Obsidian Energy in 2017. Obsidian Energy's production primarily consists of gas, with plans for continued growth and target production levels in the following years.