Natural gas liquid capture to reduce emissions

Corporate Responsibility

Natural gas liquid capture to reduce emissions

A key priority of Canadian Natural’s operational responsibility is a commitment to environmental excellence. One of the ways we demonstrate this commitment at Horizon is through our partnership with Williams Energy Canada, to capture the off-gas (natural gas liquids and olefins) produced at the upgrader.

This project helps us reduce greenhouse gas (GHG) and sulphur dioxide (SO2) emissions from our operations. In 2016, we avoided almost 95,000 tonnes of CO2 . We are targeting a reduction of approximately 200,000 tonnes of CO2 emissions and 2,000 tonnes of SO2 per year, following Horizon’s expansion to 250,000 barrels per day in 2017.

The plant captures and further processes the off-gas, extracting the natural gas liquids (NGLs) including propane, butane and condensate, and the olefins propylene, butylene and olefinic condensate, from the off-gas. These NGLs and olefins are transported via pipeline to Inter Pipeline’s Redwater facility. The remaining gas, now cleaner, is sent back to our upgrader to be mixed back in with natural gas, which is then used as fuel. At the end of this process, Canadian Natural has a cleaner burning fuel source and lower overall emissions.

The project involved early consultation with the Athabasca Chipewyan First Nation, Fort McKay First Nation and Mikisew Cree First Nation, demonstrating cooperation between industry and community partners who are committed to the reduction of GHG emissions.

The Williams Liquids Extraction Plant at Horizon