text: Initial CO injection rates in the Weyburn field amounted to ~5,000 tonnes/day or 95 million scf/day (2.7 million m3/d); this would otherwise have been vented to the atmosphere from the Dakota Gasification facility. At one point, CO injection by Cenovus at Weyburn was at ~6,500 tonnes per day.  Apache Canada is injecting approximately 1,500 tonnes/day into the Midale field.
  Overall, it is anticipated that some 40 Mt of carbon dioxide will be permanently sequestered over the lifespan of the project in the Weyburn and Midale fields. The gas is being supplied via a 320 kilometre mile long pipeline (completed in 1999) from the lignite-fired Dakota Gasification Company synfuels plant site in Beulah, North Dakota (See attached image). The company is a subsidiary of Basin Electric Power Co-operative. At the plant, CO is produced from a Rectisol unit in the gas cleanup train. The CO project adds about $30 million of gross revenue to the gasification plant's cash flow each year.   Approximately 8000 tonnes/day of compressed CO (in liquid form) is provided to the Weyburn and Midale fields via the pipeline.
  During its life, the Weyburn and Midale fields combined are expected to produce at least 220 million additional barrels of incremental oil, through miscible or near-miscible displacement with CO, from a fields that have already produced over  since discovery in 1954. This will extend the life of the Weyburn field by approximately 20–25 years. It is estimated that ultimate oil recovery will increase to 34% of the oil-in-place. It has been estimated that, on a full life-cycle basis, the oil produced at Weyburn by CO EOR will release only two-thirds as much CO to the atmosphere compared to oil produced using conventional technology.
  This is the first instance of cross-border transfer of CO from the US to Canada and highlights the ability for international cooperation with GHG mitigation technologies. Whilst there are emissions trading projects being developed within countries such as Canada, the Weyburn project is essentially the first international project where physical quantities of CO are being sold commercially for enhanced oil recovery, with the added benefit of carbon sequestration.