DCP Midstream Partners and Williams Partners are planning to expand the Discovery natural gas gathering pipeline in the deepwater Gulf of Mexico. A Keathley Canyon Connector will be constructed to gather production from the Keathley Canyon, Green Canyon and Walker Ridge areas. The subsea natural gas gathering pipeline will be 20in diameter and run 215mi, originating in the southeast portion of the Keathley Canyon to the Discovery’s mainline near South Timablier block 283. Construction is anticipated to begin in 2013 and expected to be in service mid-2014. Capital costs for the connector are estimated to be USD600 million. The pipeline will be able to gather more than 400MMcf/d of natural gas.