Jan. 2010 - The Lucius sidetrack appraisal well, drilled by the ENSCO 8500 semisub, encountered almost 600 net feet (183 meters) of high quality oil pay with additional gas-condensate pay in thick subsalt Pliocene and Miocene sands. Drilled as an up-dip sidetrack roughly 3,200 feet (975 meters) south of the discovery well (which encountered more than 200 net feet [61 meters]) of pay, the appraisal well reached a total depth of 20,600 feet (6,279 meters) in 7,100 feet (2,165 meters) of water. Lucius' reservoir is characterized by excellent porosity and permeability and contains high-quality oil. Additional appraisal drilling is anticipated on the Lucius find in 2010. Located in the Gulf of Mexico on Keathley Canyon Block 875 in a water depth of 7,126 feet (2,172 meters) is the Lucius oil and gas field. Anadarko operates the field, holding a 50% interest; Co-owners in the discovery include Plains Exploration & Production with a 33.33% interest and Mariner Energy with 16.67% interest.

Dec. 2009 - Anadarko has made a discovery at their deepwater Lucius prospect in Keathly Canyon Block 875 in the Gulf of Mexico. The discovery well encountered more than 200 feet (61 meters) of net pay in subsalt Pliocene and Miocene sands. The discovery well was drilled to a total depth of about 20,000 feet (610 meters) by the Ensco 8500 ultra-deepwater semisubmersible. An up-dip sidetrack appraisal will be drilled on the same block, approximately 3,200 feet (975 meters) south of the discovery. Anadarko operates the Lucius well with a 50% working interest. Co-owners in the discovery include Plains Exploration & Production (33.33%) and Mariner Energy (16.67%).

Oct. 2009 - The ENSCO 8500, an ultra-deepwater semisubmersible, has spud an exploration well at Anadarko's Lucius prospect, located on Keathley Canyon Block 875 in a water depth of 7,110 feet (2,167 meters). Drilling is expected to take about 90 days. Anadarko operates this prospect with a 50% working interest and Devon holds the remaining 50% interest.

Sep. 2009 - Anadarko has filed an EP with the MMS for its Lucius prospect on Keathley Canyon block 875. Under this initial EP, the company proposes to drill and complete two wells, locations A & B in Keathley Canyon block 875.