Sep. 2010 - The Droshky development has ramped up production to about 45,000 net barrels of oil equivalent per day, consisting of approximately 39,000 barrels per day of liquid hydrocarbons and 39 MMcf/d of natural gas. The satellite development consists of four wells tied-back to the third-party Bullwinkle platform. According to Marathon, three of the four wells are currently producing at better-than-projected levels, while production from the fourth well was delayed due to an equipment issue. In the first quarter of 2011, Marathon plans to re-enter the fourth well to make necessary repairs. The field is now expected to produce at a peak rate of about 45,000 net boepd, down from the original rate of 50,000 net boepd. Located on Green Canyon Block 244 in deepwater Gulf of Mexico, Droshky is situated in 2,900 feet (884 meters) of water about 137 miles (220 kilometers) southwest of Venice, Louisiana.

Jul. 2010 - Production has commenced from Droshky, and the oil and gas field is expected to produce about 50,000 bopd at its peak, consisting of nearly 45,000 barrels per day of liquid hydrocarbons and 30 MMcf/d. Droshky was developed as a subsea tie-back consisting of four wells connecting to the third-party Bullwinkle platform by dual, 18-mile (29-kilometer) flowlines. At a final development cost of US $900 million, the initial stage of development is expected to produce 35 million of the estimated 60-million boe net resource. Future expansion of the project and ultimate total recovery largely depends upon well performance. At year-end 2009, Droshky held about 26 MMboe of proved reserves. Located on Green Canyon Block 244 in deepwater Gulf of Mexico, Droshky is situated in 2,900 feet (884 meters) of water about 137 miles (220 kilometers) southwest of Venice, Louisiana. Marathon wholly owns and operates the Droshky field.

Feb. 2010 - Superior Energy Services obtained ownership of Shell's GOM Bullwinkle platform and related assets. Superior will plug and abandon 29 wells associated with Bullwinkle, and decommission the platform at the end of its economic life - Shell will compensate Superior upon successful decommissioning (amount undisclosed). Superior has sold a 49% interest in the assets to Dynamic Offshore Resources, LLC, which will now serve as the operator of the field. Installed in 1988, Bullwinkle is the deepest fixed-leg production platform on the Outer Continental Shelf, producing roughly 4,000 boep/d and serving as a processing hub for third parties. Located 150 miles southwest of New Orleans in the Gulf of Mexico on Green Canyon Block 65 in 1,353 feet (412 meters) of water is the Bullwinkle field, which currently processes 20,000 boep/d from four subsea fields. In mid-2010, an additional oil and gas field is expected to commence production through the hub.

Nov. 2009 - Marathon continues to make progress on well completions for its Droshky development on Green Canyon Block 244. Flowlines are currently being installed and will tie-back Droshky to a third-party operated Bullwinkle platform. First production is targeted for mid-2010. Marathon wholly owns and operates the Droshky field.

Aug. 2009 - Marathon provided an update on the Droshky development project in its second quarter 2009 results. The company completed drilling of all four development wells on the Droshky field, located on Green Canyon Block 244, and well completions are under way. First production is targeted for 2010. Marathon wholly owns and operates Droshky.

Feb. 2009 - The Noble Paul Romano semisub rig is currently on location at the Droshky field, Green Canyon Block 244 drilling a development well. According to RigLogix drilling commenced February 15, 2009.

Feb. 2009 - The Noble Paul Romano is slated to drill a development well on Marathon's Droshky field, Green Canyon 244. RigLogix shows a tentative start date of February 15, 2009.

Jan. 2009 - According to RigLogix, the Noble Paul Romano is scheduled to drill a development well on the Droshky field, Green Canyon 244, which is currently under development. First production is targeted for 2010.

Dec. 2008 - Shell reports that its Bullwinkle facility still has ongoing repairs. Repair work should be completed by the then of March 2009.

Oct. 2008 - Marathon's Board of Directors has sanctioned the deepwater Gulf of Mexico, Droshky development project. The Board approved a total project cost of $1.3 billion for the development. The Droshky discovery located in approximately 2,900 feet of water in Green Canyon block 244 will consist of four development wells, which will tie-back to Shell's Bullwinkle platform. Marathon has secured the Noble Paul Romano rig to begin drilling in 2009, and first production targeted for 2010.

Sep. 2008 - Nexen says that the Aspen field on Green Canyon block 243 remains shut-in due to damage to third-party host facilities. Production is expected to recommence this year but timing is uncertain.

Aug. 2008 - Subsea 7 won the first contract for its new fabrication and spoolbase facility at Port Isabel, Texas. The subsea pipelay fabrication and installation contract was awarded by Marathon and is valued at $45 million. The supply agreement is part of Marathon's previously disclosed procurement activities related to long lead time items associated with the Company’s Droshky discovery in the Gulf of Mexico. Marathon anticipates sanctioning the Droshky development in the fourth quarter of this year.

Jun. 2008 - Marathon Oil Corporation has exercised a two-year option extension on its contract for the Noble Jim Day drilling rig, expected to commence drilling operations in the deepwater Gulf of Mexico in the first quarter of 2010. Marathon currently has two rigs under contract in the Gulf, with plans to drill about three significant exploration wells a year through 2010, along with a number of development wells associated with the Droshky discovery, which is expected to be sanctioned later this year. Marathon holds a 100 percent working interest in the Droshky discovery located on Green Canyon Block 244.

May. 2008 - Marathon reported a successful appraisal well on GC244 which encountered additional deeper pay intervals. The appraisal was sidetracked to help assess reservoir connectivity and gather core and fluid info. The well has been cased for future completion / production.

Mar. 2008 - Marathon says Droshky is slated for sanction in 2008 and is targeting production start-up in 2010-2011.

Mar. 2008 - Shell Exploration & Production US have placed an order with ProAnalysis AS for an Argus Oil in Water monitor to be installed at the Bullwinkle platform south of Louisiana, USA. The order represents the first installation of ProAnalysis' Argus technology in the Gulf of Mexico.

May. 2007 - Marathon Oil has successfully completed the appraisal of the previously announced Droshky discovery on Green Canyon Block 244 (OCS-G 11043) in the Gulf of Mexico.

Apr. 2007 - Marathon Oil said a new deepwater discovery well in the Green Canyon region of the Gulf of Mexico had struck oil.

Dec. 2002 - Nexen has acquired the residual 40% interest in the Aspen field and the remaining interests in five exploration blocks in the greater Aspen area from BP Exploration and Production Inc. for US $136 million. Aspen is located in 3,150 feet of water on Green Canyon Block 243. This acquisition increases our interest in Aspen to 100%, and increases our exploration acreage in the greater Aspen area to over 80,000 net acres. The acquisition has an effective date of January 1, 2003.

Feb. 2002 - BP announced an agreement with Nexen Petroleum USA Inc. that will bring BP's Aspen discovery into production by the end of this year.

Sep. 2001 - Shell Exploration & Production Company (SEPCo) announced plans to develop Manatee, a subsea production system located in the Gulf of Mexico in 1,940 feet of water. Manatee will be a two-well development located approximately 160 miles southwest of New Orleans in Green Canyon Block 155. It will tie back five miles to Shell's Angus subsea manifold in Green Canyon 113, which carries production 17 miles to Shell's Bullwinkle platform in Green Canyon 65 for processing.

Apr. 2001 - BP announced a major discovery at its Aspen field, located approximately 150 miles south-southwest of New Orleans, La., in the Green Canyon region of the Gulf of Mexico. The discovery adds to an extensive portfolio of deepwater assets BP has in the Gulf.

Jan. 1998 - The Ocean Saratoga drilled the first two development wells in Green Canyon 113 in 1998. The Diamond Worker drilled the third well and completed all three wells.