Mar. 2012 - Anadarko commenced production at the Caesar/Tonga joint development in the Green Canyon area of the deepwater GOM on March 7, 2012. Production from Caesar/Tonga, with an estimated resource base of 200 to 400 million barrels of oil equivalent (boe), is expected to ramp up to approximately 45,000 boepd from the first three subsea wells. A fourth development well is expected to be drilled and completed later this year, as part of the planned phase I development. The subsea satellite wells are tied-back to the Constitution Spar floating production facility.

Jan. 2011 - Anadarko announced that a mechanical issue involving the production riser system at the Caesar/Tonga project in the Gulf of Mexico will delay first production, which was expected in mid-2011. Recently, the production riser system underwent an extensive qualification program prior to installation, but Anadarko's recent hydro testing of the riser provided results that preclude it from being put into service. Anadarko plans to continue the completion activities as they work with the co-owners to secure a reliable alternative for the production riser. Caesar Tonga is a joint development project that began in early 2007 as a subsea tie-back to the Constitution Spar facility.

Mar. 2010 - Anadarko submitted a DOCD to MMS to further develop the Caesar-Tonga project. Under the DOCD, Anadarko will place four wells on production and install right-of-way and lease term pipelines. The work performed will take place on Green Canyon Blocks 683, 726 and 770. Caesar Tonga is a joint development project that began in early 2007 as a subsea tie-back to the Constitution Spar facility. First oil from the project is targeted for early 2011.

Nov. 2009 - Anadarko reported that it is assessing its facilities and anticipate returning personnel to operated platforms later today and tomorrow. The company will begin ramping up production as soon as it is safe to do so. Independence Hub, Constitution, Marco Polo and Neptune in the Gulf of Mexico were all shut in and evacuated late Sunday as a safety precaution due to Ida, which is now a tropical depression.

Nov. 2009 - Technip awarded Aspen Aerogels a contract to provide its Spaceloft aerogel thermal insulation for the Caesar-Tonga subsea tie-back to the Constitution Spar in the Gulf of Mexico. Caesar-Tonga is located in the Green Canyon area and the field development consists of two pipe-in-pipe insulated oil flowlines connected to two insulated flexible risers that originate from the spar. First oil is targeted for early 2011 via the Constitution Spar facility at Green Canyon Block 680.

Nov. 2009 - Anadarko awarded an engineering, construction and installation contract to Subsea 7 for development of the Caesar/Tonga complex located in approximately 4,500 feet (1,372 meters) of water, roughly 160 miles (257 kilometers) south of Houma, La. Scheduled for start up in 2H 2010, the Subsea 7 workscope is to design, fabricate and install (using its pipelay and construction vessels) two manifolds and two riser base pipeline end manifolds, transport and install two flexible risers and to fabricate and install 10 jumpers, two main umbilicals and associated flying leads.

Nov. 2009 - Anadarko reports that its Caesar/Tong development project is on schedule. The GC683 No. 1 well is currently being drilled as an updip sidetrack to the original Caesar discovery well. Subsea construction is underway with first oil targeted for early 2011.

Oct. 2009 - The Noble Amos Runner semisub rig is slated to drill a development well at the Caesar development field, located on Green Canyon Block 683. Caesar is currently being developed as a subsea tie-back to the Constitution Spar, located on Green Canyon Block 680.

Aug. 2009 - Anadarko reports that construction activities began on the Constitution spar to prepare for the tie-back of the Caesar/Tonga field. Production handling agreements were approved by Anadarko and its partners. Preparations are under way to drill two wells (GC726 #1 and GC683 #1 sidetrack) and run casing to prepare them for production. Anadarko expects to begin this program during the 3rd quarter of 2009.

Jul. 2009 - The Noble Amos Runner is slated to drill an appraisal well at Green Canyon block 726 on the Tonga West field. Tonga West is currently under development and is expected to start production as early as 2010.

Jul. 2009 - Technip was awarded two lump sum contracts by Anadarko Petroleum Corporation as Unit Operator for the Caesar/Tonga oil field development in the Gulf of Mexico. This field spans Green Canyon Blocks 683, 726, 727 and 770, in water depths of around 1,500 meters (5,100 feet), and it will be tied-back to the Constitution Spar platform. The first contract covers the design and supply of the components for four pipe-in-pipe flowlines and the installation of these flowlines, representing a total of 27 miles (43 kilometers). The second contract covers the project management, engineering and fabrication of two control umbilicals and their termination hardware.

Apr. 2009 - The Anadarko-operated Caesar Tonga development consists of three discoveries, Tonga, Tonga West and Caesar. The three fields were combined into one project to be developed as a subsea tie-back to the Anadarko-operated Constitution Spar. The initial phase of development will consist of four wells with a combined average production of 40,000 bopd with first oil expected in 2011. StatoilHydro, Shell and Chevron also partner on the project.

Feb. 2009 - Anadarko has reported in its 4Q Operations Report that the Constitution Spar is expected to be restored to full production by the end of 1Q 2009. The Constitution Spar was shut in for repairs after sustaining damage from Hurricane Ike. Third-party downstream infrustructures were also damanged and repairs on it is expected to be completed by the end of the quarter as well.

Feb. 2009 - Anadarko announced success on Green Canyon 770 #1 appraisal well. The well was temporarily abandoned and will be used as a future producer. Anadarko continued with development activities at its Caesar/Tonga Complex in the 4th quarter 2008. Construction is underway at the Constitution spar to reduce future downtime when the subsea tieback is installed.

Sep. 2008 - Anadarko reports that the Constitution SPAR facility in the western Gulf of Mexico on Green Canyon block 680 is currently undgoing repairs due to minor surface damage. Production is expected to restored as quickly and safely as possible, and as pipelines and infrastructure permit. The Constitution SPAR facility serves as a hub for the Constitution field, Ticonderoga field and the currently under development, Caesar field.

May. 2008 - Development on the Caesar / Tonga complex are still underway. Detailed reservoir simulation and subsea concept-validation work occurred in the 1st qtr. Unitization discussions were initiated with agreement that a phase development to the Constitution spar is the preferred option.

Apr. 2008 - Connection of GC768 #3 & #1ST4 wells to the Constitution facility is currently in progress. These wells were brought online in the 1st quarter of 2008.

Mar. 2008 - Anadarko Petroleum announced that it expects to sanction and begin booking reserves associated with two of its substantial deepwater discoveries -- the Jubilee field offshore Ghana and Tonga West in the Gulf of Mexico -- in 2008. Anadarko anticipates each field to begin production as early as 2010.

Dec. 2007 - Anadarko has made an oil discovery at its West Tonga prospect on Green Canyon block 726 in the deepwater Gulf of Mexico.

Nov. 2007 - The Caesar partnership formed an Integrated Project Team to study the development of the Caesar-Tonga discoveries as subsea tie-backs to the Constitution spar. The team is conducting studies to define the requirement of the subsea system for producing high-pressure oil and is creating subsurface models to optimize efficient recovery of both oil and gas. These studies will define the development plan for the field. Full project sanction is anticipated by the second half of 2008.

Nov. 2006 - The transaction with Chevron involves a swap of Anadarko's interests in the Mackenzie Delta, Beaufort Sea and Yukon areas in return for an incremental 12.5 percent working interest in seven deepwater Gulf of Mexico blocks encompassing the Tonga discovery, as well as enhanced terms within the companies' recently announced west Texas exploration joint venture. Anadarko, which currently is drilling an offset well to the Tonga discovery, now has a 37.5 percent working interest and intends to accelerate development of the field, potentially as a tie-back to the company's 100 percent owned Constitution production facility.

Jul. 2006 - Kerr-McGee has made another discovery in the deepwater Gulf of Mexico at the Caesar prospect. The Caesar #1 well, located in Green Canyon block 683 was drilled to a total depth of 29,721 feet and encountered quality oil pay. The Caesar discovery follows Kerr-McGee's recent announcement of a natural gas discovery at the deepwater Claymore prospect in Atwater Valley block 140.

Apr. 2006 - Enterprise Products Partners said Wednesday that it has received initial flows of crude oil and natural gas into its Constitution oil and natural gas pipelines from the Constitution and Ticonderoga fields in the Gulf of Mexico.

Mar. 2006 - Kerr-McGee reports that its 100%-owned Constitution field in the deepwater Gulf of Mexico achieved initial production on March 27, 2006 from the field's first dry-tree well.

Mar. 2006 - Kerr-McGee reports that its 100%-owned Constitution field in the deepwater Gulf of Mexico achieved initial production on March 27, 2006 from the field's first dry-tree well.

Feb. 2006 - Kerr-McGee says the Ticonderoga field in the deepwater Gulf of Mexico achieved first production on Feb. 16, nearly two months ahead of schedule. Ticonderoga, located on Green Canyon block 768 in 5,250 feet of water, consists of two subsea wells tied back to Kerr-McGee's 100%-owned Constitution spar located on Green Canyon block 680. Kerr-McGee operates Ticonderoga with a 50% working interest. Noble Energy owns the remaining 50% working interest.

Aug. 2005 - Anadarko Petroleum has signed an agreement with Chevron to participate in drilling four deepwater Gulf of Mexico prospects. Under this agreement, Anadarko will pay a disproportionate share of the drilling costs to earn a 20 to 25 percent working interest in two appraisal wells and two exploration wells scheduled to be completed by mid-year 2006. Anadarko will also gain rights in 29 deepwater Gulf of Mexico.

Jan. 2005 - Technip has been awarded the Ticonderoga subsea flowline installation contract by Kerr-McGee Oil. The Ticonderoga production will be tied back to Kerr-McGee's 100% owned Constitution Spar.

Jul. 2004 - Cameron Highway Oil Pipeline Company has executed an agreement with Kerr-McGee, for the dedication and movement of crude oil production from the Constitution and Ticonderoga fields, along with other future potential production from several undeveloped blocks in the south Green Canyon area of the deepwater trend of the Gulf of Mexico.

Apr. 2004 - Kerr-McGee continues its success in the deepwater Gulf of Mexico with the Ticonderoga discovery well and initial sidetrack which encountered more than 250 feet of net high-quality hydrocarbon pay, primarily oil, in three zones. Kerr-McGee estimates that Ticonderoga, located on Green Canyon Block 768 in approximately 5,250 feet of water, offers potential resources of 30 million to 50 million barrels of oil equivalent. Operated by Kerr-McGee with 50% interest, Ticonderoga could be developed as a subsea tieback to the company's 100%-owned Constitution truss spar facility that will be located five miles to the north. Noble Energy owns the remaining 50% interest.

Mar. 2004 - Mustang Engineering has been selected by Kerr-McGee to provide engineering, procurement services and project management assistance for the topsides production facility on a truss spar for its recently announced Constitution field.

Feb. 2004 - Technip has been awarded a contract by Kerr-McGee for the engineering and construction of a spar floating production platform hull and the engineering and delivery of the associated moorings and production riser system for the Constitution field in the Gulf of Mexico.

Feb. 2004 - Gulf Island Fabrication has executed a Letter of Intent with Kerr-McGee Oil & Gas Corp. to fabricate the topside for the Constitution truss spar platform.

Jan. 2004 - Kerr-McGee will develop its Constitution Field utilizing a truss spar faciilty. The field is located in the Gulf of Mexico in Green Canyon Blocks 679 and 680 in approximately 5,000 feet of water.

Dec. 2003 - Schlumberger Oilfield Services and ChevronTexaco have set new measurement-while-drilling (MWD) and logging-while-drilling (LWD) depth and pressure records for the Gulf of Mexico. These results were recorded while drilling the ChevronTexaco deepwater Tonga Exploratory Prospect located in Green Canyon Block 727.

Apr. 2003 - Kerr-McGee reports that recent appraisal drilling has confirmed the Constitution field in the deepwater Gulf of Mexico. Constitution, located in 5,000 feet of water on Green Canyon block 680, was drilled by the semisub, Noble Amos Runner, and is owned 100% by Kerr-McGee.