Anadarko Petroleum Corp. had first production at the Caesar/Tonga development in the Green Canyon area of the deepwater Gulf of Mexico. 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 Boe per day from the first three subsea wells. A fourth development well is expected to be drilled and completed later this year.
In addition to utilizing Anadarko’s 100% operated Constitution spar floating and production facility, the Caesar/Tonga development also included the first application of steel riser “lazy wave” technology in the Gulf of Mexico. The Constitution spar is located in Green Canyon on Block 680, in a water depth of 5,000 ft (1,524 m). In 2009, Anadarko began making modifications to the topsides of the Constitution facility to accommodate production from the Caesar/Tonga area, approximately 10 miles to the east.
Anadarko, operator of the Caesar/Tonga development, holds a 33.75% working interest. Partners in the development include Statoil Gulf of Mexico, with a 23.55% working interest; Shell Offshore Inc., with a 22.45% working interest; and Chevron U.S.A. Inc., with a 20.25% working interest.
