Esso Exploration Angola Limited (EEAL) has realized substantial improvements in the efficiency of subsea operations in the deepwater environment of Angola Block 15 (AB15). EEAL has increased its efforts to improve efficiencies for subsea operations, specifically during simultaneous operations. Improvements in efficiency and schedule certainty were realized as a result of dedicating a work vessel primarily to subsea operations. The full-length paper presents case histories of various operations and discusses the effect on efficiency of a dedicated work vessel.
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