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The Three Graces: On Time, On Budget and on Station

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The Delta House semi-submersible FPS has an initial production capacity of 80,000 b/d of oil and 200 MMcf/d of gas. First oil was produced April 2015. Photograph courtesy of Audubon Engineering Solutions. The Three Graces: on Time, on Budget and on Station In 2010, a joint venture group of partners and their majority shareholder, LLOG Exploration Co. (LLOG), acquired approximately 20 deepwater leases in the Gulf of Mexico's Mississippi Canyon area. But there was a catch: drilling had to begin within 36 months or the leases would expire. So with the clock ticking, LLOG hired Audubon Engineering Solutions (topsides engineering contractor) and EXMAR Offshore (hull engineering contractor) to design a Floating Production System (FPS) to be ready to get production assets on station and ready for first oil. AVEVA PDMS helps Audubon Engineering Solutions deliver an offshore platform in record time In traditional oil & gas operations, after a discovery is made, delineation wells are drilled and a thorough examination of reservoir characteristics is conducted. Only after commercial viability has been established, does the process of FEED, bid tendering, detailed design, and construction begin. In the case of LLOG in the Mississippi Canyon area, time was not a luxury. So they decided to start work on the design of a production platform before a discovery had even been made. Normally, production platforms are tailored to the particular characteristics of a reservoir and the hydrocarbons it contains. However, with no detailed data available on either of these, the Delta House semi-submersible deepwater FPS would have to be able to operate with a wide range of reservoir types. The tight lease deadline, coupled with a greater return on investment (ROI) from quickly bringing the FPS online and moving on to other endeavours, was enough to convince LLOG that the benefits of this approach outweighed the disadvantages of employing a more generic platform design. And the strategy proved sound, with production beginning two to four years earlier than comparable conventional deepwater projects in the region. MAGAZINE AVEVA World Magazine Article Reprint 2015 | Issue 2

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