A Gulf project’s price tag did not all stay on the coast

A piece of offshore equipment bought from a Gulf Coast dealer could send much of its purchase price elsewhere. In a June 2011 federal oil-services study, Eastern Research Group explained why the location of a sale was not enough to establish where the economic benefit occurred.

The researchers developed a way to divide offshore project costs among industries and places for the government’s economic modeling. Their starting point was to separate labor from purchases of goods and services. A total project budget combined these different kinds of spending, even though they did not follow the same route through the economy.

For equipment made outside the Gulf economic region and sold through a local dealer, the report assigned the local wholesale activity to the dealer’s margin—the difference between the producer’s price and the purchaser’s price. It did not treat the full equipment price as Gulf manufacturing output. The factory’s share belonged where the equipment was produced.

The report used two offshore platforms to make the distinction concrete. It described the hulls for Atlantis and Thunder Hawk as built in Korea and Singapore, respectively. In that example, hull fabrication took place outside the onshore Gulf economy, while joining a hull to its upper structure at a Gulf shipyard generated activity within it.

Labor required a separate calculation. The study divided labor costs into wages and benefits, then considered where workers and the associated spending belonged. Its proposed model treated wages associated with labor brought from outside the region as money leaving the Gulf economy, rather than automatically assigning those wages to local households.

The authors also defined an imported good by the boundary of the study region. Equipment arriving from another part of the United States counted as an import for this calculation, just as equipment arriving from overseas did.

These were the accounting choices in a 2011 Gulf study, not measured parish benefits from a current project. They explain a practical difference within the oil economy: selling equipment, manufacturing it and assembling it could support different places, even when all three appeared on the same project bill.