Shell Spill in North Sea – Radar Draws a Blank

Just got a radar satellite image from the European Space Agency (ESA) – it’s from their Envisat satellite, ASAR sensor. It was taken on August 13 over the North Sea, where Shell has been dealing with an oil spill from a pipeline near their Gannet Alpha platform.  At last report, Shell claims that they’ve spilled 67,000 gallons and that the failed pipe holds an additional 185,000 gallons, making this the worst spill in UK waters in ten years.

The leak apparently began on August 10, and was first reported on August 12.  We were hopeful this August 13 image would show the slick so we could estimate the size of this spill. But it’s a blank – monotonous gray, with some broad faint streaks running diagonally from north-northwest to south-southeast that suggest the North Sea was being blasted with very strong winds when this image was taken, rendering the image unusable for detecting oil slicks.  Bright spots around the Gannet Alpha marker show platforms and possibly large vessels; as big angular hunks of metal, both are excellent radar reflectors:

Overview showing radar satellite image and location of Gannet Alpha platform. Envisat ASAR image courtesy European Space Agency.
Detail showing radar image in vicinity of Gannet Alpha platform. Uniform, medium-gray tone of image indicates strong surface winds.  Bright spots are platforms or vessels.

We’ll keep looking for new images that might show what’s going on here.

Oil Spill at Shell Platform in North Sea

Shell has reported an oil spill at one of their platforms in the North Sea.  They haven’t disclosed the size of the spill; we’re looking for satellite imagery to see if we can learn more.

Map showing location of Shell’s Gannet Alpha platform, installed in 1993.

The Gannet Alpha platform, co-owned by Shell and Exxon, is located about 110 miles east of Aberdeen, Scotland, in water 95 meters deep.  We’re waiting for more details; from the news accounts of a leak in a “flow line” we surmise that one of the gathering lines in this field has failed.  Like Shell’s massive Perdido project in the deepwater Gulf of Mexico, multiple wells on the seafloor scattered throughout the area are tied back via gathering pipelines to the Gannett platform for processing.  Click here to see details about the Gannet field, pics of the structures, and a schematic diagram of the infrastructure.