BP Exploration Alaska melaporkan tumpahan methanol dan produced fluids di lahan minyak Lisburne pada tanggal 16 Juli. Kira-kira 50-100 bbl dari methanol/produced fluid blend tumpah di atas gravel pad dan freshwater tundra pond, menurut perkiraan awal perusahaan. Lahan Lisburne adalah bagian dari unit Prudhoe Bay.
The spilled fluid includes some crude oil although the volume of spilled crude was not immediately available, the Alaska Department of Environmental Conservation (ADEC) said.
â€œDuring the Lisburne Production Center annual shut-in, an 8-in. test-header pipeline, with a 100-bbl potential capacity, released in an underground section at a roadway crossing at the L-1 drill site, the ADEC said. â€œThe pipeline is sleeved within a larger pipe structural casing through which the spilled fluids were released at each end. The failure of the pipeline occurred during a leak test intended to check newly install valves.â€
Pressure in the pipeline reached 949 psi before the leak, ADEC said. Spill responders put absorbent material and boom on the tundra. Vacuum trucks recovered 15 bbl of spilled liquids.
There was no ongoing production activity when the leak happened.