Woodside Petroleum says an oil spill off the coast of Western
Australia, which was kept secret by the offshore regulator for
more than a year, has not caused lasting damage to the
The oil and gas giant said it reported the leak from a well in
the Cossack field on the North West Shelf to the National
Offshore Petroleum Safety and Environmental Management
Authority (NOPSEMA) in April 2016.
But the leak was not disclosed until this week when NOPSEMA
referenced the 10,500-litre spill in its annual offshore
performance report without naming the operator or location.
In a statement to the ABC, a spokesperson for Woodside said the
company estimated the leak continued for 60 days at a maximum
rate of about 175 litres per day, and was the result of a “seal
degrading on a subsea hydraulic valve control line”.
The company insisted no environmental damage was caused.
“Due to the composition of the fluid, small quantity released,
water depth at release site and distance from environmentally
sensitive areas, there was no lasting impact to the
environment,” the statement said.
“We remain a committed, responsible and prudent operator and
continue to adhere to transparent reporting and high standards
of operations that have characterised our history.”