Chevron Australia completes onshore decommissioning works at Thevenard Island

Chevron Australia has successfully completed the onshore decommissioning works at Thevenard Island, the company announced on June 15.

The decommissioning process involved the plugging of 11 onshore production wells, 3 water disposal wells, 1 exploration well and the safe dismantling and removal of three 150,000-barrel oil storage tanks in addition to production tanks, separator vessels, flowlines, associated process infrastructure and ancillary accommodation facilities and utilities including the controlled toppling of the 38-m communications tower. In total, the project resulted in the removal of more than 5,000 metric tons of scrap metal from the island for recycling.   

Thevenard Island, which has been home to the Chevron-operated Thevenard Island Joint Venture oil and gas facility since the late 1960s, produced approximately 150 million barrels of oil over its 25-year lifespan until production ceased in 2014. Once the area is restored to a condition compatible with the adjacent environment, it will be returned to the Western Australian government.