Inpex has announced that its Iwaki gas field in Japan will be decommissioned at the end of the year.

Production facilities at the field are expected to undergo decommissioning later this year.

Inpex said that the Japanese gas field was generating gas via an offshore platform and production was halted in July 2007, 23 years after it initially came on stream.

Nippon Steel awarded a subcontract to SapuraAcergy for the decommissioning work, which includes the platform and a 12in gas export pipeline in 150m of water.

In November, the derrick lay barge Sapura 3000 is scheduled to sail for Iwaki.