"Though they (union) said they have suspended the strike, they (workers) are still on the rigs but have not resumed work," company spokesman Guy Cantwell said.
"They are still blocking the helideck and have made transportation to the rigs by helicopter impossible," Cantwell said by phone from Houston.
He said the striking members of the blue collar oil workers National Union of Petroleum and Natural Gas Workers (NUPENG) were insisting on the recall of five terminated union executives.
NUPENG national executive said on Thursday it had instructed the local branch to end the strike on Tuesday night and could not immediately explain why the strikers were yet to resume.
The branch had embarked on the stoppage last week to protest disciplinary proceedings against some of its members.
The Houston company said the strike had disrupted drilling operations on four of its mobile offshore rigs off Nigeria.
Transocean Inc. is active mainly in the eastern Niger delta.
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