Specialty of Red Adair ruined old Sir Lewis Teal? (3,4,8)

I believe the answer is:

oil well disaster

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'specialty of red adair' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'ruined old sir lewis teal?' is the wordplay.
'ruined' indicates an anagram.
'old'+'sir'+'lewis'+'teal'='oldsirlewisteal'
'oldsirlewisteal' anagrammed gives 'OIL WELL DISASTER'.

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I've seen this clue in the Sydney Morning Herald.

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