Experience high oil supply from this city? (7)
I believe the answer is:
tripoli
'this city?' is the definition.
(Tripoli is an example)
'experience high oil supply' is the wordplay.
'experience high' becomes 'trip' (to trip is to experience a drugs high).
'supply' indicates anagramming the letters (in a supple way).
'oil' with letters rearranged gives 'oli'.
'trip'+'oli'='TRIPOLI'
'from' is the link.
(Other definitions for tripoli that I've seen before include "North African capital" , "Polish" , "Lebanese port" , "Libyan city" , "powdery deposit" .)