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				Producers are struggling with low oil prices and an oversupplied 
				market but have been loath to cede market share by cutting 
				output.
 Instead, OPEC members Saudi Arabia, Qatar and Venezuela reached 
				a preliminary agreement with Russia in February to freeze 
				production at January levels.
 
 They will seek backing for that deal from other producers at 
				Sunday's meeting in Doha, Qatar.
 
 Iran's oil minister had not been scheduled to attend, but Tehran 
				was due to send Iran OPEC Governor Hossein Kazempour Ardebilli, 
				oil ministry news agency Shana reported on Friday.
 
 Sources told Reuters that Iran had been informed that only those 
				countries willing to agree to freeze their output level should 
				attend.
 
 Iran has said it supports the freeze but would not join it until 
				it raises its output and market share to their pre-sanctions 
				levels.
 
 Sanctions imposed by the United States and other world powers 
				were lifted in January in return for Tehran agreeing to 
				long-term curbs on its nuclear program.
 
 A rise in Iran's oil output will undermine efforts to rebalance 
				the market in 2016, a Reuters poll of oil analysts showed this 
				week.
 
 Its production has already surpassed 3.5 million barrels per day 
				(bpd) and exports are set to reach 2 million bpd next month, 
				Iran's deputy oil minister was quoted as saying by state news 
				agency IRNA on Saturday.
 
 (Reporting by Reuters OPEC team; Editing by Jason Neely and Mark 
				Potter)
 
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