KIEV, March 20 - UkrNafta, Ukraine??™s largest oil producer, on Tuesday postponed for 10 days decision on shutting down more than 1,000 oil wells that had become unprofitable due to a royalty hike, the company announced.

This is the second time that UkrNafta postpones the decision over the past week underscoring the government??™s concerns that the shutdown would cause problems with domestic oil supplies.