(Corrects to state potential for second deal, not first)
JERUSALEM, July 16 (Reuters) -
* Israel's Oil Refineries (ORL) said on Sunday it is in talks to by 17 billion cubic meters of natural gas from Greek exploration and production firm Energean.
* ORL, together with Israel Chemicals and OPC Rotem, are negotiating non-binding memorandums of understanding to buy gas supplies from Energean, ORL said in a statement to the Tel Aviv Stock Exchange.
* The deals would be the second for Energean for selling gas from the Tanin and Karish fields offshore Israel.
* ORL did not say how much it was hoping to pay in the deal, which could last up to 15 years.
* Israel Chemicals and ORL are subsidiaries of Israel Corp , while OPC Rotem is a unit of Kenon Holdings, which was spun off from Israel Corp. (Reporting by Ari Rabinovitch; Editing by Tova Cohen)