Israel's Delek Group said on Nov. 28 it has agreed to buy 17.5% of shares in a planned public offering by Ratio Petroleum on the Tel Aviv Stock Exchange, expected by the end of the year.

Ratio Petroleum is looking to raise a total of about 100 million Israeli new shekels (US$26 million).

Ratio Petroleum is controlled by the same controlling shareholders in Ratio Oil Exploration, which is a partner with Delek in the huge Leviathan natural gas field. (US$1 = 3.8611 shekels)