Ginko Oil Exploration and Delek Energy have a license, the carveout Tzuk Tamrur over 16,500 dunams, to explore for oil in this area of the Judean Desert where they believe there could be 6.5 million barrels of oil. Zerah was established in 2006 as a subsidiary of Ginko Oil Exploration Ltd. Zerah License (Ginko group and its partners Delek and Avner) received permission from the Israel Nature and Parks authority to start drilling at the Tzuk Tamrur 4 site at the beginning of October. The td of the drilling is planned for 2 km at an estimated cost of $4-5 million. The Zerah license covers an area of 400 sq km north of the Dead Sea. Drilling started on the 30th November 2009. The partners in the Tzuk Tamrur 4 license are Zerach (50%), Avner (25%) that are the operator and Delek 25%. On the 31st Jan 2010 Zuk Tamrur 4 partners (Zerach 50%, Avner and Delek 25% each) have decided to move to the stage of carrying out production testing at the site after the electric logs were found to be positive. Avner, the operator of the Tzuk Tamrur 4 has informed its partners that they have reached a td of 2,103 meters and will now carry out production testing at two different layers at the Ra’af and Gvanim. Production testing will take about a month and will cost $1.8 million