Page 94: of Offshore Engineer Magazine (Sep/Oct 2014)
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secondary fractured carbonates
A replacement guide base has of the Ketatna formation.
been installed, and drilling is
Awarded in 2009, the Mahdia expected to continue on to the permit covers a 3780sq km area well’s primary and secondary tar- near the Nabeul permit to the gets at 1260m and 1460m depth. north and Lampedusa Island to Circle Oil also holds 23% work- the east. It is adjacent to com- ing interest in the Ras Marmour
Mediterranean mercial oil? elds such as Tazerka, permit in southeast Tunisia,
Birsa, Oudna, Halk El Menzel which includes both onshore and and Isis. Both 2D and 3D seismic offshore prospects covering Djerba surveys have been conducted Island and a portion of the Gulf on the permit area in 2009 and of Gabes. Its partner in the permit 2013, respectively. Circle Oil is Tunisia’s Exxoil Ltd. (77% WI).
says that there are several classic The permit is near the offshore tilted fault block structures that El Biban oil and gas ? eld that was could provide traps for both sand discovered by Marathon Oil in or carbonate reservoirs, one of 1982 (Marathon later sold all its which is a target for the EMD-1 Tunisian interests in 1996). Circle well. Oil says the main reservoir in the
As of 31 July, Circle Oil
El Biban ? eld is composed of frac- had drilled the EMD-1 well tured limestones from the Bireno to 753m measured depth. The formation of Middle to Early company ran 20-in. casing
Turonian age.
and successfully cemented the
Cooper Energy is another well. However, after it ran the explorer offshore Tunisia, hold- blowout preventer and riser, ing interest in the Bargou, mechanical problems resulted in
Hammamet and Nabeul permits damage to the permanent guide with 30%, 35%, and 85% interest, base that was irreparable. respectively.
Image from ETAP.
The right propulsion for every ofshore situation.
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