KrisEnergy reports that the CGG Amadeus vessel has started a 570sq km 3D seismic acquisition campaign in Block 120 off-shore central Vietnam. Block 120 covers 6,869sq km overlying the Quang Ngai Graben and the Tri Ton Horst where water depths range from 50-650m (164-2,133ft). The graben connects the Song Hong and Qiongdongnan Basins in the north to the Phu Khanh Basin in the south.
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