The blocks are being operated by US supermajor ConocoPhillips.
It is an addition to the 12,500-square kilometre multi-client 3D shoot off Angola which has finished the acquisition stage.
TGS’s senior vice president for the eastern hemisphere Stein Ove Isaksen commented that Angola’s conjugate margin pre-salt basins were causing excitement because they offered potential opportunities similar to hydrocarbon-rich basins off Brazil.
The Geco Eagle is acquiring the seismic data to be processed by TGS and with preliminary data to be available from the fourth quarter of next year.
ConocoPhillips holds a 30% operatorship stake in both blocks awarded last December, with Angolan state player Sonangol on 50% and Chinese-Angolan venture China Sonangol International (CSI) on 20%.