According to official reports in late-August 2018, Echo Energy has signed a Letter of Intent (LOI) with Bolivian state company YPFB for a new Technical Evaluation Agreement (TEA) for the purpose of continuing its study on the Rio Salado block. Planned future activities include geological surveys, seismic acquisitions, and the drilling of exploratory wells with objectives in the Huamampampa, Icla and Santa Rosa formations.    Rio Salado block covers 522 sq km block is located in the Sub-Andean Zone of Chaco Basin on the Tarija Department.  The block is situated around Pluspetrolâs Campo Huayco block where the Huayco X1 gas and condensate discovery from 1982 is located. It is also directly adjacent to Shellâs Huacareta block on the western side where the operator is currently drilling the Jaguar X6 NFW to investigate the Huamampampa Formation, and next to Repsolâs Caipipendi block on its eastern side where the mega gas field of Margarita-Huacaya is located.  Background Information    Echo Energy originally signed a TEA for the block with partners Pluspetrol and Shell in July 2017, although it is unclear at this point if the latter two will continue to be involved in the new agreement.
Bolivia (Maturin Sub-basin (East Venezuela B.)) Santa Rosa