Echo Energy plc, the Latin American focused upstream oil and gas company, said it has successfully completed drilling an exploration well at its Laguna Los Capones asset onshore Argentina.
The ELA-1 well reached a total depth of 1,820m in the Upper Jurassic Tobifera formation. Wireline log evaluation has been completed and a final production casing run, prior to suspending the well for possible testing and/or sidetrack, the company said in a statement.
In the deeper Tobifera volcaniclastic target, the well encountered elevated gas shows of C1 through C4 hydrocarbon indicators across an interval of approximately 40 metres in addition to some oil staining. This section is evaluated as being a thinly bedded sequence of oil pay intervals, with around 8m of net pay currently interpreted across that section.
"The interpretation of oil in the Tobifera at this location is exciting and suggests the ability of that formation to generate hydrocarbons in situ as is seen in the nearby Laguna Maria field which has been on production since 2016,” said Fiona MacAulay, chief executive officer of Echo. “If testing determines that this section can support commercial flowrates, the well can be quickly brought into production. Whilst the Springhill reservoir had only a limited interval of gas shows at this location, the extent and quality of the Springhill reservoir on the flanks of the structural high, is likely to indicate that the reservoir may unusually extend across the top of the structure with the potential of pay at a higher level.”
Echo Energy said that usual to the basin, the determination of effectiveness of pay from the wireline log analyses is complicated due to the complex mineralogy of the volcanic reservoir, and the current workflow is to determine the potential for testing this section when the test rig is on the licence. If testing proves to be successful the well could be brought into production quickly.
Following completion of this phase of the operation on the ELA-1, the rig will move directly to the third prospect in the company's four well exploration progamme, El Molino Sur, located on the Fracción C asset and to the south of the current well location, the company said.
“The performance of both the rig and crew has been excellent leading to a lower than anticipated Capex spend on this well which could therefore be allocated to an updip location at a later date,” MacAulay added.
This block is operated by Companı̃á General de Combustibles S.A. (CGC), Echo’s Argentinian partner.