Triangle Energy has confirmed that the Becos-1 exploration well in the Perth Basin has been plugged and abandoned after failing to uncover hydrocarbons in commercial quantities.
The well, located in exploration permit EP 437, reached a total depth of 1107m measured depth (MD) in the early hours of 18 April 2025.
Electric logs were run after reaching depth, with analysis carried out over the weekend.
Only a 2m low porosity section of High Cliff sandstone (943 to 945m MD) showed gas presence, but it was deemed immoveable.
Minor gas shows were also observed in the Bookara sandstone.
Becos-1 was drilled by the EP 437 Joint Venture, which includes Triangle Energy (50 per cent, operator), Strike Energy (25 per cent) and Echelon Resources (25 per cent). Drilling was undertaken by Silver City Drilling using Rig 24.
Triangle Energy managing director Conrad Todd said the result highlights the complexity of the basin’s petroleum systems.
“The Becos-1 well is further evidence of the complexities of the hydrocarbon system which sourced the gas at Wye-1 and the oil in the Mount Horner Oilfield,” Todd said.
“Significant prospectivity remains in our north Perth Basin permits in a number of different plays and as yet untested areas.
“Despite the result of Becos-1, Triangle continues to be well placed and funded to carry out future exploration and new ventures projects, with a healthy cash balance and up to $18 million to be received for the sale of the Cliff Head Assets.”
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