The company has started drilling ahead at the Kamar-1 well at the Sidi Moktar exploration licence area.
Kamar-1 has a total planned depth of 3500 metres, with drilling expected to take about 70 days, and is targeting the lower Liassic reservoir and Triassic clastic reservoirs.
Longreach will use the drilling rig Saipem Drillmec Mas 7000 to drill the well.
The Kamar prospect is thought to hold best-estimate potential resources of 78 billion cubic feet of gas and five million barrels of condensate, according to an assessment by Gaffney Cline & Associates.
Last year, Longreach saw gas shows on the licence with the drilling of Koba-1.
The well intersected a 45-metre gross reservoir interval in the lower Liassic sandstone and recorded gas shows with “heavier hydrocarbon components”.
Longreach holds a 50% operatorship interest in the three-block play, with Maghreb Petroleum Exploration and Moroccan state energy company ONYHUM each holding a 25% carried interest.