Galilee Energy (ASX:GLL) sidetracks Zydeco-1 well to test five shallow oil zones and deeper Stafford and Upper Tweedel, raising gross potential to 422 kbbl. A decision on final well design is pending.
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Galilee Energy (ASX:GLL) plans to sidetrack the Zydeco-1 well in Louisiana, aiming to evaluate seven oil and gas targets from a single wellbore. The decision follows analysis of logging data that identified five shallow intervals with prospective resources.
The five shallow zones – Borsum, Richie, Discorbis gravelli, First Het and Homeseeker B – carry a combined 2U gross prospective resource of 317 thousand barrels (kbbl) and 422.6 kbbl on a 3U basis. Adding the deeper Stafford and Upper Tweedel intervals, the sidetrack now tests a broader stacked-pay inventory.
“The original Zydeco well has given us substantially more information than we had before drilling. The sidetrack is now designed to capture that value by testing a broader, stacked target inventory from the shallow oil zones through Stafford and into the Upper Tweedel,” managing director Joseph Graham said.
The shallow targets were identified from original-hole logging-while-drilling data, supported by seismic interpretation and offset wells including MacCabees-1 and J.D. Sittig #1. All five intervals sit within a compact lease position close to existing Gulf Coast infrastructure, which Graham said lowers potential development costs.
“Our immediate focus is to finalise the sidetrack design and evaluation program so that if we encounter movable hydrocarbons, we will collect the pressure, fluid and petrophysical data needed to make a disciplined commercial decision,” he added.
The proposed sidetrack is intended to preserve and re-evaluate the five shallow intervals before reaching Stafford at approximately 9,391.5 ft TVD and Upper Tweedel at approximately 9,579.5 ft TVD. Exact kick-off point, trajectory, casing design and final total depth remain subject to drilling-engineering approval.
GLL was steady at 0.4¢ with a market cap of $7.245 million ahead of markets opening.
The play highlights the stacked-pay potential still being proven by small-cap explorers in the Gulf Coast region, where infrastructure access and multi-zone targets can improve the economics of a single well. Galilee Energy’s expanded target set at Zydeco offers a tangible next catalyst as the company works toward a disciplined commercial decision on any discovered hydrocarbons.
The project targets crude oil and natural gas, with the shallow zones skewed to oil based on the resource estimates.
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