The well targeted a multilayered, naturally fractured limestone reservoir where the upper zone offered good reservoir quality, while the lower zones had poorer properties with permeability between 0.2–0.3 mD. The well featured a 4,085 ft / 1,245 m open-hole interval, and the operator needed a way to unlock production from the tighter lower zones while still utilising the quality of the upper zone.
A horizontal well was landed in the D1 zone and drilled sub-horizontal through D3 and D4. In the high-quality upper interval, the completion used 4½” production subs without needles to provide straightforward inflow. Across the tighter lower sections, a 4½” Fishbones Jetting system with 20 subs and a total of 80 needles was installed to connect the lower layers to the wellbore and enhance communication between the zones.
Production ten times higher than expected
Production logging (PLT) confirmed a rate of 2,600 BPD from the lower zones alone, compared to an expected 250 BPD, demonstrating a tenfold increase versus the pre-job prognosis.
High, stable production without ESP
The well delivered stable, high production from the lower zones without the need for an electric submersible pump, simplifying operations and reducing lifting costs.
Field-development driver
This single well was able to meet the original three-well production target, and the success led to a field-development contract being awarded in May 2024, positioning Fishbones Jetting as the preferred stimulation solution for the field.
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