Oil and Gas News

Santos records 17% upward revision of Tanumbirini wells

Tamboran’s T3H drilling program complete

Santos, the operator of EP 161 permit within the Beetaloo Basin, has advised on a 17 per cent increase to the previously reported gas flow rates from Tanumbirini 2H (T2H) and T3H.

This follows a recalibration of the historic flow data as reported on 1 February 2022, which now indicates the average gas flow rates from T2H and T3H were 2 million standard cubic feet per day (mmscfd) and 1.7 mmscfd.

Tamboran Resources managing director and CEO Joel Riddle said during the course of flow testing, the T2H and T3H wells representative gas samples from the Velkerri B shales interval were acquired.

“Compositional analysis was completed on these samples confirming the presence of high-quality gas in both wells. Well test gas rates have been updated based on these analyses,” Riddle said.

“The revised flow rate data has resulted in a 17 per cent increase to the 14-day average gas flow rate for the T2H well to 3 mmscfd and in the 10-day average gas flow rate for the T3H well to 2.9 mmscfd, normalised over a 1000 m horizontal section.”

Riddle said the T2H well has continued to underfow flow testing during March 2022, with the 60-day average flow rate showing minimal decline, delving 1.8 mmscfd over the stimulated 660 m lateral section, normalised at 2.7 mmscfd over 1000 m.

“Flow testing at this rate from the fracture stimulation program gives us increased confidence in the productivity and has not changed our understanding of the commerciality of the Mid-Velkerri B shale within the Beetaloo Basin of the NT,” he said.

The T3H well was shut-in during mid-February 2022 to record surface pressure build-up and to run a production tubing string to optimise well performance.

Santos is assessing the potential to run production tubing in the T2H well in the second quarter of 2022.