Selmo-36 – a 460 foot lateral well – took 23 days to drill, slightly longer than expected due to a motor twist-off.

Incremental has cleaned-up the drilling fluids and is currently preparing the well for a trial production phase before acidisation.

“The Upper Dolomite reservoir usually requiresd acidisation to produce significant oil volumes, and this operation will be performed in the coming weeks once equipment is available,” it said.

The rig has now moved to the third well site, Selmo-41.

Incremental is using its own drilling rig for the four-well program, which is expected to cost $US4.2 million.

The company completed a similar USR campaign last year, where six vertical wells were re-entered and horizontal completions made to boost production.

The strategy appeared to work, with output from one well, S43, increasing 300% to 112 barrels of oil per day.

But the project took 50%, or four to six months, longer than expected to complete, pushing up the total project cost up to $5.03 million.