It comes after a workover programme was successfully completed, to replace a pump and a broken rod.
The company noted that whilst the well contributes only five barrels of oil per day it remains sufficient for the Duff lease to be "Held By Production", thus allowing other development options to be matured.
Another workover has also been completed, in the Duff-3 well, and that well will be returned to production too.
"Whilst the recent focus has been getting the Falcon-1 well on production, work continues on the other production areas with production being optimized with low cost workovers,” said John Barr, Mosman chairman.
“The team has identified additional development opportunities at Greater Stanley which work will commence next year."