Tethys Oil said it produced more than 9,000 barrels per day from its onshore blocks in Oman last month.
The company said its share of production before government take from blocks three and four amounted to 295,502 barrels of oil in total.
Tethys Oil has a 30% interest in blocks three and four.
In August Tethys made a u-turn on a previous offer by Nostrum Oil and Gas.