Masirah Oil Limited said that it has completed the drilling campaign in Block 50 offshore Oman. The drilling campaign included the replacement of the electrical submersible pump in the Yumna-3 well and drilling of the Yumna-4 well.
In November 2022, Rex International — which holds a 91.81 per cent stake in Masirah Oil — announced that the Yumna-4 Deep appraisal /exploration well in the Yumna Field had been spudded. The well is being drilled by Compact Driller, a medium-class jack-up rig from Shelf Drilling. Yumna-4 Deep is a dual-objective directional well.
The objective was to test the eastern extension of the Yumna Field which is productive from the Aruma Formation at about 1,700 metres. After reaching the Aruma, the well was deepened to the exploration objective which is a structural closure in the Khufai Formation at about 3,000 metres. The Khufai Formation is productive onshore Oman but is under-explored in the offshore area.
Yumna-3 well is now producing an average of 4,050 barrels of oil per day, up from 3,590 barrels of oil per day with the previous electrical submersible pump. On the other hand, Yumna-4 well was drilled to test the eastern extension of the Aruma reservoirs of the Yumna Field and an exploration target below and north-east of the field.
Meanwhile, the company announces the Masirah Oil recorded an average production of 4,673 stock tank barrels per day from Yumna Field in offshore Block 50 Oman in December 2022. It recorded an increase of 22.6 per cent or 862 barrels per day compared to November 2022 oil production of 3,811 stock tank barrels per day.
Masirah Oil Limited is the operator and 100 per cent owner of Block 50 Oman, a 17,000-square-kilometer area east of Oman where the Yumna Field is located.