WEST PERTH, Australia – Mubadala Petroleum and partner Tap Oil have committed to drilling three new production wells this year at the Manora oil field in the Gulf of Thailand using the jackup Valaris 115.
In addition, while the rig will perform a workover of the MN-15 well to replace an electric submersible pump and another workover of the MNA-7 well to add water disposal capacity.
The development program is as follows:
MNA-25, a deviated well designed to produce oil in the 600 series reservoirs of the Manora central fault block. It will be drilled close to the existing MNA-01 well, targeting 610, 620 and 650 sands in an updip location, to an MD of 2,400 m (7,874 ft) and completed with a multi-zone completion: its initial production rate should be 1,100 b/d.
Currently MNA-01 is producing 680 b/d of oil with 84% water cut from the 650 sand.
MNA-26 will be a horizontal development well on the field’s eastern fault block, designed to access potentially undrained oil in the 370-10 reservoir first developed by the 2019 MNA-24 horizontal well.
It will include a 400-m (1,312-ft) horizontal section in the upper 370-10 reservoir completed with a sand screen. MNA-26 will be drilled to an MD of 2,225 m (7,300 ft): again, the estimated rate at start-up is 1,100 b/d.
MNA-27 will be deviated well from a new platform slot, effectively twinning the MNA-22 well drilled in 2019 that could not be put into production at the time due to a poor cement bond behind the production casing.
Well logs showed total oil net pay of 56.5 m (185 ft) in the 490 and 500 series sands, both to be targeted by MNA-27. The well will be drilled to depth of 2,011 m (6,598 ft) and completed with a multi-zone completion. Gross estimated drilled and completed cost is $3.61 million ($1.08 million net to Tap).