The UMU-11 well was originally planned to spud in the third slot of the UMU-9 drilling pad. When trying to clean out the 20-inch conductor that was previously pile driven to a depth of approximately 90 metres, the UMU-11 well encountered an obstruction at a depth of approximately 84 metres.
Retrieval and milling operations were attempted to utilise this drill slot, but were unsuccessful. It is believed that the 20-inch conductor is bent or kinked, which caused an obstruction.
The rig will now be skidded forward to a new slot utilising the existing drilling pad.
The main objectives for the UMU-11 well are proven oil reservoirs encountered, but not completed, in the UMU-9 and UMU-10 wells. These sands were previously logged and sampled.
The UMU-11 well’s objective is to test four of these oil-bearing sands, and if successful, complete these sands for production.
Information from Oil Review Africa was used in this report.