Independent Oil and Gas plc is determining the commerciality of its first operated appraisal well on the Skipper oil discovery, which lies in Block 9/21a in license P1609 in the Northern North Sea.

Although oil is moving in the reservoir, the first sample results indicate that the oil is approximately 11° API and has a significantly higher viscosity than expected, said IOG in a company statement.

These measurements do not align with the company’s observations, which is why the remaining samples will be reviewed and tested by IOG. The next step will then include reservoir modelling to consider potential development options. Determining commerciality may take several months, the company said.

“The analysis of the oil retrieved from the appraisal well indicates that Skipper is a heavy oil discovery with similar gravity to other nearby heavy oil fields,” said IOG CEO Mark Routh.

“The initial oil analysis results are incompatible with our observations, therefore we are now reviewing our strategy to establish the commerciality of Skipper. In addition, we have an increased oil in place, higher observed reservoir permeabilities and an increased reservoir height from the crest to the oil water contact,” he added.

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