- Andalas Energy and Power said Friday results from drilling a sidetrack well indicated the Colter prospect was smaller than initially expected.

A side-track well to the north of the Colter prospect had been drilled to a total depth of 1910m and encountered the Sherwood Sandstone below the oil-water-contact of the 98/11-3 well. Initial evaluation of the data from both wells indicated that the Colter prospect was 'smaller than pre-drill estimates,' the company said.

The Colter South discovery, however, remained an opportunity to evaluate further as it was now areally more extensive than indicated by the pre-drilling mapping.

'The Colter appraisal programme has delivered a larger than expected Colter South prospect and significantly increased our understanding of the broader Colter prospect,' said Simon Gorringe, CEO said.

'The results of the sidetrack does, however, indicate that overall the Colter prospect is smaller than initially expected, but the results from the drilling of the sidetrack did deliver encouragement for our adjacent onshore prospects from the good shows encountered in the Middle Jurassic.'

At 9:31am: [LON:ADL] Andalas Energy Power PLC share price was -0.3p at 0.18p

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