Union Jack Oil PLC (AIM:UJO) notified investors that the planning application for the West Newton A well site expansion was declined by the East Riding of Yorkshire Council Planning Committee.
The company, in a brief statement, said that further updates will be announced in due course.
At the West Newton A site the company wanted to conduct an extended well test operation, after the reservoir was previously shut-in for two years.
Last month, the company updated on its operations at the West Newton B site near the river Humber, where testing identified a significant hydrocarbon column.
A 44-metre section of the Kirkham Abbey formation was perforated in the West Newton B-1z well and hydrocarbons were produced to surface – as described by the company, good quality gas was recovered along with liquid hydrocarbons.