It seems the answer is yes. There are two refineries. According to https://www.equinor.com/en/what-we-do/terminals-and-refineries.html https://www.equinor.com/e

It seems the answer is yes. There are two refineries. According to https://www.equinor.com/en/what-we-do/terminals-and-refineries.html https://www.equinor.com/en/what-we-do/terminals-and-refineri..., Mongstad (the larger of the two) has capacity: "Petrol (gasoline) production at Mongstad is 4 times Norwegian domestic consumption"