A CGT representative said police broke up the Normandy TotalEnergies Gonfreville refinery blockade early Friday morning.
Police allowed requisitioned workers into the refinery.
Alexis Antonioli, Gonfreville secretary-general for the hardline CGT union, told Reuters that police removed strikers.
Energy Minister Agnes Pannier-Runacher told RMC radio that 15% of French petrol outlets and 10 200 fuel depots were still disrupted.
When strikes entered their 16th day on Thursday, French refineries, LNG ports, electricity supplies, and nuclear reactor maintenance were affected.
TotalEnergies SE, one of the seven supermajor oil companies, was founded in 1924. Its operations include crude oil and natural gas exploration and production, power generating, transportation, refining, petroleum product marketing, and worldwide crude oil and product trading.
TotalEnergies is also a large-scale chemicals manufacturer.
