Russia’s environmental watchdog has estimated that approximately 100t of oil spilt from Lukoil’s pipeline last week in Komi region.

The spill estimates include 9t of oil-containing fluid that flowed into the Kolva River water body, the Federal Service for Supervision of Natural Resources (Rosprirodnadzor) was quoted by Reuters as saying.

The leakage was identified on 11 May from the Lukoil’s pipeline that connects a pump station of the Oshskoye field and a booster pump station No 5 of the Kharyaginskoye field in the Nenets Autonomous District.

Lukoil attributed the cause of the spill to the loss of pipeline’s piping integrity, within 300m from the Kolva River coastline.

​Subsequently, the firm commenced clean-up operations of oil-containing fluid at the territory of the Nenets Autonomous District (NAO) and the Republic of Komi.

The Russian firm said it also submitted the incident report to regional offices of Rosprirodnadzor and Rostechnadzor, as well as to the unified NAO duty dispatching service, in compliance with all regulations.

A day after the incident, a state of emergency was declared in the northern Russian city of Usinsk, where Kolva River is located.

In a press statement, Lukoil said: “Gathering of oil-containing fluid from the water surface goes on around the clock. Sorbent agents and boom defences are in use at the seven response lines. Around 2,500m of containment and adsorbent booms are installed.

“30t of highly efficient sorbent agents have been employed to adsorb particles of oil products and make their gathering easier.”

Earlier this year, Lukoil commissioned high-viscosity index oils production complex at the 14.8 million tonnes/year Volgograd refinery in southern Russia.