ARKOIL Technologies Nederland B.V. in collaboration with CIC Environmental Services Sdn Bhd successfully performed cleaning of the tank T170 with the capacity of 12 300 m3 for Brunei Shell Petroleum at Seria Crude Oil Terminal. The project was complicated by a high concentration of solids in the oil sludge (around 78%). Due to the high qualification, ARKOIL engineering team managed to maintain tank integrity. Application of ARKOIL tank cleaning technology significantly reduced cleaning time almost thrice compared to the terms of previously executed similar tank cleaning projects at Seria Crude Oil Terminal