Experimental Study on Leaching Pollution of Offshore Abandoned Drilling Cuttings
In order to ensure the ecological safety,environmental friendliness,and harmlessness of drilling cuttings in Bohai oilfield during processing and resource utilization,by conducting rock debris leaching treatment and soil pollution experiments,the hazard identification of the treated rock debris was carried out,and the relevant standards for green planting soil were compared.The results showed that the washed drilling cuttings did not have environmental hazards,and the content of toxic substances extracted did not exceed the content limit.After conditioning,the heavy metals and various indicators of the washed drilling cuttings met the Class Ⅱ requirements in the"Green Planting Soil"(CJ/T 340-2016)standard.This study provides an effective approach and strategy for environmental risk management and resource utilization of drilling cuttings in Bohai Oilfield.