Research on carbon emission accounting method and carbon emission reduction path of oilfield extractive water discharge treatment plant
The research focuses on the water discharge treatment plant for heavy and ultra-thick oil recovery.The wastewater treatment process includes conditioning de-oil tank,inclined plate de-oil tank,two-stage dissolved air flotation device,walnut shell filter,cooling tower,two-stage AS-PACT process,dual sedimentation tank,and quartz sand filter.A method for accounting carbon emissions from heavy oil and super heavy oil produced water has been developed.The car-bon emission intensity of the external discharge plant is 3.78 kgCO2eq/m3,with indirect carbon e-missions accounting for 87.20%.This clarifies the key points of carbon emissions in the entire process of produced water treatment.Secondly,the study analyzes the indirect carbon emission in-tensity resulting from material,heat,and electricity consumption.It explores the energy-saving and carbon reduction path of the effluent treatment plant.
Oilfield produced waterCarbon emissionsCarbon accountingEmission factorE-mission reduction path