Core Viewpoint - The Daqing Oilfield is effectively addressing the challenge of oil sludge disposal through the establishment of specialized treatment stations, achieving a "one stone, three birds" effect by recycling oil, reusing water, and utilizing sludge for construction purposes [1][2]. Group 1: Oil Sludge Management - The Daqing Oilfield's production in 2024 is expected to generate 44,000 tons of sludge, with oil sludge accounting for 18.95% due to oil extraction and construction activities [1]. - The oil sludge treatment station in the 7th operation area has an average daily processing capacity of approximately 60 tons during summer, significantly mitigating the issue of secondary pollution [1]. Group 2: Treatment Process and Outcomes - The processed sludge is divided into three components: sludge with oil content ≤2% is sent to drying areas, treated wastewater is discharged to the wastewater system, and oil with water content below 3‰ is transported to the joint station [2]. - The treatment station can process 6,600 tons of oil sludge annually, achieving harmlessness, resource utilization, and economic benefits, with treated soil meeting the pollution control standards for oil sludge in Heilongjiang Province [2].