oil sludge dispo

Oily sludge is one of the primary solid wastes generated during oil and gas extraction and petroleum refining, typically appearing as a black solid or semi-fluid substance. Its composition is complex, generally consisting of crude oil, water, and inorganic solid particles such as sand and drilling cuttings. The stable emulsified structure formed between the oil, water, and solids results in high viscosity, which increases the difficulty of separation. With the widespread application of tertiary oil recovery technologies (primarily chemical flooding), the properties of crude oil have evolved, leading to even more intricate oily sludge components. Under the current green and low-carbon initiative, petroleum and petrochemical enterprises face significant pressure regarding low-cost treatment a