New Treatment Processes for Fracturing Flowback Fluids
Hydraulic fracturing technology is the main method for developing low-permeability reservoirs and unconventional oil and gas resources. The flowback fluid generated during the fracturing process contains a variety of harmful substances, including oil, phenols, formaldehyde, guar gum, and others. Its composition is complex, the degree of emulsification is high, and it has strong stability, making it difficult to treat. If not effectively treated before being discharged or reinjected into the formation, it can cause severe environmental pollution and damage. Researchers often use combined methods, such as physical, chemical, and biological processes, to treat fracturing flowback fluids. Traditional treatment methods generally suffer from long process flows, numerous equipment requirements, and high chemical dosage, leading to high operational costs.
Compared to traditional methods, Shenzhen Clear Science & Technology Co., Ltd (SINOKLE) has developed a new treatment process for fracturing flowback fluids: CDOF (Cyclonic Dissolved Ozone Flotation Unit) + CDFU (Cyclonic Dissolved Gas Flotation Unit) + Filter. The CDOF (Cyclonic Dissolved Ozone Flotation Unit) combines multiple technologies such as ozone multiple oxidation, cyclonic dissolved air flotation, and flotation, effectively removing suspended solids, colloids, and other contaminants from the wastewater, achieving the effect of breaking emulsions and reducing viscosity. The CDFU (Cyclonic Dissolved Gas Flotation Unit) uses a large number of micro-bubbles to efficiently and rapidly remove free oil, emulsified oil, suspended solids, and other pollutants from the wastewater. After flotation treatment, the effluent is further filtered through a fine filter to ensure stable and compliant discharge water quality.
Technical Features:
a. Strong adaptability: Capable of adapting to the treatment requirements of flowback fluids with different properties generated by various fracturing fluid systems and processes.
b. Good shock resistance: Ensures that effluent quality meets user specifications even under significant variations in water quality, volume, temperature, etc.
c. Patented products (CDOF and CDFU): Efficient oil removal and suspension solids removal, quickly achieving emulsion breaking and viscosity reduction.
d. Short residence time (1/5 of traditional methods), small footprint (1/3 of traditional methods), and compact skid-mounted equipment that is mobile and allows for rapid, efficient on-site treatment.
e. Low chemical consumption, minimal sludge production, fewer supporting equipment, and low operational costs.
f. Fully automated, closed, pressurized operation, ensuring safety and environmental friendliness.
