The quality of crude oil output is a critical metric for oilfield production operations, with water content being particularly crucial as it directly impacts subsequent processing and the economic benefits of the enterprise. In response to the essential challenge of controlling water content in crude oil output, the sixth operation area of Daqing Oilfield's sixth oil production plant has implemented precise strategies and systematic efforts. They have innovatively introduced a "Three Controls, Three Adjustments, and Dual Support" management mechanism to address challenges across the entire chain from equipment operation and production adaptation to data assurance. This initiative has significantly improved the efficiency of water separation in crude oil output, ensuring that the quality of exported crude oil consistently meets standards and reinforcing the quality defense for stable oilfield operations.

"Three Controls" Focus on Core Equipment Operation Stable equipment operation is fundamental for effective water separation. The sixth operation area prioritizes two core devices: the free water removal unit and the electrical dewatering device, implementing three precise control measures to maintain optimal working conditions. They rigorously control the separation temperature of both devices to remain above 40 degrees Celsius, ensuring the oil-water mixture reaches the most favorable physical state for separation. Additionally, they maintain the free water interface strictly within 1.6 meters to enhance separation efficiency and limit water content at the free water oil outlet to below 50%, reducing subsequent treatment pressure from the source. They have also innovated a combined approach of "low-flow continuous oil collection + scheduled site-specific oil collection," coordinating collection volume and speed to prevent excessive collection that hinders separation, thus maximizing equipment operational efficiency.

"Three Adjustments" Ensure Precision in Production Adaptation Dynamic changes in crude oil properties and inflow conditions necessitate higher demands on water separation technology. The operation area centers on "precise adaptation," employing three dynamic adjustment measures to ensure the separation process harmonizes with actual production conditions. Technicians optimize and adjust chemical formulas in real-time according to the compositional differences of inflows at different times and wells, ensuring a precise match for the addition of first and second-phase additives to maximize chemical effectiveness. The quantity and method of dosing are flexibly adjusted based on crude oil viscosity and impurity content to stabilize the demulsification effect and effectively reduce the level of oil-water emulsification. Close attention is paid to the trends in electrical dewatering device current to anticipate required adjustments to the oil output valve, ensuring stable current and voltage parameters and avoiding quality impacts from parameter fluctuations.

"Dual Support" Strengthens Quality Assurance Accurate data and risk warnings act as dual insurance for exported crude oil quality. The sixth operation area aims to "fortify the data foundation and weave a dense early warning system," enhancing supporting capabilities to safeguard improvements in water separation efficiency. In terms of data support, the operation area continually upgrades laboratory hardware, optimizes testing processes, and adheres strictly to organic chlorine and water measurement standards, clearly defining daily testing frequencies and assigning personnel to verify data accuracy, timeliness, and reliability as a scientific basis for production adjustments and quality control. For early warning support, a full-process linkage mechanism of "monitoring – warning – response – verification" has been established. Clear threshold conditions trigger warnings, such as when organic chlorine levels approach warning values or when water content exceeds 0.3%. Emergency response procedures are initiated upon threshold breaches, with coordination among multiple departments—including technical, production, and equipment teams—to dynamically adjust production parameters, fostering a "rapid response, collaborative linkage, and closed-loop management" work model, effectively preventing substandard crude oil from exiting.

Following the implementation of the "Three Controls, Three Adjustments, and Dual Support" mechanism, the efficiency of water separation in crude oil exports has significantly improved, with the quality of exported crude oil consistently meeting high standards. Moving forward, the operation area will continue optimizing and refining management measures based on actual production conditions, tailoring control plans to adapt to changes in crude oil properties and new operational characteristics, thereby maintaining strict quality standards for exported crude oil and contributing robustly to the high-quality development of Daqing Oilfield.