An Effective Way of High-Quality Development of Water Drive in the Late Stage of Ultra-High Water Cut

After years of deep development, the water drive in Sazhong Development Zone of Daqing Oilfield has continuously increased the comprehensive water cut, the casing damage situation is becoming more and more serious, the potential of measures is decreasing year by year, and the difficulty of stabilizing production is increasing. Without the support of large-scale production capacity construction, we need to focus on tapping the existing resource potential, strive to solve various development and adjustment problems, and achieve the goal of controlling water cut and decline. Without the support of large-scale production capacity construction, we need to focus on tapping the existing resource potential, strive to solve various development and adjustment problems, and achieve the goal of controlling the rising rate of water cut and controlling the decline of production. Based on the analysis and understanding of the overall development situation of water drive, this paper defines the working idea of “controlling the rising rate of water cut and controlling the decline of production”, adheres to paying equal attention to controlling the rising rate of water cut and tapping the production potential of oil reservoir, carrying out adjustment and treatment at the same time. Innovates the well condition repair, fracturing integration and pressure drilling technology, and improves the degree of reserve production. Innovate big data analysis and decision-making technology to optimize water injection scheme design. Innovate coiled tubing fracturing and fracturing oil displacement technology, and broaden the potential space of measures. Innovative tracer flow simulation technology accurately identifies invalid cycles. With the support of a series of technologies, the development and adjustment mode of “four optimizations” in the later stage of ultra-high water cut has been formed. A total of 17 technical measures in four aspects have been fully popularized and applied in Sazhong Development Zone, which has played a key supporting role in the long-term and stable development of water drive.