Core Viewpoint - The development of the "multi-point hydroxylamine controllable plugging and adjustment system" by Shengli Oilfield Petroleum Engineering Technology Research Institute has successfully completed product pilot processing optimization, achieving a production capacity of 10 tons per day, and has been applied in 19 well groups, resulting in an additional oil output of 5,570 tons [1] Industry Summary - China's medium and high permeability oil reservoirs have significant reserves, with geological reserves totaling 13.3 billion tons and an annual production of 57.65 million tons, accounting for 38.7% and 27.1% of developed oil fields respectively [1] - Many medium and high permeability oil reservoirs have entered a "double super high" stage after years of development, leading to severe inefficiencies in water injection [1] - Water plugging and profile adjustment is a crucial method for achieving balanced displacement, but it faces challenges such as increased strength requirements for plugging agents due to fractures and large pores, as well as unavoidable degradation of polymer materials under high temperature and high salinity conditions [1] Company Summary - The research team has initiated the project "Research and Application of Multi-point Hydroxylamine Controllable Plugging and Adjustment System" to address the aforementioned challenges [1] - By analyzing the gelation rules of hydroxylamine gel and conducting microscopic analysis, the team clarified the reaction mechanism of the system, which involves "hydrolysis-self-polymerization-crosslinking," and created application diagrams for different scenarios [1] - Through optimization of reaction product ratios and conditions, the team synthesized indoor small samples, constructed the plugging and adjustment system, and conducted evaluation experiments, which showed significant improvements in strength and thermal stability, effectively overcoming technical bottlenecks in deep migration and high-strength sealing of existing plugging products [1]