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On January 23, the author learned that the Jilantai Oilfield of the Bayan Branch of Huabei Oilfield has continuously deepened the efficient development management model of old oilfields, constantly optimized the technical system and management mechanism, and all key development indicators are at the leading level in the industry. In 2025, the Jilantai Oilfield was awarded the title of "Efficient Development Oilfield" in the oil and gas new energy sector of the Group Company.
In 2025, facing multiple challenges such as complex geological conditions, limitations of conventional development technologies, and high difficulty in efficient development, the Jilantai Oilfield innovatively adopted the development methods of "metamorphic rock basement volume fracturing + bottom water injection" and "top + middle point gas injection + edge bottom water injection" for sandstone and conglomerate reservoirs, effectively supporting the large-scale and efficient development of resources. Since its development began in 2020, in response to problems such as high water cut and gas channeling in oil wells, technicians, through in-depth geological research of the oil reservoir, strengthened dynamic tracking analysis, and implemented early governance and adjustments, gradually forming a series of technologies such as stratified and zoned water injection pressure stabilization in the basement, gas control and oil increase in sandstone and conglomerate reservoirs, weak acid surfactant unblocking and production increase in low-yield wells, and foam plugging. Currently, the oil well discovery rate of the Jilantai Oilfield exceeds 80%, the comprehensive water cut is controlled within 4%, and the natural decline rate of the oil reservoir is controlled within 7%.