Abstract: The proven reserves of heavy oil in Shengli oilfield amount to 750 million tons , yet its development faces bottlenecks such as low oil recovery of steam stimulation and poor reservoir quality To efficiently developing deep, thin, and highly sensitive heavy oil reservoirs, Shengli Oilfield has established a differentiated enhanced oil recovery (EOR) technique system based on mechanism studies and pilot tests, including multi component thermal flooding, high pressure viscosity reduction flooding for low-permeability heavy oil, and multi component thermal stimulation using branched horizontal wells. Such technologies have significantly improved both well productivity and overall block oil recovery, effectively supporting stable heavy oil production and increasing economic benefits. Currently, facing challenges such as increasingly complex reservoir conditions, urgent demands for energy transition, and continuously enhanced green and low-carbon constraints, Shengli Oilfield needs to strengthen interdisciplinary integration. Systematic scientific investigation should be conducted to deepen mechanistic understanding, optimize process combination, and enhance system efficiency. Key areas include multi component thermal flooding using complex well patterns, in-situ heavy oil extraction, nanotechnology for oil recovery, and new energy-assisted thermal recovery. The aim is to develop a new-generation EOR system adaptable to complex reservoir conditions, providing technical support for the efficient development of heavy oil.