Abstract: Tight oil reservoirs are widely distributed and have a huge resource potential in the Daqing oilfield. For effective development of such tight oil reservoirs, the fracturing stimulation based on geology-engineering integration was proposed. Specifically, the pad-based fracturing scheme was optimized to combine geologic, drilling and fracturing data with operation procedures, maximizing the stimulated reservoir volume. Following an intensive factory-like operation mode, the number of field staff was reduced to 26, and the covering area was saved by 77%. With one package of fracturing truck, the fracturing operation was completed in 154 stages of 9 horizontal wells in Block Fang 198-133 within 32 days. Accordingly, a set of specific factory-like fracturing specification for Daqing oilfield was established. As a result, 1.55×10⁴m³ of oil or 38.1m³ per well per day has been produced during 158 days after fracturing stimulation, which is 14 times higher than the vertical well stimulated in the block. With the increase of productivity and efficiency, the comprehensive operating cost was reduced by 36%. Thus, the tight oil reservoirs in the block were fully recovered and developed economically and effectively. And the practices are significant to the production improving of tight oil reservoirs in other blocks of Daqing oilfield.

Key words: tight oil, geology-engineering integration, factory-like, fracturing, Daqing oilfield