The disccussion of Synthetic Development Technology in Special Low Permeability Pools Oilfields

The zones 6-10 of Es³ in Pucheng Oilfield is characterized by abnormal low permeability of 1.9×10^-3 μm², stable distribution, good connection coming to more than 80% under the control of 300-400m well spacing. Technologies such as reasonable layout of pattern type, dual targeted orientational drilling, high pressure injection increase, early waterflood for complement energy, high efficient perforation and bullhead fracturing etc, are applied to improve pay zone and to prevent production well from being flooded in design of development. Downhole pumping with small power is used to enlarge drawdown and increase off-take potential of production wells. The experience in zones 6-10 of Es³ in Pucheng oilfield can be used for reference in developing other oilfields with characters alike.