Taking the Triassic middle oil-group of well AT1 in the Tahe Oil Field as example, the physical property, lithology and pore structure features of the main oil-producing reservoir were delicately described through multiple experimen tmeans. The middle oil-group in the region is divided into 2 sets of reservoir (7 and 9 mthick, respectively, oil storage pore ratioof 5-20μm) with relatively complete Bouma sedimentary sequence by mud interbed. Potential damages such as speed, acid and alkalinity sensitivities might exist inreservoir. Permeability features and exploitation quantity of the reservoir during different stages were proposed through experiments.

The gas condensate reservoirs in Yakela and Dalaoba regions are middle and small sized clastic rock reservoirs with edge and bottom water, characterized by deep burial depth, high condensate oil content, strong reservoir sensibility, strong heterogeneity, big barrier thickness and medium-low permeability. Production tests were made in 1984 and fully developments were carried out in 2005, resulting in experiences in condensate oil exploration. Perforating technology has been practiced and improved for years. A set of perforating technology system suitable for different reservoir characteristics and exploration stages was proposed, improving gas condensate reservoir exploration effects.