Orderly distribution and differential enrichment of hydrocarbon in oil-rich sags: A case study of Dongying Sag, Jiyang Depression, Bohai Bay Basin, East China

Yongshi WANG,Xuefeng HAO,Yang HU

Table 1 Statistical results of different types of reservoirs in Dongying Sag.

Reservoir type Discharge pressure/MPa Saturation median pressure/MPa Pressure coefficient Main interval Average value Main interval Average value Main interval Average value Stratigraphic reservoir 0.005- 0.100 0.05 0.03- 0.15 0.10 0.90- 1.00 0.99 Structural reservoir 0.010- 0.120 0.08 0.10- 0.50 0.42 0.90- 1.16 1.02 Lithologic reservoir 0.050- 1.000 0.38 0.50- 5.00 2.79 1.30- 1.60 1.49