From: Forward modelling and identification of shallow gas in the Bohai Bay seabed
Strata | Representative stratum | Depth of bottom layer /m | Formation thickness/m | Acoustic wave velocity m/s | Density g/cm3 |
---|---|---|---|---|---|
Layer-1 | Soft clay | 14.5 | 14.5 | 1573 | 1.81 |
Layer-2 | Silty fine sand | 25.7 | 11.2 | 1655 | 1.99 |
Layer-3 | Hard clay | 34.8 | 9.1 | 1603 | 1.87 |
Layer-4 | Silt | 49.8 | 15.0 | 1658 | 2.01 |
Layer-5 | Dense silt | 58.8 | 9.0 | 1616 | 1.91 |
Layer-6 | Hard silty clay | 120 | 61.2 | 1661 | 2.01 |