1, Skills learned: Diplomacy, adaptability, patience, performance underpressure, responsibility, self-confidence, strong work ethic.

2, Underpressure system developed in the Shiwu depression of Songliao basin with measured formation pressure gradient ranging between 0.

3, Moreover, gas diffusions also affect the formation of underpressure system at local part.

4, Both overpressure and underpressure could be predicted according to opposite response characteristics, because of their opposite causal mechanisms.

5, It is reported that the relative underpressure region within superpressure system and pressure-released region around were the potential areas for hydrocarbon accumulation.

6, The relation between hydrocarbon and groundwater flow system with underpressure and normal hydrostatic pressure is discussed.

7, Many studies indicate that the lifting and erosion of strata has a positive relationship with the underpressure in the strata.