The physical simulation experiment proves that the maximum rebound of the sandstone over 1% is more responsible for the formation of the underpressure than other factors.

• 物理模拟实验结果表明砂体回弹量最大可超过1%25，它对地层低压形成的贡献远远大于其他因素，砂体回弹泵吸抽拉成藏是一种新的成藏机理。