There are 3 lateral sealing patterns of faults in Chegu 20 buried hill in Shengli oilfield, including lithology juxtaposition, shale smearing and high displacement pressure in faulted zone.

• 胜利油区车古20潜山断层侧向封闭有3种模式:即岩性对接封闭、泥岩涂抹封闭和断裂带高排替压力封闭模式。