There are three patterns of lateral enclose for the faults of buried hill Chegu 20: sealed by lithology joint, sealed by shale-smear and sealed by high displacement pressure in fault zone.

• 摘要车古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。