During the discussing hydrocarbon property in Changdi Paleozoic erathem buried hill and its east flank of drape structure in 2000, the oil source in Changdi area was initially discussed.

• 20 0 0年,在讨论长堤古生界潜山以及其披覆构造东翼的含油气性时,曾对长堤地区的油源问题进行过初步分析。