关于长堤潜山披覆构造带东翼含油气性的讨论

Discussion on hydrocarbon-bearing possibility in east flank of drape structural zones of Changdi buried hill.

该文作者曾对长堤古潜山的含油气性进行过论述 ,并指出桩东凹陷的烃源岩可以向长堤潜山披覆构造带的第三系和中生界圈闭提供油气 ① 。目前 ,潜山东翼相继完钻的桩参 1、桩 14、桩 13等井都没有见到好的油气显示 ,该区油气勘探受到挫折 ,并引起其含油气性的争论。文章从桩东凹陷的生烃潜力、油气运移、潜山构造、圈闭的形成及其生、储、盖的配置等方面系统地分析了该区成藏的有利因素 ,仍认为潜山东翼具有较好的含油条件 ,勘探的关键是寻找有效圈闭 ,这种圈闭并非仅局限于构造高点 ,坡折带沟谷砂岩体是该区值得重视的勘探领域。

The author had discussed the hydrocarbon?bearing possibility of Changdi buried hill in previous paper, and pointed out that source rocks in Zhuangdong sag might provide oil and gas for Tertiary and Mesozoic traps of drap structural zones of Changdi buried hill. No good oil and gas shows appeared in the well Zhuang 1, Zhuang 14, Zhuang 13 and so on completed in succession at the east flank of buried hill. It made exploration difficult and caused the contention of its hydrocarbon?bearing possibility. Favorable factors of pool forming in this area are analyzed systematically from hydrocarbon generation potential, oil?gas migration, buried hill structure, trap formation and source?reservoir?seal assemblage in Zhuangdong sag. We still believe that good oil?bearing conditions exist at the east flank of the buried hill, the key of the exploration is to look for effective trap which won't confined to structural high, valley sandstone body of slope break belt is worthy of being taken seriously as a new exploration field.sag ,hydrocarbongen