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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 has discussed the hydrocarbon-bearing properties of the Changdi buried hill and pointed out that the source rocks in the Pudong sag can provide oil and gas to Tertiary and Mesozoic traps in the buried structural belt of the Changdi . At present, no well-developed oil and gas shows have been seen in pile grit 1, pile 14, pile 13 and other wells successively drilled by the eastern wing of the buried hill, and the oil and gas exploration in this area has suffered setbacks and caused controversy over its hydrocarbon-bearing properties. This paper systematically analyzes the favorable factors of hydrocarbon accumulation in the area from the aspects of hydrocarbon generation potential, hydrocarbon migration, buried hill structure, formation of traps and the configuration of its raw, The key to exploration is to search for effective traps. This trap is not limited to tectonic high points. Slope fractured zone sandstone bodies are the exploration areas worthy of attention in this area.