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济阳坳陷地温梯度偏高,存在异常高压带,下第三系深部储层次生孔隙类型丰富。研究认为:(1)受温度作用控制,烃 源岩中不同类型的有机质在成熟过程中产生的有机酸有益于次生孔隙的形成;(2)成熟烃源岩丰富的有机质,是形成次生 孔隙的有利基础;(3)高地温有利于储层形成次生孔隙;(4)异常高压有助于深部储层次生孔隙的保存;(5)高地温、异常高 压带有机的时间、空间配置对深部储层次生孔隙发育程度具有很重要的影响。预测次生孔隙发育区带纵向上,沙三段比沙 四段有利,沙四段又较孔店组有利;横向上,东营凹陷梁家楼-牛庄-六户、利津-民丰和樊家北-纯化一带,沾化凹陷渤 南和孤北一带为有利地区。
The geothermal gradient in Jiyang Depression is high with abnormally high pressure zones, and the secondary pores in the deep reservoirs in the Lower Tertiary are abundant. The results show that: (1) Under the control of temperature, the organic acids produced by different types of organic matter in source rocks are beneficial to the formation of secondary pores; (2) The mature organic matter of source rocks is secondary (3) high ground temperature is conducive to formation of secondary pores in reservoirs; (4) abnormal high pressure contributes to the preservation of secondary pores in deep reservoirs; (5) high temperature and abnormal high pressure with organic time and space Configuration has a very important influence on the degree of secondary porosity development in deep reservoirs. It is predicted that the second member of Shahejie Formation is more favorable than the fourth member of Shahejie Formation in the third member of Shahejie Formation and the fourth member of Shahejie Formation in the longitudinal direction of the second member of Shahejie Formation. In horizontal direction, Liangjialou - Niuzhuang - Liuhu, Lijin - Minfeng and Fanjia North - Purification zone, Zhanhua depression Bonan and Gubei a favorable area.