桩西-埕岛地区下古生界潜山储集层特征及形成机制

以济阳坳陷桩西一埕岛地区为例，研究了下古生界潜山储集层的主要特征，并对储集空间类型及其成因机制进行了分析。指出不整合面岩溶型和潜山内幕孔洞型储集系统组合形成了桩海地区的立体储集空间。岩溶作用是潜山不整合面附近碳酸盐岩岩溶储层的主要形成机理，主要集中在加里东不整合面之下150m的深度范围。白云石化作用是潜山内幕储层的重要形成机理，冶里一亮甲山组储集层与埋藏成岩过程的白云石化作用，尤其是与粒屑的优先白云石化造成的体积收缩作用有关。

Characteristics and forming mechanism of buried hill reservoir of Lower Paleozoic in Zhuangxi-Chengdao area

The characteristics of buried hill reservoir in Zhuangxi-Chengdao area are studied, and the reservoir space types are analyzed. It is pointed out that the reservoir space is composed of karst reservoir and pore reservoir. Karstification is the main forming mechanism of the carbonate karst reservoir near the unconformity, and the depth influenced by atmogenic freshwater is about 150 m under the Caledonian unconformity. Dolomitization is the important forming mechanism of buried hill reservoir. The reservoirs of Yeti-Liangjiashan Formation are mainly concerned with dolomitization during the buried processing, especially concerned with the volume contraction of grains.