碎屑岩储集层类型随深度变化特征：以松辽盆地东南缘十屋断陷为例

研究了松辽盆地十屋断陷储集层类型自上而下的变化特征。结果表明， 上白垩统的泉头组为正常砂岩储集层，下白垩统的登娄库组和五家子组为致密砂岩储集层，孔隙度和渗透率呈非线性相关。将登娄库组和五家子组的储层物性与国外典型致密砂岩裂隙—孔隙型储集层进行了对比分析，认为本区下白垩统登娄库组和五家子组的储集层类型为致密砂岩储集层，并采用四种方案对本区的储集层进行分级评价。本区深部和浅部储集层存在着明显的差别，泉头组的储油空间为孔隙型，五家子组的储油空间为裂隙－ 孔隙型，登娄库组的储油空间介于两者之间。因此，裂隙的发育特征较大程度地影响了本区油气的富集部位

The change of clastic reservoir types with depth.

Having studied the change of reservoir type in Shiwu faultdown, it is concluded that Quantou Formation deposited in the Late Cretaceous belongs to normal sandstone reservoir rocks, both Denglouku Formation and Wujiazi Formation in Early Cretaceous are tight sandstone reservoir rocks. The relationship between the porosity and permeability is nonlinear. It is suggested that the reservoir types of Denglouku Formation and Wujiazi Formation are the tight sandstone reservoir rocks in terms of typical tight sandstone (the fractured porous reservoir rocks) abroad. At last, the reservoir rocks in this area are evaluated by four methods. There are significant differences between the deep and shallow reservoir beds: the reservoir space of Quantou Formation is a pore type, the reservoir space of Wujiazi Formation is a fractured pore type, and that of Denglouku Formation is a type between the above two. Thus the characteristics of pore development affects greatly the part of oil/gas accumulation in respective formations.