阜东斜坡区头屯河组短期旋回不同结构类型内储层非均质性研究

探讨准噶尔盆地阜东斜坡区头屯河组短期旋回不同结构类型内储层非均质性,为后期储集层精细开发以及采油率的提高提供理论指导。主要利用岩心、测井以及地震资料,对两个重点短期旋回不同结构类型中的非均质性特征进行详细分析,发现SSC4主要发育A2和C1两种结构类型;SSC7发育C1和C2两种结构类型,且SSC7的C1结构类型中储集砂体非均质性程度中等-强,为最有利勘探目标;次要勘探目标为SSC4的A2和C1两种结构类型中较强非均质性的储集砂体,SSC7的C2结构类型中储集砂体非均质性程度中等,但本身物性较差,勘探意义不大。这为研究区头屯河组的勘探提供地质指导和依据。

Heterogeneity of reservoirs of different compositional types of short-term cycles in the Toutunhe Formation of the Fudong slope area

This paper discusses the degrees of reservoir heterogeneity in short-term cycles in east of the Fukang sag, eastern Junggar Basin to offer theoretical evidence for the development of the reservoirs. The reservoir heterogeneity in different compositional types of two major short-term cycles is analyzed using data of cores, logging and seismology. It is found that there are A2 and C1 compositional types in SSC4, and C1 and C2 compositional types develop in SSC7, respectively. The C1 compositional type in SSC7 is the favorable exploration target with moderate to very strong reservoir heterogeneities, A2 and C1 compositional types in SSC4 are the secondary target with relatively stronger reservoir heterogeneities,and C2 compositional type in SSC7 has moderate reservoir heterogeneities, which are not the target due to its poor physical properties. All of these provides geological evidence for further explora-tion in Toutunhe Formation of the Fudong slope area.