吴起西区三叠系长63储层特征及对油藏开发的影响

Characteristics of the Triassic Chang 6_3 Reservoir in the Western District of Wuqi and Its Impact on Reservoir Development

鄂尔多斯盆地吴起西区三叠系长63储层矿物及结构成熟度低,残余粒间孔发育,孔喉类型以微喉为主,渗流通道连通性差,局部区域发育构造裂缝及微裂缝,一定程度提高了储层的储渗性能。通过开展吴起西区长63储层储集特征及非均质性条件研究,明晰储层沉积微相的区域分布,分析相关储层特征对油藏开发特征及开发规律的影响,对于吴起西区长63油藏合理开发技术政策的制定和开发规律的认识,具有一定的现实和指导意义。

The mineral and structural maturity of the Triassic Chang 6_3 reservoir in the western area of Wuqi,Ordos Basin is low,with residual intergranular pores developed.The pore throat type is mainly micro throat,and the connectivity of the seepage channel is poor.Structural and micro fractures are developed in local areas,which to some extent improves the reservoir's permeability and storage performance.By conducting research on the reservoir characteristics and heterogeneity conditions of the Chang 6_3 reservoir in the western region of Wuqi,the regional distribution of sedimentary microfacies in the reservoir is clarified,and the impact of relevant reservoir characteristics on the reservoir development characteristics and laws is analyzed.This has practical and guiding significance for the formulation of reasonable development technology policies and understanding of development laws for the Chang 6_3 reservoir in the western region of Wuqi.