鄂尔多斯盆地高桥区块盒8层地质特征与改造效果分析

Analysis for Geological Characteristics and Modification Effect about He 8-Storey of GaoQiao Block of Ordos Basin

鄂尔多斯盆地陕北高桥区块盒8储层具有低压低渗致密砂岩气藏的特点,砂体由北向南多层叠置,横向连片性较好。储层压裂改造以形成具一定导流能力的较长水力裂缝为主。通过对鄂尔多斯盆地陕北高桥区块储层地质特征和压裂改造效果的分析,总结出该层压裂改造的最佳参数选择。并提出致密砂岩气层改造的合理建议,对该类储层的后续勘探开发有比较实用的借鉴意义。

Ordos region of northern Shaanxi-He8 reservoir of Gaoqiao area has feature of low pressure and low permeability,sand body of which is overlaid multi-layer from north to south and linked in lace better horizontally.The main fracturing for reservoir is a longer hydraulic fracture to form certain conductivity.Based on analysis for geological features and fracture effect of Ordos region of northern Shaanxi Gaoqiao area,the best parameters of fracturing reform are summed up.Finally,a reasonable proposal about technical development for modification of tight sandstone of gas reservoir is suggested which has a more practical reference sense for following-up exploration and development to this kind of reservoir.