鄂阳页1井陡山沱组页岩储层含气性及可压性评价

Evaluation of Sinian Doushantuo formation shale gas content and fracturing property of Eyangye1 well in Hubei province

我国南方海相页岩气储层主要有奥陶系无缝组-志留系龙马溪组、寒武系牛蹄塘组和震旦系陡山沱组,其中震旦系陡山沱组页岩气是目前我国发现的我国最古老地层的页岩气层,通过鄂阳页1井钻探获得了陡山沱组良好的页岩气显示,优质页岩厚度141m,现场岩心解析气含量可达1.8t/m^3,通过对比发现陡山沱组页岩储层特征与龙马溪组储层特征差异性较大,本文通过对陡山沱组页岩储层的含气性及可压性进行评价,以期为今后陡山沱组页岩气储层勘探开发及压裂改造提供指导建议。

The mainly marine shale gas formations are Ordovician aschiza-Longmaxi Silurian and Cambrian Niutitang and Sinian Doushantuo in south China. The oldest strata of shale gas are Doushantuo formation of Sinian that was discovered until now in China. Through Eyangye 1 well in Hubei,we find well shale gas indication in Doushantuo formation. The thickness shale gas formation is 141 m and the core desorption gas content is 1.8 t/m^3. Through comparison of the shale reservoir characteristics difference of Doushantuo formation and Longmaxi formation, after analyzing the shale gas content and fracturing evaluation of Doushantuo formation, we want to give some well provision and advice to future exploration and reservoir fracture of this same shale gas formation.