Savonnières carbonate

Savonnières limestone is a mono-mineralic, calcitic, layered oolithic limestone belonging to the Oolithe Vacuolaire (France). Its pore structure contains 4 types of porosity: inter-granular and intra-oolithic microporosity, and inter- granular and micro-connected macroporosity (hollow ooliths). The hollow ooliths are only connected to the other macro-pores by microporosity in the oolith-shells. Depending on local variations, the permeability ranges from 115 mD to more than 2000 mD (based on TinyPerm mini-permeameter measurements), and porosity ranges from 22% to 41%.

萨沃尼耶尔灰岩（Savonnières limestone）属于法国空泡鲕灰岩（Oolithe Vacuolaire），为单矿物方解石质层状鲕状灰岩。其孔隙结构包含四类孔隙：粒间微孔隙与鲕内微孔隙，以及粒间大孔隙与微连通大孔隙（空心鲕粒）。空心鲕粒仅通过鲕粒壳内的微孔隙与其余大孔隙相连。受局部地质变化影响，其渗透率区间为115毫达西至2000毫达西以上（基于TinyPerm微型渗透率仪的测量数据），孔隙度介于22%至41%之间。