The reservoirs in Baota Formation of Middle Ordovician in South Sichuan are characterized by low porosity and low permeability and belong to a fractured type.
川南地区中奥陶统宝塔组储层具低孔低渗特征，属裂缝性储集类型。
A novel solid residue-free fracture fluid system suitable to middle well temperature was developed for the geological feature of low porosity and low permeability in Jilin Oilfield.
针对吉林油田低孔、低渗的特点，开发了适合中等井温的新型无固相压裂液体系。
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