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宋芳屯油田葡萄花油层呈现中～低渗透性特征，容易受到伤害． 分析潜在的损害因素，可以有效地预防油层损害． 研究表明，伊利石、高岭石以及蒙皂石－ 绿泥石混层粘土是伤害储层的主要粘土矿物，平均质量分数为６ ．９５ ％ ． 储层平均阳离子交换量为１０ ．６８ ×１０ － ５ ｍ ｏｌｇ ，岩石体积膨胀为１１１ ％ ，呈现潜在水敏损害，南部地区高于北部地区． 酸敏损害表现为高岭石、绿泥石以及蒙皂石－ 绿泥石混层粘土、方解石和长石产生二氧化硅凝胶、氟铝酸盐、氢氧化铁胶体、氟硅酸盐和氟化钙沉淀，以及长石骨架颗粒解体． 主要渗流孔喉半径小于８ μｍ ，粒径小于５ μｍ 的地层微粒平均质量分数为７ ．１９ ％ ，潜在的微粒运移损害严重． 其它潜在损害因素包括井筒和地层内碳酸钙结垢以及石蜡沉淀等．
Songfangtun Putaohua oil layer shows medium to low permeability characteristics, vulnerable to injury. Analysis of potential damage factors can effectively prevent reservoir damage. Research shows that illite, kaolinite and smectite-chlorite mixed clay are the main clay minerals that harm the reservoir with an average mass fraction of 6. 95%. The average cation exchange capacity of the reservoir is 10. 68 × 10 - 5 m olg. The volume of rock expanded by 111%, indicating potential water damage. The southern part is higher than the northern part. Acid sensitive damage is manifested as kaolinite, chlorite, and smectite-chlorite mixed clay, calcite and feldspar to produce silica gel, fluoroaluminate, ferric hydroxide colloid, fluorosilicate and Calcium fluoride precipitation, and feldspar skeleton particles disintegration. The main seepage pore throat radius of less than 8 μm, particle size less than 5 μm average particle mass fraction of 7. 19%, potential damage to the migration of particles serious. Other potential damage factors include calcium carbonate scaling in wellbore and formation and paraffin precipitation.