Based on physical phenomenon of Weicheng Oilfield reservoir,influence factors of acidizing:influence of acid sludge,secondary precipitation of iron ion and influence of acid liquid discharged,were analyzed.
从卫城油田的油藏物性等方面出发 ,分析了制约其酸化效果的因素 :酸渣的影响、铁离子二次沉淀的影响 ,残酸返排的影响。
参考来源 - 多元复合酸酸化工艺的应用·2,447,543篇论文数据，部分数据来源于NoteExpress
The solubility of gypsum will change as the concentration of acid solution changes. When acidizing treatment gypsum-containing formation, the secondary precipitation be produced.
由于石膏在酸液中的溶解度随酸液浓度而改变，酸化含石膏地层时将产生二次沉淀，严重影响酸化效果。
Formation damage caused by secondary precipitation of ferric ion is a potential problem in acidizing and excessive iron level would bring a series of chain reaction and vicious cycle.
在酸化作业中，铁离子的二次沉淀所造成的地层伤害是一个潜在问题，铁含量过高会出现一系列连锁反应和恶性循环。
Primary nucleation was the main nucleation mode in the precipitation process. However, secondary nucleation cannot be ignored when the slurry density is high, and the supersaturation is low.
动力学研究表明，在硝酸硫胺沉淀结晶过程中，初级成核是主要的成核方式，当晶浆密度较高且过饱和度很低时，二次成核不能忽视。
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