Abstract: Comprehensive evaluation in Bozhong 342/4 oilfield has been made via software, static and dynamic scaling experiments. The results show that incompatibility between the injection water and formation water and calcium carbonate scale would produce during injection process, it’s scaling reached 1 199 mg/L. When scaling of 800 mg/L, core permeability damage up to 32%. Scale studies of the six kinds of inhibitors suggest that, for this oilfield, inhibitor PBTCA has better antiscaling effect, staticscaling reduced by 85% and core permeability damage reduced approximately by 13%.

Key words: Injection water,    ,  Formation water,    ,  Compatibility,    ,  Scale,    , Core permeability damage,    , Inhibitor

摘要： 根据渤中3 4 灢 2 / 4油田注入水与地层水特征, 通过结垢软件预测了注入水与地层水的结垢趋势, 静态结垢实验得到了注入水与地层水的结垢量, 动态结垢实验评价了注入水结垢对岩心渗透率的伤害程度。结果表明,该油田注入水与地层水相容性较差, 注入过程中会产生碳酸钙垢, 最大结垢量为11 9 9m g / L, 结垢量为8 0 0m g / L时, 岩心渗透率伤害程度较大, 达到3 2%。对比了有机磷酸和聚合物两大类共6种阻垢剂的阻垢效果, 确定了针对该油田阻垢效果较好的为P B T CA阻垢剂; 加入该阻垢剂后, 静态阻垢率达8 5%, 动态实验中岩心渗透率的伤害程度降低到1 3%。

关键词: 注入水,    ,  地层水,    , 相容性,    , 结垢,    ,  渗透率伤害,    , 阻垢剂