摘要
玛北1井四开盐间钻遇高钙盐水持续侵入,钻井液的流变稳定性丧失。经过室内模拟井浆实验,转化欠饱和NaCl-KCl盐水聚磺体系为高硫酸根盐水聚磺体系,降低并抑制钻井液中游离钙离子的浓度,使用海泡石抗盐土和聚阴离子纤维素等处理剂增强体系的悬浮稳定性和胶体稳定性,经过在玛北1井四开现场的应用,很大程度上改善了钻井液体系的各项性能,顺利完成了四开的钻井施工任务。
The continuing influx of calcium-rich brine in the fourth interval of Mabei-1 contributes to the contamination of drilling fluids.Poly-sulfonic brine mud system' substitution on under-saturated NaCl-KCl brine poly-sulfonic mud system made the free calcium ion concentration decreased.Sepiolite slat resistance bentonite and poly-anionic cellulose improve the performance of suspension stability and colloidal reliability.Application on fourth interval of Mabei-1 was successful.
出处
《钻井液与完井液》
CAS
北大核心
2013年第6期88-90,98,共3页
Drilling Fluid & Completion Fluid
关键词
钻井液
抗高钙
高硫酸根
海泡石
现场应用
玛北1井
The drilling fluids
Anti Calcium-rich
Sulfate radical-rich
Sepiolite
Field application
Well Mabei-1
