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摘要:
Regulating rheological properties of water-based drilling fluids has always been a hot topic.This paper proposed a new method for regulating rheological properties of water-based drilling fluids by ultrasonic field.The experimental results showed that the ultrasound increased the viscosity and yield point of bentonite suspension by reducing the particle size of clay,destroying the network structure between clay particles,increasing the mud yield and the cation exchange capacity of bentonite,and promoting the hydration dispersion of bentonite.The change of rheological property showed a memory effect at room temperature and high temperature.Besides,the ultrasonic energy affected the network structure be-tween clays and polymer chains,thus regulating the theological properties of the bentonite-polymer system.For two types of drilling fluids investigated,the rheology of the poly-sulfonate drilling fluid was regulated by damaging the grid structure between additives and clays by low-power ultrasound and reducing the clay particle size by high-power ultrasound,while the rheology of the deep-water drilling fluid was mainly regulated by disentangling the spatial grid structure between additives.Additionally,ultrasound showed no effect on the lubricity,inhibition and stability of drilling fluids,which proved the feasibility of ultrasound to regulate theological properties of water-based drilling fluids.
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篇名 Investigation of regulating rheological properties of water-based drilling fluids by ultrasound
来源期刊 石油科学(英文版) 学科
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年,卷(期) 2021,(6) 所属期刊栏目 Petroleum Engineering & Mechanics
研究方向 页码范围 1698-1708
页数 11页 分类号
字数 语种 英文
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石油科学(英文版)
季刊
1672-5107
11-4995/TE
大16开
北京市学院路20号石油大院15楼317室
2004
eng
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1221
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