Impacts of polypropylene glycol (PPG) additive and pH on tribological properties of water-based drilling mud for steel-steel contact
作者： Huaping Xiao , Shuhai Liu , Yu Chen , Dongxiao Han , Deguo Wang
DOI: 10.1016/J.TRIBOINT.2017.02.025
关键词:
摘要: Abstract In this study, three types of polypropylene glycols (PPGs) were added in basic mud as additives. Different chemicals to adjust the pH value mud. PPGs found increase viscosity and reduce API fluid loss original drilling Impacts PPG on tribological properties evaluated for steel-steel contact. Experimental results indicated that lower molecular weight had better friction reduction anti-wear ability. When excessive amount was added, wear became worse, which attributed aggregation hard particles with presence molecules. terms pH, both generally increased
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