Yu Fan, Jianhua Guo, Xihui Hu, Rui Wang*, Weiqiang Xu
FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.9, pp. 2431-2447, 2023, DOI:10.32604/fdmp.2023.027604
Abstract Drilling technologies based on oil-based drilling fluids and strong inhibitory saltwater fluids are affected by drawbacks such as downhole accidents where sticking and wellbore instabilities occur. Existing polyamine drilling fluids also exhibit problems such as easy decomposition and poor inhibition performances. In order to mitigate these issues, additives can be used, such as polyamine inhibitors and the synthesis of nanometer filtrate reducers. Tests conducted in the frame of this study with a polyamine drilling fluid and such additives show that this fluid has the same inhibitory, plugging, lubricating, and wellbore-stability performances as oil-based drilling fluids. However, it has long-term anti-wear… More >
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