id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-26734	Yao, Kunpeng; Liu, Bin; Yao, Jianlin	Analysis of Cuttings Backflow and Flow Path Erosion of Different Size Core Tools	2024	8	.pdf	application/pdf	3338	129	61	It is concluded that in the process of rock coring, it is necessary to select a larger size coring tool, reasonably increase the injection displacement, optimize the inlet and outlet flow channels and wall structure, avoid excessive increase in erosion rate, and reduce the impact of erosion effect on the fatigue life of drill teeth and wall. Keywords: Rock coring; Rock carrying capacity; Erosion rate; Annular velocity; Bottom-hole velocity.	cache/ajst-26734.pdf	txt/ajst-26734.txt