id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-3250	Wang, Guoqiang; Guo, Liang	Structural Optimization Design of Modular Double Drill Pipe	2022	8	.pdf	application/pdf	5509	279	61	Keywords: Gas lift positive circulation drilling technology, Double drill pipe, Technical analysis, Structural optimization, Application Trends. 1. Introduction Gas lift positive circulation drilling technology is a method of gas lift drilling by using double drill pipe and other auxiliary drilling equipment.	cache/ajst-3250.pdf	txt/ajst-3250.txt