id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-29288	Xu, Bojun	Sealing Performance Analysis of End Spring Packer	2025	8	.pdf	application/pdf	4240	205	48	Abstract: Oil exploitation tends to occurs in high-temperature and high-pressure environments, leading to sealing failure of rubber cylinders after long-time operation. Addressing the harsh downhole conditions, Wang [6] enhanced the corrosion resistance of rubber cylinder by optimizing its rubber material, achieving a packer rubber cylinder capable of withstanding temperatures up to 154 °C, pressure resistance under 79 MPa, and providing sustained sealing performance.	cache/ajst-29288.pdf	txt/ajst-29288.txt