The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 12, 2025
Filed:
Feb. 12, 2025
Southwest Petroleum University, Sichuan, CN;
Dezhi Zeng, Sichuan, CN;
Chengxiu Yu, Sichuan, CN;
Jiancheng Luo, Sichuan, CN;
Qinying Wang, Sichuan, CN;
Hanwen Zhang, Sichuan, CN;
Yuchen Xi, Sichuan, CN;
Guangguang Xiang, Sichuan, CN;
Ruikang Ke, Sichuan, CN;
SOUTHWEST PETROLEUM UNIVERSITY, Chengdu, CN;
Abstract
An anti-corrosion wear-resistant drill pipe and a preparation method thereof are provided. The anti-corrosion wear-resistant drill pipe includes a drill pipe main body, sacrificial anodes and wear-resistant belts. The sacrificial anodes include a first sacrificial anode, a second sacrificial anode, a third sacrificial anode and a fourth sacrificial anode, which have an open-circuit potential of −1.31 to −1.10 V, an operating potential of −1.21 to −0.98 V and a current efficiency of greater than 80% in a drilling fluid corrosive environment with a density of 1.2-2.5 g/cm, a chloride ion content of 1,200-180,000 mg/L, and a temperature of 30-120° C. The wear-resistant belts include a first wear-resistant belt, a second wear-resistant belt and a third wear-resistant belt, each having a surface hardness of greater than 750 HV.