Highly-antiwear drill pipe wear-resisting belt flux-cored wire

Abstract

The invention belongs to the field of welding materials, in particular to a highly-antiwear drill pipe wear-resisting belt flux-cored wire. With the development of the petroleum drilling technology, the abrasion of casing pipes is more and more prominent. The wear of the casing pipes may reduce the collapse pressure strength and internal pressure strength of casing strings, and more seriously, cause to the collapsing, deformation and leakage of the casing strings and even scrapping of a whole well. The invention provides a highly-antiwear drill pipe wear-resisting belt flux-cored wire, which comprises the following deposited metal chemical components in percentage by mass: 15.0 to 16.0 percent of Cr, 5.5 to 6.0 percent of Mo, 3.5 to 4.0 percent of W, 0.9 to 1.1 percent of Y, 0.7 to 0.9 percent of C, 3.5 to 4.5 percent of B, 1.5 to 2.0 percent of Si, 0.8 to 1.0 percent of Mn and the balance of Fe. Compared with the friction coefficient of the ordinary welding wire, the friction coefficient of the highly-antiwear drill pipe wear-resisting belt flux-cored wire is reduced by 24 percent, and the abrasion of the casing pipes is reduced by 62 percent substantially; and the manufacturability is good. By the highly-antiwear drill pipe wear-resisting belt flux-cored wire, the abrasion of the casing pipes in drilling wells can be reduced substantially; and the highly-antiwear drill pipe wear-resisting belt flux-cored wire can be widely applied to the wear prevention and wear resistance of sliding friction dual components under other harsh operating conditions besides the highly-antiwear drill pipe wear-resisting belt flux-cored wire can be used for overlaying metal wear-resisting belts on petroleum drilling pipes.

Description

Technical field [0001] The invention belongs to the field of welding materials, and in particular relates to a high-friction wear-resistant cored welding wire for drill pipes. Background technique [0002] Overlay welding of metal hardbands on oil drill pipe joints is one of the effective measures to reduce the wear of oil drill pipes and casings. In recent years, the new metal wear-resistant belt material widely used and developed at home and abroad has the characteristics of wear-resistant and friction-reducing, which can protect the drill pipe and the casing. For example, ARNCO 100XT, ARNCO 200XT, ARNCO 300XT produced by American Anke Technology Company and Nate 101J, Nate 303J, Nate 505J and other drill pipe hard-wearing flux-cored welding wires with independent intellectual property rights developed and produced by Xi'an Nat Petroleum Technology Co., Ltd. product. [0003] With the development of ultra-deep wells, highly deviated wells, extended reach wells and horizontal dr...

AI Technical Summary

Problems solved by technology

Casing wear will reduce the anti-collapse and internal pressure strength of the casing string if it is light, and cause collapse, deformation and leakage of the casing string if it is serious, and even cause the entire well to be scrapped

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