Method of making sleeved drill pipe

Details Method of making sleeved drill pipe Method of making sleeved drill pipe

1982-04-12

1984-07-10

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

29460, 228175, 228176, 264262, B21D 3900, B23P 1904

Patent

active

044584040

ABSTRACT:
A one-piece metal wear sleeve, circumferentially homogeneous, is secured by epoxy to the outer periphery of a drill pipe. The inner diameter of the sleeve is less than the outer diameter of tool joints at the end of the drill pipe. The sleeve is centrifugally cast of two materials, including a tough, strong material such as an iron alloy at its inner portion and a hard non-abrasive wear resistant material such as alloy steel at its outer portion to resist wear on the sleeve, e.g. when it is run in open hole or in a cased hole. The outer portion is homogeneous and has a smooth outer periphery so as to reduce wear on the casing when the pipe is run in cased hole.

REFERENCES:
patent: 2180695 (1939-11-01), Rembert
patent: 2295873 (1942-09-01), Stone
patent: 2295874 (1942-09-01), Stone et al.
patent: 3195927 (1965-07-01), Kimbrell
patent: 3411837 (1968-11-01), Schellstede
patent: 4153656 (1979-05-01), Bunyan
patent: 4171560 (1979-10-01), Garrett
patent: 4175311 (1979-11-01), Bunyan
Industrial Products Division, United States Pipe and Foundry Co., Oct. 1975, pp. 20, 21.

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