Replaceable sleeve drill collar stabilizer

Details Replaceable sleeve drill collar stabilizer Replaceable sleeve drill collar stabilizer

E - Fixed Constructions

21

B

255/28

E21B 17/10 (2006.01)

Patent

CA 1090325

REPLACEABLE SLEEVE DRILL COLLAR STABILIZER Abstract of the Disclosure A replaceable sleeve drill collar stabilizer is provided having a metal mandrel with a flow passage therethrough. A threaded box is located at the upper end of the metal mandrel and a threaded pin is located at the lower end of the metal mandrel. A replaceable sleeve is positioned around the metal mandrel. The replaceable sleeve includes longitudinally extending stabilizer sections. Means for preventing relative rotation between the replaceable sleeve and the metal mandrel are provided including a locking element that extends through said sleeve into a mating indentation in the metal mandrel. A weld rigidly connects the locking element to said replaceable sleeve. Worn sleeve replacement is accomplished by removal of the small amount of weld joining the locking element to the sleeve. -1a-

326881

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