E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
255/28
E21B 17/10 (2006.01)
Patent
CA 1188677
Abstract of the Disclosure A well wall engaging member such as a reamer or stabil- izer in which the wall engaging parts are releasably retained on the body of the device by mating undercut surfaces between the body and the wall engaging member and are released from the body by moving the wall engaging members lengthwise to a non-undercut section of the body and the wall engaging members are held against such lengthwise movement by a retainer pad secured to the body and blocking longitudinal movement of the wall engaging member.
429699
Blau Harlan E.
Elmore Jimmy D.
Gh Texas Reamer Inc.
Smart & Biggar
LandOfFree
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