US 9,810,030 B2
Mud motor with integrated abrasion-resistant structure
Aaron W. Logan, Calgary (CA); Kevin Kalman, Okotoks (CA); Vincent Gille Berube, Okotoks (CA); and Daniel W. Ahmoye, Calgary (CA)
Assigned to Evolution Engineering Inc., Calgary, CA (US)
Appl. No. 14/894,322
Filed by EVOLUTION ENGINEERING INC., Calgary (CA)
PCT Filed Jun. 3, 2014, PCT No. PCT/CA2014/050512
§ 371(c)(1), (2) Date Nov. 25, 2015,
PCT Pub. No. WO2014/194420, PCT Pub. Date Dec. 11, 2014.
Claims priority of provisional application 61/830,524, filed on Jun. 3, 2013.
Prior Publication US 2016/0108683 A1, Apr. 21, 2016
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 17/10 (2006.01); E21B 41/00 (2006.01); E21B 17/00 (2006.01); E21B 4/02 (2006.01)
CPC E21B 17/10 (2013.01) [E21B 4/02 (2013.01); E21B 17/00 (2013.01); E21B 41/00 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A housing for a downhole component, the housing comprising a collar having a pair of longitudinal ends spaced apart from each other and a bore therethrough, the collar comprising:
(a) a framework; and
(b) a plurality of discrete bodies spaced about the framework, a portion of each of the plurality of discrete bodies protruding above a surface of the framework;
wherein:
the framework and the plurality of discrete bodies extend between the longitudinal ends of the collar;
the framework comprises a plurality of rings with opposed side faces and at least some of the discrete bodies are engaged between side faces of adjacent ones of the plurality of rings;
the plurality of rings comprises a pair of end rings and at least some of the plurality of discrete bodies are positioned between the end rings; and
each of the pair of end rings comprise an outer side face and an opposed inner side face with the inner side faces facing each other, each of the inner side faces including a plurality of spaced inner side face end ring surface depressions thereon, wherein each inner side face end ring surface depression is configured to receive a portion of one of the plurality of discrete bodies therein;
wherein at least one of the plurality of rings with opposed side faces is tapered in thickness such that the outer part, furthest from the bore, is thicker than the inner part, closest to the bore.