E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 10/30 (2006.01) E21B 10/10 (2006.01) E21B 10/28 (2006.01)
Patent
CA 2342615
A hole opener (10) having a tubular body (11) with threaded ends (12, 14) for connection in a drill string. The hole opener provides slots or grooves (21, 21') along its longitudinal axis (16) into which are inserted cutter arm support members (30, 30', 60, 60') which may be screwed, (43) pinned (68) or bolted (168) to the body (11) to permit easy replacement of the support arms (30). The grooves (21, 21') in the body (11) of the hole opener (10) also provide a spindle (20) spatially aligned with the groove (2l, 21') to support the proximal end of a rotatable journal body (28) supporting the cutter body (25) providing hard facing for grinding of the bore hole to be enlarged. The support amps {30) at their distal end provide further support for the cutter journals (70). The hole opener (10) also may provide pressure compensated lubrication mechanism (71) to provide grease to the bearing surfaces to increase their service life and thereby extend the useful life of the tool.
La présente invention concerne un élargisseur (10) comprenant un corps tubulaire (11) aux extrémités filetées (12, 14) destinées à être reliées à un train de forage. L'élargisseur est muni, le long de son axe longitudinal (16), de fentes ou rainures (21, 21') dans lesquelles sont insérés des éléments bras de support (30, 30', 60, 60') de fraise, qui peuvent être vissés (43), goupillés (68) ou boulonnés (168) au corps afin de permettre le remplacement aisé des bras de support (30). Les rainures (21, 21') formées dans le corps (11) de l'élargisseur (10) constituent également un axe (20) qui, en alignement spatial avec la rainure (21, 21'), permet de supporter l'extrémité proximale d'un corps de tourillon rotatif (28) supportant le corps de fraise (25) qui constitue une surface dure pour le dégrossissage du trou de forage à élargir. Les bras de support (30), en leur extrémité distale, fournissent un support supplémentaire aux tourillons (70) de fraisage. L'élargisseur (10) peut également inclure un mécanisme de lubrification (71) à compensation de pression qui distribue un lubrifiant aux surfaces de roulement afin d'augmenter leur durée de vie utile et, par conséquent, celle de l'outil également.
Riches Mckenzie & Herbert Llp
Rives Allen Kent
Tiger 19 Partners Ltd.
LandOfFree
Hole opener with multisized, replaceable arms and cutters does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hole opener with multisized, replaceable arms and cutters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hole opener with multisized, replaceable arms and cutters will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1689324