Stop Collar Friction Clamping Device
AssigneeBaker Hughes Incorporated
InventorsShawn A. Olsen, Roger R. Steinsiek, James C. Hunziker
Life of this patent
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Abstract
A stop collar assembly used for axially securing and/or to resist axial sliding of a downhole tool device. The assembly provided on a housing of the downhole tool and includes a generally annular ring having an inner circumference beveled outward proximate to the ring edge. A clamp ring having a raised portion on its outer surface is disposed adjacent and substantially coaxial with the annular ring. Pushing the annular ring against the clamp ring compresses the clamp ring onto the housing to resist axial sliding of the annular ring.
Claims17
A clamping assembly for use in a downhole tool comprising:
- an annular wedge ring engagable around a portion of the tool;
- a first annular stop ring contacting the annular wedge ring along an interface angled with respect to the axis, so that when the annular stop ring is axially urged against the wedge ring, the wedge ring is compressively coupled to the tool.
A downhole tool disposable in a wellbore tubular comprising:
- a mandrel having an axis;
- a centralizer comprising:
- first and second base members circumscribing the mandrel disposed axially apart;
- and
- arms having first and second ends respectively coupled with the first and second base members and mid portions bowing radially outward from the mandrel;
- first and second stop collar assemblies engageable to the mandrel and respectively adjacent the first and second base members, the stop collar assemblies each comprising:
- a stop ring engaged with a wedge ring along an interface that is angled along a line extending from the axis to the outer circumference of the wedge ring's mid portion, so that a lateral force pushing the stop ring towards the wedge ring mid portion compressively couples the wedge ring to the mandrel.
Dependencies are inferred from the claim text.