System, method and apparatus for fin cutter for downhole tool
AssigneesBlack Diamond Oilfield Rentals LLC, Erdos Miller, Inc.
InventorJohn MacMurrough
Life of this patent
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Abstract
A system for trimming fins on a downhole tool is disclosed. The system includes a jig that mounts to the shaft of the tool. A linear aperture is formed in the jig and has a closed end, an open end, and is sized to axially receive a single fin of the tool. A channel is located on an underside of the jig beneath the aperture. The channel has an inner radius of curvature. The inner radius of curvature is substantially similar to an outer radius of curvature of the shaft. The channel can form a friction lock on the exterior of the shaft and be removably attached to the shaft without fasteners. The channel is arcuate and has a selected arcuate span.
Claims17
A system for trimming a fin on a downhole tool, the downhole tool having an axis, the fin radially protrudes from a shaft (202) of the downhole tool relative to the axis (A), the system (20) comprising:
- a jig (22) configured to be mounted to an exterior of the shaft, the jig (22) comprises a top (24), a bottom (26) having bottom edges (34), the bottom is radially spaced apart from the top (24) relative to the axis (A), and the jig comprises a front (28) and a rear (30) that is axially spaced apart from the front (28);
- an aperture (32) that is linear and formed in the jig (22), the aperture (32) extends in an axial direction between the top (24) and the bottom (26), and the aperture (32) has a closed end (52), an open end (54), and is sized to axially receive the fin (204) of the downhole tool (200) such that a portion of the fin extends radially beyond the top (24);
- a channel (36) that is semi-cylindrical and located on an underside of the jig beneath the aperture (32), the channel extends between the bottom edges (34), and the channel is configured to be removably attached to the shaft;
- and
- the channel (36) comprises an arcuate span relative to the axis (A);
- the aperture and the channel are directly connected together.
Dependencies are inferred from the claim text.