Articulated wireline hole finder
OwnerGuy Wheater, Stuart Huytoninventors
Life of this patent
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Abstract
The articulated wireline hole finder is a modular device which attaches to the bottom of a wireline logging tool-string to aid conveyance down irregular shaped and/or deviated boreholes which possess features such as ledges, washouts, and contractions, that might otherwise terminate full descent of the tool-string to the bottom of the borehole and thereby compromise the wireline data acquisition objectives. Elements of the articulated wireline hole finder may include a low friction roller nose assembly and spacer sub, an articulated spring joint, that transfers tool-string weight and directs lateral movement of the roller nose towards hole center, and a pair of five arm centralizers that possess a wide dynamic range.
Claims19
An articulated wireline hole finder, comprising:
- a low-friction roller nose, wherein the low-friction roller nose comprises:
- a central mandrel, wherein the central mandrel further comprises at least one slot located on an outer surface of the central mandrel;
- and
- at least one sub-assembly, wherein the at least one sub-assembly attaches to the central mandrel through the at least one slot and wherein the at least one sub-assembly comprises at least one wheel, wherein each of the at least one wheel are mounted in profiled wheel retainers that bolt onto the central mandrel;
- and
- an articulated spring joint, wherein the articulated spring joint connects to the low-friction roller nose through a sub spacer.
Dependencies are inferred from the claim text.