Improve the probability of casings and liners reaching TD when rotation cannot be applied.

The NaviREAM is a casing reamer shoe that features an eccentric profiled nose. When inserted into the tool, the relative rotational motion from reciprocation can be used to orientate the nose over or past obstructions.

Making it better

As part of the NaviGATOR series, the NaviREAM provides end of string rotation where the full string cannot be rotated.

Rides over ledges or orients to path of least resistance. Installs simply. Easy to use. Requires no operator.


Available in most standard casing/liner versus open-hole combinations

Drill out ID matches casing being run

Flow by areas have been maximized for circulation and cementation

Strength to suit casing specifications

Supplied with customer specified casing connections

Continuous ratchet with higher strength than connection


Casing SizeODIDDrillout SizeNose Profile
4.500 inches5.636 inches4.000 inches3.750 inchesEccentric
4.500 inches5.750 inches4.000 inches3.750 inchesEccentric
7.000 inches8.125 inches6.276 inches6.000 inchesEccentric
7.000 inches8.250 inches6.276 inches6.000 inchesEccentric
13.375 inches14.625 inches12.413 inches12.413 inchesEccentric


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