Schlumberger

Product Sheet: Standoff Sub

Date: 5/1/2012

Download: Standoff Sub (0.14 MB PDF)

Decreases drilling tool wear by reducing contact with borehole walls

The Schlumberger standoff sub has a slightly larger OD than the nominal tool OD and can be strategically placed on drilling tools to reduce wall contact and the resulting wear that occurs during directional drilling.

The Hydra-Jar AP double-acting hydraulic drilling jar can be modified for a directional application by replacing three regular subs with standoff subs, decreasing the jar’s contact with the borehole wall, thereby reducing wear on the Hydra-Jar AP’s OD.

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