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ROTARY SUBS
Morgan Downhole Tools’ Rotary Subs are made from High strength (medium carbon) steel 4145 H hardened and tempered to API specifications. All connections are kemplated to prevent galling.


TECHNICAL ADVICE ON ROTARY SUBS

Big-to-Reduce outside diameter subs are used as crossover subs to change one connection to another and fitting two different outside diameters.

 

Morgan Downhole Tool’s Crossover Specifications

 

Straight outside diameter subs are used as crossover subs to change from one connection to another and fitting same outside diameters.

 
Lift Subs are subs with an upset or shoulder on the upper end, screwed into drill collars to provide a positive grid for elevators.


Saver subs fits in the drill stem between the Kelly and the drill pipe and prevents wear to the kelly’s thread. The kelly subs are equipped with either rubber or brass to prevent the blowout preventer system and casing wear.

 
How to Order

Type of Kelly sub required

Length - Overall

Largest diameter required

ID required

Size and Type of upper and lower connections, indicate pin or box

On reduced section subs – indicate both OD’s required

On lift subs – indicate bottleneck w/18” tapered shoulders or wafer top

On Kelly saver subs – indicate whether or not rubber sleeve is required.

Top drive subs

 

How to Order

1. Type of required

2. Length - Overall

3. Largest diameter required

4. ID required

5. Size and Type of upper and lower connections, indicate pin or box

6. On reduced section subs – indicate both OD’s required

7. On lift subs – indicate bottleneck w/18” tapered shoulders or wafer top

8. On Kelly saver subs – indicate whether or not rubber sleeve is required

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