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Crossovers, subs and pup joints
The short pieces that connect, protect and space the string. Tell us the connections at each end and we quote them with the rest of the job.
Get a quote- Materials
- AISI 4145 steel or non-magnetic
- Connections
- To your string, top and bottom
- Pricing
- On request, with stock and lead time confirmed
Subs we supply
Crossover and bit subs
Join components with different connections, or connect the bit to the string.
Float subs
House the float valve in the bottom-hole assembly, to control flow through the string and stop cuttings plugging the bit.
Lift subs
Make long or heavy assemblies easier to handle during make-up and break-out.
Saver subs
Take the wear of repeated connections, so the sub is repaired or replaced rather than the tool it protects.
Pup joints
Provide exact spacing in the string.
UBHO and muleshoe subs
Orient survey equipment in directional assemblies, run below a non-magnetic drill collar.
Circulating subs
Pump-in subs with a pin or box connection and a 1502 union.
Side-entry subs
Single and double side-entry designs for pumping or pressure testing.
Reduced section subs
A reduced outside diameter section, to your dimensions.
Include these for the fastest quote
- Sub type
- Top and bottom connections
- OD and ID
- Length
- Steel or non-magnetic
- Quantity and delivery site
Find your size. Tick it. Send one request.
Tick what you need, and put the top and bottom connections in the notes. Other combinations are quoted on request.
| Add to request | Item | Stock code |
|---|---|---|
| Crossover sub, connections to confirm | · | |
| Bit sub, connections to confirm | · | |
| Float sub, size to confirm | · | |
| Lift sub, size to confirm | · | |
| Saver sub, size to confirm | · | |
| Pup joint, size to confirm | · | |
| UBHO or muleshoe sub, size to confirm | · | |
| Circulating sub, size to confirm | · | |
| Side-entry sub, size to confirm | · | |
| Reduced section sub, size to confirm | · | |
| Crossover, 2-7/8in EUE x 2-3/8in EUE | D&C99094867 | |
| Crossover, 2-7/8in IF box x 3-1/2in EUE pin | D&C99094952 | |
| Crossover, swage, 3-1/2in EUE x 2-7/8in EUE | D&C99095228 |