PROJECT DESCRIPTION
A crossover sub is used to crossover from one connection size to another or as the disposable component used to extend the connection life of a more expensive drill stem member.
Crossover subs are available with:
1. box x pin
2. box x box or
3. pin x pin connections.
Crossover Subs are manufactured from 4145H alloy steel. The connections are protected by a phosphate surface coating that minimizes galling on initial make-up.
Crossover sub |
Description | Upper Connection pat | Lower Connection Part | Type |
Kelly cross-over sub | Kelly | Drill pipe | A or B |
Drill pipe cross-over sub | Drill pipe | Drill pipe | A or B |
Interim cross-over sub | Drill pipe | Drill collar | A or B |
Drill collar cross-over sub | Drill collar | Drill collar | A or B |
Drill bit cross-over sub | Drill collar | Drill bit | A or B |
Swivel cross-over sub | Swivel lower sub | Kelly | C |
Fishing cross-over sub | Kelly | Drill pipe | C |
Drill pipe | Fishing tools | C |
Crossover sub can be customized as per customer's design. |
