Top Drive
Command Tubular’s top drive subs are manufactured to match the desired specifications for the top drive drill pipe required.
Crossover Sub
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:
- Box x Pin
- Box x Box or
- Pin x Pin connections
Drillable Pickup Sub
Drillable Pickup Subs are used to lift BHA components i.e. drilling motors, jars, shock tools, drill collars from the catwalk to the rig floor (similar to standard Lift Subs). The difference between the standard lift sub and “Drillable” lift subs is that the Drillable lift sub has a top box connection in place of the top cap, and can be left in the BHA component while drilling.
Pickup Sub
Pickup subs or lift subs are used to lift BHA components such as drilling motors, jars, shock tools, drill collars, etc. from the catwalk to the rig floor. Lift subs are screwed to the top of the tool and feature an elevator groove, engineered to API specifications that the rig uses to pick up the tool. They are also are available with any connection necessary.
Bit Sub (Bottle Neck Sub)
Bit Subs are used to connect the drill bit to the first piece of BHA. Bit Subs can be ordered in sizes ranging from 3 1/8” to 11” OD, and various lengths made from 4145 Material. A Bottle Neck Bit Sub consists of two OD’s.
Bit Sub (Straight OD)
Bit Subs are used to connect the drill bit to the first piece of BHA. Bit Subs can be ordered in sizes ranging from 3 1/8” to 11” O.D., and various lengths made from 4145 Material. A Straight OD Bit Sub consists of one OD.
Saver Sub
The Saver Sub is used to extend the life of the kelly by taking the connection wear each time it is made up to a drill stem component. The saver sub connection is sacrificed because it can be easily repaired or inexpensively replaced. The Saver Sub can be equipped with a rubber or brass protector to reduce BOP equipment and casing wear resulting from contact damage with the lower kelly connection.
Cementing Sub (side-entry)
Command Tubular’s cementing subs are made to order to meet customer specific requirements. The side-entry union is welded and MPI Inspected and can be pressure tested if required.
Circulating Sub
Command Tubular circulating subs are made to order to meet customer-specific requirements. Circulating subs are made of integral (one-piece) and can be pressure tested if required.
Lower Kelly Cock (valve)*
By closing this valve before breaking a joint, you will save mud and keep the drilling floor cleaner and free of excess mud. The heavy duty body design enables the contractor to use this valve above and/or below the kelly. Valves are available in a full line of API and Command double shouldered connections. 10,000 or 15,000 working pressure. Can be trimmed out for the application of H2S.
I – BOP (valve)*
The IBOP is a back pressure valve used in the drill string to prevent the well from flowing uncontrollably up the drill string. It is generally used in two ways; first it is used on the rig floor with a complete IBOP configuration and secondly it is used below the rig floor without a plug when connected in the drill-string. Valves are available in a full line of API and Command Tubular high torque double shouldered connections. 10K,15K, and 22,500 working pressure. Can be trimmed out for the application of H2S.
* Command Tubular does not manufacture valves.