Drill Stem Subs & Accessories
Sharpe manufactures and services a range of industry proven drilling accessories, down-hole tools and associated equipment including fishing tools and lift nubbins. All accessories are manufactured to our client’s specific requirements or, where applicable, under our API Spec 7-1 certification. Sharpe is authorised to apply the API monogram to manufactured items that fall within the API Spec 7-1 criteria.
Sharpe’s range of custom machined drilling accessories include
A Crossover Sub is generally used to connect the drill pipe to the BHA and are also utilized to connect special drilling tools and stabilizers within the BHA. Subs can also be used to protect other tools being run as part of the drill string. Crossover subs are designed to be compatible with tool joints they are connecting to.
Sharpe’s crossover subs are available in Box/ Box, Box/ Pin and Pin/ Pin configurations. All Crossover subs are generally made with AISI 4140/ 4145 material conforming to drill collar and API Spec 7-1 specifications or by customer specification.
The circulating sub is used for circulating drilling fluid when running in casing. Circulating subs are attached to the top of the casing string to form a connection with the mud flow line to enable circulation of the drilling mud.
Circulating subs can come with either a casing thread and/ or union thread (602/ 1502 union).
Lift nubbins are used in the handling of drilling tools and tubular products on the rig floor. lift nubbins are manufactured to suit the tool joint and is load rated. by Lift nubbins also offers thread protection.
Sharpe manufacture lift nubbins to a client’s specification from steel castings with heavy-duty lugs in accordance with API Spec 7-1 and certified and/or load tested in accordance with Australian Lifting Standard (AS4991).
Lift nubbins are suitable for handling of:
- Drill collars
- Drill pipe
- Drilling tools
Fishing Tools are utilised to retrieve stuck or broken drill string components from the well bore and to avoid the costly expense of the rig being stood down or loss of expensive down hole tools or equipment.
Sharpe manufacture, re-dress, refurbishment and service all types of fishing tools. Sharpe also works with clients to design and manufacture custom fishing tools in a cost-efficient and timely manner.
Sharpe’s fishing tools are 100% gauged and come with standard API or client specified threads.
The range of Fishing Tools Sharpe can service include:
- Junk Mills
- Over shots
- Reverse Circulations Junk Baskets
- Fishing Jars
- Wash Pipe
- Boot Baskets
- Taper Taps
- Fishing Bumper Sub
- Lead Impression Block
- Internal Casing Cutters/ Scrapers
- Die Collars
- Safety Joints