X/Overs and subs
About the product
X/Overs and subs are used to connect components with different thread types, diameters or connections within a drill string. They ensure a safe transition between parts and increase the flexibility of your drilling configuration.
Deep Drill supplies a wide range of crossovers, saver subs, lift subs and bit subs. Our products can be used in standard and custom configurations, with optional features such as hardbanding or stress relief grooves .
X/Overs and subs are available for hire and sale, tailored to your technical specifications and operational objectives.
Technical specifications
- Types: pin-to-pin, pin-to-box, box-to-box, saver subs, lift subs and bit subs
- Thread: API REG, NC, IF, PAC or customer-specific
- Sizes: transition between standard or custom diameters
- Material: alloy steel with high tensile strength and fatigue resistance
- Optional: hardbanding, stress relief groove, boreback and coating
Quality and certification
- Manufactured in accordance with API 7-1 and customer specifications
- Mechanically tested for fit, tensile strength and thread integrity
- Supplied with documentation: serial numbers, test reports and certificates
- Fully traceable and ready for use
Interested?
Are you looking for X/Overs or subs for your string design or as part of a composite stack? Contact our team, we are happy to help.
FAQ section.
What are X/Overs and subs used for?
These transition pieces make it possible to safely connect components with different connections. They are often used when combining tools, between the drill string and the Bottom Hole Assembly (BHA), or to protect critical components.
What types do you supply?
We offer X-over subs , lift subs and bit subs, each with a specific application within your drill string.
Are these products available for hire and for sale?
Yes. All our subs are available for both sale and temporary use through rental.
For what types of projects can these products be used?
X/Overs and subs are widely applicable, from geothermal and oil and gas drilling to salt extraction, CO2injection wells and other high-stress applications.
Do you also offer customised solutions?
Certainly. We supply subs based on your technical drawing or connection profile, including optional finishing and coating.
