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Tomax 6.75”
X-series AST

The “X” means extra flexible and reflects an extensive operational capability in terms of drilling parameters and well curvature. This tool is the most used in the AST fleet and has an extensive service record that includes coring, milling and under-reamer operations.

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Length

5.21 m
17.09 ft

Max. OD

171 mm
6.75”

Min. ID

53 mm
2.08”

Connection

top

NC 50
box

bottom

NC 50
pin

Tomax AST 6.75" seen from both sides

The 6 ¾” X-Series AST has a stroke capacity of 8” or 0.2m and can be configured for regular vertical as well as deviated drilling. The tool is viable for operations up to 425 F (220 C) and is routinely used in HTHP operations. The ability to manage drilling vibrations and stick-slip at deep depths can be used to optimize the use of PDC type drill-bits and mud motors in hot, compacted rock.

The pressure loss through the tool is minimal (less than 30 psi at 500 GPM or 2 bar at 1900 lpm). The tool can carry electronics to measure the actual work performed downhole.

Tomax 5.25 and 6.75 X Series production line
The 6 ¾” X-Series AST is the first and largest product line with Tomax. The capacity and versatility of the tool builds on ISO and API certificated standards. High capacity for parts production is the backbone of the unique reliability record.
Hight temperature drilling vibration
The need to mitigate vibrations is at its highest in extremely hot wells due to the sensitivity of the electronics close to their operational limit. The 6 ¾” XT-AST has been full-scale tested and operated at 425 F (220 C). Compare ASTs to find the rating needed.

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In our new order portal you will be able to get price estimates in minutes, manage your orders and generate new orders for our AST tools.

Select Your Tool

Customize your requirements using our intuitive dropdown menus. Simply select the tool size, quantity, and preferred connection type. For a more tailored experience, you can include your location and rig details before clicking CALCULATE.

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Receive a transparent, no-obligation cost estimate immediately. To ensure you have all the technical details upfront, Datasheets and User Manuals are available for download directly alongside your quote.

Seamless Ordering & Tracking

Manage your orders with 24/7 access to our portal. As your delivery is prepared for shipping, you will receive real-time email notifications. Every order includes a complete digital documentation package, including technical drawings and material certificates for your specific tools.

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