Inclination & Gamma At Bit Sub


Tartan’s At Bit Sub enables measurement of inclination and gamma count data approximately two feet behind the drill bit. Data is wirelessly transmitted around the downhole motor to the Electric Dipole System. Received data is decoded by the Electric Dipole electronics, where it is logged and periodically transmitted to the surface.

The 5.125-in. (130 mm) sub has four packets, one each for inclinometer, gamma, transmission electronics and battery. The 6.5-in. (165 mm) sub has five packets, with the same contents as the 5.125-in. subs, but with an extra battery. Battery life is typically between 8-120 hours per single battery pack.



  • Collision avoidance situations
  • Geosteering in tight formations and long laterals

Features and benefits

  • Seamless, wireless link to MWD system
  • Azimuthal gamma ray provides clear “up” and “down” readings
  • Provides accurate inclination and rotation speeds at the bit up to 250 rpm
  • Available in 5.125-in. (130 mm) and 6.5-in. (165 mm) sizes

Fill out your information to receive the Inclination & Gamma At Bit Sub data sheet.

Case Studies


Tartan MultiFrac systems successfully stimulated 18 months post-install.


Tartan successfully completes cemented EnerFrac™ ball-drop systems in the Montney.


Tartan cemented MultiFrac limited entry ball-drop systems increase production by 12.5%.

What Our Customers are Saying

“EOG has dealt with Tartan Completions since 2010, during which time they provided us completions equipment and services in our Rockies Region in the USA. Tartan has helped EOG lower costs through increased efficiency and equipment reliability and have always provided knowledgeable operational support for our daily completions operations. We can confidently recommend Tartan Completions as a solid and reliable supplier, and experts in completions equipment and services.”
EOG Resources
“Tartan Completions has been providing Crescent Point Energy with downhole milling services since 2009 when they started milling out frac ports in Saskatchewan. They have completed hundreds of jobs for us and still are our trusted service provider to do milling and fishing work in both Alberta and Saskatchewan. For any company looking for downhole milling services, we highly recommend Tartan Completion’s continued repeatable and reliable services and support.”
Crescent Point Energy Group

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