Specific Challenge

Provide efficient drilling of an unconventional well in the Rockies

North America / US Land North America / US Land

North Dakota

North America / US Land


  • Design a high-performance drill bit for efficient drilling of an unconventional well in the Rockies


  • GeoTech® GTD55RMU drill bit with Cerebro in-bit sensing to optimize engagement of the Cruzer depth-of-cut rolling element and Shyfter™ cutters


  • Improved tool face control, increasing ROP and minimizing reactive torque
  • Reduced uncertainty and increased efficiency for the entire run


Historically, drill bit design primarily relied on data capture at the surface. The introduction of Cerebro® intelligent bit technology gives Halliburton Drill Bits and Services the ability to map the downhole motion of the bit and any associated drilling dysfunctions. We can now use this data to gain a better understanding of the given application and design a more efficient bit for the drilling conditions. Using the 8-3/4 in. GeoTech® GTD55RMU Cerebro-enabled drill bit design, an operator in the Williston Basin achieved optimal engagement of the Cruzer™ depth-of-cut rolling element through the curve, without sacrificing efficiency. The Shyfter™ R2 cutters provided required durability while improving lateral efficiency to achieve the required build rates for the interval.

Improved Drilling Performance

Initial Cerebro tests were conducted, collecting data directly from the tool, which showed that when the Cruzer rolling elements were engaging, the fastest rate of penetration (ROP) was reached, while also minimizing torque. However, the Cruzer’s rolling elements were only engaging small percentages of the run. The GeoTech GTD55RMU Cerebro-enabled drill bit design incorporated these findings by changing the engagement of the Cruzer cutter. After decreasing the depth of cut at which the Cruzer cutter was engaging, results continued in a positive direction, thus, optimizing drilling performance.

Technology Advantages

The Cerebro intelligent bit technology provides the following advantages in tough drilling environments: 

  • Continuously captures downhole vibration and motion data 
  • Captures data as close to the cutting structure as possible 
  • Increases drilling efficiency and reduces well time 
  • Achieves higher drilling speeds without vibration limitations

Related Products

Cerebro® In-Bit Sensor Package

Cerebro® In-Bit Sensor Package

Analyze and understand drill bit performance quicker and more efficiently with the Cerebro™ in-bit sensor.

GeoTech® Fixed Cutter Drill Bits

GeoTech® Fixed Cutter Drill Bits

GeoTech® matrix and steel body drill bits are customized to deliver performance across all drilling applications.

Cruzer™ Depth-of-Cut Rolling Element

Cruzer™ Depth-of-Cut Rolling Element

The Cruzer™ depth-of-cut rolling element increases tool face control for improved drilling efficiency and directional control.


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