TorkBuster TD®

Improve BHA survivability and deliver maximum drilling energy.




 Ulterra TorkBusterTD Tool on forklift
TorkBuster TD®


Deflect Damaging Dysfunction

TorkBusterTD™ is a downhole tool designed to isolate HFTO and stick-slip and neutralize their harmful effects on the BHA. TorkBusterTD™ constantly deflects dysfunction out at the same frequency it originates and manages healthy drill string rotation. Made in America, the TD tool has a compact yet robust construction that reduces shock and vibration by deflecting destructive harmonic frequencies from the drill string with no dependency on drilling hydraulics. With TorkBusterTD™, your BHA is free to deliver maximum drilling energy from your parameters.

  • Neutralize HFTO
  • Mitigate stick/slip
  • Reduce shock load
TorkbusterTD tool fighting HFTO vibration
TorkBuster TD®


Defeat HFTO

High-Frequency Torsional Oscillation (HFTO) is the drill string’s silent killer since it flies under the radar of most traditional drilling equipment. It happens so fast that it’s too late to save your Bottom Hole Assembly (BHA) from damage by the time you detect it. Occurring between 100Hz–300Hz, HFTO is essentially a high-speed torsional resonance in your BHA. In simple terms, a combination of a hard formation and high energy input causes HFTO. When HFTO occurs, BHA failures will follow, usually when tangential acceleration accumulates over 100G.

Solve Shock & Vibration

Drilling in hard formations and putting a large amount of energy into the formation with a PDC bit can cause HFTO and stick-slip. These destructive vibrational forces can potentially deteriorate PDC cutters and other drill string components and reduce ROP.

Ulterra designs TorkBusterTD™ to offset these counterproductive forces and deliver maximum energy to your drill string.

TorkBusterTD™ protects against several malfunctions:

  • Motor failures
  • Twist-off
  • Washouts
  • DBR bits
  • Connection cracks
  • Reduced RSS control
TorkBuster TD Tool Cutaway Technical View
TorkBuster TD®


Solid Construction for Maximum Reliability

Ulterra builds the TorkBusterTD™ anti-stick tool with solid-state technology, engineering in superior materials, and designing out any hydraulically driven components that commonly cause malfunction. This smart engineering gives TorkBusterTD™ the same highly reliable construction built into all Ulterra’s products. It has a fixed length with a near-zero pressure drop across the tool. TorkBusterTD™ also features proprietary damping technology designed to provide smooth torque to and from the drill string.

Because we’re giving the BHA a slight deflection, the bit can engage formation variations more smoothly. This minor adjustment results in a more consistent depth of cut and a more dependable differential across the motor for better performance.

  • Short, fixed-length – consistent differential
  • No hydraulically-driven components
  • Full bore throughout – solid-state construction
  • Built-in A/B data collection
TorkBuster TD Tool Cutaway Technical View
TorkBuster TD®


Inner Diameter

2.25 in | 57.1 mm

Make-up Length

36.85 in | 936 mm

Ultimate Tensile Load

475,000 lbs | 2,112 kN

Burst Pressure Max

15,000 psi | 103 MPa

Temperature Max

350 F | 177 C

Tool Connections

NC50 (4-1/2 IF)

Make-up Torque

23,800 – 26,100 ft-lbs
32,300 – 35,350 N-m

Ulterra TorkBusterTD Tool on forklift
TorkBuster TD®


TorkBusterTD™ Improves Drilling Dynamics

TorkBusterTD™ is proven to increase BHA survivability, reduce shock loading above and below the tool, and mitigate HFTO and torsional dysfunction. TorkBusterTD™ has a self-contained paired data acquisition system with two high-frequency drilling dynamics recorders and optional enhancement.

Our talented team of after-action engineers quickly translates the data into A-B comparison reports that showcase direct drilling insights. These data-driven insights show you how effective the tool was in protecting your BHA. They also show the difference TorkBusterTD™ makes for more efficient rock failure and improved ROP.