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FUSION™ RP (Rotary Pulse)

Cathedral’s FUSION RP is a mud pulse data transmission system that uses a direct drive rotary valve assembly which significantly reduces the chance of plugging in high-viscosity or lost circulation applications compared to traditional hydraulic-assist linear pulse systems.

Wherever possible, Cathedral recommends using the FUSION EM system to ensure operators capture the time and cost savings available through the survey-on-connection capabilities of EM. However, when mud pulse systems are required, the FUSION RP tool delivers unique features and benefits versus the linear pulse tools available today.


  • Anti-jam mechanism
  • Fewer moving parts
  • Low erosional material in flow gear composition
  • Programmable on surface / talk-down controllable once in wellbore
  • High temperature rating
  • Low pressure drop across open tool


  • In mud pulse applications where loss circulation material (LCM) is used
  • In areas of high rig density where interference with EM detection is a possibility
  • In extremely deep applications where EM transmission is challenged


  • Increases run times with higher mean time between failures (MTFB)
  • Uses same power source as EM
  • Reduces impact on rig hydraulics
  • Reduces risk of plugging
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Cathedral divests its Flowback and Production Testing division to Ideal Completions Group.