Wellbore Conditioning

AERO™ Reamers

Expro's suite of AERO™ Reamers are wellbore conditioning solutions that improve the geometric condition of the borehole by removing unwanted ledges, spiraling and tortuosity, and help casing and liner strings reach a total depth more efficiently.  AERO™ Concentric and Dual Eccentric Reamers create a smooth torque response that optimizes drilling steerability and wellbore stability to improve casing running operations, cementing clearance, drilling efficiency, and overall hole integrity.

AERO™ Reamers are suitable for reaming-while-drilling operations that reduce or eliminate short trips, backreaming, dedicated cleanout runs, and associated non-productive time and spend.

Key features and benefits

  • Improved design without active OD gauge cutters to minimize induced vibration from reaming activities and allow drill-out without costly casing string damage
  • Passive cutters limit reaming vibrations laterally to eliminate negative impact to directional drilling controls and improve overall drilling efficiency
  • High junk slot area enhances fluid dynamics and hole cleaning effectiveness to improve overall well integrity
  • Conventional sub-based stabilizing design allows for unrestricted tool placement in drill string to prevent wear to costly BHA components
  • Stainless steel and non-magnetic material composition allow the tools to run in a wide range of BHA operations for increased operational flexibility
  • Impact arrestors provide stabilization to axial and lateral modes of vibration to mitigate shock loading and allow increased torque control
  • Tungsten carbide inserts and PDC cutters ensure efficient reaming with minimal wear in harsh drilling environments
  • Dual eccentric reamer features two separate reamer blade bodies to ensure consistent hole condition and OD
  • Eccentric blade design cuts wellbore diameter greater than pass through diameter to reduce the cost associated with expensive underreamers



CBI™ Cutting Bed Impeller

The CBI™ Cutting Bed Impeller tool is a downhole drill string tool intended for use in deviated wells where excessive build-up of cuttings causes drilling problems, typically in hole angles greater than 30°. The CBI™ tool is an integral drill string component consisting of a short one-piece mandrel with no moving parts, and mechanical properties exceeding the specification of the drill pipe. Its hydraulic and mechanical dual acting mechanism removes cuttings beds inside the casing or in open hole. It is shaped in such a way as to agitate any cuttings which have a tendency to settle out of the mud in the high angled sections of the wellbore.

Key features and benefits

  • Reduces torque and drag on the string while in drilling mode
  • Helps prevent twist-offs
  • Ensures cleaner and more stable hole conditions
  • Eases tripping and subsequent casing running
  • Improves mud log interpretation
  • Reduces stuck BHA
  • Improves ECD (Equivalent Circulating Density) control
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