C-Load Motorhead Assembly (MHA)

The MHA has a reduced overall length when compared with the individual tool items, which is beneficial when rig-up height is restricted.

C-load-motor-head-assemblyThe Reservoir Group C-Load Motor-Head Assembly (MHA) combines three essential Coiled Tubing BHA components into one compact unit:  Double-Flapper Check Valves, heavy duty Hydraulic Disconnect and Dual-Acting Circulating Sub.  High-Pressure/ Extreme Temperature (15,000 PSI/ 232° C/ 449.6° F) option also available.

The MHA has a reduced overall length when compared with the individual tool items, which is beneficial when rig-up height is restricted.

The Double-Flapper Check Valves provide the primary well control barrier, within the Coiled Tubing Bottom Hole Assembly (BHA), during well intervention operations.  The double barrier, normally-closed configuration prevents the inflow of wellbore fluids to the Coiled Tubing, while still allowing high circulating rates to be achieved.

 The C-Load Hydraulic Disconnect section is an extremely robust, heavy duty, drop-ball release mechanism.  It allows a stuck Bottom Hole Assembly (BHA) to be disconnected and provides a standard internal “GS” profile for subsequent fishing operations.  The inherent strength of the C-Load Disconnect is provided by its’ unique grapple design, which also resists bending and vibrational loads.

The Dual-Acting Circulating Sub is a drop-ball-activated device, which includes a standard rupture disc port.  The shear rating of the circulating piston can be adjusted to suit specific well conditions. 

The burst disc can be activated to regain circulation if the lower section of the Bottom Hole Assembly (BHA) has been plugged off.

The shear rating of the Disconnect and circulating sections can be adjusted to suit specific well conditions.

Design Features

  • Torque-Through Capability
  • Standard & H2S Service Versions Available
  • Variable Shear Ratings & Ball Seat Sizes
  • Integral Rupture Disc Assists in Regaining Circulation Well-Proven, Reliable, Robust & Compact Design
  • Maintenance & Redress Readily Performed in the Field
  • High Pressure/ High Temperature Versions Available
  • Extremely Resistant to Vibrational & Impact Loads
  • Torque Transmission Clutches Positioned to Minimise Risk of Damage During Operation
  • Captive Placement of Disconnect Shear Screws Ensures Security Under Vibrational Loads