Close up shot of two MOCS G2 (Multiple Opening Circulation Sub) on tripods

MOCS G2 Circulation Sub

The next generation in circulation

  • Description Description
  • Resources Resources
Description

The MOCS G2 is a multiple-opening circulation sub that's activated by and infinitely cycled with a single ball that changes the drilling fluid flow path from the ID of the string (non-bypass) to the annulus (bypass). By changing the flow regimes, you can cycle the tool between bypass and non-bypass modes an unlimited number of times. We developed this second-generation tool to improve drilling efficiency and reliability, reduce drilling costs, and enhance the safety of your operation.

Benefits

  • Easy to use – Simple operation requires only one ball
  • On-demand performance – Cycles in as little as 10 seconds with ball on seat
  • Unlimited cycling – Flow rate actuation alleviates need for multiple balls
  • Versatile – Can be loaded on surface and placed anywhere in the string
  • Safe – Eliminates the need to break string at every cycle
  • ID compatibility – Variable ball size allows for flexibility with various string IDs
  • Reduced invisible lost time – No wasted trips for an exhausted ball catcher
  • Designed to trip dry pipe – Ports shift closed when pumps are off, automatically draining to lower BHA
  • Allows fishing operations below the tool – Open through bore before activation or by fishing ball
  • Maintains well control safety – Automatically closes ports when pump flow is significantly reduced

Applications

  • BHA protection
    • Pumping lost-circulation material for lost circulation
    • Spotting acid
  • Wellbore clean-out
    • Workover/completion operations
    • Subsea riser/BOP jetting
  • Hole cleaning while drilling
    • Increasing annular velocities for improved cuttings/debris removal
  • Borehole enlargement
    • Cutting acceleration while reaming
    • Control of underreamer function
  • Coring
    • Enhances hole cleaning
    • Provides cutting relief
    • Reduced lag time when circulating samples or displacing fluid
  • Fishing
    • Effectively used with the Agitator™ system
Resources
  • MOCS G2 Multiple Opening Circulation Sub Technical Summary
  • MOCS G2 Multiple Opening Circulation Sub Brochure
Full shot of a MOCS G2 (Multiple Opening Circulation Sub) on tripods in a warehouse setting
Render of a MOCS G2 (Multiple Opening Circulation Sub) in non-bypass mode, on a white background
Non Bypass Mode
Render of a MOCS G2 (Multiple Opening Circulation Sub) in bypass mode after ball drop, on a white background
Bypass Mode
Render of a MOCS G2 (Multiple Opening Circulation Sub) in unactivated mode no drop ball, on a white background
Unactivated Mode
Render of a MOCS G2 (Multiple Opening Circulation Sub) in reset mode pumps off, on a white background
Reset Mode
Close up of the product name on a MOCS G2 (Multiple Opening Circulation Sub)

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