iCWD - Intelligent Circulation while Drilling
1. No restriction on LCM properties
2. Circulation through both BHA below the tool and through the side port
3. A downhole barrier Isolate drill string above the tool from downhole pressure in well control situation
4. Pumping cement slurry – To pump high density and high solid content fluid like cement slurry thru small openings at the bit imposes the risk of plugging bit and LWD components. iCWD activation eliminates that risk due to the large iCWD nozzle size that allows for the coarse material to pass thru. Two cement plugs (50bbl and 100bbl respectively) were successfully spotted, losses were successfully treated and operations resumed with minimal interruption.
5. High deviation well – iCWD AGILE activation with no drop-ball-system makes iCWD activation more reliable and safe for highly deviated ball since there is no risk associated with other ball activated tools such as not reaching seat or failure to reach seat or ball getting stuck in the middle of the drill string.
6. Foam ball – iCWD design allows for the 7 inch foam ball was pumped through iCWD port successfully after cement job.
Razis Ahmad, Business Development Manager, info@mit-technologies.com
iCWD is an intelligent circulating sub enabling the driller to treat losses, place cement plugs or improve hole cleaning without the need to pull out of hole, saving expensive rig time. Smart Electronics and sensors enables operator to run multiple tools in same string spaced out as required with each controlled and activated independently into any mode in any order through Agile Activation command sent from surface. iCWD provide full bore mechanical access through the tool, can be placed anywhere in the drilling string and does not require mechanical access or a drop ball to operate. iCWD design is based on a remotely controlled 3-way ball valve system enabling driller to command the tool in any of the special modes, Bypass, Hole Cleaning, or Isolation modes, in addition to the default drilling mode. In default drilling mode, the iCWD acts as a full bore joint with uninterrupted mechanical access through the tool with the side port sealed preventing communication between the inner flow passage and the annulus.