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DESCRIPTION
Dual Coil Head
The GDI Dual Coil Head is made to connect a dual coiled tubing string (coiled tubing inside of coiled tubing) to a bottom hole assembly. It connects to a larger OD outer coil and a smaller OD inner coil with set screw connectors. The outer coil is used to pump fluid and the inner tube is used to pump nitrogen or fluid.
Features
- Dedicated coil for circulation of fluid to power the mud motor
- Dedicated coil for circulation of nitrogen, foam, or fluid to maintain removal of well bore material
- No nitrogen flow through the mud motor
- Reduction in fluid loss
- Reduction in nitrogen usage
- Mechanical and hydraulic disconnect of the bottom hole assembly BHA includes check valves for each coil preventing inflow so well control is maintained
Benefits
- Maintain circulation of fluid, gasses, solids or cuttings on sub hydrostatic, under pressured or depleted wells
- Reduced risk of formation damage
- Maximizes the torque of the mud motor
- Immediate pressure response at surface while milling to monitor torque at bit thereby minimizing stall time
- Extends the life of the mud motor
- Ability to adjust the nitrogen and fluid rates
- Effective circulation ensures the liner and near wellbore are free of solids and cutting debris, this minimizes future interventions
- Ability to mill further into the lateral due to maintaining circulation for longer than traditional methods – get more high pressure intervals opened
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