MMH technology for trenchless applications
EnerSEAL HDD is an advanced mixed metal hydroxide (MMH) water-base drilling fluid optimized for horizontal directional drilling. EnerSEAL HDD features superior stability and performance over previous systems. Using a proprietary chemistry, EnerSEAL HDD delivers challenging crossings where MMH technology performs but old systems could not deliver.
EnerSEAL HDD provides ideal flow properties for HDD applications: superior cuttings suspension, low pump pressures, a unique ability for the fluid to dramatically reduce formation losses, reduced torque and drag, and lower waste volumes.
Superior suspension properties
Cures and prevents losses
Efficiently ream large diameter boreholes
Minimize waste streams
In many areas, losses can result in costly treatment with lost circulation material and even possible environmental release. EnerSEAL HDD minimizes the risk of losses through its special characteristics where fluid thickens under low shear conditions. Should fluid enter a fracture, it enters a low shear region, subsquently thickening to reduce the risk of further propagation.
Hole cleaning in large diameter holes is progressively more challenging with both hole side and length of the crossing. When pumps are turned off, such as during a connection, cuttings can settle and restrict further movement, requiring extra circulating time. EnerSEAL HDD’s superior rheological properties minimize this risk to provide optimal hole cleaning and suspension.
Improved solids conveyance aids to enhance solids removal and solids control efficiency. This reduces dilution requirements and associated fluid volumes and chemical consumption. At the end of a crossing, EnerSEAL HDD can be stored and reused for even more savings.
The table below features common products used in the EnerSEAL HDD system. Not all additives are required and others may not be listed. Contact your AES Drilling Fluids Account Manager to review product details for your application.