MF-Plug (formerly HPM PLUG) is a high-absorption lost circulation material designed for HDD, borehole stabilization and control of inadvertent returns.
MF-Plug is a highly absorbent lost circulation material designed to rapidly take up large amounts of water while maintaining controlled volume expansion.
It is primarily used in horizontal directional drilling to reduce fluid losses, control inadvertent returns and improve borehole stability in poorly consolidated formations such as gravel and cobble.
MF-Plug can also help reduce drill rod vibration in boreholes with partial or complete lost returns.
MF-Plug is recommended for:
Mix MF-Plug with fresh water or drilling fluid before pumping it into the cavity or spotting it across the thief zone.
Typical treatment concentration:
4.0–24.0 kg/m³
1.4–8.4 lb/bbl
Перед публикацией я бы проверила исходную цифру: в присланном тексте указано “0 to 24.0 kg/m³ (4.2 to 8.4 lb/bbl)”, но эти два диапазона не полностью соответствуют друг другу. Вероятно, первая цифра должна быть выше нуля.
When using MF-Plug in diamond coring:
25 kg / bag